Flash Flood Prediction Program

-	Weak westerly flow aloft over Colorado will help afternoon temperatures rebound back into the low 70s today, with mostly-sunny skies expected this morning.
-	A weak disturbance arrives from the SW this afternoon, which will help trigger widely-scattered showers and thunderstorms over the higher terrain. A few of these storms will drift onto the adjacent plains late this afternoon and evening. Most of today's storms will produce light to briefly-moderate rainfall amounts, but an isolated stronger storm capable of brief heavy rainfall remains possible.
-	Today's storms will likely favor the southern portions of the District, where better surface moisture resides. Storms will track to the ENE at around 13-18mph, with the best chance for a storm over the District occurring between about 3pm-8pm.

STORM RAINFALL POTENTIAL AND DURATION: Typical showers and thunderstorms will produce rainfall amounts of 0.05-0.20" in 10-30 minutes. An isolated stronger thunderstorm could produce rainfall between 0.20-0.50" in 10-30minutes.

WORST CASE SCENARIO: A strong, slow-moving thunderstorm or training of storm cells results in rainfall up to 0.80" in 45-60 minutes.

A LOOK AHEAD: The warming trend continues Friday as flow aloft turns more southwesterly over Colorado. Expect highs in the mid to upper 70s, with only a slight chance for an isolated shower or thunderstorm.

Location	Prime Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	300 PM TO 800 PM	0.1" (60%) to 0.3" (30%) to 0.5" (10%)	LOW
Arapahoe	300 PM TO 800 PM	0.1" (65%) to 0.3" (35%) to 0.5" (10%)	LOW
Boulder	300 PM TO 800 PM	0.1" (60%) to 0.3" (30%) to 0.5" (10%)	LOW
Broomfield	300 PM TO 800 PM	0.1" (60%) to 0.3" (30%) to 0.5" (10%)	LOW
Denver	300 PM TO 800 PM	0.1" (60%) to 0.3" (30%) to 0.5" (10%)	LOW
Douglas	300 PM TO 800 PM	0.1" (75%) to 0.3" (50%) to 0.5" (15%)	LOW
Jefferson	300 PM TO 800 PM	0.1" (70%) to 0.3" (45%) to 0.5" (10%)	LOW
Foothills above 6500ft
Boulder	300 PM TO 800 PM	0.1" (65%) to 0.3" (40%) to 0.5" (10%)	LOW
Douglas	300 PM TO 800 PM	0.1" (80%) to 0.3" (55%) to 0.5" (15%)	LOW
Jefferson	300 PM TO 800 PM	0.1" (75%) to 0.3" (50%) to 0.5" (15%)	LOW

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.