Dense Fog Advisory issued May 27 at 12:23AM CDT until May 27 at 9:00AM CDT by NWS Memphis
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility one half mile or less in in dense fog. * WHERE...Portions of North Mississippi and West Tennessee. * WHEN...Until 9 AM CDT Thursday. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...Visibilities will vary over changing terrain and may fall to one eighth mile or less in river valleys.
A warning is issued when a hazardous weather or hydrologic event is occurring, imminent or likely.
A watch is used when the risk of a hazardous weather or hydrologic event has increased significantly, but its occurrence, location or timing is still uncertain.
An advisory is issued when a hazardous weather or hydrologic event is occurring, imminent or likely.