Flash Flood Prediction Program

-	Message 1's will be allowed to expire at 9:00 pm as the threat for heavy rainfall has ended for the day.
-	A strong westerly gust front from the foothills was able to initiate strong thunderstorm development just to the east of the District earlier this evening. Those storms have moved southeastward as additional weak thunderstorms still persist over the District at this time. Any additional rainfall will remain minimal, if any, as storm chances come to an end over the next hour or so.
-	As skies gradually clear through the evening, overnight lows will drop into the low to mid 60's across the plains, mid mid to upper 50's along the foothills.

STORM RAINFALL POTENTIAL AND DURATION: Isolated rain showers will produce a trace to 0.1" in 10-30 minutes. Supplemental QPF is available at https://qpf.udfcd.org

WORST CASE SCENARIO: A weak to moderate thunderstorm is able to develop with the potential to produce 0.1-0.3" in 10-30 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 1000 PM SUN	Trace (20%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Arapahoe	Current TO 1000 PM SUN	Trace (20%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Boulder	Current TO 1000 PM SUN	Trace (20%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Broomfield	Current TO 1000 PM SUN	Trace (20%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Denver	Current TO 1000 PM SUN	Trace (20%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Douglas	Current TO 1000 PM SUN	Trace (20%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Jefferson	Current TO 1000 PM SUN	Trace (20%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 1000 PM SUN	Trace (20%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Douglas	Current TO 1000 PM SUN	Trace (20%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Jefferson	Current TO 1000 PM SUN	Trace (20%) to 0.1" (10%) to 0.3" (5%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.