Time: 720 PM Wed July 20, 2022 Forecaster: Brad Simmons

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1'S WILL BE ALLOWED TO EXPIRE AT 8PM
-Message 1's will be allowed to expire at 8:00pm as the threat for heavy rainfall has ended for the day.
-An outflow boundary from storms that originated to the S of the Palmer Divide early in the afternoon moved northward and intensified thunderstorms over the District producing areas of moderate and brief heavy rainfall. The thunderstorm activity has diminished over the past hour and a more stable air mass is currently in place and thunderstorms are no longer expected.
-Isolated light rain showers will continue possible into the evening hours with dry conditions expected well ahead of midnight. Best chances for additional shower activity will be in and near the foothills.
STORM RAINFALL POTENTIAL AND DURATION: Isolated rain showers and possibly a weak thunderstorm will produce a trace to 0.2" of rain.

County Message Valid Times Prime Time
Boulder County 1 Current TO 800 PM 500 PM TO 700 PM
Jefferson County 1 Current TO 800 PM 500 PM TO 700 PM
Broomfield County 1 Current TO 800 PM 500 PM TO 700 PM
Douglas County 1 Current TO 800 PM 500 PM TO 700 PM
Adams County 1 Current TO 800 PM 500 PM TO 700 PM
Denver County 1 Current TO 800 PM 500 PM TO 700 PM
DIA 1 Current TO 800 PM 500 PM TO 700 PM
Arapahoe County 1 Current TO 800 PM 500 PM TO 700 PM
the City of Aurora 1 Current TO 800 PM 500 PM TO 700 PM
Arvada 1 Current TO 800 PM 500 PM TO 700 PM
Wheat Ridge 1 Current TO 800 PM 500 PM TO 700 PM
Lakewood 1 Current TO 800 PM 500 PM TO 700 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1000 PM WED
Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE
Arapahoe Current TO 1000 PM WED
Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE
Boulder Current TO 1000 PM WED
Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE
Broomfield Current TO 1000 PM WED
Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE
Denver Current TO 1000 PM WED
Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE
Douglas Current TO 1000 PM WED
Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE
Jefferson Current TO 1000 PM WED
Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE
Foothills above 6500ft      
Boulder Current TO 1000 PM WED
Trace (50%) to 0.1" (25%) to 0.2" (10%) NONE
Douglas Current TO 1000 PM WED
Trace (50%) to 0.1" (25%) to 0.2" (10%) NONE
Jefferson Current TO 1000 PM WED
Trace (50%) to 0.1" (25%) to 0.2" (10%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/