Flash Flood Prediction Program

Time: 924 AM Mon June 3, 2024 Forecaster: Laura Smith ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- Slight chances for isolated afternoon to evening showers and thunderstorms. High pressure ridging will begin building over the four corners region today, supporting hot and mostly dry conditions across the Front Range Urban Corridor throughout Friday. Today, skies will be partly cloudy with afternoon highs climbing into the upper 80s to low 90s, dew points in the mid 30s, and precipitable water (PWAT) values around 0.65”. A weak upper-level perturbation will support a slight chance for isolated showers and thunderstorms this afternoon and evening. Quick storm motions around 20-25 mph, moving west to east, will result in minimal rainfall amounts. Storms will begin clearing by mid evening, with precipitation concluding by the late evening. STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce up to 0.10” total in 15-30 minutes. WORST CASE SCENARIO: There is a slight chance a stronger thunderstorm will produce briefly moderate rainfall up to 0.15” of rainfall in up to 10-15 minutes. A LOOK AHEAD: Tomorrow will be partly sunny with highs in the mid-80s. Westerly upper-level flow will inhibit thunderstorm development, supporting dry and breezy conditions with wind gusts up to 30 mph. Winds will gradually subside after sunset with calm conditions prevailing overnight. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.15" (5%) NONE Arapahoe 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.15" (5%) NONE Boulder 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.15" (5%) NONE Broomfield 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.15" (5%) NONE Denver 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.15" (5%) NONE Douglas 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.15" (5%) NONE Jefferson 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.15" (5%) NONE Foothills above 6500ft       Boulder 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.15" (5%) NONE Douglas 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.15" (5%) NONE Jefferson 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.15" (5%) NONE MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS. MHFD Flood Prediction Center: 303-458-0789    F2P2 Website [http://udfcd.org/Flash+Flood+Prediction+Program]