UPDATE: This advisory has been expanded into Harford County and will now expire at 10 a.m.

Original story below…

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NOTTINGHAM, MD—The National Weather Service has issued a Dense Fog Advisory for Baltimore County.

The advisory will remain in effect until 9 a.m. on Monday.

Visibility in many areas has been reduced to 1/4-mile or less.

Hazardous driving conditions are possible due to reduced visibility.

Motorists are advised to slow down and reduce speed.