Flash Flood Prediction Program

Time: 952 AM Tue August 13, 2024 Forecaster: Laura Smith ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- Another active weather day is expected across the District Another active weather day is expected across the District today. Afternoon high temperatures will be in the 80s with dewpoints in the low to mid 50s and precipitable water (PWAT) values around 1.20”. Isolated thunderstorms are expected to develop by the early afternoon over complex terrain, becoming scattered to widespread as outflows propagate convection onto the plains. Storm motions will be from southwest to northeast around 15-20 mph. Storms will be capable of producing efficient, moderate to heavy rainfall. STORM RAINFALL POTENTIAL AND DURATION: Showers and thunderstorms today have the potential to produce between 0.75-1.25” in 10-30 minutes. WORST CASE SCENARIO: A slow-moving stronger thunderstorm may be capable of producing 2.00” or more in 30 minutes or less. A LOOK AHEAD: On Wednesday, expect highs in the 80s and another round of afternoon thunderstorms. Although atmospheric moisture will begin decreasing, there will still be enough moisture for scattered storms broadly across the District. Moisture continues decreasing on Thursday, supporting isolated showers and storms capable of producing light rain and gusty winds. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 200 PM TO 1000 PM 0.75" (75%) to 1" (50%) to 1.25" (25%) HIGH Arapahoe 200 PM TO 1000 PM 0.75" (75%) to 1" (50%) to 1.25" (25%) HIGH Boulder 200 PM TO 1000 PM 0.75" (75%) to 1" (50%) to 1.25" (25%) HIGH Broomfield 200 PM TO 1000 PM 0.75" (75%) to 1" (50%) to 1.25" (25%) HIGH Denver 200 PM TO 1000 PM 0.75" (75%) to 1" (50%) to 1.25" (25%) HIGH Douglas 200 PM TO 1000 PM 0.75" (75%) to 1" (50%) to 1.25" (25%) HIGH Jefferson 200 PM TO 1000 PM 0.75" (75%) to 1" (50%) to 1.25" (25%) HIGH Foothills above 6500ft       Boulder 200 PM TO 1000 PM 0.75" (75%) to 1" (50%) to 1.25" (25%) HIGH Douglas 200 PM TO 1000 PM 0.75" (75%) to 1" (50%) to 1.25" (25%) HIGH Jefferson 200 PM TO 1000 PM 0.75" (75%) to 1" (50%) to 1.25" (25%) HIGH MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS. MHFD Flood Prediction Center: 303-458-0789    F2P2 Website [http://udfcd.org/Flash+Flood+Prediction+Program]