Daytime heating allowed the atmosphere to destabilize by the afternoon hours ahead of a northward moving warm front. Isolated thunderstorms developed during peak heating.
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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 GRB wrote it up.
Daytime heating allowed the atmosphere to destabilize by the afternoon hours ahead of a northward moving warm front. Isolated thunderstorms developed during peak heating.
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 Green Bay, WI wrote its last area forecast discussion before the first event at May 29, 2:45 PM CST, 1 hour 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREEN BAY WI 345 PM CDT TUE MAY 29 2007 .SHORT TERM...TONIGHT AND WEDNESDAY. SHOWERS AND THUNDERSTORMS ARE THE MAIN CONCERNS THROUGH WEDNESDAY. MORNING SOUNDINGS FROM AROUND THE AREA INDICATED CONVECTIVE TEMPERATURES MAINLY AROUND 80 DEGREES. SHOWERS DEVELOPED BY MIDDAY AS IT WARMED TO NEAR CONVECTIVE TEMPERATURES. MESOANALYSIS FROM EARLY THIS AFTERNOON HAD SFC TO 3 KM LAPSE RATES IN THE 7.5 TO 8.5 C/KM RANGE AWAY FROM THE LAKESHORE COUNTIES. THE WESTERN PART OF THE FORECAST AREA HAD SBCAPES AROUND 1200 J/KG...MUCAPES IN THE 1200-1600 J/KG RANGE ALONG WITH <25 J/KG OF CIN. 700-500 MB LAPSE RATES WERE MAINLY 5.5 TO 6 C/KM. WOULD EXPECT MUCH OF THE CONVECTION TO DIMINISH OR END AROUND SUNSET SINCE SHORT WAVE ENERGY AHEAD OF THE CLOSED MID LEVEL CIRCULATION OVER THE PLAINS WAS MAINLY WEST OF THE FORECAST AREA. THUS...HAVE KEPT A CHANCE IN THE NORTHWEST WHERE INSTABILITY WAS GREATER AND SOME SHORT WAVE ENERGY MAY KEEP CONVECTION GOING DURING THE NIGHT. AS THE SYSTEM MOVES CLOSER ON WEDNESDAY...HAVE SPREAD POPS ACROSS THE ENTIRE AREA BY AFTERNOON. .LONG TERM...WEDNESDAY NIGHT THRU NEXT MONDAY. MODELS FORECAST UPPER LOW TO MOVE VERY SLOWLY EAST OVER THE NEXT SEVERAL DAYS. THE COMBINATION OF DIFFLUENT UPPER FLOW...LOW LEVEL MOISTURE AND AFTERNOON HEATING SHOULD COMBINE FOR SCATTERED THUNDERSTORMS EACH DAY...ESPECIALLY IN THE AFTERNOON AND EVENING. SUNDAY AND SUNDAY NIGHT LOOK MOST LIKELY TO BE DRY WITH WEAK SURFACE HIGH AND NORTHWEST UPPER FLOW. .AVIATION...SCATTERED THUNDERSTORMS WILL DIMINISH THIS EVENING WITH LOSS OF SURFACE HEATING. OTHERWISE EXPECT VFR CIGS AND VSBYS WITH MAYBE A FEW HOURS OF 5SM HZ FOR A FEW HOURS WEDNESDAY MORNING AFTER SUNRISE. && .GRB WATCHES/WARNINGS/ADVISORIES... NONE. && RDM WEATHER.GOV/GREENBAY
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREEN BAY WI 545 AM CDT TUE MAY 29 2007 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-301100- VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-SOUTHERN MARINETTE- LINCOLN-LANGLADE-MENOMINEE-NORTHERN OCONTO-SOUTHERN OCONTO-DOOR- MARATHON-SHAWANO-WOOD-PORTAGE-WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA- WINNEBAGO-CALUMET-MANITOWOC- 545 AM CDT TUE MAY 29 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST WISCONSIN. .DAY ONE...TODAY AND TONIGHT AN ISOLATED THUNDERSTORM IS POSSIBLE DURING THE AFTERNOON AND EVENING HOURS. SEVERE THUNDERSTORMS ARE NOT EXPECTED. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THUNDERSTORMS ARE POSSIBLE EACH DAY FROM WEDNESDAY THROUGH SATURDAY. IF ENOUGH DAYTIME HEATING CAN OCCUR ON WEDNESDAY...ISOLATED SEVERE THUNDERSTORMS WITH DAMAGING WINDS AND LARGE HAIL MAY DEVELOP. WHILE ADDITIONAL THUNDERSTORMS ARE ANTICIPATED THURSDAY THROUGH SATURDAY... THEY ARE EXPECTED TO REMAIN BELOW SEVERE LIMITS. THERE IS ANOTHER CHANCE OF THUNDERSTORMS ASSOCIATED WITH A COLD FRONT ON MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TO BE NEEDED TODAY OR TONIGHT. LMZ521-522-541>543-564-301100- THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-THE ADJOINING WISCONSIN WATERS OF LAKE MICHIGAN OUT TO MID-LAKE- 545 AM CDT TUE MAY 29 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WATERS OF CENTRAL AND SOUTHERN GREEN BAY...AND LAKE MICHIGAN FROM ROCK ISLAND PASSAGE TO SHEBOYGAN. .DAY ONE...TODAY AND TONIGHT AN ISOLATED THUNDERSTORM IS POSSIBLE DURING THE AFTERNOON AND EVENING HOURS. SEVERE THUNDERSTORMS ARE NOT EXPECTED. AS LOW LEVEL MOISTURE INCREASES TODAY AND TONIGHT PATCHY FOG MAY DEVELOP ALONG THE NEARSHORE WATERS. VISIBILITIES MAY DROP BELOW A MILE AT TIMES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THUNDERSTORMS ARE ALSO POSSIBLE WEDNESDAY THROUGH SATURDAY...AND AGAIN ON MONDAY. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED. TDH/KALLAS WEATHER.GOV/GREENBAY
The Marquette radar (KMQT), 107 km away, was scanning. The volume nearest the first event began at 22:16 UTC.
1 thunderstorm wind. Local standard time, as filed.
Several trees were reported down 10 miles southeast of the town of Tipler.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2007Every state in 2007This day in weather historyWarnings in Wisconsin, May 2007
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: 30450.