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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: May 31st, 2025 11:04:46 am
Space Weather Message Code: WATA99
- Serial Number: 9
- Issue Time: 2025 May 31 1504 UTC
- WATCH: Geomagnetic Storm Category G4 or Greater Predicted
- Highest Storm Level Predicted by Day:
- Jun 01: G3 (Strong) Jun 02: G4 (Severe) Jun 03: 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 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: May 31st, 2025 11:06:25 am
Space Weather Message Code: WARPX1
- Serial Number: 602
- Issue Time: 2025 May 31 1506 UTC
- WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Valid From: 2025 May 31 1505 UTC
- Valid To: 2025 Jun 01 0600 UTC
- Warning Condition: Onset
- Predicted NOAA Scale: S1 - Minor
- 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.
Geophysical Alert Message Issued: May 31st, 2025 9:40:10 am
Space Weather Message Code: SUM10R
- Serial Number: 871
- Issue Time: 2025 May 31 1340 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 May 31 1327 UTC
- Maximum Time: 2025 May 31 1327 UTC
- End Time: 2025 May 31 1327 UTC
- Duration: 1 minutes
- Peak Flux: 330 sfu
- Latest Penticton Noon Flux: 157 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: May 31st, 2025 4:44:42 am
Space Weather Message Code: ALTTP4
- Serial Number: 681
- Issue Time: 2025 May 31 0844 UTC
- ALERT: Type IV Radio Emission
- Begin Time: 2025 May 31 0734 UTC
- Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
Geophysical Alert Message Issued: May 31st, 2025 4:43:38 am
Space Weather Message Code: SUM10R
- Serial Number: 870
- Issue Time: 2025 May 31 0843 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 May 31 0816 UTC
- Maximum Time: 2025 May 31 0816 UTC
- End Time: 2025 May 31 0817 UTC
- Duration: 1 minutes
- Peak Flux: 220 sfu
- Latest Penticton Noon Flux: 157 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: May 31st, 2025 2:34:29 am
Space Weather Message Code: ALTEF3
- Serial Number: 3473
- Issue Time: 2025 May 31 0634 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3472
- Begin Time: 2025 May 30 0155 UTC
- Yesterday Maximum 2MeV Flux: 4876 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: May 31st, 2025 1:08:59 am
Space Weather Message Code: ALTTP4
- Serial Number: 680
- Issue Time: 2025 May 31 0508 UTC
- ALERT: Type IV Radio Emission
- Begin Time: 2025 May 31 0015 UTC
- Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
Geophysical Alert Message Issued: May 30th, 2025 9:41:17 pm
Space Weather Message Code: SUMXM5
- Serial Number: 291
- Issue Time: 2025 May 31 0141 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2025 May 30 2331 UTC
- Maximum Time: 2025 May 31 0005 UTC
- End Time: 2025 May 31 0132 UTC
- X-ray Class: M8.1
- Location: N14E10
- NOAA Scale: R2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
- Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
Geophysical Alert Message Issued: May 30th, 2025 9:46:14 pm
Space Weather Message Code: SUM10R
- Serial Number: 869
- Issue Time: 2025 May 31 0146 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 May 30 2339 UTC
- Maximum Time: 2025 May 30 2356 UTC
- End Time: 2025 May 31 0121 UTC
- Duration: 102 minutes
- Peak Flux: 1100 sfu
- Latest Penticton Noon Flux: 157 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: May 30th, 2025 8:23:09 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1416
- Issue Time: 2025 May 31 0023 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2025 May 30 2353 UTC
- Estimated Velocity: 1938 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.
