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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: Jan 19th, 2026 1:19:10 pm
Space Weather Message Code: ALTPX4
- Serial Number: 2
- Issue Time: 2026 Jan 19 1819 UTC
- ALERT: Proton Event 10MeV Integral Flux exceeded 10000pfu
- Begin Time: 2026 Jan 19 1810 UTC
- NOAA Scale: S4 - Severe
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience significant radiation exposures. Astronauts on EVA (extra-vehicular activity) are exposed to unavoidable radiation hazard.
- Spacecraft - Satellites may experience memory device problems and noise on imaging systems; star-trackers may cause orientation problems; solar panel efficiency may be degraded.
- Radio - Widespread blackout of polar HF (high frequency) communications likely.
Geophysical Alert Message Issued: Jan 19th, 2026 1:14:04 pm
Space Weather Message Code: WARPX1
- Serial Number: 620
- Issue Time: 2026 Jan 19 1814 UTC
- EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Extension to Serial Number: 619
- Valid From: 2026 Jan 18 2130 UTC
- Now Valid Until: 2026 Jan 20 2359 UTC
- Warning Condition: Persistence
- Predicted NOAA Scale: S1 - Minor
- Comment: This warning UPGRADED from S3 (Strong) to S4 (Severe) due to increasing Proton flux levels.
- 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: Jan 19th, 2026 7:03:26 am
Space Weather Message Code: WATA99
- Serial Number: 13
- Issue Time: 2026 Jan 19 1203 UTC
- WATCH: Geomagnetic Storm Category G4 or Greater Predicted
- Highest Storm Level Predicted by Day:
- Jan 20: G4 (Severe) Jan 21: G1 (Minor) Jan 22: 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 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: Jan 19th, 2026 5:29:56 am
Space Weather Message Code: ALTPX3
- Serial Number: 34
- Issue Time: 2026 Jan 19 1029 UTC
- ALERT: Proton Event 10MeV Integral Flux exceeded 1000pfu
- Begin Time: 2026 Jan 19 1020 UTC
- NOAA Scale: S3 - Strong
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience increasing radiation exposures. Astronauts on EVA (extra-vehicular activity) are exposed to elevated radiation levels.
- Spacecraft - Single-event upsets to satellite operations, noise in imaging systems, and slight reduction of efficiency in solar panels are likely.
- Radio - Degraded or episodically blacked-out polar HF (high frequency) radio propagation.
Geophysical Alert Message Issued: Jan 19th, 2026 12:00:12 am
Space Weather Message Code: ALTEF3
- Serial Number: 3605
- Issue Time: 2026 Jan 19 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3604
- Begin Time: 2026 Jan 12 1040 UTC
- Yesterday Maximum 2MeV Flux: 4619 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jan 18th, 2026 11:47:37 pm
Space Weather Message Code: ALTPX2
- Serial Number: 80
- Issue Time: 2026 Jan 19 0447 UTC
- ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu
- Begin Time: 2026 Jan 19 0440 UTC
- NOAA Scale: S2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
- Spacecraft - Infrequent single-event upsets to satellites are possible.
- Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.
Geophysical Alert Message Issued: Jan 18th, 2026 11:11:39 pm
Space Weather Message Code: WARPX1
- Serial Number: 618
- Issue Time: 2026 Jan 19 0411 UTC
- EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Extension to Serial Number: 617
- Valid From: 2026 Jan 18 2130 UTC
- Now Valid Until: 2026 Jan 19 2359 UTC
- Warning Condition: Persistence
- Predicted NOAA Scale: S2 - Moderate
- Comment: This warning UPGRADED from S1 (Minor) to S2 (Moderate) due to increasing Proton flux levels.
- 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: Jan 18th, 2026 6:54:41 pm
Space Weather Message Code: WARK04
- Serial Number: 5225
- Issue Time: 2026 Jan 18 2354 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5224
- Valid From: 2026 Jan 16 0254 UTC
- Now Valid Until: 2026 Jan 19 2359 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: Jan 18th, 2026 6:11:01 pm
Space Weather Message Code: ALTPX1
- Serial Number: 362
- Issue Time: 2026 Jan 18 2311 UTC
- ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
- Begin Time: 2026 Jan 18 2255 UTC
- 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: Jan 18th, 2026 4:30:41 pm
Space Weather Message Code: WARPX1
- Serial Number: 617
- Issue Time: 2026 Jan 18 2130 UTC
- WARNING: Proton 10MeV Integral Flux above 10pfu expected
- Valid From: 2026 Jan 18 2130 UTC
- Valid To: 2026 Jan 19 1200 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.
