Time: 901 AM Sun June 26, 2022 Forecaster: Justin Brooks ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- COOL TODAY WITH A CHANCE FOR RAIN SHOWERS/ISOLATED THUNDERSTORMS THIS AFTERNOON AND EARLY EVENING - Cloudy and cool as temperatures currently in the mid to upper 50's. Cloud cover should hold throughout the day, which will limit storm activity this afternoon and evening, however there is still a good chance for scattered rain showers and isolated thunderstorms this afternoon and evening. - Rain showers and thunderstorms will likely initiate along the higher terrain around midday today with a few rain showers/isolated thunderstorms moving onto the plains and into the District between 1-6pm this afternoon and early evening with a few isolated rain showers possible after 6pm through 10pm this evening before skies gradually start to clear out. A decent amount of available moisture this morning at the low-levels will keep a low chance for rain showers to be moderate to briefly heavy, although with high temperatures expected in the upper 60's to low 70's there will only be a slight chance for good storm development off of the foothills this afternoon. - Overnight will be mild and cooler as temperatures drop into the mid to upper 50's on the plains with around 50°F along the foothills. STORM RAINFALL POTENTIAL AND DURATION: Typical rain showers/isolated thunderstorms will produce a trace to 0.1" in 10- 30 minutes. A weak to moderate thunderstorm will have the potential to produce rainfall rates of 0.1-0.4" in 10-30 minutes. WORST CASE SCENARIO: A moderate to briefly strong thunderstorm is able to develop with the potential to produce brief heavy rainfall of 0.4-1.0" in 10-30 minutes. A LOOK AHEAD: High-pressure starts to build tomorrow, along with mostly sunny skies will lead to much warmer high temperatures tomorrow with highs reaching a more seasonable low to mid 80's. Another chance for afternoon and early evening rain showers/isolated thunderstorms with rainfall chances tapering off by sunset. Hot and dry conditions return Tuesday as highs reach the upper 80's to low 90's on the plains with low to mid 80's along the foothills. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 1200 PM TO 700 PM Trace (75%) to 0.1" (50%) to 0.4" (25%) LOW Arapahoe 1200 PM TO 700 PM Trace (75%) to 0.1" (50%) to 0.4" (25%) LOW Boulder 1200 PM TO 700 PM Trace (75%) to 0.1" (50%) to 0.4" (25%) LOW Broomfield 1200 PM TO 700 PM Trace (75%) to 0.1" (50%) to 0.4" (25%) LOW Denver 1200 PM TO 700 PM Trace (75%) to 0.1" (50%) to 0.4" (25%) LOW Douglas 1200 PM TO 700 PM Trace (75%) to 0.1" (50%) to 0.4" (25%) LOW Jefferson 1200 PM TO 700 PM Trace (75%) to 0.1" (50%) to 0.4" (25%) LOW Foothills above 6500ft       Boulder 1200 PM TO 700 PM Trace (80%) to 0.1" (60%) to 0.4" (30%) LOW Douglas 1200 PM TO 700 PM Trace (80%) to 0.1" (60%) to 0.4" (30%) LOW Jefferson 1200 PM TO 700 PM Trace (80%) to 0.1" (60%) to 0.4" (30%) 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]