Flash Flood Prediction Program

Message 1’s will be allowed to expire at 9pm as the threat of heavy rain has come to an end.

Stronger storms that impacted the District this afternoon have moved east at this time, with light showers lingering across the foothills. Light to moderate intermittent showers are possible throughout the evening and overnight hours, with overnight temperatures in the upper 40s to low 50s.

STORM RAINFALL POTENTIAL AND DURATION: Stratified rainfall will continue overnight, producing a trace to 0.20” total in 10-30 minutes.

WORST CASE SCENARIO: Moderate showers could produce 0.20”-0.40” total in 10-30 minutes.

County	Message	Valid Times	Prime Time
Boulder County	1	Current TO 900 PM	Current TO 830 PM
Jefferson County	1	Current TO 900 PM	Current TO 830 PM
Broomfield County	1	Current TO 900 PM	Current TO 830 PM
Douglas County	1	Current TO 900 PM	Current TO 830 PM
Adams County	1	Current TO 900 PM	Current TO 830 PM
Denver County	1	Current TO 900 PM	Current TO 830 PM
DIA	1	Current TO 900 PM	Current TO 830 PM
Arapahoe County	1	Current TO 900 PM	Current TO 830 PM
the City of Aurora	1	Current TO 900 PM	Current TO 830 PM
Arvada	1	Current TO 900 PM	Current TO 830 PM
Wheat Ridge	1	Current TO 900 PM	Current TO 830 PM
Lakewood	1	Current TO 900 PM	Current TO 830 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 400 AM FRI	Trace (75%) to 0.2" (50%) to 0.4" (25%)	NONE
Arapahoe	Current TO 400 AM FRI	Trace (75%) to 0.2" (50%) to 0.4" (25%)	NONE
Boulder	Current TO 400 AM FRI	Trace (75%) to 0.2" (50%) to 0.4" (25%)	NONE
Broomfield	Current TO 400 AM FRI	Trace (75%) to 0.2" (50%) to 0.4" (25%)	NONE
Denver	Current TO 400 AM FRI	Trace (75%) to 0.2" (50%) to 0.4" (25%)	NONE
Douglas	Current TO 400 AM FRI	Trace (75%) to 0.2" (50%) to 0.4" (25%)	NONE
Jefferson	Current TO 400 AM FRI	Trace (75%) to 0.2" (50%) to 0.4" (25%)	NONE
Foothills above 6500ft
Boulder	Current TO 400 AM FRI	Trace (75%) to 0.2" (50%) to 0.4" (25%)	NONE
Douglas	Current TO 400 AM FRI	Trace (75%) to 0.2" (50%) to 0.4" (25%)	NONE
Jefferson	Current TO 400 AM FRI	Trace (75%) to 0.2" (50%) to 0.4" (25%)	NONE

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.