Flash Flood Prediction Program

-	Message 1's have been issued for the entire District effective until 10pm this evening.
-	A few storms initiated off a relatively weak gust front earlier this evening, which have effectively sent additional gust fronts into the District at this time. Currently low to mid 50s dew points across the District, along with the gust front trigger, provided the ingredients needed to get a line of storms to produce from DIA to Aurora at this time. These cells will continue to build over the next hour or so resulting in a chance for heavy rainfall.
-	Very little to slow moving storm motions will also increase the chance for longer lasting moderate to heavy rainfall over the next couple of hours. Best chance for storms will be until 9pm as additional outflow boundaries will be possible. However, storm intensities should decrease after sunset. Although with adequate moisture in place, typical rain showers could produce moderate to heavy rainfall.

STORM RAINFALL POTENTIAL AND DURATION: Moderate to strong thunderstorms will have the potential to produce 0.3-0.9" in 10-30 minutes.

WORST CASE SCENARIO: A large or slower moving thunderstorm may result in up to 1.6" of rain in 45-60 minutes.

County	Message	Valid Times	Prime Time
Denver County	1	Current TO 1000 PM	Current TO 930 PM
Boulder County	1	Current TO 1000 PM	Current TO 930 PM
Jefferson County	1	Current TO 1000 PM	Current TO 930 PM
Broomfield County	1	Current TO 1000 PM	Current TO 930 PM
Douglas County	1	Current TO 1000 PM	Current TO 930 PM
Adams County	1	Current TO 1000 PM	Current TO 930 PM
DIA	1	Current TO 1000 PM	Current TO 930 PM
Arapahoe County	1	Current TO 1000 PM	Current TO 930 PM
the City of Aurora	1	Current TO 1000 PM	Current TO 930 PM
Arvada	1	Current TO 1000 PM	Current TO 930 PM
Wheat Ridge	1	Current TO 1000 PM	Current TO 930 PM
Lakewood	1	Current TO 1000 PM	Current TO 930 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 1000 PM WED	0.1" (60%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Arapahoe	Current TO 1000 PM WED	0.1" (60%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Boulder	Current TO 1000 PM WED	0.1" (60%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Broomfield	Current TO 1000 PM WED	0.1" (60%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Denver	Current TO 1000 PM WED	0.1" (60%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Douglas	Current TO 1000 PM WED	0.1" (60%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Jefferson	Current TO 1000 PM WED	0.1" (60%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 1000 PM WED	0.1" (50%) to 0.3" (25%) to 0.9" (5%)	ISSUED
Douglas	Current TO 1000 PM WED	0.1" (50%) to 0.3" (25%) to 0.9" (5%)	ISSUED
Jefferson	Current TO 1000 PM WED	0.1" (50%) to 0.3" (25%) to 0.9" (5%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.