Time: 956 AM Wed May 15, 2024 Forecaster: Laura Smith ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- Scattered Showers and Thunderstorms this Afternoon and Evening Upper level troughing is in place across the Intermountain West following the cold front this morning. Afternoon highs will reach the upper 60s to low 70s, dew points around 40°F, and precipitable water (PWAT) values between 0.55 and 0.65 inches. This pattern will support cooler, unsettled weather across the District today and tonight. Chances for scattered to widespread showers and thunderstorms capable of producing more meaningful precipitation improve this afternoon and evening. A few isolated light showers may linger into the overnight hours gradually clearing by the early morning hours. STORM RAINFALL POTENTIAL AND DURATION: Typical showers and thunderstorms will produce a trace to 0.25” total rainfall 15-30 minutes. WORST CASE SCENARIO: A moderate to strong thunderstorm will have the potential to produce up to 0.50” total rainfall total in 10-30 minutes. A LOOK AHEAD: Temperatures will rebound on Thursday with afternoon highs in the mid 70s and dew points low 30s. Showers and thunderstorms are possible Wednesday afternoon and evening followed by clearing skies overnight. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 100 PM TO 800 PM 0.05" (85%) to 0.25" (50%) to 0.5" (15%) LOW Arapahoe 100 PM TO 900 PM 0.05" (85%) to 0.25" (50%) to 0.5" (15%) LOW Boulder 100 PM TO 800 PM 0.05" (85%) to 0.25" (50%) to 0.5" (15%) LOW Broomfield 100 PM TO 800 PM 0.05" (85%) to 0.25" (50%) to 0.5" (15%) LOW Denver 100 PM TO 900 PM 0.05" (85%) to 0.25" (50%) to 0.5" (15%) LOW Douglas 100 PM TO 900 PM 0.05" (85%) to 0.25" (50%) to 0.5" (15%) LOW Jefferson 100 PM TO 900 PM 0.05" (85%) to 0.25" (50%) to 0.5" (15%) LOW Foothills above 6500ft       Boulder 1200 PM TO 800 PM 0.05" (90%) to 0.25" (60%) to 0.5" (30%) LOW Douglas 1200 PM TO 900 PM 0.05" (90%) to 0.25" (60%) to 0.5" (30%) LOW Jefferson 1200 PM TO 900 PM 0.05" (90%) to 0.25" (60%) to 0.5" (30%) LOW MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS. MHFD Flood Prediction Center: 303-458-0789    F2P2 Website [http://udfcd.org/Flash+Flood+Prediction+Program]