Flash Flood Prediction Program

Time: 859 PM Wed August 7, 2024 Forecaster: Justin Brooks ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- MESSAGE 1’S WILL BE ALLOWED TO EXPIRE AT 10:00 PM TONIGHT Message 1’s will be allowed to expire at 10pm tonight as the threat of heavy rainfall has come to an end. Storms today remained weak over the District with a few very strong storms to the north and just east of the District boundary. Storms have since moved well eastward and onto the eastern plains. A slight chance for a few isolated showers this evening before skies clear out overnight. Any shower activity this evening will remain minimal. Temperatures will drop into the upper 50s to low 60s overnight. A change in the pattern tomorrow as a cold front brings much cooler conditions throughout the day. A good chance for increasing clouds with a few showers ahead of the cold front during the morning tomorrow. This cold front will move in from the N/NE before, or right around midday. Shower activity and strength will hinge heavily on daytime temperatures tomorrow, mainly due to the timing of this cold front. STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce a trace-0.10" total in 10-30 minutes. WORST CASE SCENARIO: A moderate to strong thunderstorm 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 1000 PM Current TO 930 PM Jefferson County 1 Current TO 1000 PM Current TO 930 PM Broomfield County 1 Current TO 1000 PM Current TO 930 PM Douglas County 1 Current TO 1000 PM Current TO 930 PM Adams County 1 Current TO 1000 PM Current TO 930 PM Denver County 1 Current TO 1000 PM Current TO 930 PM DIA 1 Current TO 1000 PM Current TO 930 PM Arapahoe County 1 Current TO 1000 PM Current TO 930 PM the City of Aurora 1 Current TO 1000 PM Current TO 930 PM Arvada 1 Current TO 1000 PM Current TO 930 PM Wheat Ridge 1 Current TO 1000 PM Current TO 930 PM Lakewood 1 Current TO 1000 PM Current TO 930 PM County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 1159 PM WED Trace (10%) to 0.1" (5%) NONE Arapahoe Current TO 1159 PM WED Trace (10%) to 0.1" (5%) NONE Boulder Current TO 1159 PM WED Trace (10%) to 0.1" (5%) NONE Broomfield Current TO 1159 PM WED Trace (10%) to 0.1" (5%) NONE Denver Current TO 1159 PM WED Trace (10%) to 0.1" (5%) NONE Douglas Current TO 1159 PM WED Trace (10%) to 0.1" (5%) NONE Jefferson Current TO 1159 PM WED Trace (10%) to 0.1" (5%) NONE Foothills above 6500ft       Boulder Current TO 1159 PM WED Trace (10%) to 0.1" (5%) NONE Douglas Current TO 1159 PM WED Trace (10%) to 0.1" (5%) NONE Jefferson Current TO 1159 PM WED Trace (10%) to 0.1" (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]