Flash Flood Prediction Program

Message 2’s will be allowed to expire at 3am as the threat of heavy rainfall has come to an end.

A few lingering rain showers will be possible over the next few hours before showers gradually clear before daybreak. Temperatures have dropped into the low to mid 50’s on the plains and will only decrease a few degrees before sunrise.

Similar conditions remain in place tomorrow with another good chance for heavy rainfall along the I-25 corridor with a slight chance for severe weather, favoring areas along and east of I-25 at this time.

STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers will produce a trace to 0.1” total, in 10-30 minutes. A Moderate rain showers will produce 0.1-0.3” total, in 10-30 minutes.

WORST CASE SCENARIO: A thunderstorm, or training or rain showers has the potential to produce 0.3-0.8” total, in up to 60 minutes.

County	Message	Valid Times	Prime Time
Adams County	2	Current TO 300 AM	Current TO 200 AM
Douglas County	2	Current TO 300 AM	Current TO 200 AM
Broomfield County	2	Current TO 300 AM	Current TO 200 AM
Jefferson County	2	Current TO 300 AM	Current TO 200 AM
Boulder County	2	Current TO 300 AM	Current TO 200 AM
Denver County	2	Current TO 300 AM	Current TO 200 AM
DIA	2	Current TO 300 AM	Current TO 200 AM
Arapahoe County	2	Current TO 300 AM	Current TO 200 AM
the City of Aurora	2	Current TO 300 AM	Current TO 200 AM
Arvada	2	Current TO 300 AM	Current TO 200 AM
Wheat Ridge	2	Current TO 300 AM	Current TO 200 AM
Lakewood	2	Current TO 300 AM	Current TO 200 AM

County-specific Quantitative Precipitation Outlook	Precipitation Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 600 AM MON	Trace (40%) to 0.1" (20%) to 0.3" (10%)	NONE
Arapahoe	Current TO 600 AM MON	Trace (40%) to 0.1" (20%) to 0.3" (10%)	NONE
Boulder	Current TO 600 AM MON	Trace (40%) to 0.1" (20%) to 0.3" (10%)	NONE
Broomfield	Current TO 600 AM MON	Trace (40%) to 0.1" (20%) to 0.3" (10%)	NONE
Denver	Current TO 600 AM MON	Trace (40%) to 0.1" (20%) to 0.3" (10%)	NONE
Douglas	Current TO 600 AM MON	Trace (40%) to 0.1" (20%) to 0.3" (10%)	NONE
Jefferson	Current TO 600 AM MON	Trace (40%) to 0.1" (20%) to 0.3" (10%)	NONE
Foothills above 6500ft
Boulder	Current TO 600 AM MON	Trace (50%) to 0.1" (25%) to 0.3" (10%)	NONE
Douglas	Current TO 600 AM MON	Trace (50%) to 0.1" (25%) to 0.3" (10%)	NONE
Jefferson	Current TO 600 AM MON	Trace (50%) to 0.1" (25%) to 0.3" (10%)	NONE

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.