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.
-	Light to moderate rain showers have been moving through the W and NW portions of the District over the past couple hours with the back edge of the shower activity currently moving off of the foothills and over the I-25 corridor. These showers have been producing 0.05-0.30" of rain as they pass through and will exit the District from SW to NE between 11:00pm and midnight. A nice, soaking rain will occur but excessive runoff is not expected.
-	Additional isolated rain showers will continue possible overnight into the early morning hours on Saturday with light to briefly moderate intensities. Tomorrow, the threat for thunderstorms with the potential for heavy rainfall will continue with prime time during the afternoon and early evening hours.

STORM RAINFALL POTENTIAL AND DURATION: Rain showers will produce a trace to 0.2". Moderate rain showers and weak to briefly moderate thunderstorms will have the potential to produce 0.2-0.4" in 10-30 minutes. Supplemental QPF is available at https://qpf.udfcd.org

WORST CASE SCENARIO: A moderate to strong thunderstorm is able to develop overnight with the potential to produce 0.4-1.2" in 10-30 minutes.

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

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 600 AM SAT	Trace (95%) to 0.2" (50%) to 0.4" (15%)	ISSUED
Arapahoe	Current TO 600 AM SAT	Trace (95%) to 0.2" (50%) to 0.4" (15%)	ISSUED
Boulder	Current TO 600 AM SAT	Trace (95%) to 0.2" (50%) to 0.4" (15%)	ISSUED
Broomfield	Current TO 600 AM SAT	Trace (95%) to 0.2" (50%) to 0.4" (15%)	ISSUED
Denver	Current TO 600 AM SAT	Trace (95%) to 0.2" (50%) to 0.4" (15%)	ISSUED
Douglas	Current TO 600 AM SAT	Trace (95%) to 0.2" (50%) to 0.4" (15%)	ISSUED
Jefferson	Current TO 600 AM SAT	Trace (95%) to 0.2" (50%) to 0.4" (15%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 600 AM SAT	Trace (95%) to 0.2" (50%) to 0.4" (15%)	ISSUED
Douglas	Current TO 600 AM SAT	Trace (95%) to 0.2" (50%) to 0.4" (15%)	ISSUED
Jefferson	Current TO 600 AM SAT	Trace (95%) to 0.2" (50%) to 0.4" (15%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.