Flash Flood Prediction Program

Time: 813 PM Mon June 10, 2024 Forecaster: Justin Brooks ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- Additional storm development to the north could impact portions of the District later this evening. Strong storms to the northeast have produced gust fronts across norther Colorado this evening. A strong storm has initiated in the Fort Collins Area and could potentially produce additional storms favoring northern portions of the District over the next few hours. These storms have continued to be moderate to strong with isolated pockets of heavy rain. Storm movement has remained quick, between 15-25mph helping limit point rainfall amounts. However, a stronger storm formed along a gust front will still have the potential to produce a quick 0.5”-0.75” in 10-30 minutes. This has resulted in a LOW chance Messages will be issued over the next couple of hours, possibly extending until midnight. STORM RAINFALL POTENTIAL AND DURATION: Typical showers and isolated thunderstorms will produce a 0.05-0.25” total in 10-30 minutes. A moderate to strong/severe shower/thunderstorm will produce 0.25-0.75” total in 10-30 minutes. WORST CASE SCENARIO: A strong, stationary thunderstorm, or training of thunderstorm cells will have the potential to produce up to 1.75” total in under 60 minutes. A LOOK AHEAD: Skies will gradually clear overnight with warmer temperatures tomorrow as highs are expected to be well into the 80s. A slight chance for showers/isoalted thunderstorms tomorrow, mainly for areas along and south of the Palmer Divide. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 1159 PM MON 0.05" (75%) to 0.25" (50%) to 0.75" (25%) MOD Arapahoe Current TO 1159 PM MON 0.05" (60%) to 0.25" (40%) to 0.75" (20%) MOD Boulder Current TO 1159 PM MON 0.05" (60%) to 0.25" (40%) to 0.75" (20%) MOD Broomfield Current TO 1159 PM MON 0.05" (60%) to 0.25" (40%) to 0.75" (20%) MOD Denver Current TO 1159 PM MON 0.05" (60%) to 0.25" (40%) to 0.75" (20%) MOD Douglas Current TO 1159 PM MON 0.05" (30%) to 0.25" (15%) to 0.75" (10%) LOW Jefferson Current TO 1159 PM MON 0.05" (30%) to 0.25" (15%) to 0.75" (10%) LOW Foothills above 6500ft       Boulder Current TO 1159 PM MON 0.05" (60%) to 0.25" (40%) to 0.75" (20%) MOD Douglas Current TO 1159 PM MON 0.05" (30%) to 0.25" (15%) to 0.75" (10%) LOW Jefferson Current TO 1159 PM MON 0.05" (30%) to 0.25" (15%) to 0.75" (10%) LOW MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS. MHFD Flood Prediction Center: 303-458-0789    F2P2 Website [http://udfcd.org/Flash+Flood+Prediction+Program]