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: 0801 UTC Wed Mar 22, 2023
Valid: 12 UTC Mar 22, 2023 - 12 UTC Mar 23, 2023

Forecast Discussion

 
Excessive Rainfall Discussion
NWS Weather Prediction Center College Park MD
403 AM EDT Wed Mar 22 2023
 
Day 1
Valid 12Z Wed Mar 22 2023 - 12Z Thu Mar 23 2023 

...THERE IS A MARGINAL FOR EXCESSIVE RAINFALL ACROSS SOUTHERN 
CALIFORNIA AND CENTRAL ARIZONA...

Lingering rains from a departing AR will continue as the upper 
trough tracks from southern California into the Desert Southwest. 
New accumulations of 1 to 2 inches (mainly focused in/near the 
terrain) that fall on areas that are already hydrologically 
sensitive to additional precipitation will keep the potential for 
excessive rainfall going over portions of southern California and 
central Arizona.

Campbell

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


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