Marine Thunderstorm Wind — Conneaut Oh To Ripley Ny, Lake Erie

2021-09-12 · near Ripley, Conneaut Oh To Ripley Ny, Lake Erie

Event narrative

Erie C-MAN Station (EREP1) recorded a peak gust of 47 mph from thunderstorms.

Wider weather episode

A nearly-stationary front was draped in vicinity of the major axis of Lake Erie during the early evening of September 12th through the wee hours of the 13th as one low drifted northeastward over western Kansas and another remained nearly-stationary in vicinity of Labrador. A bow echo moved east-southeastward across central and eastern Lake Erie during the evening of the 12th and produced a couple of gale-force peak wind gusts along the Erie County, PA lakeshore during the 10 PM EST hour. The bow echo encountered weak to moderate MUCAPE and DCAPE, respectively, and moderate to strong effective bulk shear.

The front then wavered in vicinity of Lake Erie through the late evening of the 13th as the Kansas low moved toward Iowa and consolidated with another low moving from western Montana. Simultaneously, the Canadian low drifted eastward and offshore Labrador. The front then moved northeastward from Lake Erie as a warm front during the morning of the 14th and allowed the warm sector to overspread all of Lake Erie through the early evening as the consolidated low moved from Iowa toward central Ontario. The low then moved farther northeastward to northern Quebec by the early morning of the 15th, which is when the trailing cold front began to move eastward across the western basin of Lake Erie.

A squall line outpaced the cold front and moved generally eastward across Lake Erie during the late evening of the 14th. This line of showers and thunderstorms produced gale-force peak wind gusts along the northern Ohio shore. The showers and storms encountered moderate MUCAPE and DCAPE, and moderate to strong effective bulk shear.

View location on OpenStreetMap → (42.1720, -80.0980)

Source: NOAA Storm Events Database, event_id 984339. Narrative written by the NWS forecast office that issued the report.