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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 5:29:51 am
Space Weather Message Code: ALTK05
- Serial Number: 1786
- Issue Time: 2025 Jun 01 0929 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 01 0924 UTC
- Synoptic Period: 0900-1200 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 4:04:56 am
Space Weather Message Code: ALTK08
- Serial Number: 51
- Issue Time: 2025 Jun 01 0804 UTC
- ALERT: Geomagnetic K-index of 8, 9-
- Threshold Reached: 2025 Jun 01 0800 UTC
- Synoptic Period: 0600-0900 UTC
- Active Warning: Yes
- NOAA Scale: G4 - Severe
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
- Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
- Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
- Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
- Radio - HF (high frequency) radio propagation sporadic or blacked out.
- Aurora - Aurora may be seen as low as Alabama and northern California.
Geophysical Alert Message Issued: Jun 1st, 2025 3:20:56 am
Space Weather Message Code: WARK07
- Serial Number: 127
- Issue Time: 2025 Jun 01 0720 UTC
- WARNING: Geomagnetic K-index of 7 or greater expected
- Valid From: 2025 Jun 01 0720 UTC
- Valid To: 2025 Jun 01 2100 UTC
- Warning Condition: Onset
- NOAA Scale: G3 or greater
- 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: Jun 1st, 2025 3:21:27 am
Space Weather Message Code: ALTK07
- Serial Number: 184
- Issue Time: 2025 Jun 01 0721 UTC
- ALERT: Geomagnetic K-index of 7
- Threshold Reached: 2025 Jun 01 0721 UTC
- Synoptic Period: 0600-0900 UTC
- Active Warning: Yes
- NOAA Scale: G3 - Strong
- 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: 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.
