Flash Flood Prediction Program

-	Hot today as temperatures reach the low to mid 90's across the District with low to mid 80's along the foothills. Another chance for afternoon and early evening rain showers/isolated thunderstorms, although the threat for heavy rain and severe thunderstorms has diminished, an isolated brief heavy rain cannot be completely ruled out today, favoring eastern portions of the District.
-	A weak upper-level disturbance will move through the region this afternoon and evening resulting in a good chance for rain showers/thunderstorms for the high country with a slight chance for rain showers/isolated thunderstorms to move out onto the plains. Dew points today will be in the low to mid 40's this afternoon, with highs in the low to mid 90's the biggest threat today will be gusty winds, lightning, small hail, and isolated pockets of heavy rain.
-	Best chance for rain showers/isolated thunderstorms will be from 1-8pm, with 1-2 rounds of storms possible. The best chance for moderate to heavy rainfall will be with the first wave of storms, with weaker development possible through sunset. Skies will begin to clear through the overnight and into Thursday with lows dropping into the low to mid 60's.

STORM RAINFALL POTENTIAL AND DURATION: Rain showers and weak thunderstorms will produce a trace to 0.2" of rain in 10-30 minutes. A moderate thunderstorm could produce 0.2-0.5" in 10-30 minutes. Supplemental QPF is available at https://qpf.udfcd.org

WORST CASE SCENARIO: A strong, slow moving thunderstorm formed off an outflow boundary has the potential produce up to 1.0" in 30-60 minutes.

A LOOK AHEAD: Similar conditions Thursday as high temperatures reach the low 90's once again along with a chance for afternoon and evening rain showers/isolated thunderstorms. The monsoon pattern takes hold Friday and will remain in place through the weekend bring a good chance for heavy rainfall Friday through Sunday.

Location	Prime Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	100 PM TO 800 PM	Trace (60%) to 0.2" (40%) to 0.5" (20%)	LOW
Arapahoe	100 PM TO 800 PM	Trace (60%) to 0.2" (40%) to 0.5" (20%)	LOW
Boulder	100 PM TO 800 PM	Trace (60%) to 0.2" (30%) to 0.5" (10%)	LOW
Broomfield	100 PM TO 800 PM	Trace (60%) to 0.2" (30%) to 0.5" (10%)	LOW
Denver	100 PM TO 800 PM	Trace (60%) to 0.2" (30%) to 0.5" (15%)	LOW
Douglas	100 PM TO 800 PM	Trace (60%) to 0.2" (40%) to 0.5" (20%)	LOW
Jefferson	100 PM TO 800 PM	Trace (60%) to 0.2" (30%) to 0.5" (10%)	LOW
Foothills above 6500ft
Boulder	100 PM TO 800 PM	Trace (60%) to 0.2" (30%) to 0.5" (10%)	LOW
Douglas	100 PM TO 800 PM	Trace (60%) to 0.2" (30%) to 0.5" (10%)	LOW
Jefferson	100 PM TO 800 PM	Trace (60%) to 0.2" (30%) to 0.5" (10%)	LOW

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.