A northeast flow of colder air behind a low pressure system moving through Illinois generated moderate lake effect snow showers over Marquette County from the morning of the 9th into the morning of the 10th.
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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 northeast flow of colder air behind a low pressure system moving through Illinois generated moderate lake effect snow showers over Marquette County from the morning of the 9th into the morning of the 10th.
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 Feb 9, 5:08 AM EST, 1 hour 52 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MARQUETTE MI 508 AM EST TUE FEB 9 2010 .DISCUSSION... THE UPPER LOW IS CENTERED OVER IOWA THIS MORNING...AND SHOULD CONTINUE ITS SLOW EAST/SOUTHEASTWARD PROGRESSION OFF THE VIRGINIA SEABOARD WEDNESDAY AFTERNOON. OTHERWISE AT THE SURFACE...THERE WERE 3 MAIN LOW PRESSURE SYSTEMS ORGANIZING TO OUR SOUTH AND EAST. THE CLOSEST LOW WAS OVER EASTERN IOWA AND NORTHERN ILLINOIS. THIS LOW WILL CONTINUE TO MERGE WITH THE DEEPER LOW OVER THE MISSISSIPPI VALLEY REGION THIS MORNING. A THIRD LOW...HUGGING THE GULF COAST AND ATLANTIC COASTLINES THROUGH LATE WEDNESDAY. THE LARGE HIGH DIPPING ACROSS THE AREA FROM CENTRAL CANADA WILL SLOWLY BE LOSING ITS INFLUENCE OVER UPPER MICHIGAN...RESIDING OVER THE PLAINS STATES BY THIS EVENING. EXPECT A SURFACE TROUGH TO SET UP ACROSS THE UPPER GREAT LAKES FROM THIS EVENING THROUGH EARLY THURSDAY. AS THE MAIN LOW PUSHES FARTHER INTO THE MID ATLANTIC...THE PLAINS HIGH WILL BE ABLE TO SHIFT OVER THE MISSISSIPPI RIVER VALLY/UPPER GREAT LAKES. NORTHERLY WINDS OFF LAKE SUPERIOR WILL BE COMMON THROUGH THE END OF THE WORK WEEK...WITH 850MB TEMPERATURES HOVERING NEAR -12C THROUGH THE ENTIRE PERIOD. WINTER WEATHER ADVISORY MAY BE NEEDED 00Z WEDNESDAY THROUGH 00Z THURSDAY...IF WINDS BECOME ONSHORE N/NNE QUICKER...OR ANY OF THE FOLLOWING MENTIONED ITEMS BECOME A BIT MORE FAVORABLE. CURRENTLY EXPECTING SNOW RATIOS TO BE 13 TO 18:1 ACROSS MOST OF THE CWA THROUGH AT LEAST THURSDAY EVENING. MOST OF THE MOISTURE WILL REMAIN AT OR BELOW 900MB. HOWEVER...SOME ADDITIONAL CLOUDS MAY DEVELOP AT OR ABOVE 700MB. THIS WILL LIKELY INCREASE THE POTENTIAL FOR SEEDER FEEDER SNOW SHOWER DEVELOPMENT AND INTENSIFICATION...WITH THE BEST SNOW GROWTH SET UP IN THIS HIGHER LAYER TODAY THROUGH LATE WEDNESDAY MORNING. 850MB TEMPERATURES WILL REMAIN NEAR -10C THROUGH 06Z WEDNESDAY. AT THAT TIME...THEY ARE EXPECTED TO COOL EVER SO SLIGHTLY...TO A MORE RESPECTABLE -13C...AND REMAIN NEAR THAT LEVEL THROUGH 06Z THURSDAY. OVERALL...THE NOW AMOUNT VALUES DO LINE UP PRETTY WELL WITH OUR PREVIOUS FORECAST...WITH FEW SIGNIFICANT CHANGES NEEDED...AS MODELS REMAIN IN PRETTY GOOD AGREEMENT. && .AVIATION /FOR THE 06Z TAFS/ AT KCMX...NERLY FLOW WILL CONTINUE THROUGH THE TAF PERIOD. EXPECT MVFR CIGS THROUGHOUT WITH VIS LOWERING TUE MORNING. CONDITIONS SHOULD STAY MVFR THROUGH THE PERIOD. THE LIFR CIG THAT CAME IN EARLIER THIS EVENING WAS A SURPRISE WITH WINDS GOING EAST. AT KSAW...FLOW CONTINUES FROM THE NE AND WILL BECOME INCREASINGLY BETTER FOR LES ON TUE. BETTER MOISTURE DOESN/T ARRIVE UNTIL LATE TUE MORNING/AFTERNOON...SO ONLY WENT TO LOW MVFR IN THE AFTERNOON AND TO IFR WITH HEAVIER SNOW TUE NIGHT. THE LIFR CIG THAT CAME IN EARLIER THIS EVENING WAS A SURPRISE AND THIS WILL CONTINUE INTO EARLY THIS MORNING UNTIL SLIGHTLY DRIER AIR COMES IN. && .MARINE /FOR THE 4 AM LAKE SUPERIOR ISSUANCE/... AS LOW PRESSURE PASSES TO THE SOUTH OF THE GREAT LAKES...WINDS WILL INCREASE OVER LAKE SUPERIOR. EXPECT NORTHERLY WINDS TO 30 KNOTS TUESDAY AND WEDNESDAY. WINDS WILL SUBSIDE BY THURSDAY AS HIGH PRESSURE BUILDS OVER THE UPPER GREAT LAKES. THROUGH THE REST OF THE FORECAST PERIOD WINDS WILL REMAIN BELOW 20 KNOTS. && .MQT WATCHES/WARNINGS/ADVISORIES... UPPER MICHIGAN... NONE. LAKE SUPERIOR... NONE. LAKE MICHIGAN... NONE. && DISCUSSION...KF AVIATION...07 MARINE...VOSS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MARQUETTE MI 408 AM EST TUE FEB 9 2010 MIZ004-005-101200- BARAGA-MARQUETTE- 408 AM EST TUE FEB 9 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL UPPER MICHIGAN. .DAY ONE...TODAY AND TONIGHT NORTHEASTERLY WINDS WILL BECOME NORTHERLY...AND INCREASE TONIGHT. THIS WILL BRING LIGHT TO MODERATE SNOW TO NORTH CENTRAL UPPER MICHIGAN...WITH 2 TO 4 INCHES OF SNOW TONIGHT...HIGHEST ACROSS THE HIGHER TERRAIN WEST AND NORTH OF MARQUETTE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY LIGHT TO MODERATE SNOW WILL CONTINUE WEDNESDAY...WITH ANOTHER 1 TO 3 INCHES EXPECTED DURING THE DAY. .SPOTTER INFORMATION STATEMENT... THE NEED FOR WEATHER SPOTTER REPORTS IS NOT ANTICIPATED AT THIS TIME. MIZ001>003-006-007-009>014-084-085-101200- KEWEENAW-ONTONAGON-NORTHERN HOUGHTON-ALGER-LUCE-GOGEBIC-IRON- DICKINSON-MENOMINEE-DELTA-SOUTHERN SCHOOLCRAFT-SOUTHERN HOUGHTON- NORTHERN SCHOOLCRAFT- 408 AM EST TUE FEB 9 2010 /308 AM CST TUE FEB 9 2010/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN UPPER MICHIGAN AND CENTRAL UPPER MICHIGAN. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY 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>267-101200- 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- 408 AM EST TUE FEB 9 2010 /308 AM CST TUE FEB 9 2010/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN LAKE SUPERIOR...CENTRAL LAKE SUPERIOR AND WESTERN LAKE SUPERIOR. .DAY ONE...TODAY AND TONIGHT EXPECT HEAVY FREEZING SPRAY THIS MORNING ACROSS FAR WESTERN LAKE SUPERIOR. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... THE NEED FOR WEATHER SPOTTER REPORTS IS NOT ANTICIPATED AT THIS TIME. LMZ221-248-250-101200- 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- 408 AM EST TUE FEB 9 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN LAKE LAKE MICHIGAN. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... THE NEED FOR WEATHER SPOTTER REPORTS IS NOT ANTICIPATED AT THIS TIME. KF
The national radar mosaic for the moment the first event began.
1 winter weather. Local standard time, as filed.
A spotter in Negaunee measured nine inches of lake effect snow in 24 hours.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2010Every state in 2010This day in weather historyWarnings in Michigan, February 2010
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: 215158.