Dense Fog Advisory Issued for Four Ohio Counties Until 10 a.m.
A Dense Fog Advisory has been issued by the National Weather Service for Auglaize, Logan, Mercer, and Shelby counties until 10 a.m., warning of visibility potentially less than a quarter mile and advising drivers to exercise caution.
Dayton, OH, October 21, 2026 —
The National Weather Service has issued a Dense Fog Advisory for Auglaize, Logan, Mercer and Shelby counties through 10 a.m. The advisory warns that visibility could fall below a quarter mile and advises drivers to exercise caution.
The warning identifies the four counties covered and gives 10 a.m. as its end time. It does not specify when the advisory began or provide a calendar date. The information provided also does not give county-by-county visibility estimates or describe how conditions may change before the advisory expires.
Drivers in the affected counties are advised to use caution while the advisory is in effect. The summary does not provide specific directions for travel, identify particular roads, or report any crashes, road closures or other effects related to the fog. It also does not state whether any additional advisories have been issued.
The National Weather Service advisory describes the possibility of visibility below a quarter mile; it does not indicate that visibility will be at that level throughout all four counties. No further details about the fog’s extent or expected development were provided.
Story summarized from the original created by John Tisdell, WHIO.com on www.whio.com, see more information here.
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