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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 31st, 2026 8:31:18 am
Space Weather Message Code: WATA20
- Serial Number: 1106
- Issue Time: 2026 Mar 31 1231 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Mar 31: G2 (Moderate) Apr 01: G1 (Minor) Apr 02: G1 (Minor)
- 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 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 31st, 2026 8:27:33 am
Space Weather Message Code: WATA20
- Serial Number: 1104
- Issue Time: 2026 Mar 31 1227 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Apr 01: G2 (Moderate) Apr 02: G1 (Minor) Apr 03: None (Below G1)
- 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 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 31st, 2026 8:28:56 am
Space Weather Message Code: WATA20
- Serial Number: 1105
- Issue Time: 2026 Mar 31 1228 UTC
- CANCEL WATCH: Geomagnetic Storm Category G1 Predicted
- Cancel Serial Number: 1104
- Original Issue Time: 2026 Mar 31 1227 UTC
- Comment: cancelled due to incorrect date.
- 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 30th, 2026 4:55:41 am
Space Weather Message Code: WARK04
- Serial Number: 5305
- Issue Time: 2026 Mar 30 0855 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5304
- Valid From: 2026 Mar 29 1546 UTC
- Now Valid Until: 2026 Mar 30 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: Mar 30th, 2026 3:42:30 am
Space Weather Message Code: ALTEF3
- Serial Number: 3661
- Issue Time: 2026 Mar 30 0742 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3660
- Begin Time: 2026 Mar 22 1430 UTC
- Yesterday Maximum 2MeV Flux: 3755 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Mar 30th, 2026 2:27:43 am
Space Weather Message Code: WATA30
- Serial Number: 268
- Issue Time: 2026 Mar 30 0627 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- Mar 30: G1 (Minor) Mar 31: G2 (Moderate) Apr 01: G1 (Minor)
- 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 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 30th, 2026 1:43:50 am
Space Weather Message Code: SUM10R
- Serial Number: 903
- Issue Time: 2026 Mar 30 0543 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2026 Mar 30 0254 UTC
- Maximum Time: 2026 Mar 30 0304 UTC
- End Time: 2026 Mar 30 0342 UTC
- Duration: 48 minutes
- Peak Flux: 1800 sfu
- Latest Penticton Noon Flux: 158 sfu
- Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
Geophysical Alert Message Issued: Mar 30th, 2026 1:16:51 am
Space Weather Message Code: SUMX01
- Serial Number: 213
- Issue Time: 2026 Mar 30 0516 UTC
- CANCEL SUMMARY: X-ray Event exceeded X1
- Cancel Serial Number: 212
- Original Issue Time: 2026 Mar 30 0353 UTC
- Comment: The flare maximum was recorded as an X1.4.
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
- Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Geophysical Alert Message Issued: Mar 30th, 2026 1:18:40 am
Space Weather Message Code: SUMX01
- Serial Number: 214
- Issue Time: 2026 Mar 30 0518 UTC
- SUMMARY: X-ray Event exceeded X1
- Begin Time: 2026 Mar 30 0247 UTC
- Maximum Time: 2026 Mar 30 0319 UTC
- End Time: 2026 Mar 30 0344 UTC
- X-ray Class: X1,4
- Location: S27E42
- NOAA Scale: R3 - Strong
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
- Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
Geophysical Alert Message Issued: Mar 29th, 2026 11:22:36 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1473
- Issue Time: 2026 Mar 30 0322 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Mar 30 0300 UTC
- Estimated Velocity: 1872 km/s
- Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
