We have determined that street and small stream flooding is possible in the following counties: Boulder (City of Boulder affected, Four Mile Burn Area affected), Jefferson, Broomfield, Douglas, Adams, Denver, Arapahoe
including: DIA, the City of Aurora, Arvada, Wheat Ridge, Lakewood from: 1200 PM to 900 PM.
Prime time for flooding: 100 PM to 800 PM. Forecast rainfall: Moderate to strong thunderstorms will have the potential to produce 0.6-1.4" in 10-30 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: A large slow moving thunderstorm or training of thunderstorm cells may produce up to 3.0" in 90 minutes or less. Strong thunderstorms may also produce large hail and gusty straight-line winds.

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.