Flash Flood Prediction Program

Time: 930 AM Sun June 2, 2024 Forecaster: Justin Brooks ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- Hot today with a slight chance for high based showers/isolated thunderstorms this afternoon and early evening. West to southwesterly flow aloft will continue today, leading to mostly dry conditions this afternoon and early evening. Dew points will likely mix out during the day today, dropping to around 30 degrees, effectively limiting precipitation during the day today as most rainfall will struggle to reach the surface. Any storm activity will likely remain north of the I-70 corridor, with the best chance between 1-7pm. Skies will gradually clear later this evening with dry conditions expected through the overnight as temperatures drop into the 50s on the plains with upper 40s to around 50 degrees along the foothills. STORM RAINFALL POTENTIAL AND DURATION: Typical showers and isolated thunderstorms will produce a T-0.05” total in 10-30 minutes. A moderate shower/thunderstorm will produce 0.05-0.20” total in 10-30 minutes. WORST CASE SCENARIO: A stronger thunderstorm, or training of thunderstorm cells will have the potential to produce up to 0.4” total in under 30 minutes. A LOOK AHEAD: Temperatures tomorrow will increase slightly into the upper 80s to low 90s in the afternoon. Another slight chance for a few scattered high-based showers/isolated thunderstorms during the afternoon and early evening, once again, most if not all precipitation will likely struggle to reach the surface. Tuesday will likely dry out completely as high temperatures remain in the upper 80s to low 90s. Even warmer Wednesday as high temperatures reach the low 90s under sunny skies. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 100 PM TO 700 PM Trace (20%) to 0.05" (10%) to 0.2" (5%) NONE Arapahoe 100 PM TO 700 PM Trace (20%) to 0.05" (10%) to 0.2" (5%) NONE Boulder 100 PM TO 700 PM Trace (20%) to 0.05" (10%) to 0.2" (5%) NONE Broomfield 100 PM TO 700 PM Trace (20%) to 0.05" (10%) to 0.2" (5%) NONE Denver 100 PM TO 700 PM Trace (20%) to 0.05" (10%) to 0.2" (5%) NONE Douglas 100 PM TO 700 PM Trace (15%) to 0.05" (10%) to 0.2" (5%) NONE Jefferson 100 PM TO 700 PM Trace (15%) to 0.05" (10%) to 0.2" (5%) NONE Foothills above 6500ft       Boulder 100 PM TO 700 PM Trace (20%) to 0.05" (10%) to 0.2" (5%) NONE Douglas 100 PM TO 700 PM Trace (15%) to 0.05" (10%) to 0.2" (5%) NONE Jefferson 100 PM TO 700 PM Trace (15%) to 0.05" (10%) to 0.2" (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]