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: 730 PM to 1159 PM.
Prime time for flooding: 800 PM to 1130 PM. Forecast rainfall: Strong thunderstorms may produce rainfall between 0.40-1.00" 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: Back building or training of strong thunderstorm cells may produce up to 2.2" in 45-90 minutes. Large hail and gusty straight-line winds may also accompany strong thunderstorm cells.

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.