Time: 833 AM Fri May 27, 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 - High-pressure will dominate over the region today leading to well above average temperatures as highs top out around 90°F this afternoon. The record for today at DIA is 93°F set in 2006. - A very slight chance this afternoon for a round or two of high-based rain showers/isolated thunderstorms. Best chance for storm activity will be from 2pm through 6pm. Minimal precipitation is expected as most rainfall will struggle to reach the surface, leading to an increase chance for gusty winds this afternoon rather than any meaningful rainfall. Any thunderstorm activity will likely remain along the higher terrain in the foothills and possible along the Palmer Divide, however a strike or two cannot be completely ruled out over the District. - Skies gradually clear this evening bringing mild conditions through the overnight and into Saturday morning. Overnight lows will drop into the 50's on the plains with upper 40's along the foothills. STORM RAINFALL POTENTIAL AND DURATION: Typical high-based rain showers/isolated thunderstorms will produce a trace to 0.1" of rainfall in 10-30 minutes. A weak to moderate thunderstorms will have the potential to produce rainfall rates of 0.1-0.3" in 10-30 minutes. WORST CASE SCENARIO: A moderate to strong thunderstorm is able to develop with the potential for moderate to brief heavy rainfall of 0.3-0.8" in 30-60 minutes. A LOOK AHEAD: High-pressure holds through tomorrow leading to another hot day with highs expected to once again reach around 90°F in the afternoon. Dry conditions are expected throughout the day tomorrow. Sunday starts off mild and dry before a disturbance starts to move through the region late Sunday evening and into Memorial Day. This disturbance will bring a round of unsettled weather with scattered rain showers/isolated thunderstorms Monday, with a better chance for rain/thunderstorms for the region on Tuesday. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 100 PM TO 700 PM Trace (20%) to 0.1" (10%) NONE Arapahoe 100 PM TO 700 PM Trace (20%) to 0.1" (10%) NONE Boulder 100 PM TO 700 PM Trace (20%) to 0.1" (10%) NONE Broomfield 100 PM TO 700 PM Trace (20%) to 0.1" (10%) NONE Denver 100 PM TO 700 PM Trace (20%) to 0.1" (10%) NONE Douglas 100 PM TO 700 PM Trace (20%) to 0.1" (10%) NONE Jefferson 100 PM TO 700 PM Trace (20%) to 0.1" (10%) NONE Foothills above 6500ft       Boulder 100 PM TO 700 PM Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Douglas 100 PM TO 700 PM Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Jefferson 100 PM TO 700 PM Trace (20%) 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]