Flash Flood Prediction Program

-	Message 2's continue valid until 9pm as the threat for heavy rainfall continues into this afternoon and evening.
-	Cooler and cloudy this morning with a few lingering rain showers out on the eastern plains at this time. High temperatures today will reach the mid to upper 70's this afternoon which could help limit the potential for stronger storms. However, with adequate moisture still in place, even moderate storms could produce heavy rainfall with the chance for longer duration rainfall from storms that form along outflow boundaries that remain stationary for an extended period of time. Storm chances will start between noon and 1pm, with prime time between 4-9pm. With the recent moisture it may not take as much rain to produce excessive runoff and possibly flash flooding.
-	A chance will remain for a few scattered lingering rain showers through the evening and into the overnight. Overnight skies will remain cloudy with lows dropping into the 60's on the plains with mid to upper 50's along the foothills.

STORM RAINFALL POTENTIAL AND DURATION: Weak thunderstorms will produce 0.2-0.6" in 10-30 minutes. Moderate to strong thunderstorms will have the potential to produce 0.6-1.8" of heavy rain in 10-30 minutes.

WORST CASE SCENARIO: A strong thunderstorm will have the potential to produce up to 3.6" in 45-60 minutes. Storms that persist beyond 60 minutes may produce locally higher amounts.

County	Message	Valid Times	Prime Time
the City of Aurora	2	Current TO 900 PM	Current TO 900 PM
Arapahoe County	2	Current TO 900 PM	Current TO 900 PM
DIA	2	Current TO 900 PM	Current TO 900 PM
Denver County	2	Current TO 900 PM	Current TO 900 PM
Adams County	2	Current TO 900 PM	Current TO 900 PM
Douglas County	2	Current TO 900 PM	Current TO 900 PM
Broomfield County	2	Current TO 900 PM	Current TO 900 PM
Jefferson County	2	Current TO 900 PM	Current TO 900 PM
Boulder County	2	Current TO 900 PM	Current TO 900 PM
Lakewood	2	Current TO 900 PM	Current TO 900 PM
Wheat Ridge	2	Current TO 900 PM	Current TO 900 PM
Arvada	2	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 900 PM SAT	0.2" (80%) to 0.6" (60%) to 1.8" (30%)	ISSUED
Arapahoe	Current TO 900 PM SAT	0.2" (80%) to 0.6" (60%) to 1.8" (30%)	ISSUED
Boulder	Current TO 900 PM SAT	0.2" (80%) to 0.6" (60%) to 1.8" (30%)	ISSUED
Broomfield	Current TO 900 PM SAT	0.2" (80%) to 0.6" (60%) to 1.8" (30%)	ISSUED
Denver	Current TO 900 PM SAT	0.2" (80%) to 0.6" (60%) to 1.8" (30%)	ISSUED
Douglas	Current TO 900 PM SAT	0.2" (80%) to 0.6" (60%) to 1.8" (30%)	ISSUED
Jefferson	Current TO 900 PM SAT	0.2" (80%) to 0.6" (60%) to 1.8" (30%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 900 PM SAT	0.2" (90%) to 0.6" (70%) to 1.8" (40%)	ISSUED
Douglas	Current TO 900 PM SAT	0.2" (90%) to 0.6" (70%) to 1.8" (40%)	ISSUED
Jefferson	Current TO 900 PM SAT	0.2" (90%) to 0.6" (70%) to 1.8" (40%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.