Time: 825 PM Sun June 9, 2024 Forecaster: Justin Brooks ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- MESSAGE 1’S WILL BE ALLOWED TO EXPIRE AT 9:00 PM Message 1’s will be allowed to expire at 9pm as the threat of heavy rain has come to an end. Stronger storms that formed inside the District have dissipated and are no longer a threat. A few lingering showers are moving off the foothills currently and are struggling to hold together as the airmass above the District is fairly stable at this time. A few showers could persist over the next couple of hours bringing some additional rainfall, however the threat for any heavy rainfall has ended as temperatures also have cooled into the 60s. Skies will gradually clear through the rest of the evening with clear skies expected during the overnight. Overnight lows will drop into the upper 50s on the plains with low 50s along the foothills. Excess moisture at the surface could result in foggy conditions during the morning hours tomorrow which should quickly burn off after sunrise. Tomorrows will be similar with another chance for moderate to heavy rain in the afternoon and early evening as thunderstorms once again impact the District. STORM RAINFALL POTENTIAL AND DURATION: A few lingering showers will have potenial to produce T-0.20" total in 10-30 minutes. WORST CASE SCENARIO: In the event an isolated stronger shower or thunderstorm develops, 0.20"-0.40” total is possible in 10-30 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Boulder County 1 Current TO 900 PM Current TO 830 PM Jefferson County 1 Current TO 900 PM Current TO 830 PM Broomfield County 1 Current TO 900 PM Current TO 830 PM Douglas County 1 Current TO 900 PM Current TO 830 PM Adams County 1 Current TO 900 PM Current TO 830 PM Denver County 1 Current TO 900 PM Current TO 830 PM DIA 1 Current TO 900 PM Current TO 830 PM Arapahoe County 1 Current TO 900 PM Current TO 830 PM the City of Aurora 1 Current TO 900 PM Current TO 830 PM Arvada 1 Current TO 900 PM Current TO 830 PM Wheat Ridge 1 Current TO 900 PM Current TO 830 PM Lakewood 1 Current TO 900 PM Current TO 830 PM County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 1100 PM SUN Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE Arapahoe Current TO 1100 PM SUN Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE Boulder Current TO 1100 PM SUN Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE Broomfield Current TO 1100 PM SUN Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE Denver Current TO 1100 PM SUN Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE Douglas Current TO 1100 PM SUN Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE Jefferson Current TO 1100 PM SUN Trace (30%) to 0.2" (15%) to 0.4" (5%) NONE Foothills above 6500ft       Boulder Current TO 1100 PM SUN Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Douglas Current TO 1100 PM SUN Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Jefferson Current TO 1100 PM SUN Trace (40%) to 0.2" (20%) to 0.4" (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]