Flash Flood Prediction Program

-	Moisture increases across Colorado on Thursday, as a series of Pacific disturbances begin to impact the area. NW flow aloft will turn more westerly throughout the day, which will push afternoon temperatures back into the mid 80s.
-	A weak ripple in the flow aloft will help trigger scattered showers and thunderstorms along the Front Range late this afternoon and evening. The threat for heavy rainfall from today's storms is low, but with low to mid 40s dew points expected this evening, isolated heavy rainfall remains possible.
-	Today's showers and storms will track to the ESE at around 20-25mph, with the best chance for a storm over the District occurring between about 4pm-9pm.

STORM RAINFALL POTENTIAL AND DURATION: Weak to moderate showers and thunderstorms will produce rainfall amounts between Trace-0.20" in 10-30 minutes. Isolated stronger thunderstorms could produce rainfall between 0.20-0.50" in 10-30 minutes.

WORST CASE SCENARIO: A strong thunderstorm or training of cells over the same area results in rainfall up to 0.70" in 45-75 minutes.

A LOOK AHEAD: Temperatures remain similar for Friday, with highs in the mid 80s ahead of a secondary disturbance arriving from the W. Showers and thunderstorms are expected once again during the afternoon and evening, a few of which could be stronger and capable of heavy rainfall.

Location	Prime Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	400 PM TO 900 PM	Trace (75%) to 0.2" (55%) to 0.5" (15%)	LOW
Arapahoe	400 PM TO 900 PM	Trace (75%) to 0.2" (55%) to 0.5" (15%)	LOW
Boulder	400 PM TO 900 PM	Trace (70%) to 0.2" (50%) to 0.5" (10%)	LOW
Broomfield	400 PM TO 900 PM	Trace (70%) to 0.2" (50%) to 0.5" (10%)	LOW
Denver	400 PM TO 900 PM	Trace (75%) to 0.2" (55%) to 0.5" (15%)	LOW
Douglas	400 PM TO 900 PM	Trace (70%) to 0.2" (50%) to 0.5" (10%)	LOW
Jefferson	400 PM TO 900 PM	Trace (70%) to 0.2" (50%) to 0.5" (10%)	LOW
Foothills above 6500ft
Boulder	200 PM TO 800 PM	Trace (80%) to 0.2" (60%) to 0.5" (20%)	LOW
Douglas	200 PM TO 800 PM	Trace (80%) to 0.2" (60%) to 0.5" (20%)	LOW
Jefferson	200 PM TO 800 PM	Trace (80%) to 0.2" (60%) to 0.5" (20%)	LOW

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.