Time: 819 PM Thu August 8, 2024 Forecaster: Justin Brooks ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- MESSAGE 1’S WILL BE ALLOWED TO EXPIRE AT 9:00 PM TONIGHT Message 1’s will be allowed to expire at 9pm tonight as the threat of heavy rainfall has come to an end. Cooler temperatures helped limit storms for some locations today. Mainly areas north of I-70 where better rainfall this morning and more persistent cloud cover deterred any meaning development. Areas where the sun peaked through this afternoon, mostly south of I-70, received a moderate to strong round of storms this afternoon and early evening. Another late shower developed over the Chatfield area and is dissipating as it moves E/SE and out of the District. This will result in a few light showers remaining for the southeastern portion of the District with the rest of the District remaining mostly dry throughout the rest of the evening. A few off and on light to briefly moderate showers could develop through tomorrow morning, with minimal additional precipitation expected. Overnight will be cloudy with some areas of fog/drizzle possible in the morning hours tomorrow. Temperatures will drop into the upper 50s for the plains with low to mid 50s along the foothills. STORM RAINFALL POTENTIAL AND DURATION: Typical showers through tomorrow morning will produce a trace-0.10" total in 10-30 minutes. WORST CASE SCENARIO: A moderate to strong shower will produce rainfall rates of 0.10”-0.30” total in 10-30 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Boulder County 1 Current TO 900 PM Current TO 830 PM Jefferson County 1 Current TO 900 PM Current TO 830 PM Broomfield County 1 Current TO 900 PM Current TO 830 PM Douglas County 1 Current TO 900 PM Current TO 830 PM Adams County 1 Current TO 900 PM Current TO 830 PM Denver County 1 Current TO 900 PM Current TO 830 PM DIA 1 Current TO 900 PM Current TO 830 PM Arapahoe County 1 Current TO 900 PM Current TO 830 PM the City of Aurora 1 Current TO 900 PM Current TO 830 PM Arvada 1 Current TO 900 PM Current TO 830 PM Wheat Ridge 1 Current TO 900 PM Current TO 830 PM Lakewood 1 Current TO 900 PM Current TO 830 PM County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 900 AM FRI Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Arapahoe Current TO 900 AM FRI Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Boulder Current TO 900 AM FRI Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Broomfield Current TO 900 AM FRI Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Denver Current TO 900 AM FRI Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Douglas Current TO 900 AM FRI Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Jefferson Current TO 900 AM FRI Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Foothills above 6500ft       Boulder Current TO 900 AM FRI Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Douglas Current TO 900 AM FRI Trace (30%) to 0.1" (15%) to 0.3" (5%) NONE Jefferson Current TO 900 AM FRI Trace (30%) to 0.1" (15%) 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]