Time: 835 AM Wed June 3, 2020 Forecaster: Justin Brooks

Heavy Precipitation Outlook
Flash Flood Prediction Program

WARM TODAY WITH A CHANCE OF AN ISOLATED HIGH BASED SHOWER/THUNDERSTORM
-Similar conditions as yesterday as high temperatures reach the upper 80's to low 90's across the District today with a slight chance for isolated high-based rain showers/isolated thunderstorms this afternoon and evening.
-High-based thunderstorms will first become possible over the foothills and Palmer Divide between 12-2pm. After 2pm thunderstorms will become more likely over the plains with best chances for thunderstorm activity through 9 or 10pm this evening.
-Surface moisture will be relatively dry through the early afternoon with dew points in the upper 30's to low 40's. With upper 80's to low 90's this will result high-based thunderstorms with gusty winds likely along with light to isolated moderate pockets of brief rain showers. Storm motions will be relatively fast from W to E between 10-20mph, which will limit point rainfall amounts across the District.
STORM RAINFALL POTENTIAL AND DURATION: Weak thunderstorms will produce a trace to 0.1" in 10-30 minutes. Moderate to strong thunderstorms will have the potential to produce 0.1-0.3" in 10-30 minutes

WORST CASE SCENARIO: A large strong thunderstorm or a slower moving strong thunderstorm will have the potential to produce 0.3-0.6" in 10-30 minutes and up to 1.0" in 60 minutes or less.

A LOOK AHEAD: Temperatures will remain well above average over the next few days with the potential for afternoon and evening rain showers/isolated thunderstorms into the weekend. Best chance for heavy rain appears to be Saturday at this time, with conditions finally drying out completely over the region Sunday.

Location Prime Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams 200 PM TO 900 PM
Trace (40%) to 0.1" (20%) to 0.6" (5%) NONE
Arapahoe 200 PM TO 900 PM
Trace (40%) to 0.1" (20%) to 0.6" (5%) NONE
Boulder 200 PM TO 900 PM
Trace (40%) to 0.1" (20%) to 0.6" (5%) NONE
Broomfield 200 PM TO 900 PM
Trace (40%) to 0.1" (20%) to 0.6" (5%) NONE
Denver 200 PM TO 900 PM
Trace (40%) to 0.1" (20%) to 0.6" (5%) NONE
Douglas 200 PM TO 900 PM
Trace (40%) to 0.1" (20%) to 0.6" (5%) NONE
Jefferson 200 PM TO 900 PM
Trace (40%) to 0.1" (20%) to 0.6" (5%) NONE
Foothills above 6500ft      
Boulder 200 PM TO 900 PM
Trace (40%) to 0.1" (20%) to 0.6" (5%) NONE
Douglas 200 PM TO 900 PM
Trace (40%) to 0.1" (20%) to 0.6" (5%) NONE
Jefferson 200 PM TO 900 PM
Trace (40%) to 0.1" (20%) to 0.6" (5%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.