Time: 1024 PM Wed August 2, 2023 Forecaster: Justin Brooks ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- MESSAGE 1’S WILL BE ALLOWED TO EXPIRE AT 11:00 PM Message 1’s will be allowed to expire at 11:00pm as the threat for heavy rainfall has come to an end. A strong late night round of showers/thunderstorms has impacted the District. A few lingering showers/isolated thunderstorms are still in the north, and eastern portions of the District at this time and will continue to move eastward through the overnight. A chance for off and on overnight showers and possibly a rumble of thunder or two through daybreak tomorrow. A slight chance showers and isolated thunderstorms tomorrow morning, mainly out of the eastern plains. Another chance for showers/thunderstorms tomorrow afternoon and early evening. STORM RAINFALL POTENTIAL AND DURATION: Typical showers/thunderstorms will produce a TR-0.20” total in 10 to 30 minutes. A moderate thunderstorm will produce 0.20” to 0.40” total in 10 to 30 minutes. WORST CASE SCENARIO: A strong thunderstorm, or training of moderate thunderstorms will have the potential to produce up to 0.80” total in under 60 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Lakewood 1 Current TO 1100 PM Current TO 1030 PM Wheat Ridge 1 Current TO 1100 PM Current TO 1030 PM Arvada 1 Current TO 1100 PM Current TO 1030 PM the City of Aurora 1 Current TO 1100 PM Current TO 1030 PM DIA 1 Current TO 1100 PM Current TO 1030 PM Arapahoe County 1 Current TO 1100 PM Current TO 1030 PM Denver County 1 Current TO 1100 PM Current TO 1030 PM Adams County 1 Current TO 1100 PM Current TO 1030 PM Douglas County 1 Current TO 1100 PM Current TO 1030 PM Broomfield County 1 Current TO 1100 PM Current TO 1030 PM Jefferson County 1 Current TO 1100 PM Current TO 1030 PM Boulder County 1 Current TO 1100 PM Current TO 1030 PM County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 600 AM THU Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Arapahoe Current TO 600 AM THU Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Boulder Current TO 600 AM THU Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Broomfield Current TO 600 AM THU Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Denver Current TO 600 AM THU Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Douglas Current TO 600 AM THU Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Jefferson Current TO 600 AM THU Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Foothills above 6500ft       Boulder Current TO 600 AM THU Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Douglas Current TO 600 AM THU Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Jefferson Current TO 600 AM THU Trace (50%) to 0.2" (25%) 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]