Flash Flood Prediction Program

Time: 901 PM Sun June 30, 2024 Forecaster: Aaron O ------------------------- Internal Message Status Flash Flood Prediction Program ------------------------- MESSAGE 1’S WILL BE ALLOWED TO EXPIRE AT 10:00PM Message 1’s will be allowed to expire at 10:00 PM as the threat of heavy rainfall has come to an end. Several strong thunderstorms have affected areas south of the District, creating an environment over the District that inhibits any strong thunderstorms from forming. Some lingering showers persist for portions of the District at this time and will likely leave in the hour or two. 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 possible through the overnight hours with on and off showers continuing into the morning. Overnight temperatures will drop into the low 60s for the plains with mid to upper 50s along the foothills. Tomorrow will bring showers and isolated thunderstorms in the morning hours, with precipitation chances ending by the early to mid afternoon. Rainfall looks to remain light throughout tomorrow. STORM RAINFALL POTENTIAL AND DURATION: Typical showers will produce a trace to 0.10" total in 10-30 minutes. A moderate to strong shower/thunderstorm will produce 0.10-0.25" total in 10-30 minutes. WORST CASE SCENARIO: If a stationary, strong thunderstorm is produced it will have the potential to have between 0.25-0.50" total in 30-60 minutes. COUNTY MESSAGE VALID TIMES PRIME TIME Lakewood 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 the City of Aurora 1 Current TO 1000 PM Current TO 930 PM Arapahoe County 1 Current TO 1000 PM Current TO 930 PM DIA 1 Current TO 1000 PM Current TO 930 PM Denver County 1 Current TO 1000 PM Current TO 930 PM Adams County 1 Current TO 1000 PM Current TO 930 PM 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 County-specific Quantitative Precipitation Outlook PRECIPITATION TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams Current TO 600 AM MON Trace (50%) to 0.2" (20%) to 0.5" (5%) NONE Arapahoe Current TO 600 AM MON Trace (50%) to 0.2" (20%) to 0.5" (5%) NONE Boulder Current TO 600 AM MON Trace (50%) to 0.2" (20%) to 0.5" (5%) NONE Broomfield Current TO 600 AM MON Trace (50%) to 0.2" (20%) to 0.5" (5%) NONE Denver Current TO 600 AM MON Trace (50%) to 0.2" (20%) to 0.5" (5%) NONE Douglas Current TO 600 AM MON Trace (50%) to 0.2" (20%) to 0.5" (5%) NONE Jefferson Current TO 600 AM MON Trace (50%) to 0.2" (20%) to 0.5" (5%) NONE Foothills above 6500ft       Boulder Current TO 600 AM MON Trace (50%) to 0.2" (20%) to 0.5" (5%) NONE Douglas Current TO 600 AM MON Trace (50%) to 0.2" (20%) to 0.5" (5%) NONE Jefferson Current TO 600 AM MON Trace (50%) to 0.2" (20%) to 0.5" (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]