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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: Apr 1st, 2026 10:30:26 pm
Space Weather Message Code: WARK05
- Serial Number: 2218
- Issue Time: 2026 Apr 02 0230 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2026 Apr 02 0230 UTC
- Valid To: 2026 Apr 02 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: Apr 1st, 2026 11:01:02 pm
Space Weather Message Code: ALTK05
- Serial Number: 1996
- Issue Time: 2026 Apr 02 0301 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Apr 02 0300 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: Apr 1st, 2026 8:47:54 pm
Space Weather Message Code: WARK04
- Serial Number: 5307
- Issue Time: 2026 Apr 02 0047 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Apr 02 0047 UTC
- Valid To: 2026 Apr 02 0900 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: Apr 1st, 2026 7:35:19 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1474
- Issue Time: 2026 Apr 01 2335 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Apr 01 2303 UTC
- Estimated Velocity: 58 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: Apr 1st, 2026 9:30:37 am
Space Weather Message Code: ALTEF3
- Serial Number: 3663
- Issue Time: 2026 Apr 01 1330 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3662
- Begin Time: 2026 Mar 22 1430 UTC
- Yesterday Maximum 2MeV Flux: 1413 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Apr 1st, 2026 8:33:06 am
Space Weather Message Code: SUMSUD
- Serial Number: 297
- Issue Time: 2026 Apr 01 1233 UTC
- SUMMARY: Geomagnetic Sudden Impulse
- Observed: 2026 Apr 01 1206 UTC
- Deviation: 19 nT
- Station: HAD
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Apr 1st, 2026 8:10:32 am
Space Weather Message Code: WARK04
- Serial Number: 5306
- Issue Time: 2026 Apr 01 1210 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Apr 01 1210 UTC
- Valid To: 2026 Apr 01 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: Apr 1st, 2026 7:39:09 am
Space Weather Message Code: WARSUD
- Serial Number: 252
- Issue Time: 2026 Apr 01 1139 UTC
- WARNING: Geomagnetic Sudden Impulse expected
- Valid From: 2026 Apr 01 1206 UTC
- Valid To: 2026 Apr 01 1236 UTC
- IP Shock Passage Observed: 2026 Apr 01 1130 UTC
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Mar 31st, 2026 6:13:34 pm
Space Weather Message Code: WATA30
- Serial Number: 269
- Issue Time: 2026 Mar 31 2213 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- Apr 01: G2 (Moderate) Apr 02: G1 (Minor) Apr 03: None (Below G1)
- 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: Mar 31st, 2026 10:54:21 am
Space Weather Message Code: ALTEF3
- Serial Number: 3662
- Issue Time: 2026 Mar 31 1454 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3661
- Begin Time: 2026 Mar 22 1430 UTC
- Yesterday Maximum 2MeV Flux: 1358 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
