Flash Flood Prediction Program

-	Message 1's will continue valid through 9:00 PM although the greatest threat for heavy rainfall is now on the decrease.
-	A couple rounds of showers and thunderstorms have moved through the District today producing generally light to brief moderate rainfall as well as some small hail. Although the greatest threat for heavy rainfall is on the decrease a rogue strong thunderstorm remains possible into the evening. The most likely outcome is widely scattered rain showers into the evening and overnight.
-	Storm motions from WSW to ENE at around 20mph will result in relatively fast moving rain showers and isolated thunderstorms helping to reduce point rainfall amounts most likely keeping the heavy rainfall threat at bay.

STORM RAINFALL POTENTIAL AND DURATION: Rain showers will produce a trace to 0.1" in 10-30 minutes. Thunderstorms will still be capable of producing rainfall of 0.3-0.7" in 10-30 minutes.

WORST CASE SCENARIO: A strong/severe thunderstorm produces heavy rainfall of up to 1.2" in 45-75 minutes or less.

County	Message	Valid Times	Prime Time
Boulder County	1	Current TO 900 PM	Current TO 700 PM
Jefferson County	1	Current TO 900 PM	Current TO 700 PM
Broomfield County	1	Current TO 900 PM	Current TO 700 PM
Douglas County	1	Current TO 900 PM	Current TO 700 PM
Adams County	1	Current TO 900 PM	Current TO 700 PM
Denver County	1	Current TO 900 PM	Current TO 700 PM
DIA	1	Current TO 900 PM	Current TO 700 PM
Arapahoe County	1	Current TO 900 PM	Current TO 700 PM
the City of Aurora	1	Current TO 900 PM	Current TO 700 PM
Arvada	1	Current TO 900 PM	Current TO 700 PM
Wheat Ridge	1	Current TO 900 PM	Current TO 700 PM
Lakewood	1	Current TO 900 PM	Current TO 700 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 900 PM TUE	Trace (80%) to 0.2" (40%) to 0.7" (10%)	ISSUED
Arapahoe	Current TO 900 PM TUE	Trace (80%) to 0.2" (40%) to 0.7" (10%)	ISSUED
Boulder	Current TO 900 PM TUE	Trace (80%) to 0.2" (40%) to 0.7" (10%)	ISSUED
Broomfield	Current TO 900 PM TUE	Trace (80%) to 0.2" (40%) to 0.7" (10%)	ISSUED
Denver	Current TO 900 PM TUE	Trace (80%) to 0.2" (40%) to 0.7" (10%)	ISSUED
Douglas	Current TO 900 PM TUE	Trace (80%) to 0.2" (40%) to 0.7" (10%)	ISSUED
Jefferson	Current TO 900 PM TUE	Trace (80%) to 0.2" (40%) to 0.7" (10%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 900 PM TUE	Trace (90%) to 0.2" (40%) to 0.7" (10%)	ISSUED
Douglas	Current TO 900 PM TUE	Trace (90%) to 0.2" (40%) to 0.7" (10%)	ISSUED
Jefferson	Current TO 900 PM TUE	Trace (90%) to 0.2" (40%) to 0.7" (10%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.