Time: 836 PM Thu July 18, 2024 Forecaster: Aaron O ------------------------- 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 rainfall has come to an end. Storms just outside of the District have stabilized the region with any shower activity falling apart along the higher terrain, but a gust front is currently moving through the District. Due to the strong cap over the District, the gust front will likely have minimal impact with only very isolated showers possible through 11pm. 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. STORM RAINFALL POTENTIAL AND DURATION: If a shower does develop, it would have the potential to produce between a trace and 0.10" in 10-30 minutes. WORST CASE SCENARIO: If a stronger shower or isolated thunderstorm is able to develop, it would have the potential to produce between 0.10" and 0.20" in 10-30 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Lakewood 1 Current TO 900 PM Current TO 900 PM Arvada 1 Current TO 900 PM Current TO 900 PM Wheat Ridge 1 Current TO 900 PM Current TO 900 PM the City of Aurora 1 Current TO 900 PM Current TO 900 PM Arapahoe County 1 Current TO 900 PM Current TO 900 PM DIA 1 Current TO 900 PM Current TO 900 PM Denver County 1 Current TO 900 PM Current TO 900 PM Adams County 1 Current TO 900 PM Current TO 900 PM Douglas County 1 Current TO 900 PM Current TO 900 PM Broomfield County 1 Current TO 900 PM Current TO 900 PM Boulder County 1 Current TO 900 PM Current TO 900 PM Jefferson County 1 Current TO 900 PM Current TO 900 PM County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 1100 PM THU Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED Arapahoe Current TO 1100 PM THU Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED Boulder Current TO 1100 PM THU Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED Broomfield Current TO 1100 PM THU Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED Denver Current TO 1100 PM THU Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED Douglas Current TO 1100 PM THU Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED Jefferson Current TO 1100 PM THU Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED Foothills above 6500ft       Boulder Current TO 1100 PM THU Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED Douglas Current TO 1100 PM THU Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED Jefferson Current TO 1100 PM THU Trace (15%) to 0.05" (10%) to 0.1" (5%) ISSUED MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS. MHFD Flood Prediction Center: 303-458-0789    F2P2 Website [http://udfcd.org/Flash+Flood+Prediction+Program]