Lower Columbia Basin of Oregon Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Dense Fog Advisory, Air Stagnation Advisory
Issued: 8:07 AM PST Nov. 18, 2018 – National Weather Service

... Dense fog advisory in effect until noon PST today...
... Air stagnation advisory remains in effect until 1 PM PST

The National Weather Service in Pendleton has issued a dense fog
advisory... which is in effect until noon PST today.

* Visibilities... one quarter mile or less at times mainly along
the Columbia River from Umatilla to Boardman.

* Timing... fog will begin lifting later this morning.

* Impacts... limited visibilities will make travel very difficult.

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 headlights... and leave plenty of distance ahead of you.

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