Time: 749 PM Wed June 26, 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 9:00 PM as the threat of heavy rainfall has come to an end. A few strong thunderstorms impacted the Denver Metro earlier this afternoon and have since moved out of the District. Some lingering showers persist for areas surrounding the District at this time and will likely remain north and east of the District into the evening hours. Any remaining showers will continue to move eastward and away from the District. There will be a slight chance for another round of showers and possibly a weak thunderstorm or two later this evening, favoring eastern portions of the District at this time. The best chance for additional showers will be between 9pm-11pm with skies partially clearing through the overnight. Overnight temperatures will drop into the mid 60s for the plains with upper 50s to low 60s along the foothills. Partly cloudy sky conditions are expected overnight and through daybreak tomorrow. Tomorrow will bring another chance for moderate to heavy rainfall with a few rounds of storms possible in the afternoon and early evening with the potential for a few showers to linger into the late evening hours. STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce a trace to 0.20" total in 10-30 minutes. A moderate to strong shower/thunderstorm will produce 0.20-0.40" total in 10-30 minutes. WORST CASE SCENARIO: A stationary, strong thunderstorm will have the potential to produce 0.40-0.80" total in 30-60 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Boulder County 1 Current TO 900 PM Current TO 800 PM Jefferson County 1 Current TO 900 PM Current TO 800 PM Broomfield County 1 Current TO 900 PM Current TO 800 PM Douglas County 1 Current TO 900 PM Current TO 800 PM Adams County 1 Current TO 900 PM Current TO 800 PM Denver County 1 Current TO 900 PM Current TO 800 PM DIA 1 Current TO 900 PM Current TO 800 PM Arapahoe County 1 Current TO 900 PM Current TO 800 PM the City of Aurora 1 Current TO 900 PM Current TO 800 PM Arvada 1 Current TO 900 PM Current TO 800 PM Wheat Ridge 1 Current TO 900 PM Current TO 800 PM Lakewood 1 Current TO 900 PM Current TO 800 PM County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 1159 PM WED Trace (40%) to 0.2" (20%) to 0.4" (10%) ISSUED Arapahoe Current TO 1159 PM WED Trace (40%) to 0.2" (20%) to 0.4" (10%) ISSUED Boulder Current TO 1159 PM WED Trace (20%) to 0.2" (10%) to 0.4" (5%) ISSUED Broomfield Current TO 1159 PM WED Trace (20%) to 0.2" (10%) to 0.4" (5%) ISSUED Denver Current TO 1159 PM WED Trace (40%) to 0.2" (20%) to 0.4" (10%) ISSUED Douglas Current TO 1159 PM WED Trace (40%) to 0.2" (20%) to 0.4" (10%) ISSUED Jefferson Current TO 1159 PM WED Trace (20%) to 0.2" (10%) to 0.4" (5%) ISSUED Foothills above 6500ft       Boulder Current TO 1159 PM WED Trace (20%) to 0.2" (10%) to 0.4" (5%) ISSUED Douglas Current TO 1159 PM WED Trace (20%) to 0.2" (10%) to 0.4" (5%) ISSUED Jefferson Current TO 1159 PM WED Trace (20%) to 0.2" (10%) to 0.4" (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]