2.7.1 spase://NOAA/Catalog/GOES/SPEs Solar Proton Events Affecting the Earth Environment 2026-03-24T18:01:00 NOAA Space Weather Prediction Center (SWPC) Solar Proton Events (SPEs), or solar radiation storms, involve high-energy protons (\(>10\text{ MeV}\)) accelerating from the Sun, causing significant disruption to satellite electronics, GPS, HF radio communication, and astronaut safety. These events occur when protons follow magnetic field lines to Earth, lasting hours to days and affecting polar regions most. spase://SMWG/Person/Robert.Steenburgh Developer spase://SMWG/Person/Olga.Y.Uritskaya MetadataContact spase://SMWG/Repository/NOAA/NGDC https://www.ngdc.noaa.gov/stp/space-weather/interplanetary-data/solar-proton-events/SEP%20page%20code.html HTML spase://SMWG/Instrument/GOES/1/EPM EnergeticSolarParticleEvent 1976-04-30T21:20:00 P3M Begin Time Yr M/D (UTC) Temporal Maximum Time Yr M/D (UTC) Temporal >10 MeV Maximum (pfu) Other Region Positional Location Positional Flare Maximum (UTC) Other Type II Radio Emission Other Type IV Remark Linear Speed Velocity Imagery/Misc WebResource