Time: 955 PM Sat August 10, 2024 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 11pm as the threat of heavy rainfall has come to an end. A couple of strong storms impacted southern portions of the District this afternoon bringing moderate to heavy rainfall. A few showers and isolated thunderstorms persist for areas south of the District and will continue to move east/southeast through the evening. A few light showers may remain for southern portions of the District over the next couple of hours before showers activity comes to an end for the night. Temperatures overnight will decrease to around 60 for the plains with mid 50s along the foothills. Similar conditions will remain in place for tomorrow with another good chance for isolated afternoon and evening showers/thunderstorms. An abundance of available moisture remains in place, both aloft and at the surface, which will result in a continued chance for moderate to heavy rainfall out of any storms that are able to develop. STORM RAINFALL POTENTIAL AND DURATION: Weakening showers will produce a trace to 0.10” total in 10-30 minutes. WORST CASE SCENARIO: A moderate shower/ weak thunderstorm will have the potential to produce 0.10-0.30” total in 10-30 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Boulder County 1 Current TO 1100 PM Current TO 1030 PM Jefferson County 1 Current TO 1100 PM Current TO 1030 PM Broomfield County 1 Current TO 1100 PM Current TO 1030 PM Douglas County 1 Current TO 1100 PM Current TO 1030 PM Adams County 1 Current TO 1100 PM Current TO 1030 PM Denver County 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 the City of Aurora 1 Current TO 1100 PM Current TO 1030 PM Arvada 1 Current TO 1100 PM Current TO 1030 PM Wheat Ridge 1 Current TO 1100 PM Current TO 1030 PM Lakewood 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 1159 PM SAT Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE Arapahoe Current TO 1159 PM SAT Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE Boulder Current TO 1159 PM SAT Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE Broomfield Current TO 1159 PM SAT Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE Denver Current TO 1159 PM SAT Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE Douglas Current TO 1159 PM SAT Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Jefferson Current TO 1159 PM SAT Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE Foothills above 6500ft       Boulder Current TO 1159 PM SAT Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE Douglas Current TO 1159 PM SAT Trace (10%) to 0.1" (5%) to 0.3" (0%) NONE Jefferson Current TO 1159 PM SAT Trace (10%) to 0.1" (5%) to 0.3" (0%) 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]