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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: Jun 27th, 2025 1:46:12 am
Space Weather Message Code: WARK04
- Serial Number: 5014
- Issue Time: 2025 Jun 27 0546 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5013
- Valid From: 2025 Jun 25 1722 UTC
- Now Valid Until: 2025 Jun 27 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: Jun 26th, 2025 9:39:59 pm
Space Weather Message Code: ALTK05
- Serial Number: 1821
- Issue Time: 2025 Jun 27 0139 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 27 0139 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: Jun 26th, 2025 6:35:52 pm
Space Weather Message Code: WARK06
- Serial Number: 596
- Issue Time: 2025 Jun 26 2235 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Jun 26 2235 UTC
- Valid To: 2025 Jun 27 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: Jun 26th, 2025 6:31:11 pm
Space Weather Message Code: ALTK05
- Serial Number: 1820
- Issue Time: 2025 Jun 26 2231 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 26 2230 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: Jun 26th, 2025 6:22:40 pm
Space Weather Message Code: WARK05
- Serial Number: 2071
- Issue Time: 2025 Jun 26 2222 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Jun 26 2222 UTC
- Valid To: 2025 Jun 27 0600 UTC
- Warning Condition: Onset
- 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: Jun 26th, 2025 1:54:13 pm
Space Weather Message Code: WARK04
- Serial Number: 5013
- Issue Time: 2025 Jun 26 1754 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5012
- Valid From: 2025 Jun 25 1722 UTC
- Now Valid Until: 2025 Jun 27 0600 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: Jun 26th, 2025 7:25:05 am
Space Weather Message Code: WARK04
- Serial Number: 5012
- Issue Time: 2025 Jun 26 1125 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5011
- Valid From: 2025 Jun 25 1722 UTC
- Now Valid Until: 2025 Jun 26 2359 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: Jun 25th, 2025 4:27:49 pm
Space Weather Message Code: WARK05
- Serial Number: 2070
- Issue Time: 2025 Jun 25 2027 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Jun 25 2026 UTC
- Valid To: 2025 Jun 26 0900 UTC
- Warning Condition: Onset
- 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: Jun 25th, 2025 4:05:33 pm
Space Weather Message Code: ALTK04
- Serial Number: 2571
- Issue Time: 2025 Jun 25 2005 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Jun 25 2005 UTC
- Synoptic Period: 1800-2100 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: Jun 25th, 2025 2:31:46 pm
Space Weather Message Code: WATA20
- Serial Number: 1049
- Issue Time: 2025 Jun 25 1831 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Jun 26: G1 (Minor) Jun 27: G1 (Minor) Jun 28: None (Below G1)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: G1 (Minor) geomagnetic storming is likely 26-27 June due to recurrent, negative poliarty coronal hole high speed stream 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.
