Flash Flood Prediction Program

-	Message 1's have been issued for the entire District and will be valid until 8:30pm this evening.
-	Thunderstorms have developed to the NW of the District and will be moving into the District shortly. These storms appear to be associated with a weak boundary moving southward that will pass through the District this afternoon and may be a focus for slower moving thunderstorms.
-	Thunderstorms that develop today are not expected to be as strong as previous days but will continue to have the potential to produce heavy rainfall that may lead to excessive runoff and possibly flash flooding. Best chances for storms will be through 7:30pm.

STORM RAINFALL POTENTIAL AND DURATION: Moderate to strong thunderstorms will have the potential to produce 0.3-0.9" in 10-30 minutes.

WORST CASE SCENARIO: A stationary strong thunderstorm may result in up to 1.8" in 45-60 minutes.

County	Message	Valid Times	Prime Time
Denver County	1	Current TO 830 PM	300 PM TO 730 PM
DIA	1	Current TO 830 PM	300 PM TO 730 PM
Arapahoe County	1	Current TO 830 PM	300 PM TO 730 PM
the City of Aurora	1	Current TO 830 PM	300 PM TO 730 PM
Arvada	1	Current TO 830 PM	300 PM TO 730 PM
Adams County	1	Current TO 830 PM	300 PM TO 730 PM
Douglas County	1	Current TO 830 PM	300 PM TO 730 PM
Broomfield County	1	Current TO 830 PM	230 PM TO 730 PM
Jefferson County	1	Current TO 830 PM	300 PM TO 730 PM
Boulder County	1	Current TO 830 PM	Current TO 730 PM
Wheat Ridge	1	Current TO 830 PM	300 PM TO 730 PM
Lakewood	1	Current TO 830 PM	300 PM TO 730 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 830 PM SAT	0.1" (65%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Arapahoe	Current TO 830 PM SAT	0.1" (65%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Boulder	Current TO 830 PM SAT	0.1" (85%) to 0.3" (50%) to 0.9" (15%)	ISSUED
Broomfield	Current TO 830 PM SAT	0.1" (65%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Denver	Current TO 830 PM SAT	0.1" (65%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Douglas	Current TO 830 PM SAT	0.1" (65%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Jefferson	Current TO 830 PM SAT	0.1" (65%) to 0.3" (30%) to 0.9" (15%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 830 PM SAT	0.1" (100%) to 0.3" (60%) to 0.9" (15%)	ISSUED
Douglas	Current TO 830 PM SAT	0.1" (85%) to 0.3" (50%) to 0.9" (15%)	ISSUED
Jefferson	Current TO 830 PM SAT	0.1" (85%) to 0.3" (50%) to 0.9" (15%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.