Time: 1001 AM Mon May 13, 2019 Forecaster: Justin Brooks

Heavy Precipitation Outlook
Flash Flood Prediction Program

WARM TODAY WITH A CHANCE OF AN ISOLATED HIGH BASED SHOWER/THUNDERSTORM
-High-pressure has moved over the region today resulting in sunny skies with warm conditions as high temperatures reach the upper 70's to 80 degrees. A small disturbance from the northwest will move in this afternoon which will bring a chance for isolated "high based" rain showers and possibly a weak thunderstorm.
-Showers and weak thunderstorms that manage to develop will produce minimal rain, most likely light showers and gusty winds. Storms will move from NW to SE at 15-20mph. Best chances for showers will be between 2-8pm favoring areas north and east of the District.
-Dry conditions can be expected through the overnight period.
STORM RAINFALL POTENTIAL AND DURATION: Isolated rain showers or a weak thunderstorm will produce a trace to 0.1" in 10-30min.

WORST CASE SCENARIO: An isolated moderate thunderstorm or training of weak thunderstorms will produce 0.1-0.5" in 60-90min.

A LOOK AHEAD: High-pressure will dominate over the region this week, bringing even warmer temperatures around 80 Tuesday, with a slight chance for a brief rain shower/isolated thunderstorm in the afternoon with minimal if any precipitation reaching the ground. Warm, dry conditions expected through the rest of the week with the next chance for rain/thunderstorms Friday.

Location Prime Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams 200 PM TO 800 PM
Trace (50%) to 0.1" (15%) to 0.2" (5%) NONE
Arapahoe 200 PM TO 800 PM
Trace (50%) to 0.1" (15%) to 0.2" (5%) NONE
Boulder 200 PM TO 800 PM
Trace (50%) to 0.1" (15%) to 0.2" (5%) NONE
Broomfield 200 PM TO 800 PM
Trace (50%) to 0.1" (15%) to 0.2" (5%) NONE
Denver 200 PM TO 800 PM
Trace (50%) to 0.1" (15%) to 0.2" (5%) NONE
Douglas 200 PM TO 800 PM
Trace (40%) to 0.1" (10%) to 0.2" (5%) NONE
Jefferson 200 PM TO 800 PM
Trace (40%) to 0.1" (10%) to 0.2" (5%) NONE
Foothills above 6500ft      
Boulder 200 PM TO 800 PM
Trace (50%) to 0.1" (15%) to 0.2" (5%) NONE
Douglas 200 PM TO 800 PM
Trace (40%) to 0.1" (10%) to 0.2" (5%) NONE
Jefferson 200 PM TO 800 PM
Trace (40%) to 0.1" (10%) to 0.2" (5%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.