Time: 918 PM Sun July 21, 2024 Forecaster: Justin Brooks

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1’S WILL BE ALLOWED TO EXPIRE AT 10:00 PM
Message 1’s will be allowed to expire at 10pm as the threat of heavy rainfall has come to an end.

After a couple of rounds of showers and thunderstorms, only a few isolated showers will persist over the District at this time. These showers will slowly taper off from NW to SE over the next couple of hours with skies gradually clearing through the rest of the overnight.

Mild and dry conditions are expected overnight and into daybreak tomorrow. Temperatures will drop into the upper 50s for the plains with low 50s along the foothills. Tomorrow will start to dry out across the Front Range with only a few isolated showers and possibly a high-based thunderstorms or two in the late afternoon/early evening.
STORM RAINFALL POTENTIAL AND DURATION: Minimal additional precipitation is expected tonight and through the overnight between a trace and 0.10” total in 10-30 minutes.

WORST CASE SCENARIO: A stronger shower/thunderstorm develops will have the potential to produce 0.10”-0.25” total in 10-30 minutes.

County Message Valid Times Prime Time
Boulder County 1 Current TO 1000 PM Current TO 1000 PM
Jefferson County 1 Current TO 1000 PM Current TO 1000 PM
Broomfield County 1 Current TO 1000 PM Current TO 1000 PM
Douglas County 1 Current TO 1000 PM Current TO 1000 PM
Adams County 1 Current TO 1000 PM Current TO 1000 PM
Denver County 1 Current TO 1000 PM Current TO 1000 PM
DIA 1 Current TO 1000 PM Current TO 1000 PM
Arapahoe County 1 Current TO 1000 PM Current TO 1000 PM
the City of Aurora 1 Current TO 1000 PM Current TO 1000 PM
Arvada 1 Current TO 1000 PM Current TO 1000 PM
Wheat Ridge 1 Current TO 1000 PM Current TO 1000 PM
Lakewood 1 Current TO 1000 PM Current TO 1000 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1100 PM SUN
Trace (10%) to 0.1" (5%) to 0.25" (0%) NONE
Arapahoe Current TO 1100 PM SUN
Trace (20%) to 0.1" (10%) to 0.25" (5%) NONE
Boulder Current TO 1100 PM SUN
Trace (10%) to 0.1" (5%) to 0.25" (0%) NONE
Broomfield Current TO 1100 PM SUN
Trace (10%) to 0.1" (5%) to 0.25" (0%) NONE
Denver Current TO 1100 PM SUN
Trace (20%) to 0.1" (10%) to 0.25" (5%) NONE
Douglas Current TO 1100 PM SUN
Trace (20%) to 0.1" (10%) to 0.25" (5%) NONE
Jefferson Current TO 1100 PM SUN
Trace (10%) to 0.1" (5%) to 0.25" (0%) NONE
Foothills above 6500ft      
Boulder Current TO 1100 PM SUN
Trace (10%) to 0.1" (5%) to 0.25" (0%) NONE
Douglas Current TO 1100 PM SUN
Trace (20%) to 0.1" (10%) to 0.25" (5%) NONE
Jefferson Current TO 1100 PM SUN
Trace (10%) to 0.1" (5%) to 0.25" (0%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/