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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 3rd, 2026 5:01:33 pm
Space Weather Message Code: ALTK06
- Serial Number: 711
- Issue Time: 2026 Apr 03 2101 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2026 Apr 03 2059 UTC
- Synoptic Period: 1800-2100 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: Apr 3rd, 2026 5:02:39 pm
Space Weather Message Code: WARK04
- Serial Number: 5310
- Issue Time: 2026 Apr 03 2102 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5309
- Valid From: 2026 Apr 02 0047 UTC
- Now Valid Until: 2026 Apr 04 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: Apr 3rd, 2026 3:08:43 pm
Space Weather Message Code: ALTK05
- Serial Number: 2004
- Issue Time: 2026 Apr 03 1908 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Apr 03 1906 UTC
- Synoptic Period: 1800-2100 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 3rd, 2026 12:47:26 pm
Space Weather Message Code: ALTK07
- Serial Number: 216
- Issue Time: 2026 Apr 03 1647 UTC
- ALERT: Geomagnetic K-index of 7
- Threshold Reached: 2026 Apr 03 1646 UTC
- Synoptic Period: 1500-1800 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: Apr 3rd, 2026 12:25:08 pm
Space Weather Message Code: WARK07
- Serial Number: 148
- Issue Time: 2026 Apr 03 1625 UTC
- WARNING: Geomagnetic K-index of 7 or greater expected
- Valid From: 2026 Apr 03 1625 UTC
- Valid To: 2026 Apr 03 2359 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: Apr 3rd, 2026 11:55:55 am
Space Weather Message Code: ALTK06
- Serial Number: 710
- Issue Time: 2026 Apr 03 1555 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2026 Apr 03 1555 UTC
- Synoptic Period: 1500-1800 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: Apr 3rd, 2026 11:52:05 am
Space Weather Message Code: WARK06
- Serial Number: 652
- Issue Time: 2026 Apr 03 1552 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2026 Apr 03 1551 UTC
- Valid To: 2026 Apr 03 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: Apr 3rd, 2026 11:45:12 am
Space Weather Message Code: SUMSUD
- Serial Number: 298
- Issue Time: 2026 Apr 03 1545 UTC
- SUMMARY: Geomagnetic Sudden Impulse
- Observed: 2026 Apr 03 1529 UTC
- Deviation: 72 nT
- Station: HAD
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Apr 3rd, 2026 11:42:14 am
Space Weather Message Code: ALTK05
- Serial Number: 2003
- Issue Time: 2026 Apr 03 1542 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Apr 03 1535 UTC
- Synoptic Period: 1500-1800 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 3rd, 2026 11:29:23 am
Space Weather Message Code: WARSUD
- Serial Number: 253
- Issue Time: 2026 Apr 03 1529 UTC
- WARNING: Geomagnetic Sudden Impulse expected
- Valid From: 2026 Apr 03 1529 UTC
- Valid To: 2026 Apr 03 1550 UTC
- IP Shock Passage Observed: 2026 Apr 03 1503 UTC
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
