Time: 930 AM Tue July 9, 2024 Forecaster: Laura Smith ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- Hot with isolated afternoon and evening showers and thunderstorms A slow-moving heat wave continues to expand over the Four-Corners region, supporting hot, sunny, and mostly dry conditions throughout the week and into the weekend. Today will be mostly sunny with afternoon temperatures in the upper 80s to low 90s. Dewpoints will be in the mid 30s with precipitable water (PWAT) values around 0.70”. These conditions encourage slight chances for isolated afternoon to evening showers and thunderstorms, with very little risk of heavy rain. Storm motions will be northwest to southeast around 20 mph. STORM RAINFALL POTENTIAL AND DURATION: Thunderstorms today have the potential to produce up to 0.20” in 10-30 minutes. WORST CASE SCENARIO: A strong thunderstorm may be capable of producing 0.40” or more in 30 minutes or less. A LOOK AHEAD: Tomorrow will be similar with afternoon highs in the upper 80s to low 90s followed by slight chances for isolated afternoon to evening showers and thunderstorms. The heat wave intensifies over Colorado on Thursday as temperatures climb into the mid to upper 90s. Warming continues Friday with temperatures soaring into triple digits across the High Plains. Very little change to this pattern is expected Saturday as the heat wave remains firmly anchored over the Intermountain West. High temperatures will once again reach a scorching 100°F under clear skies. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 300 PM TO 900 PM Trace (25%) to 0.1" (15%) to 0.2" (5%) NONE Arapahoe 300 PM TO 900 PM Trace (25%) to 0.1" (15%) to 0.2" (5%) NONE Boulder 300 PM TO 900 PM Trace (25%) to 0.1" (15%) to 0.2" (5%) NONE Broomfield 300 PM TO 900 PM Trace (25%) to 0.1" (15%) to 0.2" (5%) NONE Denver 300 PM TO 900 PM Trace (25%) to 0.1" (15%) to 0.2" (5%) NONE Douglas 300 PM TO 900 PM Trace (25%) to 0.1" (15%) to 0.2" (5%) NONE Jefferson 300 PM TO 900 PM Trace (25%) to 0.1" (15%) to 0.2" (5%) NONE Foothills above 6500ft       Boulder 300 PM TO 900 PM Trace (25%) to 0.1" (15%) to 0.2" (5%) NONE Douglas 300 PM TO 900 PM Trace (25%) to 0.1" (15%) to 0.2" (5%) NONE Jefferson 300 PM TO 900 PM Trace (25%) to 0.1" (15%) to 0.2" (5%) 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]