Hail in Westmoreland County, Pennsylvania

Hail caused holes in siding along west side of a house, with dented cars also reported. Similar car damage to that seen in Fayette County was also likely, with possibly up to 400 cars damaged.

A strong, occluding surface low crossed the Great Lakes on November 27th. After morning rain, instability in the form of around 500 J/kg of mean-layer CAPE was able to develop in the Middle Ohio Valley and advect northeast into northern West Virginia and southwest Pennsylvania. A strongly sheared environment was also present. Strong low-level flow helped to support a damaging-wind threat, while cold temperatures aloft and favorable deep-layer shear also supported large hail, which is unusual for late November. In fact, severe conditions were locally quite signficant, with one report of an 87 MPH gust in a mesovortex, as well as hail reaching two inches in diameter. Many reports of downed trees and power lines were received, with some generally minor structural damage as well. In Perry Township, estimates were that up to 400 vehicles were damaged by hail, with an estimated 1.2 million dollars worth of damage. A similar amount of car damage also likely occurred in Westmoreland County.