Time: 902 AM Sat September 7, 2024 Forecaster: Justin Brooks ------------------------- Heavy Precipitation Outlook Flash Flood Prediction Program ------------------------- Warm, sunny and mostly dry today Northwesterly flow aloft will continue over the region today as high-pressure churns in the southwestern United States. Mild and dry conditions are expected throughout most of the day today under mostly sunny skies. A slight chance this evening for a few high-based showers and possibly a thunderstorm or two. Most, if not all precipitation will struggle to reach the surface, likely resulting in gusty sprinkles rather than any meaningful rainfall within the District. The best chance for storm activity will be from 6-10pm with skies clearing by midnight. A better chance for storm activity out on the eastern plains will keep a threat in and around the District this evening as gust fronts may move into the District from the east, potentially triggering storm development inside the District in the later evening hours. Overnight temperatures will drop into the low to mid 50s on the plains with upper 40s to around 50 degrees along the foothills. STORM RAINFALL POTENTIAL AND DURATION: Typical showers/weak thunderstorms will produce between a trace and 0.10” total in 10-30 minutes. WORST CASE SCENARIO: A moderate to strong shower/isolated thunderstorm will have the potential to produce 0.10”-0.30” total in 10-30 minutes. A LOOK AHEAD: Very little change in the overall dynamics Tomorrow will result in another mostly mild and dry day as high temperatures reach the mid to upper 80s. Another very slight chance for a few showers and possibly a thunderstorm or two along the higher terrain, however, minimal to no precipitation is expected inside the District at this time. Mild and dry conditions will continue throughout the day Monday with another slight chance of a few showers and thunderstorms in the evening. Any shower activity will remain light with no threat of heavy rainfall expected. LOCATION PRIME TIME 30-Minute Rainfall and % Probability Message Potential Plains       Adams 600 PM TO 1000 PM Trace (30%) to 0.1" (15%) to 0.3" (10%) NONE Arapahoe 600 PM TO 1000 PM Trace (30%) to 0.1" (15%) to 0.3" (10%) NONE Boulder 600 PM TO 1000 PM Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Broomfield 600 PM TO 1000 PM Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Denver 600 PM TO 1000 PM Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Douglas 600 PM TO 1000 PM Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Jefferson 600 PM TO 1000 PM Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Foothills above 6500ft       Boulder 600 PM TO 1000 PM Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Douglas 600 PM TO 1000 PM Trace (20%) to 0.1" (10%) to 0.3" (5%) NONE Jefferson 600 PM TO 1000 PM Trace (20%) to 0.1" (10%) 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]