Time: 906 AM Sun August 27, 2023 Forecaster: Laura Smith

Heavy Precipitation Outlook
Flash Flood Prediction Program

HOT SUMMERTIME CONDITIONS WITH SCATTERED AFTERNOON AND EVENING THUNDERSTORMS
As the remnants of a tropical system continue to shift east, showers and thunderstorms along the Front Range Urban Corridor are expected this afternoon and evening. Scattered storm activity is likely across the Plains today with afternoon temperatures reaching the mid to upper 80s, and dew points in the low 50s. Storms are expected to move south-southeast around 20-25 mph. Quick storm motions will help limit point rainfall amounts. Thunderstorms are expected to continue this evening, then move east overnight.
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: Training thunderstorms have the potential to produce 0.50” to 0.75” total in 30-60 minutes.

A LOOK AHEAD: Another wave of afternoon storms is possible tomorrow but may be limited by cooler temperatures in the mid 70s. We will continue to monitor these conditions as they develop. Looking ahead, upper-level winds will shift Tuesday, transporting much dryer and warmer conditions into the state. The remainder of the week is expected to be dry and hot, with afternoon temperatures climbing into the 90s under sunny skies.

Location Prime Time 30-Minute Rainfall
and % Probability
Message
Potential
Plains      
Adams 100 PM TO 1100 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Arapahoe 100 PM TO 1100 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Boulder 100 PM TO 1100 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Broomfield 100 PM TO 1100 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Denver 100 PM TO 1100 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Douglas 100 PM TO 1100 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Jefferson 100 PM TO 1100 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Foothills above 6500ft      
Boulder 100 PM TO 1100 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Douglas 100 PM TO 1100 PM
Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW
Jefferson 100 PM TO 1100 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/