Time: 826 PM Sat June 29, 2024 Forecaster: Justin Brooks ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- MESSAGE 1’S WILL BE ALLOWED TO EXPIRE AT 9:00PM Message 1’s will be allowed to expire at 9:00 PM as the threat of heavy rainfall has come to an end. A few strong thunderstorms impacted the Denver Metro earlier this afternoon and have since moved eastward and out of the District. Some lingering showers persist for portions of the District at this time and will likely remain into the evening hours. There will be a slight chance for off and on showers and possibly a weak thunderstorm or two later this evening. The best chance for additional showers will be between now-midnight with skies partially clearing through the overnight. Overnight temperatures will drop into the low 60s for the plains with mid to upper 50s along the foothills. Partly cloudy sky conditions are expected overnight and through daybreak tomorrow. Tomorrow will bring another chance for moderate to heavy rainfall with a few rounds of storms possible in the afternoon and into the evening with the potential for a few showers to linger into the late evening hours. STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce a trace to 0.20" total in 10-30 minutes. A moderate to strong shower/thunderstorm will produce 0.20-0.40" total in 10- 30 minutes. WORST CASE SCENARIO: If a stationary, strong thunderstorm is produced it will have the potential to have between 0.40- 0.80" total in 30-60 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Denver County 1 Current TO 900 PM Current TO 830 PM Adams County 1 Current TO 900 PM Current TO 830 PM Douglas County 1 Current TO 900 PM Current TO 830 PM Broomfield County 1 Current TO 900 PM Current TO 830 PM Jefferson County 1 Current TO 900 PM Current TO 830 PM Boulder County 1 Current TO 900 PM Current TO 830 PM Lakewood 1 Current TO 900 PM Current TO 830 PM Wheat Ridge 1 Current TO 900 PM Current TO 830 PM Arvada 1 Current TO 900 PM Current TO 830 PM the City of Aurora 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 County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 1159 PM SAT Trace (60%) to 0.2" (30%) to 0.4" (15%) NONE Arapahoe Current TO 1159 PM SAT Trace (60%) to 0.2" (30%) to 0.4" (15%) NONE Boulder Current TO 1159 PM SAT Trace (60%) to 0.2" (30%) to 0.4" (15%) NONE Broomfield Current TO 1159 PM SAT Trace (50%) to 0.2" (25%) to 0.4" (10%) NONE Denver Current TO 1159 PM SAT Trace (60%) to 0.2" (30%) to 0.4" (15%) NONE Douglas Current TO 1159 PM SAT Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Jefferson Current TO 1159 PM SAT Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Foothills above 6500ft       Boulder Current TO 1159 PM SAT Trace (50%) to 0.2" (30%) to 0.4" (15%) NONE Douglas Current TO 1159 PM SAT Trace (40%) to 0.2" (20%) to 0.4" (10%) NONE Jefferson Current TO 1159 PM SAT Trace (50%) to 0.2" (30%) to 0.4" (15%) 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]