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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: Sep 2nd, 2025 12:59:36 pm
Space Weather Message Code: WARK04
- Serial Number: 5068
- Issue Time: 2025 Sep 02 1659 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5067
- Valid From: 2025 Sep 01 2040 UTC
- Now Valid Until: 2025 Sep 03 0900 UTC
- Warning Condition: Persistence
- 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: Sep 2nd, 2025 1:01:02 pm
Space Weather Message Code: WARK06
- Serial Number: 601
- Issue Time: 2025 Sep 02 1701 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Sep 02 1655 UTC
- Valid To: 2025 Sep 02 2359 UTC
- Warning Condition: Onset
- 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: Sep 2nd, 2025 12:57:47 pm
Space Weather Message Code: WATA20
- Serial Number: 1057
- Issue Time: 2025 Sep 02 1657 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Sep 03: G1 (Minor) Sep 04: None (Below G1) Sep 05: None (Below G1)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: Lingering CME effects are likely to cause periods of G1 (Minor) geomagnetic storming on 03 Sep.
- 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: Sep 1st, 2025 9:06:58 pm
Space Weather Message Code: ALTK05
- Serial Number: 1843
- Issue Time: 2025 Sep 02 0106 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Sep 02 0101 UTC
- Synoptic Period: 0000-0300 UTC
- Active Warning: Yes
- NOAA Scale: G1 - Minor
- 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: Sep 1st, 2025 6:41:00 pm
Space Weather Message Code: ALTK06
- Serial Number: 652
- Issue Time: 2025 Sep 01 2241 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Sep 01 2236 UTC
- Synoptic Period: 2100-2400 UTC
- Active Warning: Yes
- 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: Sep 1st, 2025 5:22:08 pm
Space Weather Message Code: SUMSUD
- Serial Number: 288
- Issue Time: 2025 Sep 01 2122 UTC
- SUMMARY: Geomagnetic Sudden Impulse
- Observed: 2025 Sep 01 2101 UTC
- Deviation: 58 nT
- Station: CNB
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Sep 1st, 2025 5:08:02 pm
Space Weather Message Code: WARK06
- Serial Number: 600
- Issue Time: 2025 Sep 01 2108 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Sep 01 2107 UTC
- Valid To: 2025 Sep 02 1459 UTC
- Warning Condition: Onset
- 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: Sep 1st, 2025 5:08:27 pm
Space Weather Message Code: ALTK04
- Serial Number: 2586
- Issue Time: 2025 Sep 01 2108 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Sep 01 2101 UTC
- Synoptic Period: 2100-2400 UTC
- Active Warning: Yes
- 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: Sep 1st, 2025 5:08:55 pm
Space Weather Message Code: ALTK05
- Serial Number: 1842
- Issue Time: 2025 Sep 01 2108 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Sep 01 2103 UTC
- Synoptic Period: 2100-2400 UTC
- Active Warning: Yes
- NOAA Scale: G1 - Minor
- 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: Sep 1st, 2025 4:39:06 pm
Space Weather Message Code: WARSUD
- Serial Number: 244
- Issue Time: 2025 Sep 01 2039 UTC
- WARNING: Geomagnetic Sudden Impulse expected
- Valid From: 2025 Sep 01 2045 UTC
- Valid To: 2025 Sep 01 2145 UTC
- IP Shock Passage Observed: 2025 Sep 01 2030 UTC
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
