We have determined that street and small stream flooding is possible in the following counties: Boulder (City of Boulder affected), Jefferson, Broomfield, Douglas, Adams, Denver, Arapahoe
including: DIA, the City of Aurora, Arvada, Wheat Ridge, Lakewood from: 400 PM to 900 PM.
Prime time for flooding: 500 PM to 800 PM. Forecast rainfall: Thunderstorms today have the potential to produce up to 0.60” in 10-30 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

X Mountain locations subject to mud/rock/debris slide

Additional Information: A slow-moving, strong thunderstorm may be capable of producing up to 1.25” or more in 30 minutes or less.

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.