Time: 916 PM Wed July 21, 2021 Forecaster: Justin Brooks

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1'S WILL BE ALLOWED TO EXPIRE AT 10:00 PM
-Message 1's issued for the entire District will be allowed to expire at 10:00pm as the threat for heavy rainfall has come to an end.
-Heavier than usual rainfall impacted areas in Douglas and Elbert County just S and SE of the District earlier this evening. A few lingering light rain showers persist to the south and along the higher terrain in the foothills at this time. These showers will continue to gradually decrease over the next couple of hours with dry conditions expected through the overnight and into Thursday.
-Overnight lows will drop into the 60's for the plains with upper 50's to around 60 for the foothills.
STORM RAINFALL POTENTIAL AND DURATION: light rain showers will produce a trace to 0.10" in 10-30 minutes.

WORST CASE SCENARIO: a moderate rain shower could produce 0.1-0.3" in 10-30 minutes.

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

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1159 PM WED
Trace (10%) to 0.1" (5%) to 0.3" (0%) ISSUED
Arapahoe Current TO 1159 PM WED
Trace (10%) to 0.1" (5%) to 0.3" (0%) ISSUED
Boulder Current TO 1159 PM WED
Trace (10%) to 0.1" (5%) to 0.3" (0%) ISSUED
Broomfield Current TO 1159 PM WED
Trace (10%) to 0.1" (5%) to 0.3" (0%) ISSUED
Denver Current TO 1159 PM WED
Trace (10%) to 0.1" (5%) to 0.3" (0%) ISSUED
Douglas Current TO 1159 PM WED
Trace (30%) to 0.1" (10%) to 0.3" (5%) ISSUED
Jefferson Current TO 1159 PM WED
Trace (30%) to 0.1" (10%) to 0.3" (5%) ISSUED
Foothills above 6500ft      
Boulder Current TO 1159 PM WED
Trace (30%) to 0.1" (10%) to 0.3" (5%) ISSUED
Douglas Current TO 1159 PM WED
Trace (30%) to 0.1" (10%) to 0.3" (5%) ISSUED
Jefferson Current TO 1159 PM WED
Trace (30%) to 0.1" (10%) to 0.3" (5%) ISSUED
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/