Time: 306 PM Wed September 4, 2024 Forecaster: Aaron O'Brien

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1’S HAVE BEEN ISSUED EFFECTIVE UNTIL 10:00 PM
A second wave of storms have started to initiate along the foothills and will start moving into the District over the next hour. Temperatures today reached the low 80s, combined with dew points in the low to mid 40s, storms today could potentially produce light to moderate rainfall.

Storm motions will be from west-southwest to east-northeast, generally between 15-20 mph with some possible erratic storm movement possibly along outflow boundaries.

One main round of showers and thunderstorms with light to moderate rainfall is expected today, with weaker and isolated storms possible by sundown and into the night. A slight chance for a few overnight showers/thunderstorms as temperatures drop into the low 60s on the plains with mid to upper 50s along the foothills.
STORM RAINFALL POTENTIAL AND DURATION: Showers and thunderstorms today have the potential to produce between a 0.25-0.75” in 10-30 minutes.

WORST CASE SCENARIO: A strong thunderstorm, or thunderstorm clusters, have the potential to produce up to 1.25” 60 minutes or less.

County Message Valid Times Prime Time
the City of Aurora 1 Current TO 1000 PM Current TO 900 PM
Arapahoe County 1 Current TO 1000 PM Current TO 900 PM
DIA 1 Current TO 1000 PM Current TO 900 PM
Denver County 1 Current TO 1000 PM Current TO 900 PM
Adams County 1 Current TO 1000 PM Current TO 900 PM
Douglas County 1 Current TO 1000 PM Current TO 900 PM
Broomfield County 1 Current TO 1000 PM Current TO 900 PM
Jefferson County 1 Current TO 1000 PM Current TO 900 PM
Boulder County 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 1000 PM WED
0.25" (70%) to 0.5" (50%) to 0.75" (30%) ISSUED
Arapahoe Current TO 1000 PM WED
0.25" (70%) to 0.5" (50%) to 0.75" (30%) ISSUED
Boulder Current TO 1000 PM WED
0.25" (70%) to 0.5" (50%) to 0.75" (30%) ISSUED
Broomfield Current TO 1000 PM WED
0.25" (70%) to 0.5" (50%) to 0.75" (30%) ISSUED
Denver Current TO 1000 PM WED
0.25" (70%) to 0.5" (50%) to 0.75" (30%) ISSUED
Douglas Current TO 1000 PM WED
0.25" (70%) to 0.5" (50%) to 0.75" (30%) ISSUED
Jefferson Current TO 1000 PM WED
0.25" (70%) to 0.5" (50%) to 0.75" (30%) ISSUED
Foothills above 6500ft      
Boulder Current TO 1000 PM WED
0.25" (70%) to 0.5" (50%) to 0.75" (30%) ISSUED
Douglas Current TO 1000 PM WED
0.25" (70%) to 0.5" (50%) to 0.75" (30%) ISSUED
Jefferson Current TO 1000 PM WED
0.25" (70%) to 0.5" (50%) to 0.75" (30%) ISSUED
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/