Flash Flood Prediction Program

Time: 942 AM Sat May 13, 2023 Forecaster: Laura Smith ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- CONDITIONS RETURN TO NORMAL TODAY; SCATTERED AFTERNOON RAIN SHOWERS & THUNDERSTORMS EXPECTED A more typical springtime weather pattern emerges today with partly cloudy morning skies followed by afternoon to evening showers and thunderstorms. High temperatures will reach the low to mid 60s with dew points in the low to mid 40s. A chance showers and thunderstorms will start to move into the area around 3pm. Light to briefly moderate isolated to scattered rain showers are expected into the late evening hours, tapering off at or around 10pm. STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers/isolated thunderstorms will produce a TR-0.10” in 10-30 minutes. A moderate rain showers/isolated thunderstorm could produce 0.10”-0.25” in 10-30 minutes. WORST CASE SCENARIO: An anchored rain shower/isolated thunderstorm, or training of rain showers, has the potential to produce 0.25”-0.50” in 45-60 minutes. A LOOK AHEAD: Better chances for rainfall in the coming days. Tomorrow morning, a cold front is expected to wash over the Front Range Urban Corridor. Afternoon temperatures will be in the mid to upper 50s, dew points in the mid to upper 40s, with scattered to widespread showers and thunderstorms. The springtime thunderstorm pattern remains in place with warmer temperatures and afternoon thunderstorms expected into late next week. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 300 PM TO 1000 PM Trace (50%) to 0.1" (25%) to 0.25" (10%) NONE Arapahoe 300 PM TO 1000 PM Trace (50%) to 0.1" (25%) to 0.25" (10%) NONE Boulder 300 PM TO 1000 PM Trace (50%) to 0.1" (25%) to 0.25" (10%) NONE Broomfield 300 PM TO 1000 PM Trace (50%) to 0.1" (25%) to 0.25" (10%) NONE Denver 300 PM TO 1000 PM Trace (50%) to 0.1" (25%) to 0.25" (10%) NONE Douglas 300 PM TO 1000 PM Trace (50%) to 0.1" (25%) to 0.25" (10%) NONE Jefferson 300 PM TO 1000 PM Trace (50%) to 0.1" (25%) to 0.25" (10%) NONE Foothills above 6500ft       Boulder 300 PM TO 1000 PM Trace (60%) to 0.1" (40%) to 0.25" (20%) NONE Douglas 300 PM TO 1000 PM Trace (60%) to 0.1" (40%) to 0.25" (20%) NONE Jefferson 300 PM TO 1000 PM Trace (60%) to 0.1" (40%) to 0.25" (20%) 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]