A few thunderstorms produced lightning damage and large hail over south central Upper Michigan on the 14th.
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.
A few thunderstorms produced lightning damage and large hail over south central Upper Michigan on the 14th.
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 Aug 14, 5:23 AM CST, 1 hour 52 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE MARQUETTE MI 723 AM EDT FRI AUG 14 2009 .DISCUSSION /ISSUED AT 512 AM EDT/... CONTINUE TO MONITOR FEATURE SPINNING OVER CENTRAL WISCONSIN...AS IT HAS A HIGH POTENTIAL TO BUST THE FORECAST FOR THE NEXT 12 TO 16 HOURS. MODELS SEEM TO HAVE A FAIRLY GOOD HANDLE ON THE FEATURE IN THE NEAR TERM...WITH THE 500MB TROUGH POISED TO MOVE TO NORTHEASTERN WISCONSIN AND FAR SOUTHWESTERN UPPER MICHIGAN BY 12Z THIS MORNING...BEFORE SHIFTING TO THE FAR EASTERN UPPER PENINSULA BY SUNSET. STILL...THE 00Z NAM IS SLIGHTLY DEEPER AND SLOWER TO SLIDE THIS TROUGH OUT OF THE CWA LATE THIS AFTERNOON/EARLY THIS EVENING. THE 00Z RUN OF THE LOCAL HIRESWRF BACKS A WEAKER...MORE WASHED OUT SOLUTION...WHILE THE NAM IN ON THE OTHER SIDE OF THE FENCE...PAINTING OUT OVER A QUARTER OF AN INCH OF LIQUID WITH THUNDERSTORMS FOR ALL BUT THE FAR WESTERN ZONES. WILL LEAN AGAINST THIS SOLUTION FOR NOW...EVEN THOUGH IT...LIKE THE REGWRF DO LOOK GOOD PRIOR TO 18Z THIS AFTERNOON. NOT A LOT TO KEY OFF OF...OTHER THAN THE 500MB FLOW...AS THE LLJ/300MB JETS ARE NOT EXISTENT...AND SFC FEATURES ARE OF LITTLE USE. STILL...AT 4Z...THIS AREA WAS SURROUNDED BY SFC DEW POINTS IN THE UPPER 60S...STREAMING IN FROM EVEN MORE MOISTER AIR OVER IOWA. FLASH FLOOD WARNINGS HOISTED FOR FAR WEST CENTRAL WISCONSIN LATE THURSDAY EVENING POISED THE QUESTION...WHAT IS OUR FFG. MOST OF OUR AREAS SHOULD BE ABLE TO HOLD 2.8 INCHES FAR SOUTH TO NEARLY 3.5 INCHES OTHERWISE. FOR COMPARISON...THE 6HR FFG WAS NEARLY 4.5 INCHES. SEE THE POTENTIAL FOR FOG TO DEVELOP OVERNIGHT TONIGHT...AS DEW POINTS RISE INTO THE MID 60S...AND HAVE ADDED PATCHY FOG TO LAKE SUPERIOR ONLY TONIGHT INTO SATURDAY. OTHERWISE ON THE MORNING WEATHER MAP...THE NEXT SIGNIFICANT FEATURE HAS JUST MOVED INTO NORTHERN AND CENTRAL WASHINGTON STATE. STRONG SOUTHWESTERLY FLOW AHEAD OF THIS FEATURE WAS ASSISTING IN THE PRODUCTION OF SHOWERS AND THUNDERSTORMS ALONG ROCKIES. ASSOCIATED WITH THIS FEATURE...LOW PRESSURE AT THE SURFACE STRETCHES FROM NORTHERN UTAH TO WESTERN SOUTH DAKOTA...WITH WEATHER LOW PRESSURE/FRONTAL BOUNDARY SET UP FROM THE LOW IN SOUTH DAKOTA THROUGH FAR NORTHWESTERN MINNESOTA...CENTRAL ONTARIO...AND CENTRAL QUEBEC. STRONG SHOWERS AND THUNDERSTORMS HAVE ALSO BEEN NOTED JUST NORTH OF CYQK AND CYHD EARLY THIS MORNING IN WESTERN QUEBEC...ALONG THIS FRONT. THIS FRONT MAY DIP OVER LAKE SUPERIOR AND FAR NORTHERN UPPER MICHIGAN DURING THE DAY SATURDAY...BEFORE SHIFTING NORTHWARD BY LATE SATURDAY AFTERNOON AS THE LOW MOVES OVER THE PLAINS STATES. EXPECT THE 500MB LOW TO SLIDE TO NORTHERN MONTANA BY 12Z SUNDAY...AND TO WEST CENTRAL ONTARIO BY 00Z TUESDAY. CENTRAL ONTARIO WILL BE THE MAIN FOCUS FOR THE SURFACE LOW AS WELL BY 00Z TUESDAY....BEFORE IT SHIFTS ACROSS ONTARIO AND NORTHERN LAKE SUPERIOR SUNDAY NIGHT INTO EARLY MONDAY. AFTER THE PASSAGE OF THE 500MB TROUGH...ZONAL FLOW SHOULD SET UP ACROSS UPPER MICHIGAN FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY. && .AVIATION /FOR THE 12Z TAF ISSUANCE/... VFR/MVFR CONDITIONS SHOULD PREVAIL AT KCMX/KSAW THROUGH THIS FORECAST PERIOD. AS THE MID LEVEL DISTURBANCE OVER WISCONSIN DRIFTS EASTWARD IT WILL PROUCE SOME CONVECTION WHICH WILL REACH PORTIONS OF CENTRAL UPPER MICHIGAN THIS MORNING WITH MAJORITY OF CONVECTION STAYING TO THE SOUTH. DID CALL FOR A CHANCE OF SHOWERS AT KSAW AS SOME CONVECTION COULD STAY IN AND BE THAT FAR NORTH LATE THIS MORNING INTO THIS AFTERNOON WITH SOME SURFACE HEATING HELPING TO FORM SOME CONVECTION. WITH MOISTURE FROM TODAYS RAINS AND RADIATIONAL COOLING TONIGHT OVER THE AREA...THERE IS A POTENTIAL FOR FOG DEVELOPMENT LATE TONIGHT AT BOTH LOCATIONS...BUT MORE SO FOR KSAW. && .MARINE /FOR THE 4 AM LAKE SUPERIOR FORECAST ISSUANCE/... WINDS ACROSS LAKE SUPERIOR WILL BE UNDER 20 KNOTS THROUGH THIS FORECAST. THE EXCEPTION WILL BE SATURDAY NIGHT/SUNDAY AS SOUTHERLY WINDS OVER EASTERN LAKE SUPERIOR MAY HAVE GUSTS TO 25KT AHEAD OF AN APPROACHING COLD FRONT. THERE MAY BE SOME FOG LATER IN THE WEEKEND AS HIGHER DEW POINTS ADVECT OVER THE COOL WATER AND SOME SHOWERS/THUNDERSTORMS OCCUR. && .MQT WATCHES/WARNINGS/ADVISORIES...NONE. && DISCUSSION...KF AVIATION...07 MARINE...DLG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MARQUETTE MI 343 AM EDT FRI AUG 14 2009 MIZ001-003-151200- KEWEENAW-NORTHERN HOUGHTON- 343 AM EDT FRI AUG 14 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL UPPER MICHIGAN. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS ARE POSSIBLE SUNDAY THROUGH THE DAY MONDAY. THUNDERSTORMS ARE AGAIN POSSIBLE WEDNESDAY AND THURSDAY...MAINLY DURING THE AFTERNOON HOURS. .SPOTTER INFORMATION STATEMENT... THE NEED FOR WEATHER SPOTTER REPORTS IS NOT ANTICIPATED AT THIS TIME. MIZ002-004>007-009>014-084-085-151200- ONTONAGON-BARAGA-MARQUETTE-ALGER-LUCE-GOGEBIC-IRON-DICKINSON- MENOMINEE-DELTA-SOUTHERN SCHOOLCRAFT-SOUTHERN HOUGHTON- NORTHERN SCHOOLCRAFT- 343 AM EDT FRI AUG 14 2009 /243 AM CDT FRI AUG 14 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN UPPER MICHIGAN AND CENTRAL UPPER MICHIGAN. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE POSSIBLE THROUGH THIS EVENING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS ARE POSSIBLE SUNDAY ACROSS WESTERN UPPER MICHIGAN...AND ACROSS THE ENTIRE AREA SUNDAY NIGHT THROUGH MONDAY. THUNDERSTORMS ARE ONCE AGAIN POSSIBLE WEDNESDAY AND THURSDAY...MAINLY DURING THE AFTERNOON HOURS. .SPOTTER INFORMATION STATEMENT... THE NEED FOR WEATHER SPOTTER REPORTS IS NOT ANTICIPATED AT THIS TIME. LSZ162-240>251-263>267-151200- 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- 343 AM EDT FRI AUG 14 2009 /243 AM CDT FRI AUG 14 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN LAKE SUPERIOR...CENTRAL LAKE SUPERIOR AND WESTERN LAKE SUPERIOR. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE POSSIBLE OVER FAR EASTERN LAKE SUPERIOR THIS EVENING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS ARE POSSIBLE OVER WESTERN LAKE SUPERIOR LATE SATURDAY NIGHT THROUGH SUNDAY MORNING...THEN ACROSS THE ENTIRE AREA SUNDAY AFTERNOON THROUGH MONDAY. THUNDERSTORMS ARE ONCE AGAIN POSSIBLE WEDNESDAY AND THURSDAY...MAINLY DURING THE AFTERNOON HOURS. .SPOTTER INFORMATION STATEMENT... THE NEED FOR WEATHER SPOTTER REPORTS IS NOT ANTICIPATED AT THIS TIME. LMZ221-248-250-151200- 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- 343 AM EDT FRI AUG 14 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN LAKE LAKE MICHIGAN. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE POSSIBLE THROUGH THIS EVENING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS ARE POSSIBLE SUNDAY AFTERNOON THROUGH THE DAY MONDAY. THUNDERSTORMS ARE ONCE AGAIN POSSIBLE WEDNESDAY AND THURSDAY...MAINLY DURING THE AFTERNOON HOURS. .SPOTTER INFORMATION STATEMENT... THE NEED FOR WEATHER SPOTTER REPORTS IS NOT ANTICIPATED AT THIS TIME. KF
The Marquette radar (KMQT), 90 km away, was scanning. The volume nearest the first event began at 13:13 UTC.
1 lightning, 1 hail. Local standard time, as filed.
Lightning downed a tree near the intersection of Dickinson Boulevard and Wright Street in Kingsford. The street was blocked to traffic as crews cleaned up the debris.
Most hailstones were one-half inch in diameter with a few three-quarter inch diameter hailstones.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2009Every state in 2009This day in weather historyWarnings in Michigan, August 2009
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: 191723, 191724.