Upper disturbances moving through the moist and unstable air mass produced strong to severe thunderstorms over portions of Lake Superior from the evening of the 5th into the morning of the 6th.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MQT wrote it up.
Upper disturbances moving through the moist and unstable air mass produced strong to severe thunderstorms over portions of Lake Superior from the evening of the 5th into the morning of the 6th.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Marquette, MI wrote its last area forecast discussion before the first event at Sep 5, 6:49 PM EST, 11 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service Marquette MI 323 PM EDT Tue Sep 5 2023 MIZ001>007-009>013-084-085-061930- Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce- Gogebic-Iron-Dickinson-Menominee-Delta-Southern Houghton- Northern Schoolcraft- 323 PM EDT Tue Sep 5 2023 /223 PM CDT Tue Sep 5 2023/ This Hazardous Weather Outlook is for portions of central Upper Michigan and western Upper Michigan. .DAY ONE...Tonight Thunderstorms are expected later today through tonight. Some could become strong to severe at times with large hail and damaging winds, especially across the western third of Upper Michigan. .DAYS TWO THROUGH SEVEN...Wednesday through Monday There is a chance of thunderstorms through Wednesday night and across the far eastern counties on Thursday. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. MIZ014-061930- Southern Schoolcraft- 323 PM EDT Tue Sep 5 2023 This Hazardous Weather Outlook is for portions of central Upper Michigan. .DAY ONE...Tonight There is a moderate swim risk for the Lake Michigan beaches of southern Schoolcraft County through this evening. See the latest Surf Zone Forecast and beach hazards statement for additional details. Thunderstorms are possible later today through tonight. Some of the storms could become strong with gusty winds and hail. .DAYS TWO THROUGH SEVEN...Wednesday through Monday There are thunderstorm chances through Thursday. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. LSZ162-240>251-263>267-061930- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM-Saxon Harbor WI to Black River MI- Black River to Ontonagon MI- Ontonagon to Upper Entrance of Portage Canal MI- Upper Entrance of Portage Canal to Eagle River MI- Eagle River to Manitou Island MI- Manitou Island to Point Isabelle MI- Point Isabelle to Lower Entrance of Portage Canal MI- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays-Huron Islands to Marquette MI- Marquette to Munising MI-Munising to Grand Marais MI- Grand Marais to Whitefish Point MI- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 323 PM EDT Tue Sep 5 2023 /223 PM CDT Tue Sep 5 2023/ This Hazardous Weather Outlook is for portions of Central Lake Superior...Eastern Lake Superior and Western Lake Superior. .DAY ONE...Tonight Thunderstorms are possible from west to east late today through tonight. Some of the storms could become severe with damaging winds and large hail. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Thunderstorms are possible through Wednesday night. North gales of 35 to 40 knots are possible Wednesday afternoon into Thursday morning across north central Lake Superior. See the latest gale watch for further details. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. LMZ221-248-250-061930- Green Bay North of line from Cedar River MI to Rock Island Passage-Seul Choix Point to Point Detour MI- 5NM East of a line from Fairport MI to Rock Island Passage- 323 PM EDT Tue Sep 5 2023 This Hazardous Weather Outlook is for portions of Northern Lake Michigan. .DAY ONE...Tonight Thunderstorms are possible late today through tonight. Some could become strong at times with gusty winds and hail. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Thunderstorms are possible through Thursday. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. LC
The Duluth radar (KDLH), 185 km away, was scanning. The volume nearest the first event began at 00:04 UTC.
8 marine thunderstorm wind. Local standard time, as filed.
Peak thunderstorm wind gust at the western Lake Superior buoy (45006).
Peak thunderstorm wind gust at Rock of Ages Light C-MAN station.
A peak thunderstorm wind gust measured by the Ojibway RAWS station on Isle Royale.
A peak thunderstorm wind gust measured by the Ojibway RAWS station on Isle Royale.
Peak thunderstorm wind gust measured by the Upper (North) Entrance Portage Canal buoy (45023).
Peak thunderstorm wind gust measured by the Upper (North) Entrance Portage Canal buoy (45023).
Peak thunderstorm wind gust measured at the Passage Island Light C-MAN station just northeast of Isle Royale.
Peak thunderstorm wind gust measured at the Passage Island Light C-MAN station just northeast of Isle Royale.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Lake Superior in 2023Every state in 2023This day in weather history
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1131735, 1131736, 1131737, 1131738, 1131739, 1131740, 1131741, 1131742.