Flash Flood Prediction Program

-	Message 1's will continue valid for eastern areas of the District (Adams, Arapahoe, Denver and Douglas Counties) until 9:00 PM this evening.
-	Fast moving rain showers and weak to moderate thunderstorms will continue to track over the District through the evening. Training of thunderstorm cells will continue to be the primary threat for extended periods of heavy rainfall favoring areas along and E of I-25 for the heavier showers.
-	The threat for rain showers and weak thunderstorms will continue well into the evening but should begin to favor generally rain after 8:00 or 9:00 PM.

STORM RAINFALL POTENTIAL AND DURATION: Thunderstorms will be capable of producing rainfall of 0.3-0.7" in 10-30 minutes.

WORST CASE SCENARIO: Training of strong thunderstorm cells may result in heavy rainfall of up to 1.4" in 60-90 minutes.

County	Message	Valid Times	Prime Time
Douglas County	1	Current TO 900 PM	Current TO 800 PM
Adams County	1	Current TO 900 PM	Current TO 800 PM
Denver County	1	Current TO 900 PM	Current TO 800 PM
DIA	1	Current TO 900 PM	Current TO 800 PM
Arapahoe County	1	Current TO 900 PM	Current TO 800 PM
the City of Aurora	1	Current TO 900 PM	Current TO 800 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 900 PM FRI	0.1" (95%) to 0.3" (60%) to 0.9" (15%)	ISSUED
Arapahoe	Current TO 900 PM FRI	0.1" (95%) to 0.3" (60%) to 0.9" (15%)	ISSUED
Boulder	Current TO 900 PM FRI	0.1" (95%) to 0.3" (50%) to 0.9" (10%)	LOW
Broomfield	Current TO 900 PM FRI	0.1" (95%) to 0.3" (50%) to 0.9" (10%)	LOW
Denver	Current TO 900 PM FRI	0.1" (95%) to 0.3" (60%) to 0.9" (15%)	ISSUED
Douglas	Current TO 900 PM FRI	0.1" (95%) to 0.3" (60%) to 0.9" (15%)	ISSUED
Jefferson	Current TO 900 PM FRI	0.1" (95%) to 0.3" (60%) to 0.9" (15%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 900 PM FRI	0.1" (80%) to 0.3" (40%) to 0.9" (5%)	LOW
Douglas	Current TO 900 PM FRI	0.1" (95%) to 0.3" (60%) to 0.9" (10%)	ISSUED
Jefferson	Current TO 900 PM FRI	0.1" (95%) to 0.3" (60%) to 0.9" (10%)	LOW

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.