Time: 1016 PM Sat July 20, 2024 Forecaster: Aaron O

Internal Message Status
Flash Flood Prediction Program

MESSAGE 1’S WILL BE ALLOWED TO EXPIRE AT 11:00 PM
Message 1’s will be allowed to expire at 11pm as the threat of heavy rainfall has come to an end.

A few lingering showers persist over the District at this time. These showers will continue over the next couple of hours before clearing out through the overnight. Temperatures will drop into the low 60s by daybreak tomorrow for the plains with mid to upper 50s along the foothills.

With minimal changes to the upper level flow, moisture, and cooler temperatures overall, storms will likely initiate tomorrow afternoon with a few isolated storms into the evening hours. Storms should be less intense than today due to lower daytime temperatures; however, at least a LOW chance for Messages tomorrow with excess available moisture at the surface.
STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce a trace-0.10” total in 10-30 minutes. A moderate shower will produce 0.10-0.20” total in 10-30 minutes.

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

County Message Valid Times Prime Time
the City of Aurora 1 Current TO 1100 PM Current TO 1100 PM
Arapahoe County 1 Current TO 1100 PM Current TO 1100 PM
DIA 1 Current TO 1100 PM Current TO 1100 PM
Denver County 1 Current TO 1100 PM Current TO 1100 PM
Adams County 1 Current TO 1100 PM Current TO 1100 PM
Douglas County 1 Current TO 1100 PM Current TO 1100 PM
Broomfield County 1 Current TO 1100 PM Current TO 1100 PM
Jefferson County 1 Current TO 1100 PM Current TO 1100 PM
Boulder County 1 Current TO 1100 PM Current TO 1100 PM
Arvada 1 Current TO 1100 PM Current TO 1100 PM
Wheat Ridge 1 Current TO 1100 PM Current TO 1100 PM
Lakewood 1 Current TO 1100 PM Current TO 1100 PM

County-specific Quantitative
Precipitation Outlook
Precipitation Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Arapahoe Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Boulder Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Broomfield Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Denver Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Douglas Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Jefferson Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Foothills above 6500ft      
Boulder Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Douglas Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
Jefferson Current TO 1100 PM SAT
Trace (40%) to 0.1" (20%) to 0.2" (10%) NONE
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/