Flash Flood Prediction Program

-	Message 1's will be allowed to expire at 9:00pm as the threat for heavy rainfall has come to an end.
-	Temperatures have cooled behind a round of strong thunderstorms for south and eastern portions of the District that has slowly moved eastward and out of the District at this time. An additional round of rain showers with a few rumbles of thunder will be possible later this evening, but heavy rainfall is not expected. Best chance for an additional round of showers will be between 10pm and 2am.
-	Overnight lows will drop into the upper 50's to low 60's on the plains with low to mid 50's along the foothills. Tomorrow will be similar with another chance for strong to severe thunderstorms in the afternoon and early evening with another likely threat for heavy rainfall.

STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers will produce a trace to 0.2" of rainfall in 10-30 minutes. A weak to moderate thunderstorm will produce 0.2-0.5" in 10-30 minutes.

WORST CASE SCENARIO: A moderate to strong thunderstorm has the potential to produce 0.5-1.0" in 60-90 minutes.

County	Message	Valid Times	Prime Time
Boulder County	1	Current TO 900 PM	Current TO 900 PM
Jefferson County	1	Current TO 900 PM	Current TO 900 PM
Broomfield County	1	Current TO 900 PM	Current TO 900 PM
Douglas County	1	Current TO 900 PM	Current TO 900 PM
Adams County	1	Current TO 900 PM	Current TO 900 PM
Denver County	1	Current TO 900 PM	Current TO 900 PM
DIA	1	Current TO 900 PM	Current TO 900 PM
Arapahoe County	1	Current TO 900 PM	Current TO 900 PM
the City of Aurora	1	Current TO 900 PM	Current TO 900 PM
Arvada	1	Current TO 900 PM	Current TO 900 PM
Wheat Ridge	1	Current TO 900 PM	Current TO 900 PM
Lakewood	1	Current TO 900 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 TUE	Trace (30%) to 0.2" (15%) to 0.5" (5%)	ISSUED
Arapahoe	Current TO 200 AM TUE	Trace (30%) to 0.2" (15%) to 0.5" (5%)	ISSUED
Boulder	Current TO 200 AM TUE	Trace (30%) to 0.2" (15%) to 0.5" (5%)	ISSUED
Broomfield	Current TO 200 AM TUE	Trace (30%) to 0.2" (15%) to 0.5" (5%)	ISSUED
Denver	Current TO 200 AM TUE	Trace (30%) to 0.2" (15%) to 0.5" (5%)	ISSUED
Douglas	Current TO 200 AM TUE	Trace (30%) to 0.2" (15%) to 0.5" (5%)	ISSUED
Jefferson	Current TO 200 AM TUE	Trace (30%) to 0.2" (15%) to 0.5" (5%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 200 AM TUE	Trace (30%) to 0.2" (15%) to 0.5" (5%)	ISSUED
Douglas	Current TO 200 AM TUE	Trace (30%) to 0.2" (15%) to 0.5" (5%)	ISSUED
Jefferson	Current TO 200 AM TUE	Trace (30%) to 0.2" (15%) to 0.5" (5%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.