Time: 756 AM Fri September 2, 2022 Forecaster: Justin Brooks ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- HOT TODAY WITH A SLIGHT CHANCE FOR HIGH-BASED AFTERNOON RAIN SHOWERS/ISOLATED THUNDERSTORMS - Not much change to the overall pattern today as high temperatures remain above average in the upper 80's to low 90's this afternoon. High-pressure will still dominate over the region leading to mostly mild conditions. - A slight chance for a few high-based rain showers/isolated thunderstorms this afternoon and early evening, however, most areas will likely remain dry as any precipitation struggles to reach the surface today. Best chance for shower activity will be from 2-8pm with skies clearing through the late evening. Storm motions will be from the NW to SE between 10-15mph which will also help limit any point rainfall amounts. - Overnight will be mild and dry as low temperatures drop 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-based showers will produce a trace-0.1" of rainfall in 10-30 minutes. A moderate rain shower/isolated thunderstorm could produce 0.1-0.2" in 10-30 minutes. WORST CASE SCENARIO: A stronger storm is able to develop and can potentially produce 0.2-0.5" of rainfall in 45-60 minutes. A LOOK AHEAD: A weak cold front moves into the region effectively dropping Saturday's high temperatures into the 80's. A slight chance for rain shower/thunderstorm activity along the higher terrain Saturday afternoon with minimal, if any precipitation expected inside the District at this time. Sunday's high temperatures jump back into the low 90's with sunny and mild conditions throughout the day. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 200 PM TO 800 PM Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Arapahoe 200 PM TO 800 PM Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Boulder 200 PM TO 800 PM Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Broomfield 200 PM TO 800 PM Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Denver 200 PM TO 800 PM Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Douglas 200 PM TO 800 PM Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Jefferson 200 PM TO 800 PM Trace (20%) to 0.1" (10%) to 0.2" (5%) NONE Foothills above 6500ft       Boulder 200 PM TO 800 PM Trace (30%) to 0.1" (15%) to 0.2" (10%) NONE Douglas 200 PM TO 800 PM Trace (30%) to 0.1" (15%) to 0.2" (10%) NONE Jefferson 200 PM TO 800 PM Trace (30%) to 0.1" (15%) to 0.2" (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]