Flash Flood Prediction Program

-	Message 1's issued for the entire District will continue valid until 10:00pm.
-	Shower and thunderstorm activity has largely diminished at this hour across much of NE Colorado, as upper-level low pressure lifts NE. The threat for heavy rainfall is now decreasing.
-	Current observations show another batch of showers sinking S out of Wyoming, which should move into the District between about 8-9pm. This final pulse appears light, likely favoring rain showers vs. thunderstorms at this time.

STORM RAINFALL POTENTIAL AND DURATION: Light to moderate showers and thunderstorms will produce rainfall amounts between 0.05-0.20" in 10-30 minutes. Strong thunderstorms may produce rainfall between 0.20-0.50" in 10-30 minutes.

WORST CASE SCENARIO: A strong, nearly-stationary thunderstorm produces up to 1.20" rainfall in 60-90 minutes.

County	Message	Valid Times	Prime Time
Boulder County	1	Current TO 1000 PM	Current TO 900 PM
Jefferson County	1	Current TO 1000 PM	Current TO 900 PM
Broomfield County	1	Current TO 1000 PM	Current TO 900 PM
Douglas County	1	Current TO 1000 PM	Current TO 900 PM
Adams County	1	Current TO 1000 PM	Current TO 900 PM
Denver County	1	Current TO 1000 PM	Current TO 900 PM
DIA	1	Current TO 1000 PM	Current TO 900 PM
Arapahoe County	1	Current TO 1000 PM	Current TO 900 PM
the City of Aurora	1	Current TO 1000 PM	Current TO 900 PM
Arvada	1	Current TO 1000 PM	Current TO 900 PM
Wheat Ridge	1	Current TO 1000 PM	Current TO 900 PM
Lakewood	1	Current TO 1000 PM	Current TO 900 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 200 AM WED	0.1" (70%) to 0.3" (40%) to 0.5" (10%)	ISSUED
Arapahoe	Current TO 200 AM WED	0.1" (70%) to 0.3" (40%) to 0.5" (10%)	ISSUED
Boulder	Current TO 200 AM WED	0.1" (70%) to 0.3" (40%) to 0.5" (10%)	ISSUED
Broomfield	Current TO 200 AM WED	0.1" (70%) to 0.3" (40%) to 0.5" (10%)	ISSUED
Denver	Current TO 200 AM WED	0.1" (70%) to 0.3" (40%) to 0.5" (10%)	ISSUED
Douglas	Current TO 200 AM WED	0.1" (65%) to 0.3" (35%) to 0.5" (5%)	ISSUED
Jefferson	Current TO 200 AM WED	0.1" (65%) to 0.3" (35%) to 0.5" (5%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 200 AM WED	0.1" (65%) to 0.3" (35%) to 0.5" (5%)	ISSUED
Douglas	Current TO 200 AM WED	0.1" (65%) to 0.3" (35%) to 0.5" (5%)	ISSUED
Jefferson	Current TO 200 AM WED	0.1" (70%) to 0.3" (40%) to 0.5" (10%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.