Flash Flood Prediction Program

-	Message 1's have been issued for the entire District, valid until 10:00pm this evening.
-	Showers and thunderstorms continue to rotate around an area of low pressure this afternoon, producing mainly light to briefly-moderate rainfall amounts. Stronger storms capable of heavy rainfall are possible later this afternoon and evening, as surface heating further destabilizes the atmosphere.
-	Storms this afternoon and evening will generally track to the SE between 15-25mph as the area of low pressure pulls away from Colorado. Light showers and isolated weak thunderstorms remain possible during the overnight period as well.

STORM RAINFALL POTENTIAL AND DURATION: Weak showers and thunderstorms will produce rainfall amounts of 0.05-0.2" in 10-30 minutes. Stronger thunderstorms will produce rainfall amounts of 0.2-0.6" in 10-30 minutes.

WORST CASE SCENARIO: A slower moving strong thunderstorm or training of strong storm cells could result in rainfall up to 1.8" 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 300 AM WED	0.1" (90%) to 0.3" (60%) to 0.6" (15%)	ISSUED
Arapahoe	Current TO 300 AM WED	0.1" (90%) to 0.3" (60%) to 0.6" (15%)	ISSUED
Boulder	Current TO 300 AM WED	0.1" (90%) to 0.3" (60%) to 0.6" (10%)	ISSUED
Broomfield	Current TO 300 AM WED	0.1" (90%) to 0.3" (60%) to 0.6" (10%)	ISSUED
Denver	Current TO 300 AM WED	0.1" (90%) to 0.3" (60%) to 0.6" (15%)	ISSUED
Douglas	Current TO 300 AM WED	0.1" (90%) to 0.3" (60%) to 0.6" (10%)	ISSUED
Jefferson	Current TO 300 AM WED	0.1" (90%) to 0.3" (60%) to 0.6" (10%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 300 AM WED	0.1" (90%) to 0.3" (60%) to 0.6" (10%)	ISSUED
Douglas	Current TO 300 AM WED	0.1" (90%) to 0.3" (60%) to 0.6" (10%)	ISSUED
Jefferson	Current TO 300 AM WED	0.1" (90%) to 0.3" (60%) to 0.6" (10%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.