Winter Weather — Clearfield, Pennsylvania
2025-11-28 · Clearfield, Pennsylvania
Event narrative
SNOW SQUALL. A snow squall was observed on Interstate 80 near Penfield, with temperatures dropping rapidly in heavy snow that reduced visibility below a quarter of a mile for over 20 minutes. A localized band of snowfall occurred just ahead of the squall, when road temperatures were approximately 34 degrees before falling to 27 degrees after the snow squall. After the squall occurred, multiple accidents were observed on Interstate 80 between mile markers 111 and 132. One of the accidents resulted in a minor injury to the driver of a vehicle when they lost control of their vehicle and veered off of the roadway, colliding with an embankment.
Wider weather episode
A potent area of low pressure across the northern Great Lakes tracking into southern Canada allowed for enhanced westerly flow to begin during the early morning hours of November 27, 2025. This westerly flow promoted lake effect snow to occur across northwestern Pennsylvania during the early morning hours that continued throughout the day. The cold front associated with this area of low pressure tracked across the region during the morning and afternoon hours of November 28th, with ample instability and lift allowing for snow squalls to form across western Pennsylvania before moving into slightly more stable air and lowering the snow squall threat across south-central and eastern Pennsylvania. Visibilities within snow squalls were near-zero with multiple accidents observed due to icy road conditions as roadway temperatures above freezing dropped below freezing. Cold temperatures in the wake of the cold front allowed for continued icy roadways across Clearfield County, where multiple additional accidents were observed. Westerly flow in the wake of the cold front allowed for continued lake effect snow showers through the early morning hours of November 29th, when flow shifted more southwesterly, pushing lake effect snow into New York State.
Source: NOAA Storm Events Database, event_id 1296347. Narrative written by the NWS forecast office that issued the report.