Time: 138 PM Tue August 16, 2022 Forecaster: Brad Simmons

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1'S CONTINUE VALID
-Message 1's will continue valid until 6:00pm this evening.
-The area of moderate to heavy rainfall has diminished over the District with lingering light rain showers currently ongoing. The atmosphere is more stable behind these showers but any daytime heating will result in additional showers and possibly an isolated thunderstorm this afternoon.
-Rain showers will be capable of moderate to brief heavy rain with any thunderstorm activity very capable of producing heavy rainfall. With the cooler temperatures currently in place (60's to around 70 over the plains) the threat for thunderstorm activity is low.
STORM RAINFALL POTENTIAL AND DURATION: Rain showers will produce 0.3-0.8" rainfall rates in 10-30 minutes. Weak thunderstorms will have the potential to produce 0.4-1.2" in 10-30 minutes.

WORST CASE SCENARIO: Temperatures warm further than expected with the potential for moderate to strong thunderstorms to produce heavy rainfall of 0.8-2.0" in 10-30 minutes.

County Message Valid Times Prime Time
Boulder County 1 Current TO 600 PM Current TO 500 PM
Jefferson County 1 Current TO 600 PM Current TO 500 PM
Broomfield County 1 Current TO 600 PM Current TO 500 PM
Douglas County 1 Current TO 600 PM Current TO 500 PM
Adams County 1 Current TO 600 PM Current TO 500 PM
Denver County 1 Current TO 600 PM Current TO 500 PM
DIA 1 Current TO 600 PM Current TO 500 PM
Arapahoe County 1 Current TO 600 PM Current TO 500 PM
the City of Aurora 1 Current TO 600 PM Current TO 500 PM
Arvada 1 Current TO 600 PM Current TO 500 PM
Wheat Ridge 1 Current TO 600 PM Current TO 500 PM
Lakewood 1 Current TO 600 PM Current TO 500 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 600 PM TUE
0.1" (75%) to 0.3" (50%) to 0.8" (25%) ISSUED
Arapahoe Current TO 600 PM TUE
0.1" (75%) to 0.3" (50%) to 0.8" (25%) ISSUED
Boulder Current TO 600 PM TUE
0.1" (75%) to 0.3" (50%) to 0.8" (25%) ISSUED
Broomfield Current TO 600 PM TUE
0.1" (75%) to 0.3" (50%) to 0.8" (25%) ISSUED
Denver Current TO 600 PM TUE
0.1" (75%) to 0.3" (50%) to 0.8" (25%) ISSUED
Douglas Current TO 600 PM TUE
0.1" (75%) to 0.3" (50%) to 0.8" (25%) ISSUED
Jefferson Current TO 600 PM TUE
0.1" (75%) to 0.3" (50%) to 0.8" (25%) ISSUED
Foothills above 6500ft      
Boulder Current TO 600 PM TUE
0.1" (90%) to 0.3" (60%) to 0.8" (25%) ISSUED
Douglas Current TO 600 PM TUE
0.1" (90%) to 0.3" (60%) to 0.8" (25%) ISSUED
Jefferson Current TO 600 PM TUE
0.1" (90%) to 0.3" (60%) to 0.8" (25%) ISSUED
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/