Flash Flood Prediction Program

Time: 906 AM Tue July 25, 2023 Forecaster: Laura Smith ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- HOT SUMMERTIME CONDITIONS WITH ISOLATED AFTERNOON THUNDERSTORMS The heat dome currently centered over the 4-corners region will be responsible for hot conditions though the remainder of the week. Today will be hot and partly to mostly sunny with afternoon temperatures climbing into the upper 90s, possibly exceeding 100°F in some areas. There is a chance for isolated showers and thunderstorms this afternoon through evening, with storm motions from west to east. Thunderstorm activity is expected to subside across the Front Range Urban Corridor by mid-evening. STORM RAINFALL POTENTIAL AND DURATION: Typical thunderstorms will produce moderate rainfall of up to 0.25” in 10-30 minutes. Strong thunderstorms have the potential to produce heavy rainfall up to 0.50” in 10-30 minutes. WORST CASE SCENARIO: Anchored or training thunderstorms have the potential to produce 0.50” to 1.00” in 60 minutes. A LOOK AHEAD: Temperatures remain in the 90s tomorrow along with a chance for afternoon showers and thunderstorms. Thursday will be similar, with highs in the mid 90s and afternoon showers and thunderstorms. Hot temperatures and isolated to scattered thunderstorm activity will continue through the remainder of the week and into the weekend. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 200 PM TO 800 PM Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW Arapahoe 200 PM TO 800 PM Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW Boulder 200 PM TO 800 PM Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW Broomfield 200 PM TO 800 PM Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW Denver 200 PM TO 800 PM Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW Douglas 200 PM TO 800 PM Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW Jefferson 200 PM TO 800 PM Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW Foothills above 6500ft       Boulder 200 PM TO 800 PM Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW Douglas 200 PM TO 800 PM Trace (80%) to 0.25" (50%) to 0.5" (20%) LOW Jefferson 200 PM TO 800 PM Trace (80%) to 0.25" (50%) to 0.5" (20%) 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]