Thunderstorms developed in an unstable airmass as a cold front pushed through northeast Wisconsin. A few of the storms produced damaging winds.
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 GRB wrote it up.
Thunderstorms developed in an unstable airmass as a cold front pushed through northeast Wisconsin. A few of the storms produced damaging winds.
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 Jul 10, 3:39 AM CST, 9 hours 31 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREEN BAY WI 439 AM CDT TUE JUL 10 2007 .SHORT TERM...TODAY THROUGH WEDNESDAY... NORTHWEST FLOW TO BE RE-ESTABLISHED OVER THE AREA THIS PERIOD AS TROF DEEPENS OVER THE EASTERN THIRD OF THE COUNTRY. POTENT SHORT WAVE OVER EASTERN NORTH DAKOTA MOVING RAPIDLY EAST OVERNIGHT. SYSTEM TO CONTINUE TO DEEPEN AS PULLS NORTHEAST INTO WESTERN ONTARIO THIS AFTERNOON. MAIN DYNAMICS WITH SYSTEM...100 KT JET...WILL REMAIN NORTH OF STATE...THOUGH MODELS SHOW SOME SIG LIFT WITH FRONT THAT IS PROGGED TO BE INTO AREA BY 18Z. DID NOT MAKE MAJOR CHANGES TO PREVIOUS GRIDS...JUST PULLING BACK ON POPS IN THE MORNING EAST. AT PRESENT TIME...PCPN CONFINED TO VCNTY OF SHORT WAVE. EXPECT PCPN TO REDEVELOP ALONG FRONT LATER MORN...AFTERNOON. SBCAPES PROGGED TO BE BETWEEN 1.5K AND 2K THOUGH MID LEVEL INSTABILITY NOT TOO IMPRESSIVE. GIVEN UNIDIRECTIONAL SHEAR IN FORECAST SOUNDINGS AND INCREASING SPEEDS AS JET PUSHES IN THIS AFTERNOON...LOOK FOR DAMAGING WIND POTENTIAL WITH STRONGER STORMS. SYSTEM PULLS OUT QUICKLY BY EVENING. HAVE ADDED CHANCE OF TSTMS ON WED GIVEN CYCLONIC FLOW AND COLD TEMPERATURES ALOFT. -20 AT 5H OVER THE NORTH. LOW LEVEL AND MID LEVEL LAPSE RATES QUITE STEEP. WITH EXPECTED LOW FREEZING LEVELS...HAIL IS A DEFINITE POSSIBILITY. .LONG TERM...WED NIGHT THROUGH MONDAY... NW UPPER FLOW CONTINUES THRU MUCH OF PD AS SERIES OF SHRTWV TROFS CARVE OUT LNGWV OVR ERN NOAM AND WRN RDG HOLDS. SOME BACKING OF FLOW PSBL ERLY NXT WK AS ERN VORTEX RETROGRADES A BIT AND FLATTENS FLOW OVR CANADA. SERIES OF FAST MOVG SHRTWV TROFS WL FOLLOW IN THE STEPS OF TUESDAYS SYSTEM. NEXT SYS WL BE LATER WED/THU. PRECISE TIMING OF PRECIP ONSET BETWEEN MODELS (AND MODEL RUNS) IS STILL OF CONCERN...BUT GENERAL IDEA IS TO BRING CLDS AND CHC SHOWERS WED EVENING ACRS N AND CNTRL...AND FAR E BY THU AM. ANOTHER SYS IS DEPICTED BY GFS/UKMET/ECMWF TO AFFECT AREA LATE FRI INTO SAT. CONFIDENCE IS NOT HIGH ON TIMING AS MODELS ARE HAVING TROUBLE WITH SPEED OF SYSTEMS IN THIS NW FLOW. TEMPS WL BE BLO NORM FOR MUCH OF PD WITH UPPER TROF ANCHORED OVER JAMES BAY...SLOWLY MODERATING EARLY NXT WK AS UPPER LOW BACKS A BIT AS FLOW FLATTENS. && .AVIATION...PATCHY FOG AND LOW CLOUDS DEVELOPED AND WILL LINGER INTO MORNING HOURS. COLD FRONT TO PASS THROUGH REGION DURING THE AFTERNOON WITH LINE OF TSTMS EXPECTED OUT AHEAD OF THE FRONT. STORMS POSSIBLY STRONG WITH DAMAGING WINDS EXPECTED THIS AFTERNOON. && .GRB WATCHES/WARNINGS/ADVISORIES... NONE. && TE/JKL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREEN BAY WI 1102 AM CDT TUE JUL 10 2007 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-111100- VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE- MENOMINEE-NORTHERN OCONTO-DOOR-MARATHON-SHAWANO-WOOD-PORTAGE- WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-WINNEBAGO-CALUMET- MANITOWOC-SOUTHERN MARINETTE-SOUTHERN OCONTO- 1102 AM CDT TUE JUL 10 2007 ...SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS POSSIBLE THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH-CENTRAL AND NORTHEAST WISCONSIN. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS ARE EXPECTED THIS AFTERNOON. SOME OF THE STORMS ARE LIKELY TO BE SEVERE AND PRODUCE LARGE HAIL AND DAMAGING WINDS. THE GREATEST RISK OF SEVERE WEATHER WILL BE BETWEEN 100 PM AND 600 PM. A FEW OF THE STORMS COULD ALSO PRODUCE TORNADOES. THE GREATEST RISK OF TORNADOES IS ACROSS THE NORTHEAST CORNER OF THE STATE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY AFTERNOON...WITH THE STRONGER STORMS CAPABLE OF PRODUCING SMALL HAIL. THERE IS ALSO A CHANCE OF THUNDERSTORMS FROM TIME TO TIME THROUGH THE REMAINDER OF THE PERIOD...THOUGH WIDESPREAD SEVERE WEATHER IS NOT EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON AND POSSIBLY INTO THE EARLY EVENING. LMZ521-522-541>543-564-111100- 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- 1102 AM CDT TUE JUL 10 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...THIS AFTERNOON AND TONIGHT ISOLATED THUNDERSTORMS ARE POSSIBLE EARLY THIS AFTERNOON...WITH MORE WIDESPREAD THUNDERSTORMS EXPECTED DURING THE MIDDLE TO LATE AFTERNOON...AND POSSIBLY INTO THE EARLY EVENING. SOME OF THE STORMS COULD BE SEVERE AND PRODUCE STRONG WINDS AND ROUGH SEAS. LARGE HAIL IS ALSO POSSIBLE. INCREASING WESTERLY FLOW ASSOCIATED WITH THE PASSAGE OF A COLD FRONT WILL CREATE HAZARDOUS CONDITIONS FOR SMALL CRAFT TONIGHT INTO WEDNESDAY. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF THUNDERSTORMS FROM TIME TO TIME THROUGH THE PERIOD...THOUGH WIDESPREAD SEVERE WEATHER IS NOT EXPECTED DURING THESE PERIODS. SKOWRONSKI
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 1245 PM CDT TUE JUL 10 2007 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-101830- 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- INCLUDING EAGLE RIVER...RHINELANDER...CRANDON...CRIVITZ...TOMAHAWK... ANTIGO...STURGEON BAY...WAUSAU...WISCONSIN RAPIDS...STEVENS POINT... APPLETON...GREEN BAY...ALGOMA...WAUTOMA...OSHKOSH...CHILTON AND TWO RIVERS 1245 PM CDT TUE JUL 10 2007 ...TORNADO WATCH UNTIL 800 PM... AT 1240 PM...WEATHER RADAR INDICATED A LINE OF SHOWERS AND ISOLATED THUNDERSTORMS FROM NEAR EAGLE RIVER...SOUTHWEST...TO WAUSAU...TO MARSHFIELD. THE LINE WAS MOVING EAST AT ABOUT 25 MPH. THE STORMS WERE RATHER WEAK AS OF 1240 PM...BUT ARE EXPECTED TO STRENGTHEN AS THEY SPREAD EAST DURING THE AFTERNOON. THE GREATEST RISK OF TORNADOES WILL BE AS THE LINE PUSHES THROUGH THE NORTHEAST CORNER OF THE STATE DURING THE AFTERNOON. THE PRIMARY RISK WITH THE SOUTHERN PORTIONS OF THE LINE...AND ANY STORMS THAT DEVELOP LATER THIS AFTERNOON WEST OF THE LINE...WILL BE OF DAMAGING WIND GUSTS. BE SURE TO CONTINUE TO MONITOR THE LATEST STATEMENTS ON THIS DEVELOPING WEATHER SITUATION. SKOWRONSKI/KIECKBUSCH WEATHER.GOV/GREENBAY
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 145 PM CDT TUE JUL 10 2007 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-101930- 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- INCLUDING EAGLE RIVER...RHINELANDER...CRANDON...CRIVITZ...TOMAHAWK... ANTIGO...STURGEON BAY...WAUSAU...WISCONSIN RAPIDS...STEVENS POINT... APPLETON...GREEN BAY...ALGOMA...WAUTOMA...OSHKOSH...CHILTON AND TWO RIVERS 145 PM CDT TUE JUL 10 2007 ...TORNADO WATCH UNTIL 800 PM... AT 130 PM...WEATHER RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS FROM WEST OF IRON MOUNTAIN MICHIGAN...TO CRANDON...TO STEVENS POINT... TO WEST OF WAUTOMA. THE LINE WAS MOVING EAST AT 25 MPH. THE STORMS HAD SLOWLY STRENGTHENED DURING THE PAST HOUR...BUT WERE STILL NOT SEVERE. THEY ARE EXPECTED TO CONTINUE TO SLOWLY STRENGTHEN AS THEY PUSH EAST. THE GREATEST RISK OF TORNADOES WILL BE AS THE LINE PUSHES THROUGH THE NORTHEAST CORNER OF THE STATE DURING THE AFTERNOON. THE PRIMARY RISK WITH THE SOUTHERN PORTIONS OF THE LINE...AND ANY STORMS THAT DEVELOP LATER THIS AFTERNOON WEST OF THE MAIN LINE...WILL BE OF DAMAGING WIND GUSTS. WIND GUSTS TO 40 MPH ARE POSSIBLE OVER NORTH-CENTRAL WISCONSIN EVEN WELL AWAY FROM THUNDERSTORMS. A TORNADO WATCH IS IN EFFECT FOR THE ENTIRE AREA UNTIL 800 PM THIS EVENING. BE SURE TO CONTINUE TO MONITOR THE LATEST STATEMENTS ON THIS DEVELOPING WEATHER SITUATION. SKOWRONSKI/KIECKBUSCH WEATHER.GOV/GREENBAY
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
207 PM CDT TUE JUL 10 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0205 PM TSTM WND GST SHAWANO 44.78N 88.59W
07/10/2007 M42 MPH SHAWANO WI AMATEUR RADIO
&&SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 210 PM CDT TUE JUL 10 2007 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-102000- 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- INCLUDING EAGLE RIVER...RHINELANDER...CRANDON...CRIVITZ...TOMAHAWK... ANTIGO...STURGEON BAY...WAUSAU...WISCONSIN RAPIDS...STEVENS POINT... APPLETON...GREEN BAY...ALGOMA...WAUTOMA...OSHKOSH...CHILTON AND TWO RIVERS 210 PM CDT TUE JUL 10 2007 ...TORNADO WATCH UNTIL 800 PM... AT 200 PM...WEATHER RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS FROM IRON MOUNTAIN MICHIGAN...SOUTHWEST...TO MOUNTAIN...TO WAUTOMA. THE LINE WAS MOVING EAST AT 30 MPH...THOUGH A FEW CELLS IN THE LINE WERE MOVING FASTER. THE STORMS STRENGTHENED FURTHER IN THE PAST HOUR...AND THAT TREND IS EXPECTED TO CONTINUE. THAT WILL LEAD TO AN INCREASED RISK OF DAMAGING WINDS AS THE LINE MOVES THROUGH EASTERN WISCONSIN DURING THE MIDDLE AFTERNOON HOURS. AS OF 200 PM THERE STILL WERE NO THUNDERSTORMS WEST OF THE MAIN LINE... THOUGH IT IS STILL POSSIBLE THAT ADDITIONAL STORMS WILL DEVELOP DURING THE NEXT COUPLE HOURS. THE PRIMARY RISK OF TORNADOES WILL BE AS THE LINE OF STORMS NOW CROSSING THE AREA PUSHES ACROSS THE NORTHEAST CORNER OF THE STATE. THE PRIMARY RISK WITH THE SOUTHERN PORTIONS OF THE LINE...AND WITH ANY STORMS THAT DEVELOP LATER THIS AFTERNOON WEST OF THE MAIN LINE...WILL BE OF DAMAGING WIND GUSTS. WIND GUSTS TO 40 MPH ARE POSSIBLE OVER NORTH-CENTRAL WISCONSIN EVEN WELL AWAY FROM THUNDERSTORMS. A TORNADO WATCH IS IN EFFECT FOR THE ENTIRE AREA UNTIL 800 PM THIS EVENING. BE SURE TO CONTINUE TO MONITOR THE LATEST STATEMENTS ON THIS DEVELOPING WEATHER SITUATION. SKOWRONSKI/KIECKBUSCH WEATHER.GOV/GREENBAY
The Green Bay radar (KGRB), 51 km away, was scanning. The volume nearest the first event began at 19:11 UTC.
2 thunderstorm wind. Local standard time, as filed.
Straight-line winds from thunderstorms downed trees, large tree limbs and power lines in Belle Plaine. The time of the event is approximate.
Straight-line winds from thunderstorms knocked down several trees in central Door County.
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, July 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: 48507, 48508.