Flash Flood Prediction Program

Message 1’s will be allowed to expire at 9pm tonight as the threat of heavy rainfall has come to an end.

Cooler temperatures helped limit storms for some locations today. Mainly areas north of I-70 where better rainfall this morning and more persistent cloud cover deterred any meaning development. Areas where the sun peaked through this afternoon, mostly south of I-70, received a moderate to strong round of storms this afternoon and early evening.

Another late shower developed over the Chatfield area and is dissipating as it moves E/SE and out of the District. This will result in a few light showers remaining for the southeastern portion of the District with the rest of the District remaining mostly dry throughout the rest of the evening.

A few off and on light to briefly moderate showers could develop through tomorrow morning, with minimal additional precipitation expected. Overnight will be cloudy with some areas of fog/drizzle possible in the morning hours tomorrow. Temperatures will drop into the upper 50s for the plains with low to mid 50s along the foothills.

STORM RAINFALL POTENTIAL AND DURATION: Typical showers through tomorrow morning will produce a trace-0.10" total in 10-30 minutes.

WORST CASE SCENARIO: A moderate to strong shower will produce rainfall rates of 0.10”-0.30” total in 10-30 minutes.

County	Message	Valid Times	Prime Time
Boulder County	1	Current TO 900 PM	Current TO 830 PM
Jefferson County	1	Current TO 900 PM	Current TO 830 PM
Broomfield County	1	Current TO 900 PM	Current TO 830 PM
Douglas County	1	Current TO 900 PM	Current TO 830 PM
Adams County	1	Current TO 900 PM	Current TO 830 PM
Denver County	1	Current TO 900 PM	Current TO 830 PM
DIA	1	Current TO 900 PM	Current TO 830 PM
Arapahoe County	1	Current TO 900 PM	Current TO 830 PM
the City of Aurora	1	Current TO 900 PM	Current TO 830 PM
Arvada	1	Current TO 900 PM	Current TO 830 PM
Wheat Ridge	1	Current TO 900 PM	Current TO 830 PM
Lakewood	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 AM FRI	Trace (30%) to 0.1" (15%) to 0.3" (5%)	NONE
Arapahoe	Current TO 900 AM FRI	Trace (30%) to 0.1" (15%) to 0.3" (5%)	NONE
Boulder	Current TO 900 AM FRI	Trace (30%) to 0.1" (15%) to 0.3" (5%)	NONE
Broomfield	Current TO 900 AM FRI	Trace (30%) to 0.1" (15%) to 0.3" (5%)	NONE
Denver	Current TO 900 AM FRI	Trace (30%) to 0.1" (15%) to 0.3" (5%)	NONE
Douglas	Current TO 900 AM FRI	Trace (30%) to 0.1" (15%) to 0.3" (5%)	NONE
Jefferson	Current TO 900 AM FRI	Trace (30%) to 0.1" (15%) to 0.3" (5%)	NONE
Foothills above 6500ft
Boulder	Current TO 900 AM FRI	Trace (30%) to 0.1" (15%) to 0.3" (5%)	NONE
Douglas	Current TO 900 AM FRI	Trace (30%) to 0.1" (15%) to 0.3" (5%)	NONE
Jefferson	Current TO 900 AM FRI	Trace (30%) to 0.1" (15%) to 0.3" (5%)	NONE

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.