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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 3rd, 2025 3:29:46 am
Space Weather Message Code: ALTK06
- Serial Number: 644
- Issue Time: 2025 Jun 03 0729 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Jun 03 0722 UTC
- Synoptic Period: 0600-0900 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: Jun 3rd, 2025 2:32:34 am
Space Weather Message Code: ALTK05
- Serial Number: 1800
- Issue Time: 2025 Jun 03 0632 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 03 0624 UTC
- Synoptic Period: 0600-0900 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: Jun 3rd, 2025 2:07:12 am
Space Weather Message Code: ALTEF3
- Serial Number: 3476
- Issue Time: 2025 Jun 03 0607 UTC
- CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
- Continuation of Serial Number: 3475
- Begin Time: 2025 Jun 02 1505 UTC
- Yesterday Maximum 2MeV Flux: 3370 pfu
- Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Geophysical Alert Message Issued: Jun 3rd, 2025 1:35:49 am
Space Weather Message Code: ALTK07
- Serial Number: 189
- Issue Time: 2025 Jun 03 0535 UTC
- ALERT: Geomagnetic K-index of 7
- Threshold Reached: 2025 Jun 03 0533 UTC
- Synoptic Period: 0300-0600 UTC
- Active Warning: Yes
- NOAA Scale: G3 - Strong
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
- Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
- Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
- Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
- Radio - HF (high frequency) radio may be intermittent.
- Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Geophysical Alert Message Issued: Jun 2nd, 2025 9:14:29 pm
Space Weather Message Code: ALTK05
- Serial Number: 1798
- Issue Time: 2025 Jun 03 0114 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 03 0114 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: Jun 2nd, 2025 11:11:53 pm
Space Weather Message Code: ALTK06
- Serial Number: 642
- Issue Time: 2025 Jun 03 0311 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Jun 03 0259 UTC
- Synoptic Period: 0000-0300 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: Jun 2nd, 2025 11:32:40 pm
Space Weather Message Code: ALTK05
- Serial Number: 1799
- Issue Time: 2025 Jun 03 0332 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 03 0330 UTC
- Synoptic Period: 0300-0600 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: Jun 2nd, 2025 11:51:31 pm
Space Weather Message Code: ALTK06
- Serial Number: 643
- Issue Time: 2025 Jun 03 0351 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Jun 03 0346 UTC
- Synoptic Period: 0300-0600 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: Jun 2nd, 2025 8:05:54 pm
Space Weather Message Code: ALTK06
- Serial Number: 641
- Issue Time: 2025 Jun 03 0005 UTC
- ALERT: Geomagnetic K-index of 6
- Threshold Reached: 2025 Jun 02 2359 UTC
- Synoptic Period: 2100-0000 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: Jun 2nd, 2025 6:06:56 pm
Space Weather Message Code: ALTK05
- Serial Number: 1797
- Issue Time: 2025 Jun 02 2206 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2025 Jun 02 2205 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.
