Time: 335 PM Wed May 10, 2023 Forecaster: Brad Simmons ------------------------- MESSAGE 1 Flash Flood Prediction Program ------------------------- **** LOW IMPACT FLOODING **** PRIORITY DISSEMINATION RECOMMENDED We have determined that low impact flooding is likely in the following counties: JEFFERSON, DENVER, ARAPAHOE including: THE CITY OF AURORA, ARVADA, WHEAT RIDGE, LAKEWOOD ------------------------------------------------------------------------------ from: Current to 530 PM . Prime time for flooding: Current to 500 PM . ------------------------------------------------------------------------------ Forecast rainfall: Strong thunderstorms will have the potential to produce heavy rainfall rates of 0.4-1.2" in 10-30 minutes. Training of thunderstorm cells may result in up to 2.2" of heavy 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 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 ------------------------------------------------------------------------------ Additional Information: Excessive runoff is imminent or already occurring in Jefferson County, Denver County, Arapahoe County, the City of Aurora, Arvada, Wheat Ridge, and Lakewood. Large hail, gusty winds, frequent cloud-to-ground lightning and possibly an isolated tornado may also accompany strong thunderstorm cells. 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]