Flash Flood Prediction Program

Message 1’s will be allowed to expire at 10:00pm as the threat of heavy rain has come to an end.

Any additional rainfall that may occur overnight will remain weak and uneventful. Storm motions continue to be southwest to northeast at 15-20 mph limiting point rainfall amounts. Atmospheric conditions will remain capped through the overnight hours, supporting little to no additional chances for precipitation.

Overnight lows will drop to the low 60s to upper 50s for the plains and mid to low 50s for the foothills.

STORM RAINFALL POTENTIAL AND DURATION: Heavy rainfall is not expected for the remainder of the evening and during the overnight hours.

WORST CASE SCENARIO: In the event of an isolated shower or thunderstorm develops, 0.10”-0.30” total is possible in 10-30 minutes.

County	Message	Valid Times	Prime Time
Boulder County	1	Current TO 1000 PM	Current TO 900 PM
Jefferson County	1	Current TO 1000 PM	Current TO 900 PM
Broomfield County	1	Current TO 1000 PM	Current TO 900 PM
Douglas County	1	Current TO 1000 PM	Current TO 900 PM
Adams County	1	Current TO 1000 PM	Current TO 900 PM
Denver County	1	Current TO 1000 PM	Current TO 900 PM
DIA	1	Current TO 1000 PM	Current TO 900 PM
Arapahoe County	1	Current TO 1000 PM	Current TO 900 PM
the City of Aurora	1	Current TO 1000 PM	Current TO 900 PM
Arvada	1	Current TO 1000 PM	Current TO 900 PM
Wheat Ridge	1	Current TO 1000 PM	Current TO 900 PM
Lakewood	1	Current TO 1000 PM	Current TO 900 PM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 1100 PM THU	Trace (25%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Arapahoe	Current TO 1100 PM THU	Trace (25%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Boulder	Current TO 1100 PM THU	Trace (25%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Broomfield	Current TO 1100 PM THU	Trace (25%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Denver	Current TO 1100 PM THU	Trace (25%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Douglas	Current TO 1100 PM THU	Trace (25%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Jefferson	Current TO 1100 PM THU	Trace (25%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Foothills above 6500ft
Boulder	Current TO 1100 PM THU	Trace (25%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Douglas	Current TO 1100 PM THU	Trace (25%) to 0.1" (10%) to 0.3" (5%)	ISSUED
Jefferson	Current TO 1100 PM THU	Trace (25%) to 0.1" (10%) to 0.3" (5%)	ISSUED

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.