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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 24th, 2025 10:47:56 am
Space Weather Message Code: ALTEF3
- Serial Number: 3482
- Issue Time: 2025 Jun 24 1447 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3481
- Begin Time: 2025 Jun 23 1425 UTC
- Yesterday Maximum 2MeV Flux: 1270 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jun 23rd, 2025 1:00:34 pm
Space Weather Message Code: WATA30
- Serial Number: 254
- Issue Time: 2025 Jun 23 1700 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- Jun 24: None (Below G1) Jun 25: G2 (Moderate) Jun 26: G1 (Minor)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: Recurrent, negative polarity coronal hole high speed stream influence is likely to bring minor to moderate geomagnetic storming 25-26 Jun.
- 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 23rd, 2025 10:40:33 am
Space Weather Message Code: ALTEF3
- Serial Number: 3481
- Issue Time: 2025 Jun 23 1440 UTC
- ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Threshold Reached: 2025 Jun 23 1425 UTC
- Station: GOES19
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jun 22nd, 2025 5:16:10 pm
Space Weather Message Code: WATA20
- Serial Number: 1048
- Issue Time: 2025 Jun 22 2116 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Jun 23: None (Below G1) Jun 24: None (Below G1) Jun 25: 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 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 21st, 2025 11:02:49 pm
Space Weather Message Code: ALTK04
- Serial Number: 2570
- Issue Time: 2025 Jun 22 0302 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Jun 22 0259 UTC
- Synoptic Period: 0000-0300 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 21st, 2025 9:42:51 pm
Space Weather Message Code: WARK04
- Serial Number: 5010
- Issue Time: 2025 Jun 22 0142 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Jun 22 0140 UTC
- Valid To: 2025 Jun 22 1500 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: Jun 21st, 2025 2:01:53 pm
Space Weather Message Code: ALTK04
- Serial Number: 2569
- Issue Time: 2025 Jun 21 1801 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Jun 21 1759 UTC
- Synoptic Period: 1500-1800 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 21st, 2025 1:38:23 am
Space Weather Message Code: WARK04
- Serial Number: 5009
- Issue Time: 2025 Jun 21 0538 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Jun 21 0537 UTC
- Valid To: 2025 Jun 21 2359 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: Jun 20th, 2025 7:55:22 am
Space Weather Message Code: WARK04
- Serial Number: 5008
- Issue Time: 2025 Jun 20 1155 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5007
- Valid From: 2025 Jun 19 1912 UTC
- Now Valid Until: 2025 Jun 20 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 19th, 2025 8:14:15 pm
Space Weather Message Code: SUMX01
- Serial Number: 196
- Issue Time: 2025 Jun 20 0014 UTC
- SUMMARY: X-ray Event exceeded X1
- Begin Time: 2025 Jun 19 2337 UTC
- Maximum Time: 2025 Jun 19 2350 UTC
- End Time: 2025 Jun 19 2354 UTC
- X-ray Class: X1.9
- Location: N18W38
- NOAA Scale: R3 - Strong
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
- Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
