Time: 649 PM Sun July 25, 2021 Forecaster: Justin Brooks ------------------------- MESSAGE 1 Flash Flood Prediction Program ------------------------- LOW IMPACT FLOODING PRIORITY DISSEMINATION RECOMMENDED We have determined that low impact flooding is likely in BOULDER COUNTY (CITY OF BOULDER AFFECTED, FOUR MILE BURN AREA AFFECTED) including: ------------------------------------------------------------------------------ from: Current to 830 PM . Prime time for flooding: Current to 800 PM . ------------------------------------------------------------------------------ Forecast rainfall: Moderate thunderstorms will have the potential to produce 0.2-0.8" of rain in 10-30 minutes. A strong thunderstorm will have the potential to produce 0.4-1.5" in 10-30 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 Urban streams/gulches; road crossings; recreational trails; adjacent open space areas/campgrounds/parks; floodplain properties; utilities X Urban streets, intersections, low lying areas, known trouble spots X Mountain locations subject to mud/rock/debris slide ------------------------------------------------------------------------------ Additional Information: Strong thunderstorms may also contain large hail, gusty winds and frequent cloud-to-ground lightning. 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]