Time: 656 PM Fri August 19, 2022 Forecaster: Justin Brooks

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1'S CONTINUE VALID
-Message 1's issued for the entire District will continue valid until 10:00 PM
-A line of storms has developed, first initiating in Adams County before strengthening southward into Aurora and Arapahoe Counties. These storms briefly produced heavy rain and are now moving eastward and out of the District.
-Outflow boundaries have resulted in additional storm development towards DIA and will have the potential to produce more storms across the District through the few hours.
STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers/thunderstorms will produce a trace to 0.2" in 10-30 minutes. A moderate to stronger rain shower/thunderstorm could produce 0.2-0.6" in 10-30 minutes.

WORST CASE SCENARIO: An anchored, strong thunderstorm has the potential to produce 0.6-1.2" in 45-60 minutes.

County Message Valid Times Prime Time
Boulder County 1 Current TO 1000 PM Current TO 900 PM
Jefferson County 1 Current TO 1000 PM Current TO 900 PM
Broomfield County 1 Current TO 1000 PM Current TO 900 PM
Douglas County 1 Current TO 1000 PM Current TO 900 PM
Adams County 1 Current TO 1000 PM Current TO 900 PM
Denver County 1 Current TO 1000 PM Current TO 900 PM
DIA 1 Current TO 1000 PM Current TO 900 PM
Arapahoe County 1 Current TO 1000 PM Current TO 900 PM
the City of Aurora 1 Current TO 1000 PM Current TO 900 PM
Arvada 1 Current TO 1000 PM Current TO 900 PM
Wheat Ridge 1 Current TO 1000 PM Current TO 900 PM
Lakewood 1 Current TO 1000 PM Current TO 900 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1000 PM FRI
Trace (50%) to 0.2" (25%) to 0.6" (10%) ISSUED
Arapahoe Current TO 1000 PM FRI
Trace (50%) to 0.2" (25%) to 0.6" (10%) ISSUED
Boulder Current TO 1000 PM FRI
Trace (30%) to 0.2" (10%) to 0.6" (5%) ISSUED
Broomfield Current TO 1000 PM FRI
Trace (40%) to 0.2" (20%) to 0.6" (5%) ISSUED
Denver Current TO 1000 PM FRI
Trace (50%) to 0.2" (25%) to 0.6" (10%) ISSUED
Douglas Current TO 1000 PM FRI
Trace (50%) to 0.2" (25%) to 0.6" (10%) ISSUED
Jefferson Current TO 1000 PM FRI
Trace (30%) to 0.2" (10%) to 0.6" (5%) ISSUED
Foothills above 6500ft      
Boulder Current TO 1000 PM FRI
Trace (30%) to 0.2" (10%) to 0.6" (5%) ISSUED
Douglas Current TO 1000 PM FRI
Trace (40%) to 0.2" (20%) to 0.6" (10%) ISSUED
Jefferson Current TO 1000 PM FRI
Trace (30%) to 0.2" (10%) to 0.6" (5%) ISSUED
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/