Time: 907 AM Sat May 25, 2019 Forecaster: Brad Simmons

Heavy Precipitation Outlook
Flash Flood Prediction Program

SEASONAL TEMPERATURES WITH POSSIBLY AN ISOLATED THUNDERSTORM LATE
-SW flow aloft over the District today will result in temperatures warming to around season averages. Highs over the plains will reach the mid to possibly upper 70's. Normal high for Denver today is 75 degrees.
-A weak disturbance trapped in the SW flow aloft will move overhead late this afternoon and evening and could generate isolated high based thunderstorms between the hours of 4-11pm. Storms that manage to develop today will generally produce light rain and gusty winds. Most areas likely end up on the dry side.
-Tonight areas of low clouds may develop after midnight and persist into Sunday morning.
STORM RAINFALL POTENTIAL AND DURATION: Rain showers and weak thunderstorms will produce a trace to 0.10"

WORST CASE SCENARIO: A moderate thunderstorm could produce up to 0.3" of rainfall in 10-30 minutes.

A LOOK AHEAD: Temperatures will continue to warm on Sunday with some areas cracking the 80 degree mark over the plains. Much like today there will be a slight chance for isolated late afternoon and evening thunderstorms.

Location Prime Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams 400 PM TO 1100 PM
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Arapahoe 400 PM TO 1100 PM
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Boulder 400 PM TO 1100 PM
Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE
Broomfield 400 PM TO 1100 PM
Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE
Denver 400 PM TO 1100 PM
Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE
Douglas 400 PM TO 1100 PM
Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE
Jefferson 400 PM TO 1100 PM
Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE
Foothills above 6500ft      
Boulder 400 PM TO 1100 PM
Trace (40%) to 0.1" (20%) to 0.2" (5%) NONE
Douglas 400 PM TO 1100 PM
Trace (40%) to 0.1" (20%) to 0.2" (5%) NONE
Jefferson 400 PM TO 1100 PM
Trace (40%) to 0.1" (20%) to 0.2" (5%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.