Time: 955 AM Sat May 25, 2024 Forecaster: Laura Smith ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- Isolated to Scattered Afternoon and Evening Showers and Thunderstorms Skies will be partly to mostly sunny this morning as the arrival of an upper-level trough improves atmospheric moisture across the region. Afternoon temperatures will reach the mid to upper 70s, dew points in the mid 30s, and precipitable water (PWAT) vales up to 0.50”. These conditions will support isolated showers and thunderstorms capable of producing light rainfall during the afternoon and evening. Storm motions will be from the west-southwest to east-northeast around 15-20 mph. Skies will gradually clear overnight with dry conditions expected tomorrow morning. STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce a trace to 0.05” total in 10-30 minutes. A moderate shower/thunderstorm will produce up to 0.10” in 10-30 minutes. WORST CASE SCENARIO: A strong thunderstorm, or training of thunderstorms, may be capable of producing up to 0.20” of rainfall in up to 30 minutes. A LOOK AHEAD: Sunday morning will be sunny with seasonal temperatures prevailing across the District. Gusty downslope conditions will limit storm development across the region, resulting in dry conditions throughout the day and overnight into Monday. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 200 PM TO 1000 PM Trace (45%) to 0.05" (35%) to 0.1" (25%) NONE Arapahoe 200 PM TO 1000 PM Trace (45%) to 0.05" (35%) to 0.1" (25%) NONE Boulder 200 PM TO 1000 PM Trace (45%) to 0.05" (35%) to 0.1" (25%) NONE Broomfield 200 PM TO 1000 PM Trace (45%) to 0.05" (35%) to 0.1" (25%) NONE Denver 200 PM TO 1000 PM Trace (45%) to 0.05" (35%) to 0.1" (25%) NONE Douglas 200 PM TO 1000 PM Trace (45%) to 0.05" (35%) to 0.1" (25%) NONE Jefferson 200 PM TO 1000 PM Trace (45%) to 0.05" (35%) to 0.1" (25%) NONE Foothills above 6500ft       Boulder 100 PM TO 900 PM Trace (55%) to 0.05" (45%) to 0.1" (35%) NONE Douglas 100 PM TO 900 PM Trace (55%) to 0.05" (45%) to 0.1" (35%) NONE Jefferson 100 PM TO 900 PM Trace (55%) to 0.05" (45%) to 0.1" (35%) 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]