# HEADLINE
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DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING
# DETAILS
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WHAT
Visibility one quarter mile or less in dense fog.
WHERE
Lake IL County. The worst conditions are expected in northeastern portions of the county and near the Wisconsin state line.
WHEN
Until 9 AM CDT this morning.
IMPACTS
Low visibility could make driving conditions hazardous.
ISSUED AT
Friday, October 23, 2026 at 1:50 AM CDT
ISSUED BY
National Weather Service Chicago IL
HEADER
URGENT - WEATHER MESSAGE
# PRECAUTIONARY/PREPAREDNESS ACTIONS
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If driving, slow down, use your low-beam headlights, and leave plenty of distance ahead of you.
# AREAS AFFECTED
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Lake IL
Including the cities of Gurnee, Buffalo Grove, Waukegan, and Mundelein
