Time: 853 AM Mon May 25, 2020 Forecaster: Justin Brooks

Heavy Precipitation Outlook
Flash Flood Prediction Program

COOLER TODAY WITH A CHANCE FOR RAIN/ISOLATED THUNDERSTORM THIS AFTERNOON
-NW Flow aloft today as a low-pressure trough moves out of the region leading to cooler temperatures with a slight chance for afternoon rain/isolated thunderstorms.
-High temperatures will reach the mid 60's today with mostly sunny skies this morning. Clouds will start to fill in this afternoon bringing a slight chance for rain showers/isolated thunderstorms. Best chance for rain today will be between 2-8pm with skies clearing into the evening.
-Overnight lows will drop into the mid 40's. Warmer tomorrow as high temperatures return to the mid to upper 70's with dry conditions expected.
STORM RAINFALL POTENTIAL AND DURATION: Rain showers or weak thunderstorm will produce a trace to 0.10" of precipitation in 10-30 minutes. A moderate or slow moving thunderstorm will produce 0.10-0.20" of rain in 10-30 minutes.

WORST CASE SCENARIO: Training of thunderstorm cells could produce 0.20-0.50" of rain in 30-60 minutes.

A LOOK AHEAD: high-pressure builds back in over the next few days resulting in warmer high temperatures and dry conditions.

Location Prime Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams 200 PM TO 800 PM
Trace (50%) to 0.1" (20%) to 0.2" (5%) NONE
Arapahoe 200 PM TO 800 PM
Trace (50%) to 0.1" (20%) to 0.2" (5%) NONE
Boulder 200 PM TO 800 PM
Trace (50%) to 0.1" (20%) to 0.2" (5%) NONE
Broomfield 200 PM TO 800 PM
Trace (50%) to 0.1" (20%) to 0.2" (5%) NONE
Denver 200 PM TO 800 PM
Trace (50%) to 0.1" (20%) to 0.2" (5%) NONE
Douglas 200 PM TO 800 PM
Trace (50%) to 0.1" (20%) to 0.2" (5%) NONE
Jefferson 200 PM TO 800 PM
Trace (50%) to 0.1" (20%) to 0.2" (5%) NONE
Foothills above 6500ft      
Boulder 200 PM TO 800 PM
Trace (50%) to 0.1" (20%) to 0.2" (5%) NONE
Douglas 200 PM TO 800 PM
Trace (50%) to 0.1" (20%) to 0.2" (5%) NONE
Jefferson 200 PM TO 800 PM
Trace (50%) to 0.1" (20%) to 0.2" (5%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.