Space Weather Message Code: ALTEF3 Serial Number: 3556 Issue Time: 2025 Nov 05 1453 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2025 Nov 05 1445 UTC Station: GOES19 Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or update the personal information in your account, go to the Product ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 495 Issue Time: 2025 Nov 05 1109 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Nov 05 1106 UTC 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 in ...Continue Reading

Space Weather Message Code: SUMX01 Serial Number: 198 Issue Time: 2025 Nov 04 2221 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2025 Nov 04 2145 UTC Maximum Time: 2025 Nov 04 2201 UTC End Time: 2025 Nov 04 2211 UTC X-ray Class: X1.1 Optical Class: na Location: S13E72 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, strong ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 494 Issue Time: 2025 Nov 04 2200 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Nov 04 2157 UTC 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 in ...Continue Reading

Space Weather Message Code: SUMX01 Serial Number: 197 Issue Time: 2025 Nov 04 1755 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2025 Nov 04 1725 UTC Maximum Time: 2025 Nov 04 1734 UTC End Time: 2025 Nov 04 1751 UTC X-ray Class: X1.8 Location: N24E54 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-sola ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 493 Issue Time: 2025 Nov 04 1727 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Nov 04 1725 UTC 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 in ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3555 Issue Time: 2025 Nov 04 0551 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3554 Begin Time: 2025 Oct 31 1250 UTC Yesterday Maximum 2MeV Flux: 6364 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or updat ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 492 Issue Time: 2025 Nov 03 1014 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Nov 03 1013 UTC 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 in ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3554 Issue Time: 2025 Nov 03 0459 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3553 Begin Time: 2025 Oct 31 1250 UTC Yesterday Maximum 2MeV Flux: 12611 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or upda ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3553 Issue Time: 2025 Nov 02 0459 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3552 Begin Time: 2025 Oct 31 1250 UTC Yesterday Maximum 2MeV Flux: 10574 pfu Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.Thank you for using the Product Subscription Service. If you would like to remove a product subscription or upda ...Continue Reading