WPC Day 1 Excessive Rainfall Outlook

WPC Day 1 Excessive Rainfall Outlook
Risk of 1 to 6 hour rainfall exceeding flash flood guidance at a point

Updated: 2324 UTC Fri Mar 20, 2026
Valid: 01 UTC Mar 21, 2026 - 12 UTC Mar 21, 2026

Forecast Discussion

Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
722 PM EDT Fri Mar 20 2026
Day 1
Valid 01Z Sat Mar 21 2026 - 12Z Sat Mar 21 2026

...THERE IS A MARGINAL RISK OF EXCESSIVE RAINFALL FOR PORTIONS OF
WESTERN WASHINGTON STATE...

The probability of rainfall exceeding flash flood guidance is less
than 5 percent.

Hurley


Day 1 threat area: www.wpc.ncep.noaa.gov/qpf/94epoints.txt


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