Flash Flood Prediction Program

-	Message 1's will be allowed to expire at 10:00 pm as the threat for heavy rainfall has ended for the day.
-	Additional rain showers continue likely overnight but rainfall rates will be light and produce minimal runoff. Chances for isolated rain showers will taper off after 2:00 am Sunday but cannot be ruled out into daybreak.
-	With the monsoon moisture plume firmly overhead a threat for thunderstorms with the potential for heavy rainfall will continue on Sunday. Strength of storms will hinge upon daytime heating/cloud cover and upper level features.

STORM RAINFALL POTENTIAL AND DURATION: Isolated to widely scattered rain showers will produce a trace to 0.2" 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 0.2-0.6" in 10-30 minutes.

County	Message	Valid Times	Prime Time
Boulder County	1	Current TO 1000 PM	Current TO 945 PM
Jefferson County	1	Current TO 1000 PM	Current TO 945 PM
Broomfield County	1	Current TO 1000 PM	Current TO 945 PM
Douglas County	1	Current TO 1000 PM	Current TO 945 PM
Adams County	1	Current TO 1000 PM	Current TO 945 PM
Denver County	1	Current TO 1000 PM	Current TO 945 PM
DIA	1	Current TO 1000 PM	Current TO 945 PM
Arapahoe County	1	Current TO 1000 PM	Current TO 945 PM
the City of Aurora	1	Current TO 1000 PM	Current TO 945 PM
Arvada	1	Current TO 1000 PM	Current TO 945 PM
Wheat Ridge	1	Current TO 1000 PM	Current TO 945 PM
Lakewood	1	Current TO 1000 PM	Current TO 945 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 600 AM SUN	Trace (90%) to 0.1" (50%) to 0.3" (10%)	ISSUED
Arapahoe	Current TO 600 AM SUN	Trace (90%) to 0.1" (50%) to 0.3" (10%)	ISSUED
Boulder	Current TO 600 AM SUN	Trace (90%) to 0.1" (50%) to 0.3" (10%)	ISSUED
Broomfield	Current TO 600 AM SUN	Trace (90%) to 0.1" (50%) to 0.3" (10%)	ISSUED
Denver	Current TO 600 AM SUN	Trace (90%) to 0.1" (50%) to 0.3" (10%)	ISSUED
Douglas	Current TO 600 AM SUN	Trace (90%) to 0.1" (50%) to 0.3" (10%)	ISSUED
Jefferson	Current TO 600 AM SUN	Trace (90%) to 0.1" (50%) to 0.3" (10%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 600 AM SUN	Trace (90%) to 0.1" (50%) to 0.3" (10%)	ISSUED
Douglas	Current TO 600 AM SUN	Trace (90%) to 0.1" (50%) to 0.3" (10%)	ISSUED
Jefferson	Current TO 600 AM SUN	Trace (90%) to 0.1" (50%) to 0.3" (10%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.