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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 5th, 2026 2:09:38 pm
Space Weather Message Code: SUMXM5
- Serial Number: 324
- Issue Time: 2026 Jul 05 1809 UTC
- SUMMARY: X-ray Event exceeded M5
- Begin Time: 2026 Jul 05 1751 UTC
- Maximum Time: 2026 Jul 05 1757 UTC
- End Time: 2026 Jul 05 1802 UTC
- Xray Class: M5.5
- Optical Class:
- Location: N15W87
- Noaa Scale: R2 - Moderate
- Comment:
- NOAA Scale: R2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
- Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
Geophysical Alert Message Issued: Jul 5th, 2026 2:00:26 pm
Space Weather Message Code: ALTXMF
- Serial Number: 539
- Issue Time: 2026 Jul 05 1800 UTC
- ALERT: X-Ray Flux exceeded M5
- Threshold Reached: 2026 Jul 05 1758 UTC
- Noaa Scale: R2 - Moderate
- Comment:
- NOAA Scale: R2 - Moderate
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
Geophysical Alert Message Issued: Jul 5th, 2026 2:02:15 pm
Space Weather Message Code: ALTK04
- Serial Number: 2671
- Issue Time: 2026 Jul 05 1802 UTC
- ALERT: Geomagnetic K-index of 4
- Threshold Reached: 2026 Jul 05 1759 UTC
- Synoptic Period: 1500-1800
- Active Warning: YES
- Comment:
- 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 5th, 2026 12:59:36 pm
Space Weather Message Code: WARK04
- Serial Number: 5379
- Issue Time: 2026 Jul 05 1659 UTC
- WARNING: Geomagnetic K-index of 4 expected
- Valid From: 2026 Jul 05 1658 UTC
- Valid To: 2026 Jul 06 0300 UTC
- Warning Conditions: Onset
- Comment:
- 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 4th, 2026 8:27:14 pm
Space Weather Message Code: WARK07
- Serial Number: 152
- Issue Time: 2026 Jul 05 0027 UTC
- CANCEL WARNING: Geomagnetic K-index of 7 or greater expected
- Cancel Serial Number: 151
- Original Issue Time: 2026 Jul 04 0501 UTC
- Wrong date in the original end time. Warning was supposed to expire at 04/1200z.
- Wrong date in the original end time. Warning was supposed to expire at 04/1200z. NOAA Scale: G3 - Greater
Geophysical Alert Message Issued: Jul 4th, 2026 10:56:06 pm
Space Weather Message Code: WARK04
- Serial Number: 5378
- Issue Time: 2026 Jul 05 0256 UTC
- EXTENDED WARNING: Geomagnetic K-index of 4 expected
- Extension to Serial Number: 5377
- Valid From: 2026 Jul 03 1209 UTC
- Now Valid Until: 2026 Jul 05 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: Jul 4th, 2026 8:05:42 pm
Space Weather Message Code: WARK06
- Serial Number: 666
- Issue Time: 2026 Jul 05 0005 UTC
- CANCEL WARNING: Geomagnetic K-index of 6 expected
- Cancel Serial Number: 665
- Original Issue Time: 2026 Jul 04 1357 UTC
- Wrong date in the original end time. Warning was supposed to expire at 04/2100z.
- Wrong date in the original end time. Warning was supposed to expire at 04/2100z.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: Jul 4th, 2026 7:00:54 pm
Space Weather Message Code: ALTK05
- Serial Number: 2038
- Issue Time: 2026 Jul 04 2300 UTC
- ALERT: Geomagnetic K-index of 5
- Threshold Reached: 2026 Jul 04 2301 UTC
- Synoptic Period: 2100-2400
- Active Warning: YES
- Noaa Scale: G1 - Minor
- Comment:
- 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 4th, 2026 5:15:03 pm
Space Weather Message Code: SUM10R
- Serial Number: 922
- Issue Time: 2026 Jul 04 2115 UTC
- SUMMARY: 10cm Radio Burst
- Begin Time: 2026 Jul 04 2040 UTC
- Maximum Time: 2026 Jul 04 2041 UTC
- End Time: 2026 Jul 04 2047 UTC
- Peak Flux: 890 sfu
- Duration: 7 minutes
- Latest Penticton Noon Flux: 161 sfu
- Comment:
Geophysical Alert Message Issued: Jul 4th, 2026 5:16:21 pm
Space Weather Message Code: SUMX01
- Serial Number: 220
- Issue Time: 2026 Jul 04 2116 UTC
- SUMMARY: X-ray Event exceeded X1
- Begin Time: 2026 Jul 04 2029 UTC
- Maximum Time: 2026 Jul 04 2041 UTC
- End Time: 2026 Jul 04 2047 UTC
- Xray Class: X1.3
- Optical Class:
- Location: N15W75
- Noaa Scale: R3 - Strong
- Comment:
- NOAA Scale: R3 - Strong
- NOAA Space Weather Scale descriptions can be found at
- www.swpc.noaa.gov/noaa-scales-explanation
- Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
- Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
