Thunderstorm Wind — Montour, Pennsylvania

2014-07-03 · near Danville, Montour, Pennsylvania

Event narrative

Thunderstorm winds estimated near 60 mph knocked down trees in Danville.

Wider weather episode

A trough over the Great Lakes/Ohio Valley progressed slowly east across the Mid-Atlantic and New England states during the afternoon and evening hours. Meanwhile at lower levels, a secondary cold frontal surge crossed the central Appalachians triggering another round of diurnal storms. Strong heating of a very moist, high PW airmass along with moderate deep shear and sufficient large scale forcing promoted organized thunderstorm clusters/bands which produced numerous reports of damaging winds and isolated, marginally severe hail.

View location on OpenStreetMap → (40.9600, -76.6100)

Source: NOAA Storm Events Database, event_id 521065. Narrative written by the NWS forecast office that issued the report.