Time: 941 AM Fri August 23, 2024 Forecaster: Laura Smith

Heavy Precipitation Outlook
Flash Flood Prediction Program

Isolated to Scattered Afternoon and Evening Showers and Thunderstorms
High pressure ridging continues to transport Monsoonal moisture into the Four-Corners region, supporting isolated to scattered storms this week and through the weekend. Today, a trough moving over the west coast will amplify the ridge over the Central Plains, creating a capping inversion across the District. This inversion will inhibit storm development until the mid to late afternoon, resulting in isolated to scattered storm coverage. High temperatures will be around 90°F, with dewpoints in the low 50s and precipitable water (PWAT) values around 1.05”. Storm motions will be from west to east around 20-25 mph. Quick storm motions will help limit point rainfall amounts.
STORM RAINFALL POTENTIAL AND DURATION: Showers and thunderstorms today have the potential to produce between 0.30”-0.70” in 10-30 minutes.

WORST CASE SCENARIO: A strong thunderstorm, or slower moving storm, may be capable of producing 1.50” or more in 30-60 minutes.

A LOOK AHEAD: Saturday will be warm with highs around 90°F once again and slight chances for isolated showers and thunderstorms. Very little change to this pattern is expected on Sunday as highs hover around 90°F with chances for isolated showers and thunderstorms.

Location Prime Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams 200 PM TO 1000 PM
0.3" (70%) to 0.5" (50%) to 0.7" (30%) LOW
Arapahoe 200 PM TO 1000 PM
0.3" (70%) to 0.5" (50%) to 0.7" (30%) LOW
Boulder 200 PM TO 1000 PM
0.3" (70%) to 0.5" (50%) to 0.7" (30%) LOW
Broomfield 200 PM TO 1000 PM
0.3" (70%) to 0.5" (50%) to 0.7" (30%) LOW
Denver 200 PM TO 1000 PM
0.3" (70%) to 0.5" (50%) to 0.7" (30%) LOW
Douglas 200 PM TO 1000 PM
0.3" (70%) to 0.5" (50%) to 0.7" (30%) LOW
Jefferson 200 PM TO 1000 PM
0.3" (70%) to 0.5" (50%) to 0.7" (30%) LOW
Foothills above 6500ft      
Boulder 200 PM TO 1000 PM
0.3" (70%) to 0.5" (50%) to 0.7" (30%) LOW
Douglas 200 PM TO 1000 PM
0.3" (70%) to 0.5" (50%) to 0.7" (30%) LOW
Jefferson 200 PM TO 1000 PM
0.3" (70%) to 0.5" (50%) to 0.7" (30%) LOW
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/