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Post-Tropical Cyclone Hilary Discussion Number  21
NWS Weather Prediction Center College Park MD   EP092023
800 AM PDT Mon Aug 21 2023
 
KEY MESSAGES:
 
1. Across the Southwestern United States, the ongoing and historic
amount of rainfall is expected to cause life-threatening flash, 
urban, and arroyo flooding including landslides, mudslides, and 
debris flows today. Localized flooding impacts, some significant, 
are also expected across northern portions of the Intermountain 
West into Tuesday morning.
 
2. Strong and gusty winds are expected to persist across portions
of the western United States today, particularly in and near high 
terrain, passes, canyons, and summits.
 
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  21/1500Z 41.6N 117.7W   30 KT  35 MPH...POST-TROPICAL
 12H  22/0000Z...DISSIPATED
 
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Forecaster Lamers
 
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