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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 18th, 2026 5:14:07 pm
Space Weather Message Code: WATA30
- Serial Number: 265
- Issue Time: 2026 Mar 18 2114 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- Mar 19: G2 (Moderate) Mar 20: G2 (Moderate) Mar 21: G2 (Moderate)
- 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 18th, 2026 4:59:48 am
Space Weather Message Code: ALTTP2
- Serial Number: 1470
- Issue Time: 2026 Mar 18 0859 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Mar 18 0840 UTC
- Estimated Velocity: 866 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.
Geophysical Alert Message Issued: Mar 18th, 2026 5:03:34 am
Space Weather Message Code: SUM10R
- Serial Number: 902
- Issue Time: 2026 Mar 18 0903 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2026 Mar 18 0833 UTC
- Maximum Time: 2026 Mar 18 0835 UTC
- End Time: 2026 Mar 18 0839 UTC
- Duration: 6 minutes
- Peak Flux: 229 sfu
- Latest Penticton Noon Flux: 111 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 18th, 2026 12:59:44 am
Space Weather Message Code: ALTEF3
- Serial Number: 3650
- Issue Time: 2026 Mar 18 0459 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3649
- Begin Time: 2026 Mar 15 1630 UTC
- Yesterday Maximum 2MeV Flux: 2233 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Mar 17th, 2026 2:36:37 pm
Space Weather Message Code: WATA30
- Serial Number: 264
- Issue Time: 2026 Mar 17 1836 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- Mar 18: None (Below G1) Mar 19: G2 (Moderate) Mar 20: G1 (Minor)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: CME influences are likely on 19 Mar with any effects continuing, but weakening, into 20 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 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 17th, 2026 10:03:49 am
Space Weather Message Code: ALTEF3
- Serial Number: 3649
- Issue Time: 2026 Mar 17 1403 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3648
- Begin Time: 2026 Mar 15 1630 UTC
- Yesterday Maximum 2MeV Flux: 2213 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Mar 16th, 2026 5:08:59 pm
Space Weather Message Code: WATA30
- Serial Number: 264
- Issue Time: 2026 Mar 16 2108 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- Mar 17: None (Below G1) Mar 18: None (Below G1) Mar 19: G2 (Moderate)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: G2 (Moderate) geomagnetic storming is likely on 19 Mar with the arrival of a CME that left the Sun on 16 Mar. This is a reissue of the previous watch to correct an internal system error.
- 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 16th, 2026 4:25:18 pm
Space Weather Message Code: WATA30
- Serial Number: 264
- Issue Time: 2026 Mar 16 2025 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- Mar 17: None (Below G1) Mar 18: None (Below G1) Mar 19: G2 (Moderate)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: G2 (Moderate) geomagnetic storming is likely on 19 Mar with the arrival of the 16 Mar CME event. This event was associated with an M2.7 flare from AR 4392.
- 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 16th, 2026 9:20:36 am
Space Weather Message Code: ALTEF3
- Serial Number: 3648
- Issue Time: 2026 Mar 16 1320 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3647
- Begin Time: 2026 Mar 15 1630 UTC
- Yesterday Maximum 2MeV Flux: 1429 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Mar 16th, 2026 8:29:37 am
Space Weather Message Code: SUM10R
- Serial Number: 901
- Issue Time: 2026 Mar 16 1229 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2026 Mar 16 1209 UTC
- Maximum Time: 2026 Mar 16 1213 UTC
- End Time: 2026 Mar 16 1217 UTC
- Duration: 8 minutes
- Peak Flux: 380 sfu
- Latest Penticton Noon Flux: 109 sfu
- Comment: Associated with M2.7 flare from AR 4392.
- 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.
