4 thunderstorm wind, as filed by the National Weather Service.
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 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 Jul 17, 3:10 AM EST, 8 hours 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MARQUETTE MI 410 AM EDT MON JUL 17 2006 .DISCUSSION... THE MAIN CONCERN WITH THIS FORECAST PACKAGE IS THE POTENTIAL FOR THUNDERSTORMS TODAY. WATER VAPOR IMAGERY AND RUC DEPICTS A NEAR ZONAL FLOW ALONG THE INTERNATIONAL BORDER OF CANADA AND CONUS. A NUMBER OF SHORTWAVES CONTINUE TO RACE EAST IN THIS FLOW. THE MOST SIGNIFICANT ONES AFFECTING THIS AREA ARE OVER EASTERN U.P. AND OVER SOUTHERN MANITOBA AND WESTERN ONTARIO. SURFACE ANALYSIS SHOWING A LOW OVER NORTH CENTRAL LAKE SUPERIOR WITH A COLD FRONT DRAPED SOUTHWEST INTO NORTHEAST NEBRASKA. THE SHORTWAVE OVER SOUTH CENTRAL CANADA WILL SWEEP INTO WESTERN LAKE SUPERIOR THIS MORNING AND ACROSS THE REST OF THE FORECAST AREA THIS AFTERNOON. A 1016 MB SURFACE RIDGE BEHIND THE SHORTWAVE WILL PUSH THE COLD FRONT THROUGH THE FORECAST AREA BY 18Z REACHING NORTHERN LOWER MICHIGAN BY LATE AFTERNOON. AN AREA OF MUCAPE OF 2500-3000J/KG WILL MOVE ACROSS THE AREA AROUND 12Z REACHING NORTHERN LAKE MICHIGAN BY NOON. A 45 KNOT 850MB JET WILL BE MAKING A STRONG CYCLONIC SHIFT ACROSS THE FORECAST AREA AROUND 12Z. THIS SHIFT WILL MOVE INTO NORTHERN LAKE MICHIGAN BY 18Z. AN 80+ KNOTS UPPER LEVEL JET MAX WILL SHIFT FROM CENTRAL ONTARIO INTO NORTHERN LAKE SUPERIOR BY THIS AFTERNOON. THE STRONGEST 850-500MB Q-VECTOR CONVERGENCE WILL BE PASSING OVER THE FORECAST AREA THIS MORNING. DEEP LEVEL BULK SHEAR WILL BE 35 TO 50 KNOTS OVER LAKE SUPERIOR THIS MORNING...THE BULK SHEAR OF 40 TO 50 KNOTS WILL CONTINUE OVER THE ENTIRE AREA THIS AFTERNOON. THUS CONDITIONS LOOK FAVORABLE FOR THUNDERSTORM DEVELOPING INTO SEVERE THIS MORNING. SOUTHWEST FLOW AHEAD OF THE COLD FRONT WILL PRODUCE DEW POINTS INTO THE UPPER 60S AND LOW 70S ACROSS THE FORECAST AREA. THEREFORE...IT LOOKS LIKE THE GREATEST POTENTIAL FOR THUNDERSTORMS WILL BE BETWEEN 10Z AND 16Z TODAY. DRY AIR WILL ADVECT INTO THE AREA BEHIND THE COLD FRONT WHICH SHOULD START TO STABLIZE THE AIR MASS. TRAJECTORY FORECAST PLOTS CONTINUE TO DRAW WARM AIR OUT OF MINNESOTA AND WESTERN ONTARIO TO THE FORECAST AREA. GUIDANCE STILL SUGGEST WARM AIR ADVECTION BEFORE THE FROPA. CLOUD COVER WITH THE APPROACHING SHORTWAVES WILL HELP HOLD THE TEMPERATURES DOWN. THUS EXPECTED TEMPERATURES IN THE 80S TO AROUND 90. THE SHORTWAVE WILL SWEEP INTO LOWER MICHIGAN...WHILE ANOTHER WEAKER SYSTEM WILL SLIDE INTO THE U.P. TONIGHT. THE SURFACE RIDGE WILL SLIDE OVER THE FORECAST AREA. STRONG 850-500MB Q-VECTOR WILL DOMINATE THE AIR MASS. THE COLD FRONT WILL CONTINUE TO TRACK INTO THE OHIO RIVER VALLEY. DRY AIR ADVECTION BEHIND THE COLD FRONT WILL LOWER THE SURFACE DEW POINTS INTO THE LOW 50S. THE UPPER LEVEL JET MAX WILL SLIDE ACROSS THE FORECAST AREA. THIS WILL ADD TO THE INSTABILITY...HOWEVER...THE DRY AIR AND COOLER TEMPERATURES AT THE SURFACE WILL LIMIT PRECIPITATION POTENTIAL. THE STRONG Q-VECTOR DIVERGENCE AND SURFACE RIDGE WILL CONTINUE TO DOMINATE THE AIR MASS OVER THE UPPER GREAT LAKES ON TUESDAY. THUS WILL KEEP MAINLY DRY CONDITIONS. ANOTHER WEAK SHORTWAVE WILL RACE ACROSS THE FORECAST AREA TUESDAY NIGHT. THE SURFACE HIGH WILL RELOCATE OVER THE LOWER GREAT LAKES ALLOWING A LOW DEVELOPING OVER SOUTH CENTRAL CANADA TO SHIFT INTO EAST CENTRAL MANITOBA...WHILE DRAGGING A COLD FRONT INTO NORTHWEST MINNESOTA. THE NAM/GFS/ENSEMBLE SOLUTIONS SUGGEST PUSHING BACK THE START OF THE PRECIPITATION OVER THE FORECAST AREA BY 6 HOURS. DRY AIR WILL REMAIN IN PLACE TIL 12Z WED. THUS PLAN TO PUSH BACK THE ONSET OF SHOWERS AND THUNDERSTORMS. A COUPLE OF WEAK SHORTWAVES WILL TRAVERSE THE FORECAST AREA ON WEDNESDAY. THE SURFACE LOW WILL MOVE TO NORTH CENTRAL ONTARIO... PULLING THE COLD FRONT INTO THE ARROWHEAD OF MINNESOTA. THE FRONT WILL DIRECT GULF MOISTURE INTO THE UPPER GREAT LAKES REGION. 305K ISENTROPIC ANALYSIS SHOWING STRONG ASCENT OVER THE FORECAST AHEAD OF THE FRONT. PLAN TO BUMP UP THE POPS A LITTLE. AS THE SHORTWAVES DEPART THE FORECAST AREA WEDNESDAY NIGHT...A DEEPER SHORTWAVE WILL ENTER INTO THE WESTERN U.P. THE COLD FRONT WILL SWEEP THROUGH THE FORECAST AREA REACHING THE NORTHERN LAKE MICHIGAN SHORE BY 12Z THURSDAY. ISENTROPIC ANALYSIS SHOWING STRONG ASCENT AHEAD OF THE FRONT. DEEP MOISTURE WILL ALSO FEED MORE SHOWERS AND THUNDERSTORMS. THERE MAY BE A SHORT BREAK IN THE SHOWERS AROUND SUNRISE ON THURSDAY BEFORE THE DEEPER SHORTWAVE AND ASSOCIATED MOISTURE FIELD PASS OVER THE AREA GENERATING MORE SHOWERS AND THUNDERSTORMS. THE SHORTWAVE WILL SWEEP RAPIDLY THROUGH THE AREA AND THUS WILL ALLOW DRIER AIR TO ADVECT INTO AREA ON THURSDAY. THUS WILL END THE PRECIPITATION BY 00Z FRIDAY. THE SURFACE RIDGE WILL DOMINATE THE AREA THROUGH FRIDAY NIGHT. ANOTHER SYSTEM WILL ENTER THE REGION ON SUNDAY. && .MQT...WATCHES/WARNINGS/ADVISORIES...NONE. && DLG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MARQUETTE MI 459 AM EDT MON JUL 17 2006 MIZ001>007-009>014-084-085-181100- KEWEENAW-ONTONAGON-NORTHERN HOUGHTON-BARAGA-MARQUETTE-ALGER-LUCE- GOGEBIC-IRON-DICKINSON-MENOMINEE-DELTA-SOUTHERN SCHOOLCRAFT- SOUTHERN HOUGHTON-NORTHERN SCHOOLCRAFT- 359 AM CDT MON JUL 17 2006 /459 AM EDT MON JUL 17 2006/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN UPPER MICHIGAN AND CENTRAL UPPER MICHIGAN. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WILL BE SCATTERED AROUND THE AREA TODAY. THERE IS A SLIGHT CHANCE OF SEVERE WEATHER WITH THE STORMS...WITH DAMAGING WINDS AND LARGE HAIL POSSIBLE. HEAVY RAIN IS ALSO A THREAT. IT WILL BE ANOTHER VERY WARM DAY OVER SOUTH CENTRAL UPPER MICHIGAN AWAY FROM THE BAY OF GREEN BAY WITH TEMPERATURES AROUND 90. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY THROUGH THURSDAY...THEN AGAIN ON SATURDAY THROUGH SUNDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TODAY. LSZ221-241>248-263-264-181100- KEWEENAW BAY AND HURON BAY FROM LOWER ENTRANCE LIGHT TO PORTAGE LAKE TO HURON ISLANDS MI-SAXON HARBOR WI TO ONTONAGON MI- ONTONAGON TO UPPER ENTRANCE OF PORTAGE CANAL MI- UPPER ENTRANCE OF PORTAGE CANAL TO MANITOU ISLAND MI- MANITOU ISLAND TO LOWER ENTRANCE OF PORTAGE CANAL MI- HURON ISLANDS TO MARQUETTE MI-MARQUETTE TO MUNISING MI- MUNISING TO GRAND MARAIS MI-GRAND MARAIS TO WHITEFISH POINT MI- LAKE SUPERIOR, EAST OF A LINE FROM SAXON HARBOR WI TO GRAND PORTAGE, MN, TO A LINE NORTHWARD FROM MANITOU IS. MI, BEYOND 5 NM AND SOUTH OF THE US/CANADIAN BORDER- LAKE SUPERIOR, EAST OF A LINE FROM MANITOU IS. MI NORTHWARD BEYOND 5 NM AND SOUTH OF THE US/CANADIAN BORDER, EXCLUDING WHITEFISH BAY- 359 AM CDT MON JUL 17 2006 /459 AM EDT MON JUL 17 2006/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN LAKE SUPERIOR...CENTRAL LAKE SUPERIOR AND WESTERN LAKE SUPERIOR. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WILL BE SCATTERED OVER LAKE SUPERIOR TODAY. THERE IS A SLIGHT CHANCE OF SEVERE WEATHER WITH THE STORMS...WITH DAMAGING WINDS AND LARGE HAIL POSSIBLE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY THROUGH THURSDAY...THEN AGAIN SATURDAY THROUGH SUNDAY. LMZ221-248-262-181100- BAY OF GREEN BAY NORTH OF LINE FROM CEDAR RIVER MI TO ROCK ISLAND PASSAGE-SEUL CHOIX POINT TO POINT DETOUR MI- LAKE MICHIGAN...FROM SEUL CHOIX POINT TO ROCK ISLAND PASSAGE...SOUTHEASTWARD BEYOND 5 NM OFF SHORE TO THE MID- LINE OF THE LAKE- 459 AM EDT MON JUL 17 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN LAKE MICHIGAN. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS WILL BE SCATTERED AROUND THE AREA TODAY. THERE IS A SLIGHT CHANCE OF SEVERE WEATHER WITH THE STORMS...WITH DAMAGING WINDS AND LARGE HAIL POSSIBLE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY THROUGH THURSDAY...THEN AGAIN SATURDAY THROUGH SUNDAY. DLG
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
1137 AM EDT MON JUL 17 2006
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0601 AM TSTM WND DMG 8 N SENEY 46.47N 85.95W
07/16/2006 SCHOOLCRAFT MI DEPT OF HIGHWAYS
SEVERAL TREES DOWN ALONG M-77 AND ADJOINING SIDE ROADS
&&
JLBThe Marquette radar (KMQT), 120 km away, was scanning. The volume nearest the first event began at 16:20 UTC.
4 thunderstorm wind. Local standard time, as filed.
Numerous trees up to ten inches in diameter uprooted along Old Seney Road 5 to 10 miles south of Grand Marais.
Twelve-inch diameter tree snapped near base along County Road 416.
Leaves and one to two inch-diameter branches down along County Road 407/H37.
A few two-inch trees snapped and one to two inch branches down along County Road 500.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2006Every state in 2006This day in weather historyWarnings in Michigan, July 2006
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: 5519564, 5519565, 5519566, 5519567.