A cold front interacted with moisture from the Gulf of Mexico to produce strong to severe thunderstorms across northern Wisconsin during the afternoon of the 5th.
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.
A cold front interacted with moisture from the Gulf of Mexico to produce strong to severe thunderstorms across northern Wisconsin during the afternoon of the 5th.
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 5, 1:33 PM CST, 2 hours 51 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREEN BAY WI 233 PM CDT TUE JUL 5 2011 .SYNOPSIS...TYPICAL SUMMER WX EXPECTED FOR THE NEXT WEEK...WITH TEMPS AOA NORMAL AND A FEW ROUNDS OF THUNDERSTORMS. SEASONABLY STG BAND OF WESTERLIES WL PERSIST ACRS THE NRN TIER OF STATES AND SRN CANADA...N OF SUBTROPICAL RIDGE STRETCHED OUT ACRS THE SRN CONUS. MEAN TROF POSNS WL BE NR THE WEST COAST AND OVER THE NERN CONUS. THE ERN TROF SHOULD AMPLIFY A BIT THE NEXT COUPLE DAYS AS SHRTWV NOW CROSSING THE RGN REACHES THE ERN CONUS...THEN WEAKEN THIS WEEKEND. THERE WL BE A FEW CHCS OF RAIN AS WX SYSTEMS PROGRESS THROUGH THE WESTERLIES. MAX TEMPS SHOULD REMAIN AOA NORMAL. && .SHORT TERM...TNGT AND WED. MAIN FCST CONCERNS CONT TO BE EXTENT OF TSTMS AND SVR POTENTIAL INTO THE EVENING HOURS. THE 19Z MSAS SFC ANALYSIS SHOWED A TROF OF LOW PRESSURE OVER ERN WI...THE PRIMARY CDFNT OVER NW WI AND HI PRES BUILDING INTO THE NRN PLAINS. LATEST RADAR MOSAIC INDICATED A CLUSTER OF TSTMS OVER E-CNTRL WI ASSOCIATED WITH THE SFC TROF (AND A SHRTWV TROF ALOFT) INTERACTING WITH MODERATE INSTABILITY. SO FAR THESE STORMS HAVE BEHAVED THEMSELVES...BUT POTENTIAL OF ISOLATED SVR IS STILL THERE. OTHER TSTMS HAVE DEVELOPED OVER NW WI AHD OF THE CDFNT SO THESE WL NEED TO BE DEALT WITH THIS EVENING. THE INITIAL SHWRS/TSTMS ACROSS E-CNTRL WI LATE THIS AFTERNOON/EARLY EVENING WL EXIT INTO LK MI...HOWEVER THE CDFNT TO STILL MOVE THRU THE FCST AREA DURING THE LATE EVENING OR EARLY MORNING HOURS. WL NEED TO CARRY POPS THRU THE ENTIRE AREA THIS EVENING AND TAPER DOWN TO ISOLATED OVER E-CNTRL WI DURING THE LATE NGT HOURS. MIN TEMPS TO RANGE FROM THE MID 50S N-CNTRL...TO THE LWR-MID 60S E-CNTRL. THE HI PRES IS FCST TO MOVE INTO THE WRN GREAT LKS ON WED AND BRING MORE SUNSHINE...SLIGHTLY COOLER TEMPS AND LESS HUMIDITY TO NE WI. THIS HI PRES IS FAIRLY WEAK AND WL CONT TO WATCH FOR ANY PCPN ACTIVITY ALONG THE LKBRZ BNDRY WED AFTERNOON. LOOK FOR MAX TEMPS TO BE NEAR SEASONAL NORMS FOR EARLY JULY WHICH IS TYPICALLY IN THE LWR 80S. .LONG TERM...WED NGT THROUGH NEXT TUE. GENERALLY QUIET WX EXPECTED EARLY IN THE PERIOD. AT VARIOUS TIMES...MODELS HINTING AT SOME PCPN OVER NRN WI AS WK FRONTAL BOUNDARY SAGS INTO THE AREA. COULD MAKE A CASE FOR POPS ACRS THE N THU AND AGAIN FRI. OPTED TO LEAVE THU DRY RATHER THAN PUT IN SLGT CHC POPS NOW. LATER SHIFTS CAN ADD IF IT STILL LOOKS LIKE THERE IS SOME PCPN POTENTIAL. PROBABLY A BETTER CASE CAN BE MADE FOR PCPN ON FRI...AS WK SLY FLOW ON BACK SIDE OF RETREATING HIGH WL HAVE A LITTLE MORE TIME TO BRING MOISTURE NWD INTO THE AREA. SO ADDED CHC POPS TO THE N/NE FRI. STAYED PRETTY CLOSE TO PREV FCST FOR TEMPS. WEEKEND SYSTEM LOOKING TO HAVE A LITTLE MORE RAIN-PRODUCING POTENTIAL THAN YDA. THE WEST COAST TROF WL BE A LITTLE MORE AMPLIFIED BY LATE THIS WK...RESULING IN MORE OF A WSWLY UPR FLOW TOWARD THE AREA. IT NOW APPEARS A ROUND OR TWO OF STORMS DEVELOPING IN ISENT LIFT ZONE AHEAD OF THE UPR SHRTWV COULD AFFECT THE AREA...WITH MAIN FRONT LIKELY TO COME THROUGH DURING THE LATTER PART OF THE WEEKEND. SOME INDICATIONS THE FRONT COULD STALL CLOSE ENOUGH TO CAUSE CHC OF PCPN TO LINGER ACRS THE S INTO EARLY NEXT WK...BUT AT THIS POINT TRENDED FCST TOWARD THE MORE AMPLIFIED LOOK OF THE EMCWF WITH THE ERN TROF. THAT SHOULD DRIVE THE FRONT FAR ENOUGH S TO KEEP RN CHCS S OF THE AREA...AND BRING A COUPLE DRY DAYS WITH A LITTLE COOLER TEMPS AND LOWER HUMIDITIES. && .AVIATION...SCT TSTMS MAY OCCUR THROUGHOUT NE WI LATE THIS AFTERNOON THRU THE EVENING HOURS AS A SFC TROF AND CDFNT PUSH THRU THE STATE. FOR THE MOST PART...VFR CONDITIONS ARE ANTICIPATED. HOWEVER...BRIEF MVFR CIGS/VSBYS WL OCCUR IN AND AROUND ANY TSTMS. && .GRB WATCHES/WARNINGS/ADVISORIES... NONE. && KALLAS/SKOWRONSKI
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREEN BAY WI 403 AM CDT TUE JUL 5 2011 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-060915- 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- 403 AM CDT TUE JUL 5 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST WISCONSIN. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS MUCH OF CENTRAL AND NORTHEAST WISCONSIN THIS AFTERNOON AND EVENING...AS A COLD FRONT MOVES THROUGH THE REGION. THE MAIN THREATS APPEAR TO BE DAMAGING WINDS AND HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE THREAT OF THUNDERSTORMS WILL RETURN SATURDAY THROUGH SUNDAY. IT IS TOO EARLY TO DETERMINE THE POTENTIAL FOR SEVERE WEATHER FROM THESE STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. LMZ521-522-541>543-060915- THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN- 403 AM CDT TUE JUL 5 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE MICHIGAN AND THE WATERS OF GREEN BAY. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING...WITH A FEW OF THE STORMS CAPABLE OF PRODUCING STRONG WINDS AND HEAVY DOWNPOURS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE THREAT OF THUNDERSTORMS WILL RETURN SATURDAY THROUGH SUNDAY. IT IS TOO EARLY TO DETERMINE THE POTENTIAL FOR SEVERE WEATHER FROM THESE STORMS. TSK/MPC
The Marquette radar (KMQT), 149 km away, was scanning. The volume nearest the first event began at 22:25 UTC.
1 thunderstorm wind. Local standard time, as filed.
Law enforcement reported trees and power lines were blown down in the town of Three Lakes.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2011Every state in 2011This day in weather historyWarnings in Wisconsin, July 2011
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: 324060.