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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: Mar 20th, 2026 5:36:31 pm
Space Weather Message Code: ALTK05
- Serial Number: 1980
- Issue Time: 2026 Mar 20 2136 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Mar 20 2126 UTC
- Synoptic Period: 2100-2400 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: Mar 20th, 2026 5:09:53 pm
Space Weather Message Code: SUMSUD
- Serial Number: 296
- Issue Time: 2026 Mar 20 2109 UTC
- SUMMARY: Geomagnetic Sudden Impulse
- Observed: 2026 Mar 20 2053 UTC
- Deviation: 56 nT
- Station: BOU
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Mar 20th, 2026 5:04:30 pm
Space Weather Message Code: ALTK06
- Serial Number: 700
- Issue Time: 2026 Mar 20 2104 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2026 Mar 20 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: Mar 20th, 2026 4:40:35 pm
Space Weather Message Code: WARSUD
- Serial Number: 251
- Issue Time: 2026 Mar 20 2040 UTC
- WARNING: Geomagnetic Sudden Impulse expected
- Valid From: 2026 Mar 20 2050 UTC
- Valid To: 2026 Mar 20 2120 UTC
- IP Shock Passage Observed: 2026 Mar 20 2118 UTC
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Mar 20th, 2026 4:43:58 pm
Space Weather Message Code: WATA50
- Serial Number: 96
- Issue Time: 2026 Mar 20 2043 UTC
- WATCH: Geomagnetic Storm Category G3 Predicted
- Highest Storm Level Predicted by Day:
- Mar 20: G3 (Strong) Mar 21: G3 (Strong) Mar 22: G1 (Minor)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: G3 (Strong) geomagnetic storming is likely due to combined CME effects from events that left the Sun on 16 and 18 Mar.
- 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: Mar 20th, 2026 4:22:56 pm
Space Weather Message Code: WARK06
- Serial Number: 645
- Issue Time: 2026 Mar 20 2022 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2026 Mar 20 2020 UTC
- Valid To: 2026 Mar 21 0600 UTC
- Warning Condition: Onset
- NOAA Scale: G2 - Moderate
- Comment: G2 (Moderate) geomagnetic storm conditions are expected into the the early portions of 21 Mar (UTC) due to CME effects.
- 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 20th, 2026 4:18:58 pm
Space Weather Message Code: ALTK05
- Serial Number: 1979
- Issue Time: 2026 Mar 20 2018 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Mar 20 2018 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: Mar 20th, 2026 3:32:04 pm
Space Weather Message Code: WARK05
- Serial Number: 2208
- Issue Time: 2026 Mar 20 1932 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2026 Mar 20 1930 UTC
- Valid To: 2026 Mar 21 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: Mar 20th, 2026 10:55:19 am
Space Weather Message Code: ALTEF3
- Serial Number: 3652
- Issue Time: 2026 Mar 20 1455 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3651
- Begin Time: 2026 Mar 15 1630 UTC
- Yesterday Maximum 2MeV Flux: 4941 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Mar 20th, 2026 8:39:56 am
Space Weather Message Code: WARK04
- Serial Number: 5290
- Issue Time: 2026 Mar 20 1239 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5289
- Valid From: 2026 Mar 20 0719 UTC
- Now Valid Until: 2026 Mar 21 1200 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.
