OFFICIAL WEATHER ALERT · ACTIVE

Dense Fog Advisory

Dense Fog Advisory issued November 6 at 1:36AM MST until November 6 at 9:00AM MST by NWS Rapid City SD

Moderate

What is happening

* WHAT...Visibility less than one quarter mile in dense fog. Visibilities will rapidly change, especially in low spots. * WHERE...Portions of northwestern, south central, and southwestern South Dakota. * WHEN...Until 9 AM MST /10 AM CST/ this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

Official instructions

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.

Original message from NWS Rapid City SD. Wording is preserved from the source.

Source information

Open official source

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Understand the warning