Time: 847 AM Sat July 9, 2022 Forecaster: Brad Simmons ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- RECORD BREAKING HEAT AND GENERALLY DRY FOR THE PLAINS/ISOLATED STORMS FOOTHILLS - Temperatures will reach or exceed record levels for the date as high pressure dominates the weather pattern today. Temperatures will reach the mid 90's to lower 100's over the plains with 80's in the Front Range foothills. Normal high for Denver today is 90 degrees. The record high is 98 last set in 2021 and is expected to be broken during the early afternoon. - There will be a few fair weather clouds that develop this afternoon over the plains with possibly an isolated thunderstorm over the foothills and Palmer Divide. The far S and W Denver area suburbs maybe grazed by one of these storms which may provide some relief from the heat. The most likely outcome is breezy winds as any precipitation evaporates before reaching the surface outside the foothills. - Isolated thunderstorms over the foothills and Palmer Divide will initiate by mid afternoon with best chances from 3-8pm. Most areas within the District will be dry today with any rainfall from thunderstorms being minimal. STORM RAINFALL POTENTIAL AND DURATION: Rain showers and weak to briefly moderate thunderstorms will produce a trace to 0.2" of rain. A LOOK AHEAD: Continued hot on Sunday with highs in the mid 90's to around 100 degrees over the plains. There will be a better chance for isolated thunderstorms District wide but the storms that develop will produce minimal rain and gusty winds. Moisture increases Monday and Tuesday with scattered afternoon thunderstorms some of which may be capable of producing brief heavy rainfall. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 400 PM TO 800 PM Trace (15%) to 0.1" (5%) NONE Arapahoe 400 PM TO 800 PM Trace (30%) to 0.1" (10%) NONE Boulder 400 PM TO 800 PM Trace (20%) to 0.1" (5%) NONE Broomfield 400 PM TO 800 PM Trace (15%) to 0.1" (5%) NONE Denver 400 PM TO 800 PM Trace (15%) to 0.1" (5%) NONE Douglas 400 PM TO 800 PM Trace (40%) to 0.1" (10%) NONE Jefferson 400 PM TO 800 PM Trace (30%) to 0.1" (10%) NONE Foothills above 6500ft       Boulder 300 PM TO 800 PM Trace (30%) to 0.1" (15%) to 0.2" (5%) NONE Douglas 300 PM TO 800 PM Trace (60%) to 0.1" (30%) to 0.2" (10%) NONE Jefferson 300 PM TO 800 PM Trace (60%) to 0.1" (30%) 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]