Time: 904 PM Sat July 29, 2023 Forecaster: Justin Brooks ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- MESSAGE 1’S WILL BE ALLOWED TO EXPIRED AT 9:00 PM Message 1’s have been allowed to expire at 9pm as the threat of heavy rainfall has come to an end. Strong storms persist just east of the District at this time which have been producing heavy rainfall over the last several hours. These storms have pulsed up and down with a few isolated storms just within the District boundary that quickly dissipated. Storms have cleared the District at this time and will continue to move eastward through the rest of the evening. Partly cloudy skies currently will slowly clear through the overnight. Overnight with low will drop into the low to mid 60’s on the plains with mid to upper 50’s along the foothills. STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce a trace to 0.1” total in 10-30 minutes. A weak to moderate shower will produce 0.10-0.30” total, in 10-30 minutes. WORST CASE SCENARIO: A thunderstorm is able to develop within the District has the potential to produce up to 0.5” in 10-30 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Denver County 1 Current TO 905 PM Current TO 905 PM Adams County 1 Current TO 905 PM Current TO 905 PM Douglas County 1 Current TO 905 PM Current TO 905 PM Broomfield County 1 Current TO 905 PM Current TO 905 PM Jefferson County 1 Current TO 905 PM Current TO 905 PM Boulder County 1 Current TO 905 PM Current TO 905 PM DIA 1 Current TO 905 PM Current TO 905 PM Arapahoe County 1 Current TO 905 PM Current TO 905 PM the City of Aurora 1 Current TO 905 PM Current TO 905 PM Arvada 1 Current TO 905 PM Current TO 905 PM Wheat Ridge 1 Current TO 905 PM Current TO 905 PM Lakewood 1 Current TO 905 PM Current TO 905 PM County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 1000 PM SAT Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Arapahoe Current TO 1000 PM SAT Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Boulder Current TO 1000 PM SAT Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Broomfield Current TO 1000 PM SAT Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Denver Current TO 1000 PM SAT Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Douglas Current TO 1000 PM SAT Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Jefferson Current TO 1000 PM SAT Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Foothills above 6500ft       Boulder Current TO 1000 PM SAT Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Douglas Current TO 1000 PM SAT Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Jefferson Current TO 1000 PM SAT Trace (20%) to 0.1" (10%) to 0.3" (5%) 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]