Flash Flood Prediction Program

-	Message 1's will will be extended until midnight as rain showers and weak to possibly moderate thunderstorms continue possible over the next couple hours.
-	Rain showers and weak thunderstorms are ongoing, mainly W of Hwy 76 at this time. Rain showers and weak thunderstorms are expected to continue into the evening with chances for thunderstorms diminishing after midnight.
-	With a moist airmass in place even weak to moderate thunderstorms will be capable of producing heavy rainfall that may lead to excessive runoff. Beyond midnight additional rain showers are expected to continue into Saturday morning.

STORM RAINFALL POTENTIAL AND DURATION: Rain showers will produce 0.1-0.3" in 30-60 minutes. Weak to moderate thunderstorms will have the potential to produce rainfall rates of 0.3-0.8" in 10-30 minutes.

WORST CASE SCENARIO: A strong thunderstorm develops with the potential to produce 0.4-1.2" of heavy rain in 10-30 minutes and up to 1.8" in 45-60 minutes.

County	Message	Valid Times	Prime Time
Boulder County	1	Current TO 1159 PM	Current TO 1130 PM
Jefferson County	1	Current TO 1159 PM	Current TO 1130 PM
Broomfield County	1	Current TO 1159 PM	Current TO 1130 PM
Douglas County	1	Current TO 1159 PM	Current TO 1130 PM
Adams County	1	Current TO 1159 PM	Current TO 1130 PM
Denver County	1	Current TO 1159 PM	Current TO 1130 PM
DIA	1	Current TO 1159 PM	Current TO 1130 PM
Arapahoe County	1	Current TO 1159 PM	Current TO 1130 PM
the City of Aurora	1	Current TO 1159 PM	Current TO 1130 PM
Arvada	1	Current TO 1159 PM	Current TO 1130 PM
Wheat Ridge	1	Current TO 1159 PM	Current TO 1130 PM
Lakewood	1	Current TO 1159 PM	Current TO 1130 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 1159 PM FRI	0.1" (80%) to 0.3" (50%) to 0.8" (20%)	ISSUED
Arapahoe	Current TO 1159 PM FRI	0.1" (80%) to 0.3" (50%) to 0.8" (20%)	ISSUED
Boulder	Current TO 1159 PM FRI	0.1" (80%) to 0.3" (50%) to 0.8" (20%)	ISSUED
Broomfield	Current TO 1159 PM FRI	0.1" (80%) to 0.3" (50%) to 0.8" (20%)	ISSUED
Denver	Current TO 1159 PM FRI	0.1" (75%) to 0.3" (40%) to 0.8" (15%)	ISSUED
Douglas	Current TO 1159 PM FRI	0.1" (75%) to 0.3" (40%) to 0.8" (15%)	ISSUED
Jefferson	Current TO 1159 PM FRI	0.1" (80%) to 0.3" (50%) to 0.8" (20%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 1159 PM FRI	0.1" (80%) to 0.3" (50%) to 0.8" (20%)	ISSUED
Douglas	Current TO 1159 PM FRI	0.1" (80%) to 0.3" (50%) to 0.8" (20%)	ISSUED
Jefferson	Current TO 1159 PM FRI	0.1" (80%) to 0.3" (50%) to 0.8" (20%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.