Space Weather Message Code: ALTEF3 Serial Number: 3474 Issue Time: 2025 Jun 01 0526 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3473 Begin Time: 2025 May 30 0155 UTC Yesterday Maximum 2MeV Flux: 9162 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 SERVICE* *ANS-152* In this edition: * Welcome SO-125! AMSAT-EA’s HADES-ICM Joins the OSCAR Fleet * Your Voice, Your Board: Nominate Now for 2025 AMSAT Election * Another Batch of CubeSatSim Kits Available Soon in AMSAT Store * SpaceX Starship Ninth Flight Yields Data, Misses Reentry Goals * Japanese Private Lander Resilience Nears Lunar Touchdown * GridMasterMap Satellite Top 100 Rovers June 2025 Rankings * Changes to AMSAT-NA TLE Distribution for May 30, 2025 * ARISS News * AMSAT Ambassad ...Continue Reading

Space Weather Message Code: WATA99 Serial Number: 10 Issue Time: 2025 May 31 1957 UTC WATCH: Geomagnetic Storm Category G4 or Greater Predicted Highest Storm Level Predicted by Day: Jun 01: G4 (Severe) Jun 02: G4 (Severe) Jun 03: G2 (Moderate) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced ...Continue Reading

Space Weather Message Code: WATA99 Serial Number: 9 Issue Time: 2025 May 31 1504 UTC WATCH: Geomagnetic Storm Category G4 or Greater Predicted Highest Storm Level Predicted by Day: Jun 01: G3 (Strong) Jun 02: G4 (Severe) Jun 03: G2 (Moderate) THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-explanation Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude. Induced C ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3473 Issue Time: 2025 May 31 0634 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3472 Begin Time: 2025 May 30 0155 UTC Yesterday Maximum 2MeV Flux: 4876 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: 485 Issue Time: 2025 May 30 2359 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 May 30 2359 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: 3472 Issue Time: 2025 May 30 1152 UTC CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Continuation of Serial Number: 3471 Begin Time: 2025 May 30 0155 UTC Yesterday Maximum 2MeV Flux: 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 update th ...Continue Reading

Space Weather Message Code: ALTEF3 Serial Number: 3471 Issue Time: 2025 May 30 0212 UTC ALERT: Electron 2MeV Integral Flux exceeded 1000pfu Threshold Reached: 2025 May 30 0155 UTC Station: GOES-19 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

SB KEPS @ AMSAT $ORB25150.1 2Line Orbital Elements 25150.AMSAT QST de W1STR AMSAT Orbital Elements for Amateur Satellites in TLE Format From Orbital Analysis Office New England Sci-Tech STEM Education Center Natick, MA May 30, 2025 To all radio amateurs These element sets describe the orbits of various satellites in use by the amateur radio community. For details see: www.amsat.org/keplerian-elements-formats/ A daily update of element sets is available at: www.amsat.org/tle/daily-bulletin.txt or without ...Continue Reading

Space Weather Message Code: ALTXMF Serial Number: 484 Issue Time: 2025 May 25 1631 UTC ALERT: X-Ray Flux exceeded M5 Threshold Reached: 2025 May 25 1630 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