We have determined that street and small stream flooding is possible in the following counties: Broomfield, Adams, Denver, Arapahoe
including: DIA, the City of Aurora from: 100 PM to 1159 PM.
Prime time for flooding: 200 PM to 1000 PM. Forecast rainfall: Weak to moderate thunderstorms will produce rainfall rates of 0.3-0.8" in 10-30 minutes. Strong thunderstorms will have the potential to produce heavy rainfall rates of 0.8-2.2" in 10-30 minutes. Training of thunderstorm cells or a large/slower moving thunderstorm may produce up to 3.5" of rain in 45-75 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: 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.