A line of thunderstorms moving across Lake Superior produced strong to severe wind gusts on the 29th.

Marine Thunderstorm Wind in UPPER ENTRANCE OF PORTAGE CANAL TO EAGLE RIVER MI, LAKE SUPERIOR
From 29-JUN-18 11:00:00 to 29-JUN-18 11:20:00 (EST-5)
Location: MCCLAIN STATE PARK
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

The 45023 Lake Superior buoy west of McLain State Park measured wind gusts between 40 and 47 mph through the period.

Marine Thunderstorm Wind in SAXON HARBOR WI TO UPPER ENTRANCE OF PORTAGE CANAL MI 5NM OFFSHORE TO US/CANADIAN BORDER INC ISLE ROYAL NP, LAKE SUPERIOR
From 29-JUN-18 09:45:00 to 29-JUN-18 09:50:00 (EST-5)
Location: ROCK OF AGES LIGHT
Magnitude: 47.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

Measured peak thunderstorm wind gust at Rock of Ages Light C-MAN station.

Marine Thunderstorm Wind in SAXON HARBOR WI TO UPPER ENTRANCE OF PORTAGE CANAL MI 5NM OFFSHORE TO US/CANADIAN BORDER INC ISLE ROYAL NP, LAKE SUPERIOR
From 29-JUN-18 09:50:00 to 29-JUN-18 09:55:00 (EST-5)
Location: ONTONAGON
Magnitude: 47.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Measured peak thunderstorm wind gust of 54 mph at the western Lake Superior buoy 45006.  Sustained wind was 42 mph.

Marine Thunderstorm Wind in SAXON HARBOR WI TO UPPER ENTRANCE OF PORTAGE CANAL MI 5NM OFFSHORE TO US/CANADIAN BORDER INC ISLE ROYAL NP, LAKE SUPERIOR
From 29-JUN-18 10:24:00 to 29-JUN-18 10:29:00 (EST-5)
Location: PASSAGE ISLAND LIGHT
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Measured peak thunderstorm wind gust at the Ojibway RAWS site on Isle Royale NP.

Marine Thunderstorm Wind in BLACK RIVER TO ONTONAGON MI, LAKE SUPERIOR
From 29-JUN-18 10:00:00 to 29-JUN-18 10:05:00 (EST-5)
Location: UNION BAY BEACH
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mariner

Peak thunderstorm wind gust of 70 mph measured by a ship's observing equipment over the open water of western Lake Superior.

Waterspout in SAXON HARBOR WI TO BLACK RIVER MI, LAKE SUPERIOR
From 29-JUN-18 09:40:00 to 29-JUN-18 09:50:00 (EST-5)
Location: LITTLE GIRLS POINT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Video of a waterspout off Little Girls Point was posted on social media.

Marine Thunderstorm Wind in UPPER ENTRANCE OF PORTAGE CANAL TO EAGLE RIVER MI, LAKE SUPERIOR
From 29-JUN-18 10:50:00 to 29-JUN-18 11:00:00 (EST-5)
Location: MCCLAIN STATE PARK
Magnitude: 36.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Peak thunderstorm wind gust measured at the Portage Canal observing site.

Marine Thunderstorm Wind in UPPER ENTRANCE OF PORTAGE CANAL TO EAGLE RIVER MI, LAKE SUPERIOR
From 29-JUN-18 11:00:00 to 29-JUN-18 11:05:00 (EST-5)
Location: MCCLAIN STATE PARK
Magnitude: 41.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

Measured peak thunderstorm wind gust at buoy 45023 west of Portage Canal.

Marine Thunderstorm Wind in SAXON HARBOR WI TO BLACK RIVER MI, LAKE SUPERIOR
From 29-JUN-18 09:44:00 to 29-JUN-18 09:50:00 (EST-5)
Location: SAXON HARBOR WI
Magnitude: 35.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Peak thunderstorm wind gust measured at the Saxon Harbor GLOS site.

Marine Thunderstorm Wind in ONTONAGON TO UPPER ENTRANCE OF PORTAGE CANAL MI, LAKE SUPERIOR
From 29-JUN-18 10:37:00 to 29-JUN-18 10:41:00 (EST-5)
Location: BEACON HILL
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The spotter at Freda measured thunderstorm wind gusts between 50 and 60 mph at this time.

Marine Thunderstorm Wind in UPPER ENTRANCE OF PORTAGE CANAL TO EAGLE RIVER MI, LAKE SUPERIOR
From 29-JUN-18 10:45:00 to 29-JUN-18 10:50:00 (EST-5)
Location: KEWEENAW UPPER ENTRY LIGHT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Three trees were downed at McClain State Park.  Time was estimated from radar.

Marine Thunderstorm Wind in ONTONAGON TO UPPER ENTRANCE OF PORTAGE CANAL MI, LAKE SUPERIOR
From 29-JUN-18 10:45:00 to 29-JUN-18 10:50:00 (EST-5)
Location: KEWEENAW UPR ENT LT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Three trees were downed at McClain State Park.  Time was estimated from radar.

Marine Thunderstorm Wind in POINT ISABELLE TO LOWER ENTRANCE OF PORTAGE CANAL MI, LAKE SUPERIOR
From 29-JUN-18 11:10:00 to 29-JUN-18 11:15:00 (EST-5)
Location: TRAVERSE BAY
Magnitude: 40.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Traverse Bay GLOS measured a 46 mph thunderstorm wind gust.

Marine Thunderstorm Wind in POINT ISABELLE TO LOWER ENTRANCE OF PORTAGE CANAL MI, LAKE SUPERIOR
From 29-JUN-18 11:10:00 to 29-JUN-18 11:15:00 (EST-5)
Location: KEWEENAW LOWER ENTRANCE LIGHT
Magnitude: 39.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Buoy

The Lake Superior buoy 45025 in Keweenaw Bay measured a thunderstorm wind gust of 45 mph.

Marine Thunderstorm Wind in PORTAGE LAKE TO HURON IS MI TO LOWER ENTRANCE OF PORTAGE CANAL TO HURON IS INC KEWEENAW AND HURON BAYS, LAKE SUPERIOR
From 29-JUN-18 11:05:00 to 29-JUN-18 11:15:00 (EST-5)
Location: ROCK BEACH POINT
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were down on power lines in Pequaming.  The source of the report is State Police Regional Dispatch.

Marine Thunderstorm Wind in ONTONAGON TO UPPER ENTRANCE OF PORTAGE CANAL MI, LAKE SUPERIOR
From 29-JUN-18 10:20:00 to 29-JUN-18 10:25:00 (EST-5)
Location: ONTONAGON LIGHT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Measured peak thunderstorm wind gust of 57 mph at the Ontonagon DOT observing station.