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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: Sep 1st, 2025 4:39:06 pm
Space Weather Message Code: WARSUD
- Serial Number: 244
- Issue Time: 2025 Sep 01 2039 UTC
- WARNING: Geomagnetic Sudden Impulse expected
- Valid From: 2025 Sep 01 2045 UTC
- Valid To: 2025 Sep 01 2145 UTC
- IP Shock Passage Observed: 2025 Sep 01 2030 UTC
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Sep 1st, 2025 4:41:05 pm
Space Weather Message Code: WARK04
- Serial Number: 5067
- Issue Time: 2025 Sep 01 2041 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Sep 01 2040 UTC
- Valid To: 2025 Sep 02 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: Sep 1st, 2025 4:44:47 pm
Space Weather Message Code: WARK05
- Serial Number: 2090
- Issue Time: 2025 Sep 01 2044 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Sep 01 2041 UTC
- Valid To: 2025 Sep 02 2059 UTC
- Warning Condition: Onset
- NOAA Scale: G1 - Minor
- Comment: Minor geomagnetic storming due to arrival of the 30 Aug CME is expected to commence and persist through the majority of 02 Sep.
- 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: Sep 1st, 2025 5:34:09 am
Space Weather Message Code: WARPX1
- Serial Number: 610
- Issue Time: 2025 Sep 01 0934 UTC
- WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Valid From: 2025 Sep 01 0930 UTC
- Valid To: 2025 Sep 01 2359 UTC
- Warning Condition: Onset
- Predicted NOAA Scale: S1 - Minor
- 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: Aug 31st, 2025 12:58:29 am
Space Weather Message Code: WATA50
- Serial Number: 89
- Issue Time: 2025 Aug 31 0458 UTC
- WATCH: Geomagnetic Storm Category G3 Predicted
- Highest Storm Level Predicted by Day:
- Aug 31: None (Below G1) Sep 01: G2 (Moderate) Sep 02: G3 (Strong)
- 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 50 degrees Geomagnetic Latitude.
- Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
- Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
- Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
- Radio - HF (high frequency) radio may be intermittent.
- Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Geophysical Alert Message Issued: Aug 28th, 2025 7:29:56 am
Space Weather Message Code: SUMPX1
- Serial Number: 124
- Issue Time: 2025 Aug 28 1129 UTC
- SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
- Begin Time: 2025 Aug 25 1355 UTC
- Maximum Time: 2025 Aug 27 0740 UTC
- End Time: 2025 Aug 27 1510 UTC
- Maximum 10MeV Flux: 13 pfu
- NOAA Scale: S1 - Minor
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Aug 27th, 2025 4:48:08 am
Space Weather Message Code: WARPX1
- Serial Number: 609
- Issue Time: 2025 Aug 27 0848 UTC
- EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Extension to Serial Number: 608
- Valid From: 2025 Aug 24 2340 UTC
- Now Valid Until: 2025 Aug 27 2359 UTC
- Warning Condition: Persistence
- Predicted NOAA Scale: S1 - Minor
- 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: Aug 26th, 2025 12:46:54 pm
Space Weather Message Code: WARPX1
- Serial Number: 608
- Issue Time: 2025 Aug 26 1646 UTC
- EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Extension to Serial Number: 607
- Valid From: 2025 Aug 24 2340 UTC
- Now Valid Until: 2025 Aug 27 0900 UTC
- Warning Condition: Persistence
- Predicted NOAA Scale: S1 - Minor
- 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: Aug 26th, 2025 7:26:39 am
Space Weather Message Code: WARPX1
- Serial Number: 607
- Issue Time: 2025 Aug 26 1126 UTC
- EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Extension to Serial Number: 606
- Valid From: 2025 Aug 24 2340 UTC
- Now Valid Until: 2025 Aug 26 2359 UTC
- Warning Condition: Persistence
- Predicted NOAA Scale: S1 - Minor
- 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: Aug 25th, 2025 3:24:25 pm
Space Weather Message Code: WARPX1
- Serial Number: 606
- Issue Time: 2025 Aug 25 1924 UTC
- EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Extension to Serial Number: 605
- Valid From: 2025 Aug 24 2340 UTC
- Now Valid Until: 2025 Aug 26 1200 UTC
- Warning Condition: Persistence
- Predicted NOAA Scale: S1 - Minor
- Comment: The greater than 10MeV proton flux continues to be at or near the 10 pfu threshold.
- 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.
