Space Weather Message Code: ALTEF3 Serial Number: 3443 Issue Time: 2025 Apr 01 1012 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3442 Begin Time: 2025 Mar 28 1410 UTC Yesterday Maximum 2MeV Flux: 2039 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: 478 Issue Time: 2025 Apr 01 0651 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Apr 01 0645 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: 3442 Issue Time: 2025 Mar 31 0502 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3441 Begin Time: 2025 Mar 28 1410 UTC Yesterday Maximum 2MeV Flux: 2772 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: ALTEF3 Serial Number: 3441 Issue Time: 2025 Mar 30 0501 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3440 Begin Time: 2025 Mar 28 1410 UTC Yesterday Maximum 2MeV Flux: 2968 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

AMSAT News ServiceANS-089March 30, 2025In this edition:[*]Fram2 Mission With Amateur Radio Payload Scheduled to Launch March 31st [*]GridMasterMap Satellite Top 100 Rovers April 2025 Rankings [*]Heathkit Now Offering AMSAT CubeSatSim Kits [*]Changes to AMSAT TLE Distribution for March 28, 2025 [*]ARISS News [*]Upcoming Satellite Operations [*]AMSAT Ambassador Activities [*]Satellite Shorts From All Over The AMSAT News Service bulletins are a free, weekly news and information service of AMSAT, The Radio Amateur Satel ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3440 Issue Time: 2025 Mar 29 0507 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3439 Begin Time: 2025 Mar 28 1410 UTC Yesterday Maximum 2MeV Flux: 2819 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: SUMX01 Serial Number: 191 Issue Time: 2025 Mar 28 1609 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2025 Mar 28 1503 UTC Maximum Time: 2025 Mar 28 1521 UTC End Time: 2025 Mar 28 1542 UTC X-ray Class: X1.1 Location: N06E75 NOAA Scale: R3 - Strong Comment: This summary is resent to correct the X-ray Class of this event to an X1.1 vs an X1.4. NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: ...Continue Reading

Space Weather Message Code: SUMX01 Serial Number: 190 Issue Time: 2025 Mar 28 1550 UTC SUMMARY: X-ray Event exceeded X1 Begin Time: 2025 Mar 28 1503 UTC Maximum Time: 2025 Mar 28 1521 UTC End Time: 2025 Mar 28 1542 UTC X-ray Class: X1.4 Location: N06E75 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: 477 Issue Time: 2025 Mar 28 1518 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 Mar 28 1507 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: 3439 Issue Time: 2025 Mar 28 1428 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2025 Mar 28 1410 UTC Station: GOES16 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