A thunderstorm complex that formed in Minnesota quickly moved across central and northeast Wisconsin. ).
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 thunderstorm complex that formed in Minnesota quickly moved across central and northeast Wisconsin. The storms produced damaging winds that downed numerous trees, knocked out power to more than 15,000 customers in northern and central Wisconsin, downed a barn on the east side of Wausau (Marathon Co.), and picked up a pole shed and threw it against a house near Marathon (Marathon Co.). Quarter to walnut size hail fell as the storms moved through Oconto County and heavy rainfall caused some urban flooding as the storms passed through Merrill (Lincoln Co.).
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 Jun 19, 3:10 AM CST, 1 hour 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREEN BAY WI 410 AM CDT TUE JUN 19 2012 .SHORT TERM...TODAY THROUGH WEDNESDAY...TSTMS TRENDS AND THE POTENTIAL FOR SVR WEATHER ARE THE MAIN CONCERNS...ALONG WITH A VERY SHORT-TERM THREAT OF DENSE FOG. A WELL-DEFINED WARM FRONT EXTENDED FROM SOUTHERN MN EASTWARD THROUGH CENTRAL WI EARLY THIS MORNING. ISOLD SHRA/TSRA HAVE BEEN ONGOING OVER C/EC WI...NORTH OF THIS BOUNDARY. A 40-50 KT LLJ WAS ASCENDING THE FRONTAL ZONE OVER EASTERN SD AND MN...LEADING TO WIDESPREAD TSTM ACTIVITY...INCLUDING ISOLD SVR TSTMS WITH LARGE HAIL AND GUSTY WINDS. ONE PARTICULARLY IMPRESSIVE SMALL SCALE BOW-ECHO WAS HEADED TOWARD C WI...AND SHOULD ARRIVE IN WSTRN MARATHON AND WOOD COUNTIES BEFORE 12Z. OTHER STRONG STORMS WERE DEVELOPING IN WC WI...AND HEADED TOWARD TKV/RRL. WITH FAIRLY STG ELEVATED INSTABILITY (H8 LI'S -4 TO -6) IN PLACE OVER GRB CWA...AND DEEP LAYER SHEAR OF 40-60 KTS...SUSPECT THAT STG TO SVR TSTMS WILL PERSIST AS THEY MOVE INTO THE AREA. AS THE DAY PROGRESSES...THE CONVECTIVE ACTIVITY AND SVR THREAT SHOULD SHIFT NORTH WITH THE WARM FRONT...WITH C/EC WI EVENTUALLY GETTING CAPPED OFF BY WARM H7 TEMPS DURING THE AFTERNOON. HAVE LOWERED TEMPS A DEGREE OR TWO...ESPECIALLY ACROSS NORTHERN WI...AS A RESULT OF THE EXPECTED CONVECTION... BUT C/EC WI SHOULD STILL SEE LOWER 90S. SUSPECT THAT TONIGHT WILL BE MAINLY DRY...WITH THE WARM FRONT TO OUR NORTH AND WARM TEMPS ALOFT...BUT NEEDED TO KEEP SOME SMALL POPS IN OUR NW COUNTIES TO MATCH UP WITH SURROUNDING OFFICES. ON WEDNESDAY...ADDED SOME RESOLUTION TO POPS...FOCUSING THE HIGHEST POPS OVER NC/C WI DURING THE AFTERNOON. MODELS ARE TENDING TO FOCUS MOST OF THE PCPN BEHIND THE COLD FRONT...AS THE UPPER TROF AND RRQ OF THE UPPER JET REMAIN WEST OF THE BOUNDARY. SPC HAS THE REGION IN A SEE TEXT...WITH CONCERNS THAT THE STORMS MAY NOT BE ABLE TO TAP INTO THE BETTER PRE-FRONTAL INSTABILITY. WE HAVE ANOTHER DAY TO IRON OUT THE SVR POTENTIAL FOR WEDS. IN THE VERY SHORT-TERM...DENSE FOG WAS BEING REPORTED AT SEVERAL OBS SITES IN NC/FAR NE WI. WILL HANDLE THIS WITH AN SPS...AS CLOUD COVER AND PCPN WILL BE ARRIVING IN THIS AREA IN THE NEXT FEW HOURS...WHICH SHOULD HELP TO MIX OUT THE LOW VSBYS. ALSO... SUNRISE IS ONLY AN HOUR OR SO AWAY. .LONG TERM...WEDNESDAY NIGHT THROUGH MONDAY. COLD FRONT WILL BE MOVING ACROSS NORTHEAST AND EAST CENTRAL WISCONSIN WEDNESDAY EVENING. DO EXPECT SOME STRONG OR SEVERE STORMS TO MOVE ACROSS NORTHEAST AND EAST CENTRAL WISCONSIN WEDNESDAY EVENING. MODELS SHOWING 1500 TO 2500 J/KG OF CAPE... LIFTED INDICES AROUND -6C AND 0-6KM SHEAR OF 30 TO 35 KNOTS SUPPORT THE POTENTIAL FOR SEVERE WEATHER. SOME TIMING DIFFERENCES NOTED BETWEEN THE MODELS...THEREFORE SOME QUESTIONS IN HOW MUCH PRECIPITATION WILL LINGER ACROSS THE EAST AFTER MIDNIGHT. HIGH PRESSURE WILL BUILD INTO THE REGION LATE WEDNESDAY NIGHT INTO THURSDAY MORNING. SHORTWAVE ENERGY AND WEAK SURFACE BOUNDARY NOTED MOVING SOUTHEAST OUT OF CANADA THURSDAY MORNING. THIS FEATURE COULD TRIGGER ISOLATED SHOWERS OR THUNDERSTORMS ACROSS THE FAR NORTH LATER THURSDAY AFTERNOON. WRF MODEL SHOWING SEVERAL HUNDRED J/KG OF CAPE AND LI'S DROPPING TO -3 C ON THURSDAY AFTERNOON. THURSDAY WILL BE COOLER AND CONSIDERABLY LESS HUMID THAN WEDNESDAY. SHORTWAVE ENERGY WILL SWEEP ACROSS THE AREA THURSDAY NIGHT...AND COMBINED WITH A WEAK SURFACE BOUNDARY...COULD HELP TRIGGER CONVECTION. HAVE INCREASED RAIN CHANCES FOR THURSDAY NIGHT WITH THIS FEATURE. ON FRIDAY A WEAK BOUNDARY ACROSS NORTHEAST WISCONSIN...COMBINED WITH HEATING OF THE DAY...COULD ALSO TRIGGER ISOLATED CONVECTION...ESPECIALLY DURING THE AFTERNOON AND EARLY EVENING HOURS. MODELS CONTINUE TO SHOW COMPLEX OF SHOWERS AND THUNDERSTORMS MOVING ACROSS THE AREA BETWEEN LATE FRIDAY NIGHT INTO SATURDAY NIGHT. MODELS HAVE NOT BEEN CONSISTENT IN TIMING AND PLACEMENT OF THIS FEATURE. THINK PRECIPITATION WILL WORK INTO THE FAR WEST LATE FRIDAY NIGHT...THEN MOVE ACROSS THE AREA SATURDAY INTO SATURDAY EVENING. CURRENT FORECAST HAS HIGHS POPS ACROSS THE SOUTH OR SOUTHWEST WHICH SEEMS REASONABLE GIVEN THE MODEL QPF PATTERNS AND FORCING. SUNDAY AND MONDAY SHOULD BE TRANQUIL. DID NOT MAKE ANY SIGNIFICANT CHANGES TO TEMPERATURES...BUT LATER SHIFTS WILL NEED TO MONITOR MAX TEMPERATURES ON SATURDAY. IF COMPLEX MOVES THROUGH DURING THE PEAK HEATING OF THE DAY... MAX TEMPERATURES MAY NEED TO BE LOWERED A FEW DEGREES. && .AVIATION...FOR THE 06Z TAF ISSUANCE...A FRONTAL BOUNDARY LIES EAST-WEST ACROSS CENTRAL WI FROM OSH TO Y50...WITH ISOLD SHRA/TSRA NORTH OF THE BOUNDARY. THIS FRONT IS EXPECTED TO LIFT BACK NORTH TODAY. STORMS NOW INCREASING OVER MN AND NW WI WILL SHIFT INTO CENTRAL AND NORTH CENTRAL WI EARLY THIS MORNING...WITH THE ACTIVITY BECOMING FOCUSED FARTHER NORTH THROUGH THE DAY AS THE WARM FRONT SHIFTS NORTH. ISOLD SVR TSTMS WITH LARGE HAIL AND HEAVY RAINFALL ARE POSSIBLE. HOT AND MAINLY DRY CONDITIONS ARE EXPECTED ACROSS C/EC WI THIS AFTERNOON...WITH GENERALLY DRY CONDITIONS FOR THE OVERNIGHT PERIOD. AREAS OF DENSE FOG OVER NC/FAR NE WI SHOULD IMPROVE LATE TONIGHT AS CLOUD COVER INCREASES...AND ESPECIALLY AFTER SUNRISE. LLVL WINDS ARE EXPECTED TO INCREASE OVER THE AREA TONIGHT...HENCE LLWS ADDED. TE && .GRB WATCHES/WARNINGS/ADVISORIES... NONE. && KIECKBUSCH/ECKBERG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREEN BAY WI 442 AM CDT TUE JUN 19 2012 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-200945- 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- 442 AM CDT TUE JUN 19 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST WISCONSIN. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WITH LARGE HAIL... DAMAGING WINDS AND HEAVY RAINFALL TODAY. ALTHOUGH THE INITIAL THREAT IS EXPECTED IN CENTRAL WISCONSIN EARLY IN THE DAY...THE SEVERE THREAT SHOULD SHIFT NORTH AS THE DAY PROGRESSES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THUNDERSTORMS ARE POSSIBLE ACROSS THE ENTIRE AREA WEDNESDAY AND WEDNESDAY NIGHT. ALTHOUGH THERE IS SOME UNCERTAINTY CONCERNING THE DEGREE OF THE SEVERE THREAT...IT APPEARS THAT AT LEAST ISOLATED SEVERE THUNDERSTORMS WILL DEVELOP NEAR A COLD FRONT DURING THE AFTERNOON AND EVENING HOURS. DAMAGING WINDS...LARGE HAIL AND HEAVY RAINFALL SHOULD BE THE PRIMARY THREATS. THERE IS ALSO A CHANCE OF THUNDERSTORMS AT TIMES FROM THURSDAY NIGHT THROUGH SATURDAY NIGHT...BUT WIDESPREAD SEVERE WEATHER IS NOT EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... ANY REPORTS OF HAIL...STRONG WINDS...OR RAINFALL TOTALS OVER ONE INCH SHOULD BE FORWARDED TO THE NATIONAL WEATHER SERVICE IN GREEN BAY. LMZ521-522-541>543-200945- THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN- 442 AM CDT TUE JUN 19 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE MICHIGAN AND THE WATERS OF GREEN BAY. .DAY ONE...TODAY AND TONIGHT THERE IS A CHANCE OF THUNDERSTORMS TODAY. THE STRONGER STORMS MAY PRODUCE HAIL...GUSTY WINDS AND HEAVY RAINFALL. PATCHY MARINE FOG MAY ALSO CAUSE NAVIGATION PROBLEMS FOR MARINERS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THUNDERSTORMS COULD POSE A HAZARD TO BOATERS ON WEDNESDAY AFTERNOON AND WEDNESDAY NIGHT...AND AT TIMES FROM THURSDAY NIGHT THROUGH SATURDAY NIGHT. TSK/RE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 111 AM CDT TUE JUN 19 2012 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-191100- 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- INCLUDING THE CITIES OF...EAGLE RIVER...RHINELANDER...CRANDON... TOMAHAWK...ANTIGO...KESHENA...STURGEON BAY...WAUSAU... WISCONSIN RAPIDS...STEVENS POINT...APPLETON...GREEN BAY... ALGOMA...WAUTOMA...OSHKOSH...CHILTON...TWO RIVERS...CRIVITZ 111 AM CDT TUE JUN 19 2012 ...PATCHY DENSE FOG EXPECTED OVERNIGHT... LIGHT WINDS WILL COMBINE WITH ABUNDANT LOW-LEVEL MOISTURE TO PRODUCE AREAS OF FOG OVERNIGHT. THE FOG WILL BECOME LOCALLY DENSE WITH VISIBILITIES OF ONE-QUARTER MILE OR LESS...ESPECIALLY IN RIVER VALLEYS AND OTHER SHELTERED LOW-LYING AREAS. THOSE WITH TRAVEL PLANS EARLY TUESDAY MORNING SHOULD BE ALERT FOR RAPID CHANGES IN VISIBILITY. WHEN DRIVING IN DENSE FOG...BE SURE TO SLOW DOWN...KEEP A SAFE DISTANCE FROM OTHER VEHICLES...AND USE ONLY LOW-BEAM HEADLIGHTS. THE FOGGY CONDITIONS ARE EXPECTED TO IMPROVE SHORTLY AFTER SUNRISE. KIECKBUSCH
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 426 AM CDT TUE JUN 19 2012 WIZ005-010>013-018-019-021-191130- VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE- NORTHERN OCONTO- INCLUDING THE CITIES OF...EAGLE RIVER...RHINELANDER...CRANDON... TOMAHAWK...ANTIGO 426 AM CDT TUE JUN 19 2012 ...PATCHY DENSE FOG EXPECTED IN NORTH CENTRAL AND FAR NORTHEAST WISCONSIN EARLY THIS MORNING... LIGHT WINDS WILL COMBINE WITH ABUNDANT LOW-LEVEL MOISTURE TO PRODUCE AREAS OF FOG EARLY THIS MORNING. THE FOG WILL BE LOCALLY DENSE WITH VISIBILITIES OF ONE-QUARTER MILE OR LESS...ESPECIALLY IN SHELTERED LOW-LYING AREAS OF NORTH CENTRAL AND FAR NORTHEAST WISCONSIN. THOSE WITH TRAVEL PLANS ACROSS THE NORTHWOODS EARLY THIS MORNING SHOULD BE ALERT FOR RAPID CHANGES IN VISIBILITY. WHEN DRIVING IN DENSE FOG...BE SURE TO SLOW DOWN...KEEP A SAFE DISTANCE FROM OTHER VEHICLES...AND USE ONLY LOW-BEAM HEADLIGHTS. THE FOGGY CONDITIONS ARE EXPECTED TO IMPROVE AFTER SUNRISE. KIECKBUSCH
The La Crosse radar (KARX), 165 km away, was scanning. The volume nearest the first event began at 10:39 UTC.
9 thunderstorm wind, 3 hail, 1 heavy rain. Local standard time, as filed.
Thunderstorm winds downed trees at the intersection of State Highway 97 and County Highway F.
Thunderstorm winds lifted a pole shed and threw it into the corner of a house. Nothing inside the shed was damaged but the shed destroyed four nearby cars before striking the house.
Heavy rain led to minor street flooding in Merrill.
Thunderstorm winds downed trees in Wausau.
Thunderstorm winds uprooted large trees in Merrill.
Thunderstorm winds downed a barn off County Highway Z on the east side of Wausau.
Thunderstorm winds downed numerous large trees north of Antigo long U.S. Highway 45.
Numerous trees were knocked down by strong thunderstorm winds. Four structures sustained minor damage by the fallen trees.
Thunderstorm winds downed numerous large pine trees near White Lake. One of the trees knocked out a power line.
Thunderstorms produced quarter size hail and wind gusts around 50 mph at Suring.
Thunderstorms produced half dollar size hail at the Suring Waste Water Treatment Plant.
Thunderstorms produced quarter size hail at Oconto.
Thunderstorm winds downed four areas of trees at different locations throughout the island.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2012Every state in 2012This day in weather historyWarnings in Wisconsin, June 2012
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: 387685, 387715, 392562, 387686, 387694, 387691, 387688, 387693, 387689, 387683, 387684, 387687, 387692.