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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: Oct 17th, 2025 1:56:22 pm
Space Weather Message Code: WARK04
- Serial Number: 5112
- Issue Time: 2025 Oct 17 1756 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5111
- Valid From: 2025 Oct 17 1034 UTC
- Now Valid Until: 2012 Oct 18 1800 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: Oct 17th, 2025 8:01:34 am
Space Weather Message Code: ALTK04
- Serial Number: 2598
- Issue Time: 2025 Oct 17 1201 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Oct 17 1159 UTC
- Synoptic Period: 0900-1200 UTC
- Active Warning: Yes
- 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: Oct 17th, 2025 7:22:01 am
Space Weather Message Code: ALTEF3
- Serial Number: 3550
- Issue Time: 2025 Oct 17 1122 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3549
- Begin Time: 2025 Oct 01 1325 UTC
- Yesterday Maximum 2MeV Flux: 3769 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Oct 17th, 2025 6:34:40 am
Space Weather Message Code: WARK04
- Serial Number: 5111
- Issue Time: 2025 Oct 17 1034 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Oct 17 1034 UTC
- Valid To: 2025 Oct 17 1800 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: Oct 16th, 2025 5:30:30 am
Space Weather Message Code: ALTEF3
- Serial Number: 3549
- Issue Time: 2025 Oct 16 0930 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3548
- Begin Time: 2025 Oct 01 1325 UTC
- Yesterday Maximum 2MeV Flux: 2847 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Oct 15th, 2025 12:15:02 pm
Space Weather Message Code: SUM10R
- Serial Number: 881
- Issue Time: 2025 Oct 15 1615 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 Oct 15 1521 UTC
- Maximum Time: 2025 Oct 15 1524 UTC
- End Time: 2025 Oct 15 1532 UTC
- Duration: 11 minutes
- Peak Flux: 180 sfu
- Latest Penticton Noon Flux: 154 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: Oct 15th, 2025 6:41:27 am
Space Weather Message Code: ALTEF3
- Serial Number: 3548
- Issue Time: 2025 Oct 15 1041 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3547
- Begin Time: 2025 Oct 01 1325 UTC
- Yesterday Maximum 2MeV Flux: 5134 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Oct 14th, 2025 11:00:12 pm
Space Weather Message Code: ALTK04
- Serial Number: 2597
- Issue Time: 2025 Oct 15 0300 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Oct 15 0259 UTC
- Synoptic Period: 0000-0300 UTC
- Active Warning: Yes
- 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: Oct 14th, 2025 10:39:34 pm
Space Weather Message Code: WARK04
- Serial Number: 5110
- Issue Time: 2025 Oct 15 0239 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Oct 15 0238 UTC
- Valid To: 2025 Oct 15 1500 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: Oct 14th, 2025 3:43:37 pm
Space Weather Message Code: WATA30
- Serial Number: 259
- Issue Time: 2025 Oct 14 1943 UTC
- WATCH: Geomagnetic Storm Category G2 Predicted
- Highest Storm Level Predicted by Day:
- Oct 15: None (Below G1) Oct 16: G2 (Moderate) Oct 17: 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.
