A brief waterspout was observed about a mile or so off shore, norhteast of the city of Sheboygan harbor. It was associated with thunderstorms that moved west to east across the northern part of the city of Sheboygan and out over Lake Michigan.
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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 MKX wrote it up.
A brief waterspout was observed about a mile or so off shore, norhteast of the city of Sheboygan harbor. It was associated with thunderstorms that moved west to east across the northern part of the city of Sheboygan and out over Lake Michigan.
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 Milwaukee, WI wrote its last area forecast discussion before the first event at Aug 6, 2:36 PM CST, 54 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 336 PM CDT WED AUG 6 2008 .SHORT TERM... TONIGHT- UPPER TROUGH WELL DEFINED IN WATER VAPOR IMAGERY DIVING SOUTHEAST ACROSS WISCONSIN THIS AFTERNOON. PERSISTENT CLUSTER OF STORMS AHEAD OF THE VORTICITY MAXIMUM HAS TRACKED FROM SOUTHERN CANADA OVERNIGHT ACROSS NORTHERN MINNESOTA INTO WESTERN WISCONSIN. WITH DIURNAL HEATING...OTHER THUNDERSTORMS HAVE FORMED BENEATH THE -14C 500 MB TEMPS AS TEMPS REACHED THE LOWER 80S OVER 55-60 TDS. INTERESTING PROBLEM WITH ACTIVITY MOVING INTO SOUTHERN WISCONSIN IS THE PERSISTENT MID/HIGH CLOUDS THAT HAVE HINDERED DIURNAL HEATING SOMEWHAT WITH READINGS A FEW DEGREES BELOW EXPECTED HIGHS. THIS WILL LIMIT THE COVERAGE SOME LATE THIS AFTERNOON AND EARLY EVENING AS ACTIVITY MOVES INTO CWA. EXPECT THESE STORMS TO QUICKLY WEAKEN AFTER 00Z AND PROBABLY BE GONE BY 2 OR 3Z. THUS...ONLY EARLY EVENING SHOWERS IN THE FORECAST...AND THAT MAY BE OVERDONE. THURSDAY- FLOW TURNS MORE NORTHERLY AND REMAINS RATHER COOL AT 500 MB. ALTHOUGH AIRMASS CONTINUES TO DRY THROUGH THE DEEPER COLUMN...WILL STILL BE SOME MEAGER INSTABILITY DURING THE AFTERNOON WITH HEATING. IN ADDITION...CONVERGENCE ALONG THE LAKE BREEZE MAY TRIGGER ISOLATED AFTERNOON CONVECTION. LEFT THIS OUT FOR NOW...BUT NEED TO WATCH FOR THIS. FRIDAY- SURFACE HIGH MOVES ACROSS WITH QUIET WEATHER EXPECTED. SATURDAY- UNCERTAINTY STARTS TO CREEP IN A LITTLE BIT. 00Z RUN OF ECMWF HAD WEAK DISTURBANCE OVER THE FOUR CORNERS TURNING EAST ACROSS IOWA DURING THE WEEKEND. 12Z RUN HAS THIS FARTHER SOUTH ACROSS KANSAS AND MISSOURI. HAVE SATURDAY DRY FOR NOW...BUT WILL HAVE TO KEEP THIS ON BACK BURNER. .LONG TERM... SUNDAY THROUGH WEDNESDAY- GFS AND ECMWF DIVERGE ON HOW DEEP UPPER LOW OVER GREAT LAKES DEVELOPS BY MID WEEK. SIGNIFICANT TROUGH MOVES INTO PACIFIC NORTHWEST ON SATURDAY...WHICH IS HANDLED WELL BY BOTH MODELS. HOWEVER...THEY THEN HANDLE THE EVOLUTION BENEATH THE WEAK OMEGA BLACK IN NORTH CENTRAL CANDIDA IN DIFFERENT FASHION. BOTTOM LINE IS THAT NOT MUCH DETAIL ABOUT PRECIPITATION TIMING CAN BE OFFERED AND A SHOTGUN APPROACH OF LOW POPS IS ABOUT THE BEST WE CAN DO. DOES NOT APPEAR TO BE ANY THREAT OF HOT WEATHER OVER THE NEXT WEEK. && .AVIATION...WIDELY SCATTERED SHOWERS AND THUNDERSTORMS SHOULD AFFECT KMSN AND KMKE FROM LATE AFTERNOON THROUGH EARLY EVENING...AS SURFACE COLD FRONT AND SHORTWAVE TROUGH MOVE THROUGH THE AREA. WILL GO WITH VICINITY THUNDER WORDING FOR NOW...GIVEN UNCERTAINTY WITH EXPECTED TIMING AND PLACEMENT. JUST A CB MENTION WITH THE CLOUD GROUP AT KENW. PREVAILING VFR CONDITIONS EXPECTED...THOUGH MVFR VISIBILITIES AND CEILINGS IN STORM DOWNDRAFTS POSSIBLE. ACTIVITY SHOULD END BY MID EVENING...WITH LOSS OF DAYTIME HEATING. HIGH PRESSURE TO MAINTAIN VFR CONDITIONS FOR THE REST OF THE PERIOD. & .MKX WATCHES/WARNINGS/ADVISORIES... WI...NONE. LM...NONE. && SHORT/LONG TERM...CRAVEN/02 AVIATION/MARINE...WOOD/08
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 427 PM CDT WED AUG 6 2008 WIZ046-047-051-052-056>060-062>072-070900- MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-DODGE- WASHINGTON-OZAUKEE-IOWA-DANE-JEFFERSON-WAUKESHA-MILWAUKEE- LAFAYETTE-GREEN-ROCK-WALWORTH-RACINE-KENOSHA- 427 PM CDT WED AUG 6 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WISCONSIN...SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN. .DAY ONE...TONIGHT ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED UNTIL SUNSET ACROSS SOUTHERN WISCONSIN. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS...MAINLY NORTH OF A WISCONSIN DELLS...TO COLUMBUS...TO MEQUON LINE. LARGE HAIL UP TO ONE INCH IN DIAMETER WOULD BE THE MAIN HAZARD. ANY SEVERE STORMS WOULD BE ISOLATED AT BEST. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS A CHANCE OF THUNDERSTORMS SUNDAY THROUGH TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION SHOULD NOT BE NEEDED. LMZ643>646-070900- SHEBOYGAN TO PORT WASHINGTON WI- PORT WASHINGTON TO NORTH POINT LIGHT WI- NORTH POINT LIGHT TO WIND POINT WI- WIND POINT WI TO WINTHROP HARBOR IL- 427 PM CDT WED AUG 6 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN. .DAY ONE...TONIGHT ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED UNTIL SUNSET ACROSS THE NEARSHORE WATERS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS MAINLY NORTH OF NORTHPOINT LIGHTHOUSE. LARGE HAIL UP TO ONE INCH IN DIAMETER WOULD BE THE MAIN HAZARD. ANY SEVERE STORMS WOULD BE ISOLATED AT BEST. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS A SLIGHT CHANCE OF THUNDERSTORMS SUNDAY NIGHT AND MONDAY NIGHT. WOOD WWW.WEATHER.GOV/MKX
The Green Bay radar (KGRB), 88 km away, was scanning. The volume nearest the first event began at 21:29 UTC.
1 waterspout. Local standard time, as filed.
The times and location are estimates based on information from a couple local fishermen who were positioned south of the storms.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Lake Michigan in 2008Every state in 2008This day in weather history
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: 205701.