A low pressure trough moving through the area dropped moderate snow over portions of western Upper Michigan on the 7th.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
A low pressure trough moving through the area dropped moderate snow over portions of western Upper Michigan on the 7th.
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 Dec 7, 5:37 AM CST, 1 hour 23 minutes earlier.
Area Forecast Discussion National Weather Service Marquette MI 637 AM EST Wed Dec 7 2022 .SHORT TERM...(Early this morning) Issued at 301 AM EST WED DEC 7 2022 As satellite and radar imagery show a cold front approaching the Upper Peninsula early this morning, expect light lake-effect snow showers to continue and pick-up a little bit over the NW. Fgen intensifies over NW near 12z this morning as the front begins traversing through the area. However, the GFS shows fgen at 850mb increasing over the north central too by around 12z; if this GFS solution comes true, snowfall may be start out more intense over the north central this morning than previously expected. That being said, only a few tenths of an inch to around half an inch of snowfall are expected to fall between now and just before dawn this morning. In addition, some light drizzle/freezing drizzle/snow could be seen over the far east early this morning as a sfc low moves from Lake Superior into northern Ontario. However, not much, if any, precip accumulation is expected in the far east. Otherwise, with low level clouds remaining over the area early this morning, expect the low temps to be based on the CAA associated with the cold front moving into the area from the west; while I kept low temps similar to the previous forecast over the western half early this morning (mid teens to around 20), I did bump up lows in the eastern half to the mid to upper 20s as low level clouds should insulate the sfc (obs as of this writing also support this line of thinking as the east is currently struggling to get below 30). .LONG TERM...(Today through Tuesday) Issued at 445 AM EST WED DEC 7 2022 Well-advertised synoptically-driven SN appears on course for coming to fruition as forecast, with widespread 1+ inch amounts still looking on track to occur across the Nrn portions of the U.P., but some light accums occurring in portions of the S as well. In Gogebic County specifically, frontogenetical forcing coupled with deep layer moisture as PV anomaly rotates through looks to ensure that at least the Wrn half sees moderate SN developing later this morning. Enhancement courtesy of the Great Lake of Superior under Nrly flow aligning with the aforementioned pieces is anticipated to drive up accums quickly, particularly through around 18z or so. Although Gogebic County has been highlighted here specifically, these parameters don't stop at county borders, of course, with much of the Wrn U.P. experiencing a similar setup today, but reaching advisory criteria appears a bit more challenging elsewhere. As the day progresses, the main axis of precip shifts Erd, leading to the N-C and into the Ern areas becoming the focus for SN accums to occur. Again, lake enhancement will assist in driving accums up in the Nrn belt regions, plus orographic boosting. Once upper trough axis completes its trek across the Upper Great Lakes region today, a brief lingering window for Nrly LES exists into early tonight, but with sfc high advancing in quickly, the LES machine won't be turned on for long. Precip chances become null at this point through Thursday night. Closed low- to mid-level low with its parent upper trough presenting itself as a weak open wave grazes past the forecast area to round out this week. Although some lower-end PoPs are in place across the Srn portions of the U.P. for Friday, the bulk of precip associated with this passing disturbance has been consistently indicating it'll stay to the S. Interestingly, a near copy-and-paste scenario pops up on deterministic models about 36 hours later, with the 00z GFS run showing a slightly more Nrly track comparatively, leading to more widespread chances late Saturday. This is the about the point in time where the longer- range models become increasingly divergent in solutions from one another, but what they do have general agreement on heading into early next week is that the forecast is mostly precip-free late in the weekend into early next week, with widespread PoPs re-emerging as next week progresses. With CAA today, expect chilly temps, topping out in the teens and 20s in the W half, to low 30s S-C and E. Near normal temps for this time of year return tomorrow and into the weekend, with a general warming trend to above normal by early next week. Accordingly, lowest lows of this forecast period will be tonight, with single digits and teens occurring. && .AVIATION...(For the 12Z TAFS through 12Z Thursday morning) Issued at 636 AM EST WED DEC 7 2022 MVFR to IFR conditions at each of the TAF sites early this morning deteriorate further to LIFR later this morning and early this afternoon due to a cold front bringing a band of moderate lake- enhanced snow across the area. Once this band passes through, expect snow to become pure lake-effect late this afternoon before dying away tonight. Expect conditions to improve to MVFR once we move into the pure lake-effect snow showers this afternoon, with VFR conditions returning tonight once the snowfall stops. && .MARINE...(For the 4 AM Lake Superior forecast issuance) Issued at 512 AM EST WED DEC 7 2022 Expect gusty Nrly winds today into early tonight, generally topping out at around 30 knots or so. But, a few gusts could approach gale-force of up to 35 knots. A brief reprieve in gusty winds occurs tonight as the winds shift around to become SWrly by tomorrow, with gusts up to 30 knots possible. From late tomorrow into early next week, winds look to remain below 30 knots. Light to moderate freezing spray is expected today into this evening. A brief period of light to moderate freezing spray could occur again midday tomorrow, mainly in the north-central portions of the lake near and along the Canadian border. && .MQT WATCHES/WARNINGS/ADVISORIES... Upper Michigan... Winter Weather Advisory until 4 PM EST this afternoon for MIZ009. Lake Superior... None. Lake Michigan... None. && SHORT TERM...TAP LONG TERM...lg AVIATION...TAP MARINE...lg
Hazardous Weather Outlook National Weather Service Marquette MI 522 AM EST Wed Dec 7 2022 MIZ009-081030- Gogebic- 422 AM CST Wed Dec 7 2022 This Hazardous Weather Outlook is for portions of western Upper Michigan. .DAY ONE...Today and Tonight Light to moderate snowfall is expected to develop this morning, possibly creating some slick road conditions. See the latest Winter Weather Advisory for additional details. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. MIZ001>007-010>014-084-085-081030- Keweenaw-Ontonagon-Northern Houghton-Baraga-Marquette-Alger-Luce- Iron-Dickinson-Menominee-Delta-Southern Schoolcraft- Southern Houghton-Northern Schoolcraft- 522 AM EST Wed Dec 7 2022 /422 AM CST Wed Dec 7 2022/ This Hazardous Weather Outlook is for portions of central Upper Michigan and western Upper Michigan. .DAY ONE...Today and Tonight Light to locally moderate snowfall conditions could be seen near Lake Superior today, especially in western portions of Ontonagon County and the higher terrain of Baraga and Marquette counties into Alger County. Road conditions could become slick, especially in the aforementioned areas. See the latest Special Weather Statements for additional details. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. LSZ162-240>251-263>267-081030- 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- 522 AM EST Wed Dec 7 2022 /422 AM CST Wed Dec 7 2022/ This Hazardous Weather Outlook is for portions of Central Lake Superior...Eastern Lake Superior and Western Lake Superior. .DAY ONE...Today and Tonight A few northerly gale-force gusts up to 35 knots are possible this afternoon over the eastern lake. See the latest Open Lake Forecast for additional details. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. LMZ221-248-250-081030- 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- 522 AM EST Wed Dec 7 2022 This Hazardous Weather Outlook is for portions of Northern Lake Michigan. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... The need for weather spotter reports is not anticipated at this time. TAP
Special Weather Statement National Weather Service Marquette MI 508 AM EST Wed Dec 7 2022 MIZ002-072100- Ontonagon- Including the city of Ontonagon 508 AM EST Wed Dec 7 2022 ...Locally moderate snow through midday... Locally moderate snowfall amounts are anticipated to occur primarily this morning through midday mainly across the western portions of Ontonagon County. Quick accumulations may cause slick roads and a brief reduction in visibilities. Motorists traveling today, especially in higher terrain areas, are encouraged to use low-beam headlights regardless of the sun's status, allow for extra distances between vehicles, and travel cautiously to reach destinations safely. lg
Special Weather Statement National Weather Service Marquette MI 512 AM EST Wed Dec 7 2022 MIZ004>006-072100- Baraga-Marquette-Alger- Including the cities of L'Anse, Gwinn, Marquette, Grand Marais, and Munising 512 AM EST Wed Dec 7 2022 ...Locally moderate snow today... Locally moderate snowfall amounts are anticipated to occur today, particularly in higher terrain areas and into Alger County. Quick accumulations may cause slick roads and a brief reduction in visibilities. Motorists traveling today, especially in the aforementioned areas, are encouraged to use low-beam headlights regardless of the sun's status, allow for extra distances between vehicles, and travel cautiously to reach destinations safely. lg
The national radar mosaic for the moment the first event began.
4 winter weather. Local standard time, as filed.
There was a social media report of 4.2 inches of light, fluffy snow in Ironwood Township in less than eight hours.
There was a Facebook report of 5.5 inches of snow in approximately nine hours at Calumet.
The observer eight miles north of Mass City measured 5.5 inches of snow in approximately nine hours.
The observer at Herman measured four inches of snow in approximately 12 hours.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2022Every state in 2022This day in weather historyWarnings in Michigan, December 2022
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 2026-09-24. Each event’s entry at NCEI: 1069094, 1069095, 1069096, 1069097.