M-1 Low Impact Flooding

Time: 111 PM Thu May 18, 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: ARAPAHOE, DENVER, ALL OF ADAMS, ADAMS including: THE CITY OF AURORA, DIA ------------------------------------------------------------------------------ from: Current to 300 PM . Prime time for flooding: Current to 245 AM . ------------------------------------------------------------------------------ Forecast rainfall: Moderate to strong thunderstorms will have the potential to produce 0.4-1.2" in 10-30 minutes. A slow moving thunderstorm or a large thunderstorm complex may result in up to 1.8" in 45-60 minutes. ------------------------------------------------------------------------------ The most likely areas to be impacted by flooding are: 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 Adams County, Denver County, DIA, Arapahoe County, and the City of Aurora. 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]