Flash Flood Prediction Program

Widespread persistent precipitation continues today and tonight as easterly upslope moisture surges into the region. Temperatures today will only reach the upper 30s to low 40s across the District, inhibiting thunderstorm activity. Persistent rainfall throughout the day today will result in elevated streams and creeks. Rain across lower elevations will continue into the evening before decreasing in intensity overnight. Areas above 6000 ft (foothills) can expect snow throughout the day and tonight.

STORM RAINFALL POTENTIAL AND DURATION: Non-thunderstorm rain showers will have the potential produce rainfall rates up to 0.10"-0.50" total in 30-60 minutes.

WORST CASE SCENARIO: In the unlikely event thunderstorms develop, they could potentially produce up to 1.00" total in 60 minutes.

A LOOK AHEAD: Tomorrow, isolated to scattered showers and thunderstorms are possible due to return flow from this system. Minimal precipitation is expected. Temperatures will reach the upper 50s to low 60s with winds from the southwest at 5-15 mph. Precipitation will fully conclude late Sunday night as this impressive system meanders east. Temperatures will rebound quickly on Monday with afternoon highs reaching the upper 60s to low 70s under mostly sunny skies.

Location	Prime Time	30-Minute Rainfall and % Probability	Message Potential
Plains
Adams	Current TO 1159 AM SAT	0.1" (90%) to 0.25" (50%) to 0.5" (10%)	LOW
Arapahoe	Current TO 1159 AM SAT	0.1" (90%) to 0.25" (50%) to 0.5" (10%)	LOW
Boulder	Current TO 1159 AM SAT	0.1" (90%) to 0.25" (50%) to 0.5" (10%)	LOW
Broomfield	Current TO 1159 AM SAT	0.1" (90%) to 0.25" (50%) to 0.5" (10%)	LOW
Denver	Current TO 1159 AM SAT	0.1" (90%) to 0.25" (50%) to 0.5" (10%)	LOW
Douglas	Current TO 1159 AM SAT	0.1" (90%) to 0.25" (50%) to 0.5" (10%)	LOW
Jefferson	Current TO 1159 AM SAT	0.1" (90%) to 0.25" (50%) to 0.5" (10%)	LOW
Foothills above 6500ft
Boulder	Current TO 1159 AM SAT	0.1" (90%) to 0.2" (50%) to 0.3" (10%)	NONE
Douglas	Current TO 1159 AM SAT	0.1" (90%) to 0.2" (50%) to 0.3" (10%)	NONE
Jefferson	Current TO 1159 AM SAT	0.1" (90%) to 0.2" (50%) to 0.3" (10%)	NONE

MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.