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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: Jul 22nd, 2025 4:50:47 pm
Space Weather Message Code: ALTK04
- Serial Number: 2580
- Issue Time: 2025 Jul 22 2050 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Jul 22 2046 UTC
- Synoptic Period: 1800-2100 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: Jul 22nd, 2025 4:51:52 pm
Space Weather Message Code: WARK05
- Serial Number: 2082
- Issue Time: 2025 Jul 22 2051 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Jul 22 2051 UTC
- Valid To: 2025 Jul 23 0600 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: Jul 22nd, 2025 3:24:12 pm
Space Weather Message Code: WARK04
- Serial Number: 5043
- Issue Time: 2025 Jul 22 1924 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Jul 22 1922 UTC
- Valid To: 2025 Jul 23 1200 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: Jul 22nd, 2025 1:07:05 am
Space Weather Message Code: ALTEF3
- Serial Number: 3502
- Issue Time: 2025 Jul 22 0507 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3501
- Begin Time: 2025 Jul 14 1550 UTC
- Yesterday Maximum 2MeV Flux: 13015 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 21st, 2025 3:44:48 pm
Space Weather Message Code: WATA20
- Serial Number: 1052
- Issue Time: 2025 Jul 21 1944 UTC
- WATCH: Geomagnetic Storm Category G1 Predicted
- Highest Storm Level Predicted by Day:
- Jul 22: None (Below G1) Jul 23: G1 (Minor) Jul 24: None (Below G1)
- THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
- Comment: G1 (Minor) geomagnetic storming is likely on 23 Jul due to recurrent, negative polarity coronal hole high speed stream effects.
- 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: Jul 21st, 2025 1:00:06 am
Space Weather Message Code: ALTEF3
- Serial Number: 3501
- Issue Time: 2025 Jul 21 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3500
- Begin Time: 2025 Jul 14 1550 UTC
- Yesterday Maximum 2MeV Flux: 14495 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 20th, 2025 2:05:11 am
Space Weather Message Code: ALTEF3
- Serial Number: 3500
- Issue Time: 2025 Jul 20 0605 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3499
- Begin Time: 2025 Jul 14 1550 UTC
- Yesterday Maximum 2MeV Flux: 11583 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 19th, 2025 1:00:37 am
Space Weather Message Code: ALTEF3
- Serial Number: 3499
- Issue Time: 2025 Jul 19 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3498
- Begin Time: 2025 Jul 14 1550 UTC
- Yesterday Maximum 2MeV Flux: 10273 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jul 18th, 2025 10:37:57 am
Space Weather Message Code: WARK04
- Serial Number: 5042
- Issue Time: 2025 Jul 18 1437 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5041
- Valid From: 2025 Jul 17 0840 UTC
- Now Valid Until: 2025 Jul 18 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: Jul 18th, 2025 1:00:47 am
Space Weather Message Code: ALTEF3
- Serial Number: 3498
- Issue Time: 2025 Jul 18 0500 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3497
- Begin Time: 2025 Jul 14 1550 UTC
- Yesterday Maximum 2MeV Flux: 6590 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
