Flash Flood Prediction Program

Time: 811 AM Tue August 30, 2022 Forecaster: Justin Brooks ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- WARM TODAY WITH MOSLTY DRY CONDITIONS LIKELY THROUGHOUT THE DAY - High-pressure will start to build over the region today leading to mostly sunny skies, with mild and mostly dry conditions throughout the day today. - High temperatures will be slightly above average in the upper 80's to low 90's on the plains with low to mid 80's along the foothills. Clouds will likely increase over the higher terrain this afternoon with a very slight chance for a few scattered rain showers/isolated thunderstorms along the Continental and Palmer Divide, however most areas in and around the District will remain dry. Best chance for any shower activity will be from 1-6pm with skies clearing into the evening. - Mild conditions are expected to continue this evening with overnight lows dropping into the upper 50's to low 60's on the plains with low to mid 50's along the foothills. STORM RAINFALL POTENTIAL AND DURATION: Typical high terrain rain showers will produce a TR-0.1" in 10-30 minutes. a moderate rain showers/isolated thunderstorm could produce 0.1-0.3" in 10-30 minutes. WORST CASE SCENARIO: A stronger storm is able to develop along the higher terrain and has the potential to produce 0.3-0.8" in 45-60 minutes. A LOOK AHEAD: A slight uptick in mid to upper-level moisture, combined with a weak disturbance tomorrow will bring a slightly better chance for scattered rain showers/thunderstorms tomorrow, however, most will likely be high-based which will bring minimal rainfall chances across the District. Conditions dry out Thursday with highs continuing in the 90's. Another slight chance for scattered high-based storms Friday afternoon and early evening, however the heavy rainfall threat will remain minimal at this time. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 200 PM TO 600 PM Trace (5%) to 0.1" (0%) NONE Arapahoe 200 PM TO 600 PM Trace (5%) to 0.1" (0%) NONE Boulder 200 PM TO 600 PM Trace (10%) to 0.1" (5%) NONE Broomfield 200 PM TO 600 PM Trace (5%) to 0.1" (0%) NONE Denver 200 PM TO 600 PM Trace (5%) to 0.1" (0%) NONE Douglas 200 PM TO 600 PM Trace (10%) to 0.1" (5%) NONE Jefferson 200 PM TO 600 PM Trace (10%) to 0.1" (5%) NONE Foothills above 6500ft       Boulder 100 PM TO 500 PM Trace (15%) to 0.1" (10%) to 0.3" (5%) NONE Douglas 100 PM TO 500 PM Trace (15%) to 0.1" (10%) to 0.3" (5%) NONE Jefferson 100 PM TO 500 PM Trace (15%) to 0.1" (10%) to 0.3" (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]