Time: 601 PM Fri August 23, 2024 Forecaster: Justin Brooks

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1’S WILL BE ALLOWED TO EXPIRE AT 7:00 PM
Message 1’s will be allowed to expire at 7:00pm as the threat of heavy rainfall has come to an end.

A round of moderate to heavy showers impacted northern portions of the District this afternoon and have since moved well onto the eastern plains. Breezy and dry conditions are expected through the rest of the evening. A slight chance for an additional round of showers late this evening/overnight, likely bringing minimal additional rainfall across the District.

Overnight temperatures will decrease into the low 60s for the plains with mid to upper 50s along the foothills. Slightly drier conditions move into the region tomorrow, however, a continued chance for a few late afternoon and early evening showers/thunderstorms. High temperatures tomorrow will also be similar, in the low 90s.
STORM RAINFALL POTENTIAL AND DURATION: A weak to moderate shower will produce a trace to 0.20” total in 10-30 minutes.

WORST CASE SCENARIO: A moderate to strong shower/thunderstorm will have the potential to produce 0.20”-0.40” total in 10-30 minutes.

County Message Valid Times Prime Time
Boulder County 1 Current TO 700 PM Current TO 630 PM
Jefferson County 1 Current TO 700 PM Current TO 630 PM
Broomfield County 1 Current TO 700 PM Current TO 630 PM
Douglas County 1 Current TO 700 PM Current TO 630 PM
Adams County 1 Current TO 700 PM Current TO 630 PM
Denver County 1 Current TO 700 PM Current TO 630 PM
DIA 1 Current TO 700 PM Current TO 630 PM
Arapahoe County 1 Current TO 700 PM Current TO 630 PM
the City of Aurora 1 Current TO 700 PM Current TO 630 PM
Arvada 1 Current TO 700 PM Current TO 630 PM
Wheat Ridge 1 Current TO 700 PM Current TO 630 PM
Lakewood 1 Current TO 700 PM Current TO 630 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 300 AM SAT
Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE
Arapahoe Current TO 300 AM SAT
Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE
Boulder Current TO 300 AM SAT
Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE
Broomfield Current TO 300 AM SAT
Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE
Denver Current TO 300 AM SAT
Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE
Douglas Current TO 300 AM SAT
Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE
Jefferson Current TO 300 AM SAT
Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE
Foothills above 6500ft      
Boulder Current TO 300 AM SAT
Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE
Douglas Current TO 300 AM SAT
Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE
Jefferson Current TO 300 AM SAT
Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/