Thunderstorms that formed in unstable air near a surface boundary caused isolated wind damage.
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 that formed in unstable air near a surface boundary caused isolated wind damage.
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 17, 2:19 AM CST, 11 hours 56 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREEN BAY WI 319 AM CDT TUE JUL 17 2007 .SYNOPSIS...LARGE SCALE PATTERN CURRENTLY QUITE AMPLIFIED...WITH STG RIDGE EXTENDING NWD FM UPR LVL ANTICYCLONE CENTERED OVER CO. DEEP UPR TROF WAS OVER ERN CANADA AND THE NERN CONUS. WRN RIDGE WL REMAIN DOMINANT...AND IS EXPECTED TO VERY SLOWLY EDGE/LEAN EWD INTO THE PLAINS. ADDITIONAL ENERGY DIGGING INTO THE ERN TROF WL CAUSE IT TO AMPLIFY FARTHER SWD INTO THE ERN STATES DURING THE REST OF THE WK. THEN DURING THE WEEKEND AND EARLY NEXT WK THE NRN PORTION IS EXPECTED TO SHEAR EWD INTO THE ATLANTIC WHILE WEAKER SRN PORTION LINGERS BACK OVER THE CONUS. TEMPS WL START NR OF A LITTLE BLO NORMAL AS FRONTAL SYSTEM ALONG THE SWRN EDGE OF THE STRONGER WESTERLIES REMAINS S OF THE FCST AREA. READINGS SHOULD GRADUALLY WARM...ESP LATER IN THE FCST PERIOD WHEN UPR RIDGE LEAN CLOSER TO THE AREA. FRONTAL SYSTEM SHOULD PROVIDE THE FOCUS FOR NUMEROUS ROUNDS OF CONVECTION TO FIRE. SOME OF THAT WL LIKELY AFFECT THE SW PART OF THE FCST AREA...BUT THE HEAVIEST PCPN WL STAY SW OF THE AREA. THEN CANADIAN SFC HIGH BUILDING SWD WL BRING SEVERAL DAYS OF DRY WX LATE IN THE WK AND INTO THE UPCOMING WEEKEND. PCPN CHCS LATE IN THE FCST BECOME VERY UNCERTAIN. && .SHORT TERM...TDA/TNGT/WED. PCPN FCST VERY TOUGH TO GET A GRASP ON THIS MORNING. MODELS INDICATED INCRG INSTABILITY AND GENERATED PCPN OVER THE WHOLE AREA AT SOME POINT BTWN NOW AND TOMORROW. THE PROBLEM IS THAT THE FRONTAL SYSTEM IS HUNG UP S OF THE AREA...AND SYNOPTIC PATTERN IS NOT GOING TO GIVE IT ANY BIG PUSH NEWD. IN ADDITION... REPEATED ROUNDS OF CONVECTION FIRING IN THE FRONTAL ZONE AND THEN TRACKING OFF TO THE SE MAY VERY WELL SHOVE THE FRONT EVEN FURTHER S. DECIDED TO MAKE ONLY VERY MODEST CHGS TO PREV FCST THROUGH WED. SHARPENED UP POP GRADIENT ACRS THE AREA TDA...WITH DRY WX ACRS THE NE AND MID-RANGE POPS ACRS THE SW. BASICALLY RAN WITH THE POP/WX GRIDS FM THE PREV FCST FOR TNGT AND WED. WENT WITH A BLEND OF MET/MAV GUID TEMPS AND PREV FCST. ALTHOUGH WINDS WL BE LGT THEY SHOULD BE MAINLY SELY. THE COLDEST SFC WATER TEMPS IN LAKE MICHIGAN WERE NOW JUST OFFSHORE OVER NWRN PARTS OF THE LAKE. LOWERED TEMPS AT THE LAKESHORE...BUT WITH LGT WINDS THE COOLING EFFECT WL BE FOCUSED VERY CLOSE TO THE SHORELINE. .LONG TERM...WEDNESDAY NIGHT THROUGH SATURDAY NIGHT. DURING THIS PART OF THE FORECAST A RIDGE OVER THE ROCKIES WILL SHARPEN AND SHIFT EAST TO THE PLAINS STATES. A SIGNIFICANT 500 MB TROUGH IN WESTERN ONTARIO IS EXPECTED TO MOVE THROUGH THE FORECAST AREA WEDNESDAY NIGHT AND THURSDAY. THE TROUGH ALONG WITH INSTABILITY AND A SURFACE BOUNDARY WILL BRING A CHANCE OF THUNDERSTORMS TO THE ENTIRE AREA WEDNESDAY NIGHT...AND TO ALL BUT THE NORTH DURING THE DAY ON THURSDAY. AFTER THAT HIGH PRESSURE AND DRIER AIR SHOULD KEEP ANY PRECIPITATION AWAY THROUGH THE EARLY PART OF THE WEEKEND. INCREASED LOW TEMPERATURES A LITTLE ON WEDNESDAY NIGHT SINCE THERE SHOULD BE PLENTY OF CLOUDS. WENT WITH WARMER HIGHS IN THE NORTH ON THURSDAY AS THAT AREA WILL GET MORE SUNSHINE. ADJUSTED LOWS ON THURSDAY NIGHT DOWNWARD DUE TO ARRIVAL OF DRIER AIR AND A DECREASE IN CLOUDS. HIGH TEMPERATURES ON FRIDAY LOOKED GOOD SO THEY WERE LEFT ALONE. AFTER THAT...MADE ONLY MINOR ADJUSTMENTS TO TEMPERATURES. && .AVIATION...SOME MVFR CIGS AND VSBYS EXPECTED EARLY TDA. PLAN TO CARRY THUNDER IN ONLY THE AUW/CWA/OSH TAFS AS THESE SITES WL BE CLOSER TO THE FRONTAL ZONE. && .GRB WATCHES/WARNINGS/ADVISORIES... NONE. && SKOWRONSKI/MG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREEN BAY WI 340 AM CDT TUE JUL 17 2007 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-181100- 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- 340 AM CDT TUE JUL 17 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH-CENTRAL AND NORTHEAST WISCONSIN. .DAY ONE...TODAY AND TONIGHT THERE IS A CHANCE OF THUNDERSTORMS TODAY AND TONIGHT...MAINLY SOUTH OF A LINE FROM WAUSAU...TO APPLETON...TO MANITOWOC. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...BUT A FEW OF THE STORMS COULD PRODUCE GUSTY WINDS. HEAVY RAINFALL IS ALSO POSSIBLE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY INTO THURSDAY. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TO BE NECESSARY TODAY OR TONIGHT. SPOTTERS SHOULD FORWARD ANY REPORTS OF RAINFALL OVER 1 INCH TO THE NATIONAL WEATHER SERVICE IN GREEN BAY. LMZ521-522-541>543-564-181100- 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- 340 AM CDT TUE JUL 17 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 THERE IS A CHANCE OF THUNDERSTORMS TODAY AND TONIGHT...MAINLY SOUTH OF MANITOWOC. SEVERE WEATHER IS NOT EXPECTED...BUT A FEW OF THE STORMS COULD PRODUCE GUSTY WINDS AND HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY INTO THURSDAY. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED. SKOWRONSKI
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 303 PM CDT TUE JUL 17 2007 WIZ019-020-031-172030- LANGLADE-MENOMINEE-SHAWANO- 303 PM CDT TUE JUL 17 2007 ...STRONG THUNDERSTORMS MOVING THROUGH LANGLADE...MENOMINEE AND SHAWANO COUNTIES... AT 258 PM...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR ANTIGO...MOVING SOUTHEAST AT 10 MPH. HAIL UP TO ONE HALF INCH IN DIAMETER...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS STORM. THE THUNDERSTORM WILL BE NEAR... ANTIGO AROUND 310 PM... SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. KURIMSKI
The Green Bay radar (KGRB), 110 km away, was scanning. The volume nearest the first event began at 20:15 UTC.
3 thunderstorm wind. Local standard time, as filed.
Straight-line thunderstorm winds knocked down trees and branches and damaged a heavy duty irrigation system north of Antigo. Some business signs were also blown down in Antigo near the intersection of Highway 45 and Highway 64.
Straight-line thunderstorm winds knocked down trees and power lines. One large tree landed across CR-J.
Thunderstorm winds knocked down an old barn on Kreuger Road and also knocked a tree down across CR-G north of Caroline.
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: 48513, 48514, 48515.