Time: 124 PM Sun August 14, 2022 Forecaster: Brad Simmons ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- MESSAGE 1'S ISSUED FOR THE ENTIRE DISTRICT - Message 1's have been issued for the entire District and will be valid until 10:00 PM. - Thunderstorms have developed over the higher foothills to the W of the District and upper level steering winds will push these storms eastward with thunderstorms increasing withing the District between 2-3pm. Storms will be slow moving from W to E at around 10mph. - Slow storm motions and better moisture to work with today will result in the stronger storms capable of producing heavy rainfall that may lead to excessive runoff. The stronger storms will likely be isolated with best chances W of I-25 and S of I-70 and in particular over the foothills. STORM RAINFALL POTENTIAL AND DURATION: Moderate to strong thunderstorms will have the potential to produce rainfall rates of 0.4-1.2" in 10-30 minutes. WORST CASE SCENARIO: A slower moving or briefly anchored strong thunderstorm may produce rainfall amounts of up to 2.0" in 45-75 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Wheat Ridge 1 Current TO 1000 PM 230 PM TO 900 PM Lakewood 1 Current TO 1000 PM 230 PM TO 900 PM Arvada 1 Current TO 1000 PM 230 PM TO 900 PM the City of Aurora 1 Current TO 1000 PM 300 PM TO 900 PM Arapahoe County 1 Current TO 1000 PM 300 PM TO 900 PM DIA 1 Current TO 1000 PM 300 PM TO 900 PM Denver County 1 Current TO 1000 PM 300 PM TO 900 PM Adams County 1 Current TO 1000 PM 300 PM TO 900 PM Douglas County 1 Current TO 1000 PM 200 PM TO 900 PM Broomfield County 1 Current TO 1000 PM 230 PM TO 900 PM Jefferson County 1 Current TO 1000 PM 200 PM TO 900 PM Boulder County 1 Current TO 1000 PM 200 PM TO 900 PM County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 200 PM TO 1000 PM 0.2" (75%) to 0.6" (40%) to 1.2" (15%) ISSUED Arapahoe 200 PM TO 1000 PM 0.2" (75%) to 0.6" (40%) to 1.2" (20%) ISSUED Boulder 200 PM TO 1000 PM 0.2" (80%) to 0.6" (40%) to 1.2" (20%) ISSUED Broomfield 200 PM TO 1000 PM 0.2" (80%) to 0.6" (40%) to 1.2" (20%) ISSUED Denver 200 PM TO 1000 PM 0.2" (80%) to 0.6" (40%) to 1.2" (20%) ISSUED Douglas 200 PM TO 1000 PM 0.2" (80%) to 0.6" (40%) to 1.2" (20%) ISSUED Jefferson 200 PM TO 1000 PM 0.2" (80%) to 0.6" (40%) to 1.2" (20%) ISSUED Foothills above 6500ft       Boulder Current TO 1000 PM SUN 0.2" (90%) to 0.6" (60%) to 1.2" (30%) ISSUED Douglas Current TO 1000 PM SUN 0.2" (90%) to 0.6" (60%) to 1.2" (30%) ISSUED Jefferson Current TO 1000 PM SUN 0.2" (90%) to 0.6" (60%) to 1.2" (30%) ISSUED MONITOR NATIONAL WEATHER SERVICE FOR SEVERE WEATHER STATEMENTS. MHFD Flood Prediction Center: 303-458-0789    F2P2 Website [http://udfcd.org/Flash+Flood+Prediction+Program]