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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: Jul 24th, 2025 6:38:29 am
Space Weather Message Code: WARK04
- Serial Number: 5046
- Issue Time: 2025 Jul 24 1038 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Jul 24 1038 UTC
- Valid To: 2025 Jul 24 1800 UTC
- Warning Condition: Onset
- 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: Jul 23rd, 2025 3:05:26 pm
Space Weather Message Code: WATA20
- Serial Number: 1053
- Issue Time: 2025 Jul 23 1905 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Jul 24: G1 (Minor) Jul 25: None (Below G1) Jul 26: None (Below G1)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: Isolated periods of G1 (Minor) geomagnetic storming are likely primarily early on 24 July under sustained CH HSS effects.
- 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: Jul 23rd, 2025 2:05:44 pm
Space Weather Message Code: WARK04
- Serial Number: 5045
- Issue Time: 2025 Jul 23 1805 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5044
- Valid From: 2025 Jul 23 1137 UTC
- Now Valid Until: 2025 Jul 24 0900 UTC
- Warning Condition: Persistence
- Comment: Active conditions are expected to continue through the early periods of 24 Jul under negative polarity CH HSS effects.
- 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: Jul 23rd, 2025 11:04:20 am
Space Weather Message Code: ALTK05
- Serial Number: 1832
- Issue Time: 2025 Jul 23 1504 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jul 23 1459 UTC
- Synoptic Period: 1200-1500 UTC
- Active Warning: Yes
- NOAA Scale: G1 - Minor
- Comment: Minor geomagnetic storming levels were reached due to continued negative polarity CH HSS effects.
- 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: Jul 23rd, 2025 7:36:57 am
Space Weather Message Code: WARK05
- Serial Number: 2084
- Issue Time: 2025 Jul 23 1136 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2083
- Valid From: 2025 Jul 22 2051 UTC
- Now Valid Until: 2025 Jul 23 1800 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 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: Jul 23rd, 2025 7:38:09 am
Space Weather Message Code: WARK04
- Serial Number: 5044
- Issue Time: 2025 Jul 23 1138 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Jul 23 1137 UTC
- Valid To: 2025 Jul 23 2100 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: Jul 23rd, 2025 1:41:52 am
Space Weather Message Code: WARK05
- Serial Number: 2083
- Issue Time: 2025 Jul 23 0541 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2082
- Valid From: 2025 Jul 22 2051 UTC
- Now Valid Until: 2025 Jul 23 1200 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 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: Jul 22nd, 2025 6:52:27 pm
Space Weather Message Code: WARK06
- Serial Number: 598
- Issue Time: 2025 Jul 22 2252 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Jul 22 2252 UTC
- Valid To: 2025 Jul 23 0600 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: Jul 22nd, 2025 6:49:35 pm
Space Weather Message Code: ALTK05
- Serial Number: 1831
- Issue Time: 2025 Jul 22 2249 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jul 22 2249 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: Jul 22nd, 2025 5:05:18 pm
Space Weather Message Code: ALTK05
- Serial Number: 1830
- Issue Time: 2025 Jul 22 2105 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jul 22 2059 UTC
- Synoptic Period: 1800-2100 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.
