Flash Flood Prediction Program

-	Message 1's will be allowed to expire at 10:00pm as the threat for heavy rainfall has come to an end.
-	A cold front will move through the District tonight at the surface, while an upper level trough of low pressure continues to approach from the west. This will result in showers and isolated weak thunderstorms developing during the overnight period, favoring northern and western areas of the District.
-	Although rain chances will continue overnight and into Tuesday morning, rainfall rates will generally be light with brief moderate rains possible under thunderstorms.

STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce rainfall amounts of TR-0.15" in 10-30 minutes with up to 0.3" possible with thunderstorms in 10-30 minutes.

WORST CASE SCENARIO: A heavier shower or thunderstorm produces up to 0.6" in 60 minutes or less.

County	Message	Valid Times	Prime Time
Adams County	1	Current TO 1000 PM	Current TO 1000 PM
Douglas County	1	Current TO 1000 PM	Current TO 1000 PM
Broomfield County	1	Current TO 1000 PM	Current TO 1000 PM
Jefferson County	1	Current TO 1000 PM	Current TO 1000 PM
Boulder County	1	Current TO 1000 PM	Current TO 1000 PM
Lakewood	1	Current TO 1000 PM	Current TO 1000 PM
Wheat Ridge	1	Current TO 1000 PM	Current TO 1000 PM
Arvada	1	Current TO 1000 PM	Current TO 1000 PM
Denver County	1	Current TO 1000 PM	Current TO 1000 PM
DIA	1	Current TO 1000 PM	Current TO 1000 PM
Arapahoe County	1	Current TO 1000 PM	Current TO 1000 PM
the City of Aurora	1	Current TO 1000 PM	Current TO 1000 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 1000 AM TUE	Trace (95%) to 0.1" (60%) to 0.3" (30%)	ISSUED
Arapahoe	Current TO 1000 AM TUE	Trace (80%) to 0.1" (50%) to 0.3" (20%)	ISSUED
Boulder	Current TO 1000 AM TUE	Trace (95%) to 0.1" (60%) to 0.3" (30%)	ISSUED
Broomfield	Current TO 1000 AM TUE	Trace (95%) to 0.1" (60%) to 0.3" (30%)	ISSUED
Denver	Current TO 1000 AM TUE	Trace (90%) to 0.1" (55%) to 0.3" (25%)	ISSUED
Douglas	Current TO 1000 AM TUE	Trace (80%) to 0.1" (45%) to 0.3" (15%)	ISSUED
Jefferson	Current TO 1000 AM TUE	Trace (95%) to 0.1" (55%) to 0.3" (25%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 1000 AM TUE	Trace (95%) to 0.1" (60%) to 0.3" (30%)	ISSUED
Douglas	Current TO 1000 AM TUE	Trace (80%) to 0.1" (45%) to 0.3" (15%)	ISSUED
Jefferson	Current TO 1000 AM TUE	Trace (95%) to 0.1" (60%) to 0.3" (30%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.