Time: 829 PM Sat August 20, 2022 Forecaster: Brad Simmons

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1'S WILL BE ALLOWED TO EXPIRE
-Message 1's will be allowed to expire at 9:30 PM as the threat for heavy rainfall has ended for the day.
-Rain shower activity has tapered off over the past couple hours but a few lingering light showers will continue possible into the evening. Best chances for additional showers will be through about 11:00 PM. After 11:00 PM generally dry conditions are expected for the remainder of the evening and overnight period.
-The threat for heavy rainfall from slow moving afternoon thunderstorms will continue on Sunday.
STORM RAINFALL POTENTIAL AND DURATION: Rain showers will produce a trace to 0.2" of rain in 30-60 minutes.

County Message Valid Times Prime Time
Boulder County 1 Current TO 930 PM 330 PM TO 830 PM
Jefferson County 1 Current TO 930 PM 330 PM TO 830 PM
Broomfield County 1 Current TO 930 PM 330 PM TO 830 PM
Douglas County 1 Current TO 930 PM 330 PM TO 830 PM
Adams County 1 Current TO 930 PM 330 PM TO 830 PM
Denver County 1 Current TO 930 PM 330 PM TO 830 PM
DIA 1 Current TO 930 PM 330 PM TO 830 PM
Arapahoe County 1 Current TO 930 PM 330 PM TO 830 PM
the City of Aurora 1 Current TO 930 PM 330 PM TO 830 PM
Arvada 1 Current TO 930 PM 330 PM TO 830 PM
Wheat Ridge 1 Current TO 930 PM 330 PM TO 830 PM
Lakewood 1 Current TO 930 PM 330 PM TO 830 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 60-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Arapahoe Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Boulder Current TO 1100 PM SAT
Trace (50%) to 0.1" (25%) to 0.2" (10%) NONE
Broomfield Current TO 1100 PM SAT
Trace (50%) to 0.1" (25%) to 0.2" (10%) NONE
Denver Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Douglas Current TO 1100 PM SAT
Trace (50%) to 0.1" (25%) to 0.2" (10%) NONE
Jefferson Current TO 1100 PM SAT
Trace (50%) to 0.1" (25%) to 0.2" (10%) NONE
Foothills above 6500ft      
Boulder Current TO 1100 PM SAT
Trace (75%) to 0.1" (50%) to 0.2" (15%) NONE
Douglas Current TO 1100 PM SAT
Trace (75%) to 0.1" (50%) to 0.2" (15%) NONE
Jefferson Current TO 1100 PM SAT
Trace (75%) to 0.1" (50%) to 0.2" (15%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/