Time: 825 PM Thu May 25, 2023 Forecaster: Brad Simmons

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1'S WILL BE ALLOWED TO EXPIRE AT 9:30 PM
Message 1’s will be allowed to expire as the threat for heavy rainfall has ended for the day.

Thunderstorm activity has moved east of the District and with cooling temperatures no additional thunderstorms are expected this evening. Generally dry conditions will persist into Friday morning for many areas but an isolated rain shower cannot be completely ruled out over the next few hours with completely dry conditions ahead of midnight. Any additional shower activity will favor the foothills.

Surface moisture will remain in place tomorrow and another round of afternoon thunderstorms are expected with stronger storms capable of producing brief heavy rainfall and large hail.
STORM RAINFALL POTENTIAL AND DURATION: Most areas will trend on the dry side with isolated rain showers producing a trace to 0.1” of rain.

County Message Valid Times Prime Time
Boulder County 1 230 PM TO 930 PM 330 PM TO 830 PM
Jefferson County 1 230 PM TO 930 PM 330 PM TO 830 PM
Broomfield County 1 230 PM TO 930 PM 330 PM TO 830 PM
Douglas County 1 230 PM TO 930 PM 330 PM TO 830 PM
Adams County 1 230 PM TO 930 PM 330 PM TO 830 PM
Denver County 1 230 PM TO 930 PM 330 PM TO 830 PM
DIA 1 230 PM TO 930 PM 330 PM TO 830 PM
Arapahoe County 1 230 PM TO 930 PM 330 PM TO 830 PM
the City of Aurora 1 230 PM TO 930 PM 330 PM TO 830 PM
Arvada 1 230 PM TO 930 PM 330 PM TO 830 PM
Wheat Ridge 1 230 PM TO 930 PM 330 PM TO 830 PM
Lakewood 1 230 PM TO 930 PM 330 PM TO 830 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1100 PM THU
Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED
Arapahoe Current TO 1100 PM THU
Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED
Boulder Current TO 1100 PM THU
Trace (20%) to 0.05" (10%) to 0.1" (5%) ISSUED
Broomfield Current TO 1100 PM THU
Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED
Denver Current TO 1100 PM THU
Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED
Douglas Current TO 1100 PM THU
Trace (20%) to 0.05" (10%) to 0.1" (5%) ISSUED
Jefferson Current TO 1100 PM THU
Trace (20%) to 0.05" (10%) to 0.1" (5%) ISSUED
Foothills above 6500ft      
Boulder Current TO 1100 PM THU
Trace (30%) to 0.05" (15%) to 0.1" (5%) ISSUED
Douglas Current TO 1100 PM THU
Trace (30%) to 0.05" (15%) to 0.1" (5%) ISSUED
Jefferson Current TO 1100 PM THU
Trace (30%) to 0.05" (15%) to 0.1" (5%) ISSUED
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/