Flash Flood Prediction Program

-	Message 1's have been extended until 4:00 AM tomorrow morning as the threat for heavy rainfall remains.
-	An outflow boundary from a cell to the south has moved all the way through the District initiating a few isolated rain showers/thunderstorms at this time. These storms have not been exceptionally strong, however, with good upper-level support aloft and dew points in the 50's, even small/weak showers have been efficient rain producers as they quickly pulse up and down. This will result in the largest threat being a quick 0.5" in 10-15 minutes as a storm pulses up and quickly rains itself out.
-	Best chance for these showers will be from now until 4am. Storms this evening will be very hit and miss as they remain fairly stationary, which has also increased the chance for isolated brief heavy rainfall through the overnight. Skies will gradually clear tomorrow by daybreak with another chance for showers/thunderstorms tomorrow.

STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers will produce a trace to 0.3" in 10-30 minutes. a moderate to strong rain shower/thunderstorm will produce 0.3-0.6" in 10-30 minutes.

WORST CASE SCENARIO: A strong, stationary storm has the potential to produce 0.6-1.8" in 45-60 minutes.

County	Message	Valid Times	Prime Time
Arvada	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
the City of Aurora	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
Arapahoe County	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
DIA	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
Denver County	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
Adams County	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
Douglas County	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
Broomfield County	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
Jefferson County	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
Boulder County	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
Wheat Ridge	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY
Lakewood	1	Current TO 400 AM SATURDAY	Current TO 300 AM SATURDAY

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 400 AM SAT	Trace (50%) to 0.3" (25%) to 0.6" (10%)	ISSUED
Arapahoe	Current TO 400 AM SAT	Trace (40%) to 0.3" (20%) to 0.6" (5%)	ISSUED
Boulder	Current TO 400 AM SAT	Trace (50%) to 0.3" (25%) to 0.6" (10%)	ISSUED
Broomfield	Current TO 400 AM SAT	Trace (50%) to 0.3" (25%) to 0.6" (10%)	ISSUED
Denver	Current TO 400 AM SAT	Trace (50%) to 0.3" (25%) to 0.6" (10%)	ISSUED
Douglas	Current TO 400 AM SAT	Trace (40%) to 0.3" (20%) to 0.6" (5%)	ISSUED
Jefferson	Current TO 400 AM SAT	Trace (50%) to 0.3" (25%) to 0.6" (10%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 400 AM SAT	Trace (50%) to 0.3" (25%) to 0.6" (10%)	ISSUED
Douglas	Current TO 400 AM SAT	Trace (40%) to 0.3" (20%) to 0.6" (5%)	ISSUED
Jefferson	Current TO 400 AM SAT	Trace (50%) to 0.3" (25%) to 0.6" (10%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.