La météorologie de l’espace

La vitesse du vent solaire Vent solaire champs magnétiques Flux radio 10,7 cm à midi
Bt Bz

Réactualiser

Réactualiser

Réactualiser
ALERT
X-Ray Flux exceeded M5
Issued: 13.07.2024 12.41 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jul 13 1237 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

WATCH
Geomagnetic Storm Category G1 Predicted
Issued: 11.07.2024 00.05 UTC
Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Jul 12: None (Below G1) Jul 13: G1 (Minor) Jul 14: G1 (Minor)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Type II Radio Emission
Issued: 04.07.2024 20.30 UTC
Type II Radio Emission
Begin Time: 2024 Jul 04 2007 UTC
Estimated Velocity: 387 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

ALERT
Type II Radio Emission
Publié: 04.07.2024 15.28 UTC
Type II Radio Emission
Begin Time: 2024 Jul 04 1427 UTC
Estimated Velocity: 815 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

ALERT
Electron 2MeV Integral Flux exceeded 1000pfu
Publié: 03.07.2024 18.59 UTC
Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2024 Jul 03 1840 UTC
Station: GOES16

Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

ALERT
Type II Radio Emission
Publié: 03.07.2024 09.03 UTC
Type II Radio Emission
Begin Time: 2024 Jul 03 0742 UTC
Estimated Velocity: 1254 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

WATCH
Geomagnetic Storm Category G1 Predicted
Publié: 01.07.2024 18.26 UTC
Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Jul 02: None (Below G1) Jul 03: G1 (Minor) Jul 04: None (Below G1)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

WARNING
Geomagnetic K-index of 4 expected
Publié: 30.06.2024 17.14 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 30 1710 UTC
Valid To: 2024 Jun 30 2359 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 29.06.2024 08.59 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4642
Valid From: 2024 Jun 27 2153 UTC
Now Valid Until: 2024 Jun 29 1800 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 28.06.2024 20.54 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4641
Valid From: 2024 Jun 27 2153 UTC
Now Valid Until: 2024 Jun 29 0900 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

EXTENDED WARNING
Geomagnetic K-index of 5 expected
Publié: 28.06.2024 20.54 UTC
Geomagnetic K-index of 5 expected
Extension to Serial Number: 1893
Valid From: 2024 Jun 28 0150 UTC
Now Valid Until: 2024 Jun 29 0600 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Geomagnetic K-index of 5
Publié: 28.06.2024 19.15 UTC
Geomagnetic K-index of 5
Threshold Reached: 2024 Jun 28 1915 UTC
Synoptic Period: 1800-2100 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Geomagnetic K-index of 5
Publié: 28.06.2024 15.22 UTC
Geomagnetic K-index of 5
Threshold Reached: 2024 Jun 28 1520 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Geomagnetic K-index of 8, 9-
Publié: 28.06.2024 14.18 UTC
Geomagnetic K-index of 8, 9-
Threshold Reached: 2024 Jun 28 1415 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G4 - Severe

Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.

EXTENDED WARNING
Geomagnetic K-Index of 6 expected
Publié: 28.06.2024 13.35 UTC
Geomagnetic K-Index of 6 expected
Extension to Serial Number: 530
Valid From: 2024 Jun 28 1135 UTC
Now Valid Until: 2024 Jun 28 2100 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

ALERT
Geomagnetic K-index of 7
Publié: 28.06.2024 13.28 UTC
Geomagnetic K-index of 7
Threshold Reached: 2024 Jun 28 1327 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G3 - Strong

Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

WARNING
Geomagnetic K-index of 7 or greater expected
Publié: 28.06.2024 13.24 UTC
Geomagnetic K-index of 7 or greater expected
Valid From: 2024 Jun 28 1325 UTC
Valid To: 2024 Jun 28 2100 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater

Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

ALERT
Geomagnetic K-index of 6
Publié: 28.06.2024 13.11 UTC
Geomagnetic K-index of 6
Threshold Reached: 2024 Jun 28 1310 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

ALERT
Geomagnetic K-index of 5
Publié: 28.06.2024 12.21 UTC
Geomagnetic K-index of 5
Threshold Reached: 2024 Jun 28 1220 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Geomagnetic K-index of 6
Publié: 28.06.2024 11.47 UTC
Geomagnetic K-index of 6
Threshold Reached: 2024 Jun 28 1147 UTC
Synoptic Period: 0900-1200 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

WARNING
Geomagnetic K-Index of 6 expected
Publié: 28.06.2024 11.36 UTC
Geomagnetic K-Index of 6 expected
Valid From: 2024 Jun 28 1135 UTC
Valid To: 2024 Jun 28 1800 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

EXTENDED WARNING
Geomagnetic K-index of 5 expected
Publié: 28.06.2024 11.36 UTC
Geomagnetic K-index of 5 expected
Extension to Serial Number: 1892
Valid From: 2024 Jun 28 0150 UTC
Now Valid Until: 2024 Jun 28 2100 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 28.06.2024 11.36 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4640
Valid From: 2024 Jun 27 2153 UTC
Now Valid Until: 2024 Jun 28 2100 UTC
Warning Condition: persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

ALERT
Geomagnetic K-index of 5
Publié: 28.06.2024 11.25 UTC
Geomagnetic K-index of 5
Threshold Reached: 2024 Jun 28 1125 UTC
Synoptic Period: 0900-1200 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

WARNING
Geomagnetic Sudden Impulse expected
Publié: 28.06.2024 09.26 UTC
Geomagnetic Sudden Impulse expected
Valid From: 2024 Jun 28 1005 UTC
Valid To: 2024 Jun 28 1035 UTC
IP Shock Passage Observed: 2024 Jun 28 0912 UTC

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 28.06.2024 05.55 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4639
Valid From: 2024 Jun 27 2153 UTC
Now Valid Until: 2024 Jun 28 1500 UTC
Warning Condition: persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

EXTENDED WARNING
Geomagnetic K-index of 5 expected
Publié: 28.06.2024 05.55 UTC
Geomagnetic K-index of 5 expected
Extension to Serial Number: 1891
Valid From: 2024 Jun 28 0150 UTC
Now Valid Until: 2024 Jun 28 1500 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Geomagnetic K-index of 4
Publié: 28.06.2024 02.21 UTC
Geomagnetic K-index of 4
Threshold Reached: 2024 Jun 28 0202 UTC
Synoptic Period: 0000-0300 UTC

Active Warning: Yes

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-index of 5 expected
Publié: 28.06.2024 01.51 UTC
Geomagnetic K-index of 5 expected
Valid From: 2024 Jun 28 0150 UTC
Valid To: 2024 Jun 28 0600 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

WARNING
Geomagnetic K-index of 4 expected
Publié: 27.06.2024 21.54 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 27 2153 UTC
Valid To: 2024 Jun 28 0600 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WATCH
Geomagnetic Storm Category G1 Predicted
Publié: 26.06.2024 11.06 UTC
Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Jun 27: None (Below G1) Jun 28: G1 (Minor) Jun 29: G1 (Minor)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

WARNING
Geomagnetic K-index of 4 expected
Publié: 26.06.2024 10.32 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 26 1032 UTC
Valid To: 2024 Jun 26 1800 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-index of 4 expected
Publié: 25.06.2024 16.28 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 25 1630 UTC
Valid To: 2024 Jun 25 2200 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 23.06.2024 20.56 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4635
Valid From: 2024 Jun 23 1030 UTC
Now Valid Until: 2024 Jun 24 0600 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
X-ray Event exceeded M5
Publié: 23.06.2024 13.26 UTC
X-ray Event exceeded M5
Begin Time: 2024 Jun 23 1251 UTC
Maximum Time: 2024 Jun 23 1301 UTC
End Time: 2024 Jun 23 1311 UTC
X-ray Class: M9.3
Location: S18E70
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

ALERT
X-Ray Flux exceeded M5
Publié: 23.06.2024 13.02 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 23 1257 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

WARNING
Geomagnetic K-index of 4 expected
Publié: 23.06.2024 10.28 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 23 1030 UTC
Valid To: 2024 Jun 23 2100 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

ALERT
Type II Radio Emission
Publié: 22.06.2024 00.04 UTC
Type II Radio Emission
Begin Time: 2024 Jun 21 2340 UTC
Estimated Velocity: 590 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

SUMMARY
X-ray Event exceeded M5
Publié: 20.06.2024 23.42 UTC
X-ray Event exceeded M5
Begin Time: 2024 Jun 20 2300 UTC
Maximum Time: 2024 Jun 20 2316 UTC
End Time: 2024 Jun 20 2320 UTC
X-ray Class: M5.7
Location: S16E41
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.

ALERT
X-Ray Flux exceeded M5
Publié: 20.06.2024 23.20 UTC
X-Ray Flux exceeded M5
Threshold Reached: 2024 Jun 20 2316 UTC
NOAA Scale: R2 - Moderate

Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.

WARNING
Geomagnetic K-index of 4 expected
Publié: 18.06.2024 04.57 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 18 0500 UTC
Valid To: 2024 Jun 18 1500 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-index of 4 expected
Publié: 17.06.2024 16.59 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 17 1700 UTC
Valid To: 2024 Jun 17 2200 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
10cm Radio Burst
Publié: 17.06.2024 11.50 UTC
10cm Radio Burst
Begin Time: 2024 Jun 17 1044 UTC
Maximum Time: 2024 Jun 17 1044 UTC
End Time: 2024 Jun 17 1044 UTC
Duration: 1 minutes
Peak Flux: 290 sfu
Latest Penticton Noon Flux: 167 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.

ALERT
Type II Radio Emission
Publié: 17.06.2024 11.33 UTC
Type II Radio Emission
Begin Time: 2024 Jun 17 1100 UTC
Estimated Velocity: 411 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 16.06.2024 20.55 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4631
Valid From: 2024 Jun 16 1200 UTC
Now Valid Until: 2024 Jun 17 0300 UTC
Warning Condition: Persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

ALERT
Geomagnetic K-index of 4
Publié: 16.06.2024 19.26 UTC
Geomagnetic K-index of 4
Threshold Reached: 2024 Jun 16 1926 UTC
Synoptic Period: 1800-2100 UTC

Active Warning: Yes

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-index of 4 expected
Publié: 16.06.2024 12.00 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 16 1200 UTC
Valid To: 2024 Jun 16 2100 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

EXTENDED WARNING
Geomagnetic K-index of 4 expected
Publié: 15.06.2024 20.52 UTC
Geomagnetic K-index of 4 expected
Extension to Serial Number: 4629
Valid From: 2024 Jun 15 1200 UTC
Now Valid Until: 2024 Jun 16 0900 UTC
Warning Condition: persistence

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic K-Index of 6 expected
Publié: 15.06.2024 14.10 UTC
Geomagnetic K-Index of 6 expected
Valid From: 2024 Jun 15 1409 UTC
Valid To: 2024 Jun 15 2100 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

ALERT
Geomagnetic K-index of 5
Publié: 15.06.2024 13.30 UTC
Geomagnetic K-index of 5
Threshold Reached: 2024 Jun 15 1329 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

WARNING
Geomagnetic K-index of 5 expected
Publié: 15.06.2024 13.23 UTC
Geomagnetic K-index of 5 expected
Valid From: 2024 Jun 15 1323 UTC
Valid To: 2024 Jun 15 2100 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

ALERT
Geomagnetic K-index of 4
Publié: 15.06.2024 13.10 UTC
Geomagnetic K-index of 4
Threshold Reached: 2024 Jun 15 1310 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

SUMMARY
Geomagnetic Sudden Impulse
Publié: 15.06.2024 12.16 UTC
Geomagnetic Sudden Impulse
Observed: 2024 Jun 15 1157 UTC
Deviation: 27 nT
Station: HAD

WARNING
Geomagnetic K-index of 4 expected
Publié: 15.06.2024 11.48 UTC
Geomagnetic K-index of 4 expected
Valid From: 2024 Jun 15 1200 UTC
Valid To: 2024 Jun 15 2100 UTC
Warning Condition: Onset

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

WARNING
Geomagnetic Sudden Impulse expected
Publié: 15.06.2024 11.11 UTC
Geomagnetic Sudden Impulse expected
Valid From: 2024 Jun 15 1145 UTC
Valid To: 2024 Jun 15 1215 UTC
IP Shock Passage Observed: 2024 Jun 15 1103 UTC

Table

Date Radio flux 10.7 cm SESC Le nombre des taches solaires Tache de la zone 10E-6 De nouvelles régions GOES15 X-ray Bkgd flux éclairs
X-ray Optique
C M X S 1 2 3
13-06-2024 170 124 700 0 * 5 1 0 11 2 0 0
14-06-2024 169 117 660 0 * 13 1 0 6 1 0 0
15-06-2024 171 134 1290 1 * 25 1 0 35 1 0 0
16-06-2024 167 152 1440 0 * 26 0 0 21 5 0 0
17-06-2024 180 171 1820 0 * 9 3 0 23 2 0 0
18-06-2024 193 150 1690 0 * 12 2 0 10 2 0 0
19-06-2024 196 181 2070 3 * 6 1 0 28 0 0 0
20-06-2024 203 138 2370 0 * 7 2 0 10 3 0 0
21-06-2024 197 133 2420 2 * 13 0 0 14 0 0 0
22-06-2024 196 139 2550 0 * 7 3 0 21 3 0 0
23-06-2024 196 176 1750 4 * 8 3 0 17 2 0 0
24-06-2024 199 141 1340 0 * 5 5 0 13 2 0 0
25-06-2024 194 129 780 2 * 3 1 0 8 0 0 0
26-06-2024 181 135 850 1 * 2 0 0 3 0 0 0
27-06-2024 183 146 820 1 * 12 0 0 5 0 0 0
28-06-2024 181 162 1320 2 * 8 0 0 10 0 0 0
29-06-2024 186 205 1250 3 * 7 0 0 2 0 0 0
30-06-2024 174 199 1150 0 * 7 0 0 6 0 0 0
01-07-2024 171 192 880 0 * 8 1 0 12 1 0 0
02-07-2024 164 192 690 0 * 11 0 0 1 0 0 0
03-07-2024 167 182 670 1 * 6 1 0 7 2 0 0
04-07-2024 173 113 730 1 * 6 2 0 5 0 0 0
05-07-2024 166 111 990 1 * 9 0 0 4 0 0 0
06-07-2024 166 132 870 2 * 6 1 0 14 0 0 0
07-07-2024 171 119 650 1 * 8 5 0 18 0 0 0
08-07-2024 169 95 470 1 * 16 1 0 15 0 0 0
09-07-2024 180 143 570 2 * 7 0 0 13 0 0 0
10-07-2024 214 190 1270 1 * 7 5 0 19 3 0 0
11-07-2024 205 188 1440 2 * 5 2 0 11 3 0 0
12-07-2024 210 162 1740 1 * 5 0 0 10 0 0 0
Moyenne/Total 183 152 1241 32 269 41 0 372 32 0 0

Graphique de synthèse

éclairs

Solar wind

Solar Wind

Le vent solaire est un flux de plasma libéré de la haute atmosphère du Soleil. Il se compose principalement d'électrons, de protons et de particules alpha avec des énergies généralement comprises entre 1,5 et 10 keV. Le flux de particules varie en densité, température et vitesse dans le temps et sur la longitude solaire. Ces particules peuvent échapper à la gravité du Soleil en raison de leur haute énergie, de la température élevée de la couronne et des phénomènes magnétiques, électriques et électromagnétiques qu'elle contient.

Le vent solaire est divisé en deux composantes, respectivement appelées le vent solaire lent et le vent solaire rapide. Le vent solaire lent a une vitesse d'environ 400 km / s, une température de 1,4–1,6 × 10e6 K et une composition proche de la couronne. En revanche, le vent solaire rapide a une vitesse typique de 750 km / s, une température de 8 × 10e5 K et il correspond presque à la composition de la photosphère du Soleil. Le vent solaire lent est deux fois plus dense et plus variable en intensité que le vent solaire rapide. Le vent lent a également une structure plus complexe, avec des régions turbulentes et des structures à grande échelle.

Solar radio flux at 10.7 cm

Solar radio flux at 10.7 cm

Le flux radioélectrique solaire à 10,7 cm (2800 MHz) est un excellent indicateur de l'activité solaire. Souvent appelé indice F10.7, c'est l'un des enregistrements les plus anciens d'activité solaire. Les émissions radio F10.7 proviennent de haut dans la chromosphère et bas dans la couronne de l'atmosphère solaire. Le F10.7 est bien corrélé avec le nombre de taches solaires ainsi qu'avec un certain nombre d'enregistrements d'irradiance solaire UltraViolet (UV) et visible. Rapporté en «unités de flux solaire» (s.f.u.), le F10.7 peut varier de moins de 50 s.f.u., à plus de 300 s.f.u., au cours d'un cycle solaire.

Flares

Flares

Une éruption solaire est un éclair soudain de luminosité observé à la surface du Soleil ou sur le flanc solaire, qui est interprété comme une importante libération d'énergie allant jusqu'à 6 × 10e25 joules d'énergie. Ils sont souvent, mais pas toujours, suivis d'une éjection de masse coronale colossale. La fusée éjecte des nuages ​​d'électrons, d'ions et d'atomes à travers la couronne du soleil dans l'espace. Ces nuages ​​atteignent généralement la Terre un jour ou deux après l'événement.

Les éruptions solaires affectent toutes les couches de l'atmosphère solaire (photosphère, chromosphère et couronne), lorsque le milieu plasma est chauffé à des dizaines de millions de kelvin, tandis que les électrons, les protons et les ions plus lourds sont accélérés à près de la vitesse de la lumière. Ils produisent un rayonnement à travers le spectre électromagnétique à toutes les longueurs d'onde, des ondes radio aux rayons gamma, bien que la plupart de l'énergie soit répartie sur des fréquences en dehors de la plage visuelle et pour cette raison, la majorité des fusées éclairantes ne sont pas visibles à l'œil nu et doivent être observé avec des instruments spéciaux. Les éruptions se produisent dans les régions actives autour des taches solaires, où des champs magnétiques intenses pénètrent dans la photosphère pour relier la couronne à l'intérieur solaire. Les fusées éclairantes sont alimentées par la libération soudaine (de quelques minutes à des dizaines de minutes) d'énergie magnétique stockée dans la couronne. Les mêmes rejets d'énergie peuvent produire des éjections de masse coronale (CME), bien que la relation entre les CME et les éruptions ne soit pas encore bien établie.

La fréquence d'apparition des éruptions solaires varie, de plusieurs par jour lorsque le Soleil est particulièrement «actif» à moins d'une par semaine lorsque le Soleil est «calme», suivant le cycle de 11 ans (le cycle solaire). Les grosses fusées éclairantes sont moins fréquentes que les plus petites.

Classification

Les éruptions solaires sont classées comme A, B, C, M ou X selon le flux de pointe (en watts par mètre carré, W / m2) de rayons X de 100 à 800 picomètres près de la Terre, tel que mesuré sur le vaisseau spatial GOES.

Classification Peak Flux Range at 100-800 picometer
W/m2
A < 10e-7
B 10e-7 to 10e-6
C 10e-6 to 10e-5
M 10e-5 to 10e-4
X 10e-4 to 10e-3
Z > 10e-3

An earlier flare classification is based on Hα spectral observations. The scheme uses both the intensity and emitting surface. The classification in intensity is qualitative, referring to the flares as: (f)aint, (n)ormal or (b)rilliant. The emitting surface is measured in terms of millionths of the hemisphere and is described below. (The total hemisphere area AH = 6.2 × 1012 km2.)

Classification Corrected area
(millionths of hemisphere)
S < 100
1 100 - 250
2 250 - 600
3 600 - 1200
4 > 1200

Sunspot number

Sunspots

Les taches solaires sont des phénomènes temporaires sur la photosphère du Soleil qui apparaissent visiblement comme des taches sombres par rapport aux régions environnantes. Ils correspondent à des concentrations de champ magnétique qui inhibent la convection et entraînent une température de surface réduite par rapport à la photosphère environnante. Les taches solaires apparaissent généralement par paires, avec des membres de paires de polarité magnétique opposée. Le nombre de taches solaires varie en fonction du cycle solaire d'environ 11 ans.

Les populations de taches solaires augmentent rapidement et diminuent plus lentement selon un cycle irrégulier de 11 ans, bien que des variations significatives du nombre de taches solaires observant la période de 11 ans soient connues sur des périodes plus longues. Par exemple, de 1900 aux années 1960, la tendance des maxima solaires du nombre de taches solaires a été à la hausse; des années 1960 à nos jours, il a quelque peu diminué. Au cours des dernières décennies, le Soleil a eu un niveau moyen d'activité des taches solaires nettement élevé; il était également actif pour la dernière fois il y a plus de 8 000 ans.

Le nombre de taches solaires est en corrélation avec l'intensité du rayonnement solaire au cours de la période depuis 1979, lorsque les mesures par satellite du flux radiatif absolu sont devenues disponibles. Étant donné que les taches solaires sont plus sombres que la photosphère environnante, on peut s'attendre à ce que plus de taches solaires conduisent à moins de rayonnement solaire et à une constante solaire diminuée. Cependant, les marges environnantes des taches solaires sont plus lumineuses que la moyenne et sont donc plus chaudes; Dans l'ensemble, plus de taches solaires augmentent la constante solaire ou la luminosité du Soleil. La variation causée par le cycle des taches solaires à la production solaire est relativement faible, de l'ordre de 0,1% de la constante solaire (une plage pic à creux de 1,3 W / m2 contre 1366 W / m2 pour la constante solaire moyenne).

K-indices



Aujourd’hui


0h
UTC
3h
UTC
6h
UTC
9h
UTC
12h
UTC
15h
UTC
18h
UTC
21h
UTC
1. 33 1. 00 1.



Data


Estimated Planetary

Estimated Planetary

Date A K-indices (UTC)
0h 3h 6h 9h 12h 15h 18h 21h
14-06-2024 6 1. 00 1. 33 2.
15-06-2024 19 2. 33 2. 00 2.
16-06-2024 13 3. 00 1. 33 0.
17-06-2024 11 2. 00 3. 00 2.
18-06-2024 10 2. 00 2. 67 2.
19-06-2024 10 3. 00 3. 00 2.
20-06-2024 7 2. 00 1. 67 1.
21-06-2024 5 1. 67 1. 67 1.
22-06-2024 4 1. 67 1. 00 0.
23-06-2024 10 1. 33 1. 67 2.
24-06-2024 5 1. 67 1. 33 0.
25-06-2024 9 1. 67 1. 33 2.
26-06-2024 9 1. 67 1. 67 2.
27-06-2024 9 2. 00 1. 67 1.
28-06-2024 59 4. 33 4. 33 3.
29-06-2024 14 4. 33 2. 67 2.
30-06-2024 11 2. 67 2. 67 1.
01-07-2024 6 1. 67 1. 67 2.
02-07-2024 5 1. 33 1. 67 1.
03-07-2024 5 2. 00 1. 33 2.
04-07-2024 10 2. 00 2. 33 1.
05-07-2024 8 2. 33 2. 67 1.
06-07-2024 3 1. 00 1. 00 0.
07-07-2024 8 2. 00 1. 67 1.
08-07-2024 10 2. 33 2. 33 2.
09-07-2024 6 2. 00 2. 00 1.
10-07-2024 6 2. 00 1. 67 1.
11-07-2024 6 2. 33 1. 67 1.
12-07-2024 5 2. 33 1. 67 2.
13-07-2024 4 1. 33 1. 00 1.

Middle Latitude

Date A K-indices
14-06-2024 8 1 1 2 3 3 1 2 2
15-06-2024 18 2 2 2 3 5 3 3 4
16-06-2024 9 3 0 0 2 3 2 3 3
17-06-2024 11 2 3 2 2 2 3 3 3
18-06-2024 11 2 3 3 2 3 3 2 1
19-06-2024 10 3 3 2 2 3 2 2 1
20-06-2024 8 2 2 1 2 3 1 2 3
21-06-2024 4 1 1 1 1 2 1 2 1
22-06-2024 6 2 1 1 2 3 2 1 1
23-06-2024 12 1 2 3 3 4 2 3 2
24-06-2024 7 2 0 0 2 3 3 2 2
25-06-2024 9 1 1 3 3 2 3 2 1
26-06-2024 8 1 1 2 3 3 2 2 1
27-06-2024 11 2 2 1 2 3 3 3 3
28-06-2024 32 3 4 3 5 6 4 4 3
29-06-2024 11 3 2 2 3 3 2 3 2
30-06-2024 10 2 3 1 2 3 3 2 2
01-07-2024 5 1 1 2 2 2 2 1 1
02-07-2024 6 1 2 1 2 3 1 1 2
03-07-2024 6 1 1 2 2 2 2 2 2
04-07-2024 10 2 3 2 2 2 2 3 3
05-07-2024 10 3 3 2 3 3 2 1 1
06-07-2024 4 1 1 1 1 2 1 1 1
07-07-2024 7 2 1 2 1 2 2 2 3
08-07-2024 11 2 2 2 3 4 2 2 2
09-07-2024 8 2 2 1 2 3 2 2 2
10-07-2024 8 2 2 2 2 2 2 3 2
11-07-2024 7 2 2 2 2 2 2 2 2
12-07-2024 7 2 2 2 2 2 1 2 2
13-07-2024 1 1 1 1

High Latitude

Date A K-indices
14-06-2024 12 0 2 4 4 3 1 2 2
15-06-2024 26 1 3 3 5 6 4 2 3
16-06-2024 17 3 1 0 4 5 2 4 2
17-06-2024 18 2 3 2 5 3 4 3 2
18-06-2024 23 2 3 4 5 5 4 2 2
19-06-2024 20 3 3 2 3 5 5 2 1
20-06-2024 8 3 2 1 2 3 1 1 2
21-06-2024 2 1 2 1 0 0 0 1 1
22-06-2024 1 1 1 0 0 0 0 0 1
23-06-2024 13 1 2 3 5 3 2 2 1
24-06-2024 2 2 1 1 0 0 1 0 1
25-06-2024 13 2 2 5 3 2 3 1 1
26-06-2024 12 1 1 2 4 4 3 2 1
27-06-2024 6 2 1 1 0 3 2 2 2
28-06-2024 36 4 4 4 6 5 4 4 4
29-06-2024 19 4 2 2 4 4 4 3 3
30-06-2024 17 3 2 2 3 4 5 2 2
01-07-2024 14 2 3 4 4 3 3 1 1
02-07-2024 4 2 2 1 0 2 0 1 1
03-07-2024 3 2 2 1 0 1 0 1 1
04-07-2024 15 2 2 2 1 4 5 3 1
05-07-2024 7 2 3 2 2 2 1 1 1
06-07-2024 2 1 1 1 0 0 0 1 1
07-07-2024 5 2 2 2 0 1 1 2 2
08-07-2024 14 3 2 2 5 3 2 2 2
09-07-2024 9 2 2 1 4 3 1 1 1
10-07-2024 5 2 2 1 2 1 1 1 1
11-07-2024 4 1 2 2 0 1 1 1 1
12-07-2024 6 2 2 3 1 1 1 1 1
13-07-2024 1 1 1 0

About

The K-index quantifies disturbances in the horizontal component of earth's magnetic field with an integer in the range 0–9 with 1 being calm and 5 or more indicating a geomagnetic storm. It is derived from the maximum fluctuations of horizontal components observed on a magnetometer during a three-hour interval. The label K comes from the German word Kennziffer meaning “characteristic digit”. The K-index was introduced by Julius Bartels in 1938.

The Estimated 3-hour Planetary Kp-index is derived at the NOAA Space Weather Prediction Center using data from the following ground-based magnetometers:

  • Sitka, Alaska
  • Meanook, Canada
  • Ottawa, Canada
  • Fredericksburg, Virginia
  • Hartland, UK
  • Wingst, Germany
  • Niemegk, Germany
  • Canberra, Australia

These data are made available thanks to the cooperative efforts between SWPC and data providers around the world, which currently includes the U.S. Geological Survey, Natural Resources Canada (NRCAN), the British Geological Survey, the German Research Centre for Geosciences (GFZ), and Geoscience Australia. Important magnetometer observations are also contributed by the Institut de Physique du Globe de Paris and the Korean Space Weather Center K-index Watches are issued when the highest predicted NOAA estimated Kp-indices for a day are K = 5, 6, 7, or >= 8 and is reported in terms of the NOAA G scale. K-index Warnings are issued when NOAA estimated Kp-indices of 4, 5, 6, and 7 or greater are expected. K-index Alerts are issued when the NOAA estimated Kp-indices reach 4, 5, 6, 7, 8, or 9.


More info
Source de données: NOAA, Wikipedia

Style

Choisir un style...

Unités

Langue



Icônes


Température

Humidité

Pression

Vitesse du vent

Rafale de vent

Précipitations

Rayonnement solaire

Neige

Température ressentie

Point de rosée

INDICE UV

Visibilité

Base des nuages

Evapotraspiration

Température intérieure

Humidité intérieure


Lever du soleil

Coucher du soleil

Lever de lune

Coucher de lune

Time

Menu

De

à

Plein écran

Exporter comme image

Réglages

Page d’accueil

Caméra Web

Table

Graphique

Carte

Stable

En hausse

En baisse

Vigilance

Latitude

Longitude

Historique

éclipse solaire

éclipse de lune

GPS

Élévation

Jour

Mois

Année

Haut température

Basse température

Jour

Nuit

Printemps

Été

Automne

Hiver