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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 1st, 2025 2:33:01 am
Space Weather Message Code: ALTK06
- Serial Number: 634
- Issue Time: 2025 Jun 01 0633 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Jun 01 0629 UTC
- Synoptic Period: 0600-0900 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: Jun 1st, 2025 2:17:45 am
Space Weather Message Code: ALTK05
- Serial Number: 1785
- Issue Time: 2025 Jun 01 0617 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 01 0613 UTC
- Synoptic Period: 0600-0900 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 1st, 2025 2:13:33 am
Space Weather Message Code: SUMSUD
- Serial Number: 287
- Issue Time: 2025 Jun 01 0613 UTC
- SUMMARY: Geomagnetic Sudden Impulse
- Observed: 2025 Jun 01 0542 UTC
- Deviation: 99 nT
- Station: BOU
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Jun 1st, 2025 1:49:50 am
Space Weather Message Code: ALTPX2
- Serial Number: 78
- Issue Time: 2025 Jun 01 0549 UTC
- ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu
- Begin Time: 2025 Jun 01 0540 UTC
- NOAA Scale: S2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
- Spacecraft - Infrequent single-event upsets to satellites are possible.
- Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.
Geophysical Alert Message Issued: Jun 1st, 2025 1:52:56 am
Space Weather Message Code: ALTK05
- Serial Number: 1784
- Issue Time: 2025 Jun 01 0552 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 01 0545 UTC
- Synoptic Period: 0300-0600 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 1st, 2025 1:48:59 am
Space Weather Message Code: WARPX1
- Serial Number: 603
- Issue Time: 2025 Jun 01 0548 UTC
- EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Extension to Serial Number: 602
- Valid From: 2025 May 31 1505 UTC
- Now Valid Until: 2025 Jun 02 1200 UTC
- Warning Condition: Persistence
- Predicted NOAA Scale: S2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
Geophysical Alert Message Issued: Jun 1st, 2025 1:40:09 am
Space Weather Message Code: WARSUD
- Serial Number: 243
- Issue Time: 2025 Jun 01 0540 UTC
- WARNING: Geomagnetic Sudden Impulse expected
- Valid From: 2025 Jun 01 0540 UTC
- Valid To: 2025 Jun 01 0610 UTC
- IP Shock Passage Observed: 2025 Jun 01 0523 UTC
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Jun 1st, 2025 1:41:36 am
Space Weather Message Code: WARK06
- Serial Number: 585
- Issue Time: 2025 Jun 01 0541 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Jun 01 0540 UTC
- Valid To: 2025 Jun 01 2359 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 1st, 2025 1:26:54 am
Space Weather Message Code: ALTEF3
- Serial Number: 3474
- Issue Time: 2025 Jun 01 0526 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3473
- Begin Time: 2025 May 30 0155 UTC
- Yesterday Maximum 2MeV Flux: 9162 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: May 31st, 2025 9:59:27 pm
Space Weather Message Code: ALTK05
- Serial Number: 1783
- Issue Time: 2025 Jun 01 0159 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 01 0159 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.
