Time: 747 AM Tue August 11, 2020 Forecaster: Justin Brooks

Heavy Precipitation Outlook
Flash Flood Prediction Program

HOT AND GENERALLY DRY WITH A VERY SLIGHT CHANCE FOR AN AFTERNOON HIGH-BASED ISOLATED RAIN SHOWER/THUNDERSTORM
-Westerly upper-level flow will continue to dominate over the region today leading to high temperatures in the low to upper 90's across the plains with low to upper 80's along the foothills.
-A few scattered high-based rain showers/thunderstorms cannot be completely ruled out this afternoon, although any precipitation will struggle to reach the ground today. Best chance to see any storm development will be from 1-6pm with skies clearing out by sunset.
-Overnight lows will drop into the low to mid 60's across the plains with mid to upper 50's along the foothills.
STORM RAINFALL POTENTIAL AND DURATION: High-based Rain showers and/or a weak thunderstorms will produce a trace to 0.1". An isolated moderate thunderstorms will have the potential to produce 0.1-0.3" in 10-30 mintues. Supplemental QPF is available at https://qpf.udfcd.org

A LOOK AHEAD: Dry conditions will prevail over the next couple of days as drier air moves in from the west. Temperatures will continue to be in the 90's through the rest of the week. A slight increase in moisture Friday will bring a low chance for afternoon rain showers and thunderstorms. A better chance for rain and isolated thunderstorms Saturday and Sunday.

Location Prime Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams 100 PM TO 600 PM
Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE
Arapahoe 100 PM TO 600 PM
Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE
Boulder 100 PM TO 600 PM
Trace (30%) to 0.1" (10%) to 0.3" (5%) NONE
Broomfield 100 PM TO 600 PM
Trace (30%) to 0.1" (10%) to 0.3" (5%) NONE
Denver 100 PM TO 600 PM
Trace (30%) to 0.1" (10%) to 0.3" (5%) NONE
Douglas 100 PM TO 600 PM
Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE
Jefferson 100 PM TO 600 PM
Trace (30%) to 0.1" (10%) to 0.3" (5%) NONE
Foothills above 6500ft      
Boulder 100 PM TO 600 PM
Trace (20%) to 0.1" (10%) to 0.3" (0%) NONE
Douglas 100 PM TO 600 PM
Trace (20%) to 0.1" (10%) to 0.3" (0%) NONE
Jefferson 100 PM TO 600 PM
Trace (20%) to 0.1" (10%) to 0.3" (0%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.