Flash Flood Prediction Program

-	Message 1's will continue valid until 8pm as additional rain showers/thunderstorms develop over the foothills at this time.
-	Strong to severe storms that impacted the District this afternoon have moved N/NE and are no longer a threat to the District. Additional storms have developed to the west along the foothills and will slowly move N/NE and into northwestern portions of the District over the next few hours. Storm motions will continue to be fairly quick between 10-20mph which will also help limit point rainfall amounts.
-	Storms have diminished in intensity at this time, but the threat still remains for brief heavy rainfall with a very slight chance for severe weather, including large hail, gusty winds and frequent lightning.

STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers and thunderstorms will have the potential to produce TR-0.3" in 10-30 minutes. Strong thunderstorms will have the potential to produce 0.3-0.7" in 10-30 minutes.

WORST CASE SCENARIO: An anchored strong thunderstorm or training of thunderstorm cells may result in up to 1.5" of rain in 45-60 minutes.

County	Message	Valid Times	Prime Time
the City of Aurora	1	Current TO 800 PM	Current TO 700 PM
DIA	1	Current TO 800 PM	Current TO 700 PM
Denver County	1	Current TO 800 PM	Current TO 700 PM
Adams County	1	Current TO 800 PM	Current TO 700 PM
Douglas County	1	Current TO 800 PM	Current TO 700 PM
Broomfield County	1	Current TO 800 PM	Current TO 700 PM
Jefferson County	1	Current TO 800 PM	Current TO 700 PM
Arapahoe County	1	Current TO 800 PM	Current TO 700 PM
Boulder County	1	Current TO 800 PM	Current TO 700 PM
Arvada	1	Current TO 800 PM	Current TO 700 PM
Wheat Ridge	1	Current TO 800 PM	Current TO 700 PM
Lakewood	1	Current TO 800 PM	Current TO 700 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 800 PM SAT	Trace (60%) to 0.3" (40%) to 0.7" (10%)	ISSUED
Arapahoe	Current TO 800 PM SAT	Trace (50%) to 0.3" (30%) to 0.7" (10%)	ISSUED
Boulder	Current TO 800 PM SAT	Trace (75%) to 0.3" (50%) to 0.7" (15%)	ISSUED
Broomfield	Current TO 800 PM SAT	Trace (75%) to 0.3" (50%) to 0.7" (15%)	ISSUED
Denver	Current TO 800 PM SAT	Trace (50%) to 0.3" (30%) to 0.7" (10%)	ISSUED
Douglas	Current TO 800 PM SAT	Trace (50%) to 0.3" (30%) to 0.7" (10%)	ISSUED
Jefferson	Current TO 800 PM SAT	Trace (50%) to 0.3" (30%) to 0.7" (10%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 800 PM SAT	Trace (50%) to 0.3" (30%) to 0.7" (10%)	ISSUED
Douglas	Current TO 800 PM SAT	Trace (50%) to 0.3" (30%) to 0.7" (10%)	ISSUED
Jefferson	Current TO 800 PM SAT	Trace (50%) to 0.3" (30%) to 0.7" (10%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.