Flash Flood Prediction Program

-	Message 1's will continue valid until midnight and may be extended should thunderstorm activity linger beyond that time.
-	Strong thunderstorms have developed over Larimer and Weld Counties and are slowly propagating southward. Should these storms maintain their current strength they will be capable of producing heavy rainfall within the District over the coming hours.
-	Best chances for stronger thunderstorms will be until around midnight but could linger into the early morning hours on Thursday.

STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers and weak thunderstorms will produce a 0.1-0.5" of rainfall. Moderate to strong thunderstorms will produce rainfall rates of 0.5-1.5" in 10-30 minutes.

WORST CASE SCENARIO: A slower moving thunderstorm or anchored thunderstorm has the potential to produce up to 2.6" of heavy rainfall in 45-75 minutes.

County	Message	Valid Times	Prime Time
Lakewood	1	200 PM TO 1159 PM	Current TO 1159 PM
Wheat Ridge	1	200 PM TO 1159 PM	Current TO 1159 PM
Arvada	1	200 PM TO 1159 PM	Current TO 1159 PM
the City of Aurora	1	200 PM TO 1159 PM	Current TO 1159 PM
Arapahoe County	1	200 PM TO 1159 PM	Current TO 1159 PM
DIA	1	200 PM TO 1159 PM	Current TO 1159 PM
Denver County	1	200 PM TO 1159 PM	Current TO 1159 PM
Adams County	1	200 PM TO 1159 PM	Current TO 1159 PM
Douglas County	1	200 PM TO 1159 PM	Current TO 1159 PM
Broomfield County	1	200 PM TO 1159 PM	Current TO 1159 PM
Jefferson County	1	200 PM TO 1159 PM	Current TO 1159 PM
Boulder County	1	200 PM TO 1159 PM	Current TO 1159 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 1159 PM WED	0.1" (80%) to 0.5" (50%) to 1.5" (20%)	ISSUED
Arapahoe	Current TO 1159 PM WED	0.1" (80%) to 0.5" (50%) to 1.5" (20%)	ISSUED
Boulder	Current TO 1159 PM WED	0.1" (80%) to 0.5" (50%) to 1.5" (20%)	ISSUED
Broomfield	Current TO 1159 PM WED	0.1" (80%) to 0.5" (50%) to 1.5" (20%)	ISSUED
Denver	Current TO 1159 PM WED	0.1" (80%) to 0.5" (50%) to 1.5" (20%)	ISSUED
Douglas	Current TO 1159 PM WED	0.1" (80%) to 0.5" (50%) to 1.5" (20%)	ISSUED
Jefferson	Current TO 1159 PM WED	0.1" (80%) to 0.5" (50%) to 1.5" (20%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 1159 PM WED	0.1" (90%) to 0.5" (60%) to 1.5" (30%)	ISSUED
Douglas	Current TO 1159 PM WED	0.1" (90%) to 0.5" (60%) to 1.5" (30%)	ISSUED
Jefferson	Current TO 1159 PM WED	0.1" (90%) to 0.5" (60%) to 1.5" (30%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.