PENNSYLVANIA — A Dense Fog Advisory has been issued for portions of southeastern Pennsylvania, with visibility expected to drop to as low as one-quarter mile overnight into Wednesday morning, according to the National Weather Service.
The advisory, issued at 1:15 p.m. Tuesday, is in effect from 10 p.m. Tuesday through 10 a.m. Wednesday, Feb. 18, 2026. Forecasters say visibility could range between one-quarter and one-half mile in areas of dense fog.
In Pennsylvania, the advisory includes Carbon, Monroe, Berks, Lehigh, Northampton, Delaware and Philadelphia counties, along with western and eastern portions of Chester, Montgomery and Bucks counties. Cities affected include Reading, Allentown, Bethlehem, Easton, Jim Thorpe, Stroudsburg, West Chester, Kennett Square, Norristown, Lansdale, Doylestown, Perkasie, Chalfont, Pottstown, Media and Philadelphia…