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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: Jun 1st, 2025 1:40:09 am
Space Weather Message Code: WARSUD
- Serial Number: 243
- Issue Time: 2025 Jun 01 0540 UTC
- WARNING: Geomagnetic Sudden Impulse expected
- Valid From: 2025 Jun 01 0540 UTC
- Valid To: 2025 Jun 01 0610 UTC
- IP Shock Passage Observed: 2025 Jun 01 0523 UTC
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Jun 1st, 2025 1:41:36 am
Space Weather Message Code: WARK06
- Serial Number: 585
- Issue Time: 2025 Jun 01 0541 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Jun 01 0540 UTC
- Valid To: 2025 Jun 01 2359 UTC
- Warning Condition: Onset
- NOAA Scale: G2 - Moderate
- 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: Jun 1st, 2025 1:26:54 am
Space Weather Message Code: ALTEF3
- Serial Number: 3474
- Issue Time: 2025 Jun 01 0526 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3473
- Begin Time: 2025 May 30 0155 UTC
- Yesterday Maximum 2MeV Flux: 9162 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: May 31st, 2025 9:59:27 pm
Space Weather Message Code: ALTK05
- Serial Number: 1783
- Issue Time: 2025 Jun 01 0159 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 01 0159 UTC
- Synoptic Period: 0000-0300 UTC
- Active Warning: Yes
- NOAA Scale: G1 - Minor
- 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: May 31st, 2025 8:55:23 pm
Space Weather Message Code: WARK05
- Serial Number: 2051
- Issue Time: 2025 Jun 01 0055 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Jun 01 0054 UTC
- Valid To: 2025 Jun 01 2359 UTC
- Warning Condition: Onset
- NOAA Scale: G1 - Minor
- 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: May 31st, 2025 6:26:27 pm
Space Weather Message Code: WARK04
- Serial Number: 4980
- Issue Time: 2025 May 31 2226 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 4979
- Valid From: 2025 May 28 1747 UTC
- Now Valid Until: 2025 Jun 01 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: May 31st, 2025 3:57:23 pm
Space Weather Message Code: WATA99
- Serial Number: 10
- Issue Time: 2025 May 31 1957 UTC
- WATCH: Geomagnetic Storm Category G4 or Greater Predicted
- Highest Storm Level Predicted by Day:
- Jun 01: G4 (Severe) 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 1:17:52 pm
Space Weather Message Code: ALTPX1
- Serial Number: 358
- Issue Time: 2025 May 31 1717 UTC
- ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
- Begin Time: 2025 May 31 1717 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: May 31st, 2025 12:51:31 pm
Space Weather Message Code: ALTTP4
- Serial Number: 682
- Issue Time: 2025 May 31 1651 UTC
- ALERT: Type IV Radio Emission
- Begin Time: 2025 May 31 1556 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 11:58:24 am
Space Weather Message Code: SUM10R
- Serial Number: 872
- Issue Time: 2025 May 31 1558 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2025 May 31 1543 UTC
- Maximum Time: 2025 May 31 1544 UTC
- End Time: 2025 May 31 1547 UTC
- Duration: 4 minutes
- Peak Flux: 210 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.
