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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: Apr 15th, 2025 6:04:54 pm
Space Weather Message Code: ALTK05
- Serial Number: 1746
- Issue Time: 2025 Apr 15 2204 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Apr 15 2200 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 15th, 2025 5:13:44 pm
Space Weather Message Code: SUMSUD
- Serial Number: 286
- Issue Time: 2025 Apr 15 2113 UTC
- SUMMARY: Geomagnetic Sudden Impulse
- Observed: 2025 Apr 15 1859 UTC
- Deviation: 68 nT
- Station: BOU
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
Geophysical Alert Message Issued: Apr 15th, 2025 3:52:00 pm
Space Weather Message Code: ALTK06
- Serial Number: 624
- Issue Time: 2025 Apr 15 1952 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Apr 15 1944 UTC
- Synoptic Period: 1800-2100 UTC
- Active Warning: Yes
- 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: Apr 15th, 2025 2:59:26 pm
Space Weather Message Code: ALTK05
- Serial Number: 1745
- Issue Time: 2025 Apr 15 1859 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Apr 15 1859 UTC
- Synoptic Period: 1800-2100 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 15th, 2025 2:50:56 pm
Space Weather Message Code: WARK06
- Serial Number: 573
- Issue Time: 2025 Apr 15 1850 UTC
- WARNING: Geomagnetic K-Index of 6 expected
- Valid From: 2025 Apr 15 1900 UTC
- Valid To: 2025 Apr 16 0600 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: Apr 15th, 2025 1:31:49 pm
Space Weather Message Code: WARK05
- Serial Number: 2019
- Issue Time: 2025 Apr 15 1731 UTC
- WARNING: Geomagnetic K-index of 5 expected
- Valid From: 2025 Apr 15 1730 UTC
- Valid To: 2025 Apr 16 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: Apr 15th, 2025 1:32:48 pm
Space Weather Message Code: ALTK05
- Serial Number: 1744
- Issue Time: 2025 Apr 15 1732 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Apr 15 1732 UTC
- Synoptic Period: 1500-1800 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 15th, 2025 1:29:02 pm
Space Weather Message Code: ALTK04
- Serial Number: 2547
- Issue Time: 2025 Apr 15 1729 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2025 Apr 15 1725 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: Apr 15th, 2025 1:07:53 pm
Space Weather Message Code: WARK04
- Serial Number: 4925
- Issue Time: 2025 Apr 15 1707 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2025 Apr 15 1705 UTC
- Valid To: 2025 Apr 16 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: Apr 15th, 2025 12:51:20 pm
Space Weather Message Code: WARSUD
- Serial Number: 242
- Issue Time: 2025 Apr 15 1651 UTC
- WARNING: Geomagnetic Sudden Impulse expected
- Valid From: 2025 Apr 15 1729 UTC
- Valid To: 2025 Apr 15 1759 UTC
- IP Shock Passage Observed: 2025 Apr 15 1642 UTC
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
