


Hazardous Weather Outlook
Issued by NWS Marquette, MI
Issued by NWS Marquette, MI
921 FLUS43 KMQT 160907 HWOMQT Hazardous Weather Outlook National Weather Service Marquette MI 507 AM EDT Sat Aug 16 2025 MIZ001>007-009>014-084-085-170915- Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce- Gogebic-Iron-Dickinson-Menominee-Delta-Southern Schoolcraft- Southern Houghton-Northern Schoolcraft- 507 AM EDT Sat Aug 16 2025 /407 AM CDT Sat Aug 16 2025/ This Hazardous Weather Outlook is for portions of central Upper Michigan and western Upper Michigan. .DAY ONE...Today and Tonight Showers and storms are possible today and tonight. A few may be strong to severe. In addition, some flooding and ponding of water due to excessive rainfall is possible. See the Forecast Discussion, WPC`s Day 1 Excessive Rainfall Outlook, and SPC`s Day 1 Convective Outlook for additional details. .DAYS TWO THROUGH SEVEN...Sunday through Friday There are chances of thunderstorms Sunday night through Monday night. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. $$ LSZ162-240>251-263>267-170915- Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM-Saxon Harbor WI to Black River MI- Black River to Ontonagon MI- Ontonagon to Upper Entrance of Portage Canal MI- Upper Entrance of Portage Canal to Eagle River MI- Eagle River to Manitou Island MI- Manitou Island to Point Isabelle MI- Point Isabelle to Lower Entrance of Portage Canal MI- Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays-Huron Islands to Marquette MI- Marquette to Munising MI-Munising to Grand Marais MI- Grand Marais to Whitefish Point MI- Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park- Lake Superior from Upper Entrance to Portage Canal to Manitou Island MI 5NM off shore to the US/Canadian Border- Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore- Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore- Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border- 507 AM EDT Sat Aug 16 2025 /407 AM CDT Sat Aug 16 2025/ This Hazardous Weather Outlook is for portions of Central Lake Superior...Eastern Lake Superior and Western Lake Superior. .DAY ONE...Today and Tonight Thunderstorms are possible today and tonight. Storms may be strong over mainly the western lake. See the Marine Discussion and SPC`s Day 1 Convective outlook for additional details. .DAYS TWO THROUGH SEVEN...Sunday through Friday There are chances of thunderstorms Sunday night through Monday night. There is a low chance (30% or less) for gale force winds over western Lake Superior Sunday. See the latest Open Lake Forecast and Marine Discussion for additional details. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. $$ LMZ221-248-250-170915- 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- 507 AM EDT Sat Aug 16 2025 This Hazardous Weather Outlook is for portions of Northern Lake Michigan. .DAY ONE...Today and Tonight Thunderstorms are possible today and tonight, some capable of producing erratic winds and frequent lightning. See the latest Day 1 Convective Outlook from SPC for additional details.. .DAYS TWO THROUGH SEVEN...Sunday through Friday There are chances of thunderstorms Sunday night through Monday night. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. $$ GS