Thunderstorm Wind — Northumberland, Pennsylvania

2024-06-29 · near Herndon, Northumberland, Pennsylvania

Event narrative

A severe thunderstorm producing winds estimated at 60 mph knocked down multiple trees which blocked the northbound lanes of Route 147 approximately 1 mile northeast of Herndon.

Wider weather episode

A surface warm front stationed south in northern Maryland began moving northward into central Pennsylvania during the afternoon of June 29, 2024 and continued progressing north through the evening hours. Ample instability coupled with very favorable low-level shear parameters allowed for severe thunderstorms along and ahead of the warm front.

View location on OpenStreetMap → (40.7201, -76.8379)

Source: NOAA Storm Events Database, event_id 1191026. Narrative written by the NWS forecast office that issued the report.