Space Environment Warning
Issued by NWS

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WOXX32 KWNP 132215

Space Weather Message Code: WARPX1
Serial Number: 473
Issue Time: 2017 Sep 13 2211 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 472
Valid From: 2017 Sep 10 1630 UTC
Now Valid Until: 2017 Sep 14 2359 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
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