Flash Flood Prediction Program

Message 1 has been issued for Douglas County and is valid until 9:00 PM.

A slower moving strong thunderstorm has developed over Douglas County and may produce brief heavy rainfall as it tracks over northern areas of the County. This storm is moving to the E at around 10-15mph and may result in excessive runoff roadways. This storm will also contain gusty winds in excess of 50mph and possibly hail. This storm should exit the County ahead of 8:30 PM.

STORM RAINFALL POTENTIAL AND DURATION: Moderate to strong thunderstorms will have the potential to produce 0.3-0.8" in 10-30 minutes.

County	Message	Valid Times	Prime Time
Douglas County	1	Current TO 900 PM	Current TO 830 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 900 PM MON	0.1" (60%) to 0.3" (20%) to 0.8" (10%)	LOW
Arapahoe	Current TO 900 PM MON	0.1" (60%) to 0.3" (20%) to 0.8" (10%)	LOW
Boulder	Current TO 900 PM MON	0.1" (25%) to 0.3" (10%) to 0.8" (5%)	NONE
Broomfield	Current TO 900 PM MON	0.1" (25%) to 0.3" (10%) to 0.8" (5%)	NONE
Denver	Current TO 900 PM MON	0.1" (25%) to 0.3" (10%) to 0.8" (5%)	NONE
Douglas	Current TO 900 PM MON	0.1" (90%) to 0.3" (60%) to 0.8" (30%)	ISSUED
Jefferson	Current TO 900 PM MON	0.1" (25%) to 0.3" (10%) to 0.8" (5%)	NONE
Foothills above 6500ft
Boulder	Current TO 900 PM MON	0.1" (25%) to 0.3" (10%) to 0.8" (5%)	NONE
Douglas	Current TO 900 PM MON	0.1" (80%) to 0.3" (40%) to 0.8" (20%)	ISSUED
Jefferson	Current TO 900 PM MON	0.1" (25%) to 0.3" (10%) to 0.8" (5%)	NONE

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.