Time: 1204 PM Tue August 13, 2024 Forecaster: Laura Smith ------------------------- MESSAGE 2 Flash Flood Prediction Program ------------------------- FLOOD WATCH The National Weather Service has issued a FLOOD WATCH for: the following counties: BOULDER (CITY OF BOULDER NOT AFFECTED), JEFFERSON, DOUGLAS including: ------------------------------------------------------------------------------ from: Current to 1100 PM . Duration: Current to 11:00 PM. The (NWS) National Weather Service has issued a Flood Watch for portions of the District above 6000 ft which includes the threat for flash flooding in the following counties: Boulder, Jefferson, Douglas Optimal Period: Flooding is most likely to occur from 2:00 PM until 8:00 PM. Prime time for flooding: 200 PM to 800 PM . ------------------------------------------------------------------------------ Forecast rainfall: Moderate storms will have the potential to produce rainfall rates of 0.30”-0.80” in 15-30 minutes. Strong thunderstorms will have the potential to produce rainfall rates of 0.80”-1.60” in 15-30 minutes. A slow-moving thunderstorm or large thunderstorm complex may produce up to 2.50” of rain in 45-60 minutes. ------------------------------------------------------------------------------ The most likely areas to be impacted by flooding are: X Mountain streams & floodplains; road crossings; canyon roads & highways; recreational trails; adjacent open space areas/campgrounds/parks; fishing access points & stream reaches; buildings near streams; utilities X Mountain locations subject to mud/rock/debris slide ------------------------------------------------------------------------------ Additional information: Excessive runoff and flooding of small streams and low-lying areas may occur. Strong thunderstorms may also contain large hail, gusty winds, and frequent cloud-to-ground lightning. The Quarry Fire Burn scar will be particularly susceptible to flooding. A Flood Watch means that flooding is possible within the watch area. This message is not intended for public dissemination. Please pass this information along to affected emergency response organizations (police, fire, public works, etc.) within your area. Also, please take appropriate actions to prepare for possible flooding. Further information will be provided to you as it becomes available. MHFD Flood Prediction Center: 303-458-0789    F2P2 Website [http://udfcd.org/Flash+Flood+Prediction+Program]