A weather alert was issued by the National Weather Service on Thursday at 2:17 a.m. for patchy fog until 9 a.m. for Western Chester, Eastern Chester, Western Montgomery and Eastern Montgomery as well as Berks, Lehigh, Northampton, Delaware, Philadelphia and Bucks counties.

"Patchy fog has developed this morning across the area. While the fog is not expected to be widespread, it could become locally dense with visibilities under one quarter mile. Use caution when traveling and be prepared for changes in visibility," comments the weather service.

Guidance from the weather service for navigating foggy conditions

If you must drive in foggy conditions, keep the following safety tips in mind:

Reduce speed:

Slow down and allocate extra time for your trip to reach your destination safely.

Vi

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