Upper Snake Highlands Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Dense Fog Advisory
Issued: 8:45 PM MST Dec. 14, 2017 – National Weather Service

... Dense fog advisory in effect until noon MST Friday...

The National Weather Service in Pocatello has issued a dense fog
advisory, which is in effect until noon MST Friday.

* Visibility... widespread areas of near zero visibility are
expected across the upper snake and Caribou Highlands. Towns
impacted include Soda Springs, McCammon, Irwin, Swan Valley,
Driggs, St. Anthony, and Island Park.

* Impacts... reduced visibility will make traveling at normal
Highway speeds hazardous. Dense freezing fog may create black
ice on roadways, especially bridges and overpasses, making them

Precautionary/preparedness actions...

A dense fog advisory means visibilities will frequently be
reduced to less than one quarter mile. If driving, slow down, use
your low beam or fog headlights, and leave plenty of distance
ahead of you.