PRIORITY DISSEMINATION RECOMMENDED

We have determined that low impact flooding is likely in Boulder County (City of Boulder affected)
including: from: Current to 500 PM.
Prime time for flooding: Current to 430 PM. Forecast rainfall: Weak to moderate thunderstorms will produce rainfall rates of 0.3-0.8” total in 10-30 minutes. Strong to severe thunderstorms will have the potential to produce rainfall rates of 0.8-1.6” total of rain 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

Additional Information: Excessive runoff is imminent or already occurring in Boulder County. 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.