M-1 Low Impact Flooding

Time: 735 PM Mon July 31, 2023 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 ARAPAHOE COUNTY including: THE CITY OF AURORA ------------------------------------------------------------------------------ from: Current to 930 PM . Prime time for flooding: Current to 900 PM . ------------------------------------------------------------------------------ Forecast rainfall: Strong thunderstorms will produce rainfall rates of 0.80-2.00” in 10-30 minutes. A slower moving strong thunderstorm or training of thunderstorm cells may result in up to 3.50" of rain in 45-75 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 Arapahoe County and the City of Aurora. Strong thunderstorms may also contain hail, gusty winds and frequent cloud-to-ground lightning. Message 2's will still continue valid until midnight. 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]