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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: May 30th, 2025 7:52:07 am
Space Weather Message Code: ALTEF3
- Serial Number: 3472
- Issue Time: 2025 May 30 1152 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3471
- Begin Time: 2025 May 30 0155 UTC
- Yesterday Maximum 2MeV Flux: pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: May 30th, 2025 7:42:47 am
Space Weather Message Code: WARK05
- Serial Number: 2049
- Issue Time: 2025 May 30 1142 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2048
- Valid From: 2025 May 29 0113 UTC
- Now Valid Until: 2025 May 30 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: May 30th, 2025 2:29:39 am
Space Weather Message Code: ALTTP2
- Serial Number: 1415
- Issue Time: 2025 May 30 0629 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 May 30 0612 UTC
- Estimated Velocity: 538 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.
Geophysical Alert Message Issued: May 29th, 2025 10:12:06 pm
Space Weather Message Code: ALTEF3
- Serial Number: 3471
- Issue Time: 2025 May 30 0212 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 May 30 0155 UTC
- Station: GOES-19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: May 29th, 2025 10:02:11 pm
Space Weather Message Code: ALTK05
- Serial Number: 1782
- Issue Time: 2025 May 30 0202 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 May 30 0155 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: May 29th, 2025 5:53:43 pm
Space Weather Message Code: ALTK05
- Serial Number: 1781
- Issue Time: 2025 May 29 2153 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 May 29 2153 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: May 29th, 2025 4:56:36 pm
Space Weather Message Code: WARK05
- Serial Number: 2048
- Issue Time: 2025 May 29 2056 UTC
- EXTENDED WARNING: Geomagnetic K-index of 5 expected
- Extension to Serial Number: 2047
- Valid From: 2025 May 29 0113 UTC
- Now Valid Until: 2025 May 30 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: May 29th, 2025 4:58:22 pm
Space Weather Message Code: ALTK06
- Serial Number: 633
- Issue Time: 2025 May 29 2058 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 May 29 2058 UTC
- Synoptic Period: 1800-2100 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: May 29th, 2025 2:59:43 pm
Space Weather Message Code: WATA30
- Serial Number: 252
- Issue Time: 2025 May 29 1859 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- May 30: G2 (Moderate) May 31: G1 (Minor) Jun 01: G1 (Minor)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- 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: May 29th, 2025 2:52:47 pm
Space Weather Message Code: ALTK05
- Serial Number: 1780
- Issue Time: 2025 May 29 1852 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 May 28 1852 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.
