Time: 848 AM Sun August 13, 2023 Forecaster: Laura Smith

Heavy Precipitation Outlook
Flash Flood Prediction Program

ISOLATED AFTERNOON SHOWERS AND THUNDERSTORMS
An upper-level disturbance and its associated cold front will work its way across the High Plains this morning, followed by a chance for scattered showers and storms. Afternoon temperatures will reach the upper 70s to low 80s, with dew points in the upper 40s to around 50°F. Atmospheric conditions today are expected to remain stable, limiting storm development across the District.
STORM RAINFALL POTENTIAL AND DURATION: Typical showers will be weak, producing rainfall of TR-0.25” total in 10-30 minutes. Stronger storms have the potential to produce heavy rainfall of 0.25” to 0.50” total in 10-30 minutes.

WORST CASE SCENARIO: A strong thunderstorm may have the potential to produce 0.50” to 1.00” in 60 minutes.

A LOOK AHEAD: Tomorrow morning will be mostly sunny followed by highs in the upper 70s to low 80s and a slight chance for isolated afternoon showers mainly over the foothills. A drying pattern will begin on Tuesday as upper-level ridging expands into the Intermountain West. Afternoon temperatures will reach the upper 80s to low 90s under sunny skies. On Wednesday, high temperatures will climb into the low to mid 90s with clear skies.

Location Prime Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams 200 PM TO 800 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Arapahoe 200 PM TO 800 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Boulder 200 PM TO 800 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Broomfield 200 PM TO 800 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Denver 200 PM TO 800 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Douglas 200 PM TO 800 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Jefferson 200 PM TO 800 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Foothills above 6500ft      
Boulder 1200 PM TO 800 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Douglas 1200 PM TO 800 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Jefferson 1200 PM TO 800 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS.
https://f2p2.udfcd.org/generator/