Time: 858 AM Fri May 22, 2020 Forecaster: Brad Simmons

Heavy Precipitation Outlook
Flash Flood Prediction Program

WARM AND GENERALLY DRY WITH A FEW ISOLATED HIGH-BASED AFTERNOON SHOWERS/THUNDERSTORMS
-Temperatures will warm into the upper 70's to lower 80's over the plains under sunny to mostly sunny skies through mid to late afternoon. Normal high for Denver today is 74 degrees.
-There will be a build up of clouds mid to late afternoon and an isolated rain shower/sprinkle or a high-based weak thunderstorm cannot be ruled out. Many areas will likely end up on the dry side with no meaningful rainfall expected. The most likely outcome is gusty winds near high based showers/thunderstorms due to evaporation of precipitation from cloud base to the surface.
-After 10pm conditions expected to be completely dry for the remainder of the overnight period.
STORM RAINFALL POTENTIAL AND DURATION: Rain showers or a high-based thunderstorm will produce a trace to 0.10".

A LOOK AHEAD: Saturday is looking dry during the day with temperatures similar to today. A cold front will move through Saturday night and may generate widely scattered rain showers and weak thunderstorms into Sunday morning. A low pressure system will move through on Sunday with widespread to numerous rain showers and thunderstorms expected along with much cooler temperatures.

Location Prime Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams 500 PM TO 1000 PM
Trace (20%) to 0.1" (10%) NONE
Arapahoe 500 PM TO 1000 PM
Trace (20%) to 0.1" (10%) NONE
Boulder 500 PM TO 1000 PM
Trace (40%) to 0.1" (10%) NONE
Broomfield 500 PM TO 1000 PM
Trace (20%) to 0.1" (10%) NONE
Denver 500 PM TO 1000 PM
Trace (20%) to 0.1" (10%) NONE
Douglas 500 PM TO 1000 PM
Trace (40%) to 0.1" (10%) NONE
Jefferson 500 PM TO 1000 PM
Trace (40%) to 0.1" (10%) NONE
Foothills above 6500ft      
Boulder 400 PM TO 900 PM
Trace (50%) to 0.1" (15%) NONE
Douglas 400 PM TO 900 PM
Trace (50%) to 0.1" (15%) NONE
Jefferson 400 PM TO 900 PM
Trace (50%) to 0.1" (15%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.