M-1 Low Impact Flooding Update

Time: 405 PM Tue July 19, 2022 Forecaster: Brad Simmons ------------------------- MESSAGE 1 UPDATE 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 530 PM . Prime time for flooding: Current to 500 PM . ------------------------------------------------------------------------------ Forecast rainfall: Moderate to strong thunderstorms will have the potential to produce rainfall rates of 0.4-1.0" in 10-30 minutes. A slower moving thunderstorm or briefly anchored thunderstorm may result in up to 1.5" of heavy rainfall 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 over Arapahoe County including portions of Aurora. Thunderstorm cell is currently expected to track along Adams/Arapahoe County line 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]