Lake Erie remained in the warm sector during the late evening of the 20th through early morning of the 21st as a surface low moved northeastward from the Upper Mississippi Valley to the Straits of Mackinac. Multiple squall lines moved eastward over and near Lake Erie, and produced peak wind gusts of at least gale-force along the southern lakeshore. These storms encountered weak to moderate MUCAPE, moderate DCAPE, and moderate effective bulk shear.

Marine Thunderstorm Wind in WILLOWICK TO GENEVA-ON-THE-LAKE OH, LAKE ERIE
From 20-JUN-21 23:41:00 to 20-JUN-21 23:41:00 (EST-5)
Location: WILLOWICK
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Peak gust of 49 mph following the passage of a downshear gust front at Fairport Harbor C-Man Station (i.e. FAIO1). This gust preceded the arrival of showers and thunderstorms by nearly 25 minutes.

Marine Thunderstorm Wind in AVON POINT TO WILLOWICK OH, LAKE ERIE
From 21-JUN-21 05:18:00 to 21-JUN-21 05:18:00 (EST-5)
Location: WILLOWICK
Magnitude: 44.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Peak thunderstorm gust of 51 mph at Burke Lakefront Airport ASOS in Cleveland.

Marine Thunderstorm Wind in VERMILION TO AVON POINT OH, LAKE ERIE
From 21-JUN-21 04:50:00 to 21-JUN-21 04:50:00 (EST-5)
Location: AVON POINT
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Lorain Harbor C-MAN Station (i.e. LORO1) recorded a peak gust of 75 mph from thunderstorm.

Marine Thunderstorm Wind in AVON POINT TO WILLOWICK OH, LAKE ERIE
From 21-JUN-21 05:20:00 to 21-JUN-21 05:20:00 (EST-5)
Location: WILLOWICK
Magnitude: 49.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Cleveland C-MAN Station (i.e. CNDO1) recorded a peak gust of 57 mph from a thunderstorm.

Marine Thunderstorm Wind in CONNEAUT OH TO RIPLEY NY, LAKE ERIE
From 21-JUN-21 00:42:00 to 21-JUN-21 00:42:00 (EST-5)
Location: RIPLEY
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Peak gust of 41 mph measured at Erie C-MAN Station (i.e. EREP1) with passage of line of showers and thunderstorms.

Marine Thunderstorm Wind in AVON POINT TO WILLOWICK OH, LAKE ERIE
From 21-JUN-21 01:20:00 to 21-JUN-21 01:20:00 (EST-5)
Location: WILLOWICK
Magnitude: 34.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Peak gust of 39 mph at Edgewater Beach Weather Station in Cleveland. This gust followed the passage of a downshear gust front generated by nearby showers and thunderstorms.

Marine Thunderstorm Wind in MAUMEE BAY TO RENO BEACH OH, LAKE ERIE
From 21-JUN-21 03:24:00 to 21-JUN-21 03:24:00 (EST-5)
Location: MAUMEE BAY
Magnitude: 37.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Peak convective gust of 43 mph at Toledo C-MAN Station (i.e. THRO1).

Marine Thunderstorm Wind in MAUMEE BAY TO RENO BEACH OH, LAKE ERIE
From 21-JUN-21 03:40:00 to 21-JUN-21 03:40:00 (EST-5)
Location: RENO BEACH
Magnitude: 49.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Peak convective gust of 56 mph at Toledo Crib C-MAN Station (i.e. TWCO1).

Marine Thunderstorm Wind in THE ISLANDS TO VERMILION OH, LAKE ERIE
From 21-JUN-21 04:27:00 to 21-JUN-21 04:27:00 (EST-5)
Location: VERMILION
Magnitude: 38.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Peak convective gust of 44 mph at Huron Harbor Light C-MAN Station (i.e. HHLO1).