Space Weather Message Code: WARPC0
Serial Number: 89
Issue Time: 2021 Oct 29 2339 UTC

EXTENDED WARNING:
Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 88
Valid From: 2021 Oct 28 1635 UTC
Now Valid Until: 2021 Oct 30 1200 UTC
Warning Condition: Persistence

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.