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Having SatCom problems?
A burst of radiation on the sun's surface may trigger a geomagnetic storm, which can disrupt satellite communications.
In order to prevent unnecessary maintenance on satellite communications systems Air Sat One has provided a feed of Geophysical Events from NOAA's Space Weather Prediction Center. Check here to see if solar activity could be a cause of satellite communications problems.
Geophysical Alert Message Issued: Aug 17th, 2026 5:01:58 pm
Space Weather Message Code: WARK04
- Serial Number: 5402
- Issue Time: 2026 Aug 17 2101 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Aug 17 2101 UTC
- Valid To: 2026 Aug 18 0600 UTC
- Warning Conditions: Onset
- Comment:
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- 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.
Geophysical Alert Message Issued: Aug 17th, 2026 1:19:21 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1521
- Issue Time: 2026 Aug 17 1719 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Aug 17 1637 UTC
- Estimate Velocity: 825 km/s
- Comment:
Geophysical Alert Message Issued: Aug 14th, 2026 6:54:33 am
Space Weather Message Code: WARK04
- Serial Number: 5401
- Issue Time: 2026 Aug 14 1054 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Aug 14 1052 UTC
- Valid To: 2026 Aug 14 2359 UTC
- Warning Conditions: Onset
- Comment:
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- 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.
Geophysical Alert Message Issued: Aug 14th, 2026 3:15:21 am
Space Weather Message Code: ALTTP2
- Serial Number: 1520
- Issue Time: 2026 Aug 14 0715 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Aug 14 0650 UTC
- Estimate Velocity: 671 km/s
- Comment:
Geophysical Alert Message Issued: Aug 11th, 2026 4:55:54 pm
Space Weather Message Code: WATA20
- Serial Number: 1120
- Issue Time: 2026 Aug 11 2055 UTC
- CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
- Cancel Serial Number: 1119
- Original Issue Time: 2026 Aug 09 1338 UTC
- Cancelled Level Predicted:
- Aug 10 : None (Bellow G1) Aug 11 : None (Bellow G1) Aug 12 : None (Bellow G1)
- CME arrival 11AUG
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- 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.
Geophysical Alert Message Issued: Aug 11th, 2026 7:41:52 am
Space Weather Message Code: SUMSUD
- Serial Number: 302
- Issue Time: 2026 Aug 11 1141 UTC
- SUMMARY: Geomagnetic Sudden Impulse
- Observed: 2026 Aug 11 1133 UTC
- Deviation: 12 nT
- Station: BOU
- Comment:
Geophysical Alert Message Issued: Aug 11th, 2026 6:47:33 am
Space Weather Message Code: WARSUD
- Serial Number: 258
- Issue Time: 2026 Aug 11 1047 UTC
- WARNING: Geomagnetic Sudden Impulse expected
- Valid From: 2026 Aug 11 1040 UTC
- Valid To: 2026 Aug 11 1248 UTC
- Ip Shock: 2026-08-11 10:43
- Comment: Weak shock detected at L1.
Geophysical Alert Message Issued: Aug 9th, 2026 9:38:09 am
Space Weather Message Code: WATA20
- Serial Number: 1119
- Issue Time: 2026 Aug 09 1338 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Aug 10: None (Below G1) Aug 11: None (Below G1) Aug 12: G1 (Minor)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment:
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- 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.
Geophysical Alert Message Issued: Aug 8th, 2026 5:08:07 pm
Space Weather Message Code: ALTK06
- Serial Number: 725
- Issue Time: 2026 Aug 08 2108 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2026 Aug 08 2100 UTC
- Synoptic Period: 1800-2100
- Active Warning: YES
- Noaa Scale: G2 - Moderate
- Comment: Corrected for synoptic period
- CORRECTED
- NOAA Scale: G2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- 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.
Geophysical Alert Message Issued: Aug 8th, 2026 5:00:26 pm
Space Weather Message Code: ALTK06
- Serial Number: 725
- Issue Time: 2026 Aug 08 2100 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2026 Aug 08 2100 UTC
- Synoptic Period: 2100-2400
- Active Warning: YES
- Noaa Scale: G2 - Moderate
- Comment:
- NOAA Scale: G2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- 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.
