Time: 825 AM Fri August 6, 2021 Forecaster: Justin Brooks ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- HOT AND HAZY WITH A SLIGHT CHANCE FOR ISOLATED AFTERNOON/EVE HIGH-BASED RAIN SHOWERS/THUNDERSTORMS - Not much change in the overall pattern today will lead to continued hazy skies along with high temperatures in the low to mid 90's on the plains with upper 80's to around 90 for the foothills. - A slight chance this afternoon for scattered high-based rain showers/isolated thunderstorms. Storms will initiate along the higher terrain around midday with the best chance for storms in the District between 2-8pm with a few lingering rain showers possible into the later evening. Dew points should mix out through the morning leading to drier surface conditions into this afternoon. this will likely result in high-based rain showers/isolated thunderstorms with minimal rainfall expected, however, there is a very slight chance dew points remain in place leading to a better chance for stronger storms this afternoon and evening. - Through the overnight, skies will gradually clear with mild conditions into Saturday. Overnight lows will drop into the low to mid 60's for the plains with mid to upper 50's along the foothills. STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers/isolated thunderstorms will produce a TR-0.2" of rainfall in 10-30 minutes. a moderate thunderstorm could produce 0.2-0.4" in 10-30 minutes. WORST CASE SCENARIO: A strong, nearly stationary storm formed along an outflow boundary has the potential to produce 0.4-1.2" in 60 minutes. A LOOK AHEAD: Hot and hazy conditions continue into the weekend with dry conditions expected both Saturday and Sunday. This pattern hold into next week with dry conditions expected both Monday and Tuesday along with continued hazy skies. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 200 PM TO 800 PM Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Arapahoe 200 PM TO 800 PM Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Boulder 200 PM TO 800 PM Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Broomfield 200 PM TO 800 PM Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Denver 200 PM TO 800 PM Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Douglas 200 PM TO 800 PM Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Jefferson 200 PM TO 800 PM Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Foothills above 6500ft       Boulder 200 PM TO 800 PM Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Douglas 200 PM TO 800 PM Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Jefferson 200 PM TO 800 PM Trace (50%) to 0.2" (25%) to 0.4" (10%) 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]