Time: 903 AM Thu August 15, 2024 Forecaster: Laura Smith ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- Slight chance for thunderstorm activity today Drier air aloft will move over Colorado today, resulting in decreased thunderstorm activity across the District. Afternoon temperatures will be in the 80s with dewpoints in the low 40s and precipitable water (PWAT) values around 0.70”. These conditions will support a slight chance for isolated afternoon to evening storms capable of producing light rainfall. Storm motions will be from west to east around 25 mph. STORM RAINFALL POTENTIAL AND DURATION: Thunderstorms today have the potential to produce between a Trace to 0.10” in 10-30 minutes. WORST CASE SCENARIO: A strong thunderstorm may be capable of producing 0.20” or more in 30 minutes or less. A LOOK AHEAD: Ridge building continues across the Intermountain west, supporting hotter and dryer weather through the end of the week. Warmer conditions are expected Friday with highs in the 90s and slight chances for isolated afternoon to evening thunderstorms. Saturday will be similar, with warm temperatures and isolated showers. Meaningful precipitation is not expected again until Sunday when a shift in the upper level jet will begin transporting better moisture into the region. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.1" (5%) NONE Arapahoe 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.1" (5%) NONE Boulder 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.1" (5%) NONE Broomfield 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.1" (5%) NONE Denver 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.1" (5%) NONE Douglas 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.1" (5%) NONE Jefferson 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.1" (5%) NONE Foothills above 6500ft       Boulder 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.1" (5%) NONE Douglas 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.1" (5%) NONE Jefferson 200 PM TO 1000 PM Trace (15%) to 0.05" (10%) to 0.1" (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]