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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 4th, 2026 12:49:58 pm
Space Weather Message Code: ALTK04
- Serial Number: 2654
- Issue Time: 2026 May 04 1649 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 May 04 1647 UTC
- Synoptic Period: 1500-1800 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: May 2nd, 2026 7:11:38 am
Space Weather Message Code: ALTTP2
- Serial Number: 1482
- Issue Time: 2026 May 02 1111 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 May 02 1051 UTC
- Estimated Velocity: 641 km/s
- Comment: Likely associated with C-class flare acitivity originating from AR 4420 on the west limb.
- 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.
Geophysical Alert Message Issued: May 1st, 2026 11:50:32 am
Space Weather Message Code: ALTTP2
- Serial Number: 1481
- Issue Time: 2026 May 01 1550 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 May 01 1535 UTC
- Estimated Velocity: 593 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.
Geophysical Alert Message Issued: Apr 30th, 2026 7:59:26 pm
Space Weather Message Code: ALTK05
- Serial Number: 2013
- Issue Time: 2026 Apr 30 2359 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Apr 30 2359 UTC
- Synoptic Period: 2100-2400 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: Apr 30th, 2026 7:11:27 pm
Space Weather Message Code: WARK04
- Serial Number: 5332
- Issue Time: 2026 Apr 30 2311 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5331
- Valid From: 2026 Apr 30 2005 UTC
- Now Valid Until: 2026 May 01 1500 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: Apr 30th, 2026 7:09:26 pm
Space Weather Message Code: WARK05
- Serial Number: 2230
- Issue Time: 2026 Apr 30 2309 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2026 Apr 30 2309 UTC
- Valid To: 2026 May 01 0900 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: Apr 30th, 2026 4:35:36 pm
Space Weather Message Code: ALTK04
- Serial Number: 2653
- Issue Time: 2026 Apr 30 2035 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Apr 30 2035 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: Apr 30th, 2026 4:06:19 pm
Space Weather Message Code: WARK04
- Serial Number: 5331
- Issue Time: 2026 Apr 30 2006 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Apr 30 2005 UTC
- Valid To: 2026 May 01 0600 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: Apr 26th, 2026 9:06:25 pm
Space Weather Message Code: ALTTP2
- Serial Number: 1480
- Issue Time: 2026 Apr 27 0106 UTC
- ALERT: Type II Radio Emission
- Begin Time: 2026 Apr 26 2257 UTC
- Estimated Velocity: 834 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.
Geophysical Alert Message Issued: Apr 26th, 2026 7:33:07 pm
Space Weather Message Code: WARK04
- Serial Number: 5330
- Issue Time: 2026 Apr 26 2333 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5329
- Valid From: 2026 Apr 26 0359 UTC
- Now Valid Until: 2026 Apr 27 0900 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.
