Flash Flood Prediction Program

Time: 932 AM Mon August 1, 2022 Forecaster: Laura Smith ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- ISOLATED AFTERNOON TO EVENING SHOWERS/THUNDERSTORMS - Isolated thunderstorm activity is expected across the District today. Highs this afternoon will reach the mid 90's, dewpoints in the mid 40's to low 50's. Best chances for thunderstorms today will be across the foothills between noon through 7pm. - Showers and thunderstorms are expected to initiate across higher terrain around noon. Storms will move east-southeast around 10-20 mph as they traverse the plains. High-based storms will produce light to briefly moderate rainfall and gusty winds. - Dry conditions are expected for the remainder of the evening and overnight period. STORM RAINFALL POTENTIAL AND DURATION: Rain showers and weak to briefly moderate thunderstorms will produce rainfall amounts of a trace to 0.3". WORST CASE SCENARIO: A stronger thunderstorm is able to develop with the potential to produce rainfall rates of 0.3-0.6" in 10-30 minutes. A LOOK AHEAD: High pressure ridging continues across the intermountain west, transporting monsoonal moisture into the state throughout the week. The warming trend continues Tuesday with temperatures in the mid 90s and a chance for afternoon isolated showers and thunderstorms. A cool front is expected to sweep across the plains Wednesday, bringing temperatures down to the upper 80s followed by a chance of afternoon showers and thunderstorms. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 100 PM TO 700 PM Trace (40%) to 0.3" (20%) to 0.6" (10%) LOW Arapahoe 100 PM TO 700 PM Trace (40%) to 0.3" (20%) to 0.6" (10%) LOW Boulder 100 PM TO 700 PM Trace (40%) to 0.3" (20%) to 0.6" (10%) LOW Broomfield 100 PM TO 700 PM Trace (40%) to 0.3" (20%) to 0.6" (10%) LOW Denver 100 PM TO 700 PM Trace (40%) to 0.3" (20%) to 0.6" (10%) LOW Douglas 100 PM TO 700 PM Trace (40%) to 0.3" (20%) to 0.6" (10%) LOW Jefferson 100 PM TO 700 PM Trace (40%) to 0.3" (20%) to 0.6" (10%) LOW Foothills above 6500ft       Boulder 1200 PM TO 700 PM Trace (60%) to 0.3" (30%) to 0.6" (15%) LOW Douglas 1200 PM TO 700 PM Trace (60%) to 0.3" (30%) to 0.6" (15%) LOW Jefferson 1200 PM TO 700 PM Trace (60%) to 0.3" (30%) to 0.6" (15%) 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]