Pittsburgh, Pennsylvania – A Cold Weather Advisory is in effect for portions of western Pennsylvania overnight into Monday morning, as dangerously low temperatures threaten travel, infrastructure, and personal safety.
According to the National Weather Service in Pittsburgh, overnight temperatures are expected to fall 5 to 15 degrees below zero in several counties, with the coldest readings occurring before sunrise Monday. The advisory is effective from 10 p.m. tonight through 10 a.m. Monday.
Forecast guidance shows a 40% to 80% chance of temperatures dropping below -10°F across interior western Pennsylvania, including areas near Butler, Clarion, Indiana, and Jefferson counties. Urban centers, including the Pittsburgh metro, are expected to remain slightly warmer but still well below zero.
The extreme cold increases the risk of frostbite within minutes, particularly for exposed skin, and may lead to vehicle starting failures and frozen pipes. Commuters traveling early Monday along Interstates 79, 76, 376, and 80, as well as major routes such as U.S. Route 22 and Route 28, may encounter vehicles that fail to start and reduced roadside response times due to the cold.
The National Weather Service advises residents to limit time outdoors, wear layered winter clothing, and ensure pets are kept indoors. Drivers are urged to check batteries, carry emergency supplies, and allow extra time for morning travel.
This advisory follows a prolonged period of Arctic air settling over the region, with gradual moderation expected later Monday afternoon. However, officials caution that cold-related impacts may persist into the start of the workweek.
This advisory may especially affect early-morning commuters, students, and workers with outdoor job duties.
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