Time: 855 PM Sun June 13, 2021 Forecaster: Justin Brooks

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1'S WILL BE ALLOWED TO EXPIRE AT 9:30 PM
-Message 1's issued for the entire District will expire at 9:30pm as the threat for heavy rainfall has come to an end.
-Strong to severe thunderstorms impacted portions of the District this afternoon and early evening bringing heavy rain, lots of lightning and large hail. Storms have moved onto the eastern plains at this time, although a few lingering rain showers and isolated thunderstorms persist at the eastern fringes of the District. Rain showers and isolated thunderstorm activity will continue to diminish as the evening progresses.
-Skies will start to clear through the overnight with temperatures dropping into the upper 50's to low 60's for the plains with low to mid 50's along the foothills into Monday morning.
STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers and isolated thunderstorms will produce a trace to 0.1" in 10-30 minutes. A stronger thunderstorm will be capable of producing 0.1-0.3" in 10-30 minutes.

WORST CASE SCENARIO: A slow moving, or stationary rain shower will have the potential to produce 0.3-0.5" in 30-60 minutes.

County Message Valid Times Prime Time
Arvada 1 Current TO 930 PM Current TO 930 PM
Wheat Ridge 1 Current TO 930 PM Current TO 930 PM
Lakewood 1 Current TO 930 PM Current TO 930 PM
the City of Aurora 1 Current TO 930 PM Current TO 930 PM
Arapahoe County 1 Current TO 930 PM Current TO 930 PM
DIA 1 Current TO 930 PM Current TO 930 PM
Denver County 1 Current TO 930 PM Current TO 930 PM
Adams County 1 Current TO 930 PM Current TO 930 PM
Douglas County 1 Current TO 930 PM Current TO 930 PM
Broomfield County 1 Current TO 930 PM Current TO 930 PM
Jefferson County 1 Current TO 930 PM Current TO 930 PM
Boulder County 1 Current TO 930 PM Current TO 930 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1159 PM SUN
Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE
Arapahoe Current TO 1159 PM SUN
Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE
Boulder Current TO 1159 PM SUN
Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE
Broomfield Current TO 1159 PM SUN
Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE
Denver Current TO 1159 PM SUN
Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE
Douglas Current TO 1159 PM SUN
Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE
Jefferson Current TO 1159 PM SUN
Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE
Foothills above 6500ft      
Boulder Current TO 1159 PM SUN
Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE
Douglas Current TO 1159 PM SUN
Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE
Jefferson Current TO 1159 PM SUN
Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/