Unstable air combined with a surface front and an upper level disturbance to produce severe thunderstorms across northern Wisconsin. High winds from the storms, some estimated as strong as 90 mph, caused considerable damage to trees and power lines as the storms moved through north-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.
Unstable air combined with a surface front and an upper level disturbance to produce severe thunderstorms across northern Wisconsin. High winds from the storms, some estimated as strong as 90 mph, caused considerable damage to trees and power lines as the storms moved through north-central and northeast Wisconsin. Roads across parts of northern Wisconsin were blocked by downed trees and power lines, including most of the roads in the town of Nashville (Forest Co.) where numerous homes were damaged.
Power was knocked out to more than 15,000 Wisconsin Public Service customers in Oneida County, Forest County, Langlade County, Marinette County and Door County for at least part of the night. On the morning of the 24th there were still 8,500 customers without power, 500 of whom did not have electricity restored by late afternoon.
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 23, 2:44 PM CST, 1 hour 39 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREEN BAY WI 344 PM CDT WED JUN 23 2010 .SHORT TERM...TONIGHT AND THURSDAY. POTENTIAL FOR CONVECTION TONIGHT AND ITS INTENSITY ARE THE MAIN CONCERNS IN THE SHORT TERM. SCATTERED SHOWERS AND SOME THUNDERSTORMS DEVELOPED ACROSS NORTHERN WISCONSIN IN THE VICINITY OF A SURFACE BOUNDARY. AT 20Z A SURFACE COLD FRONT EXTENDED SOUTHWEST...ACROSS WESTERN WISCONSIN...FROM A LOW IN THE MINNESOTA ARROWHEAD. A MID LEVEL SHORT WAVE WAS MOVING EASTWARD ACROSS MN TODAY SO AT LEAST A CHANCE OF THUNDERSTORMS CONTINUES UNTIL THE COLD FRONT AND SHORT WAVE PASS THROUGH THE CWA. SEVERE WEATHER CANNOT BE RULED OUT WITH THESE STORMS AS SBCAPES WERE IN EXCESS OF 1000 J/KG WITH LITTLE SBCIN AND THERE WAS SOME LOW LEVEL SHEAR THERE. BETTER POTENTIAL FOR SEVERE WOULD BE SOUTH OF THE FORECAST AREA WHERE SHEAR AND INSTABILITY WERE MORE IMPRESSIVE. ONCE THE FRONT AND SHORT WAVE HAVE PASSED...PATCHY FOG IS POSSIBLE BUT OTHERWISE NO WEATHER EXPECTED. .LONG TERM...THURSDAY NIGHT THROUGH SUNDAY. MAIN FOCUS FOR THIS PERIOD WILL BE TWO ROUNDS OF CONVECTION BETWEEN FRIDAY NIGHT AND SUNDAY. FOR FRIDAY...WILL CONTINUE A CHANCE OF SHOWERS AND THUNDERSTORMS OVER THE FAR NORTH. FOR FRIDAY NIGHT...THE FIRST ROUND OF CONVECTION WILL ROLL ACROSS THE FORECAST AREA...BRINGING SOME POTENTIAL FOR SEVERE WEATHER AND HEAVY RAINS. ON SATURDAY...BELIEVE MOST OF THE PRECIPITATION WILL HAVE EXIT NORTHEAST WISCONSIN DURING THE MORNING. HAVE KEPT A CHANCE OF SHOWERS AND THUNDERSTORMS DURING THE DAY...BUT LATEST WRF MODEL SUGGEST THAT WE WOULD BE CAPPED. HAVE STRUGGLED WITH POPS DURING THIS PERIOD AS I WANTED TO GO EVEN LOWER THAN THE CURRENT FORECAST. FRONTAL BOUNDARY IS EXPECTED TO BE PUSHED SOUTHWARD DUE TO OUTFLOW BOUNDARIES. HIGHS ON SATURDAY ALSO TRICKY DUE TO THE STABILIZED ATMOSPHERE. THIS WAS REFLECTED IN THE LATEST MEX GUIDANCE FROM THE GFS. HAVE TRIMMED HIGHS DOWN A DEGREE OR TWO. THE NEXT ROUND OF SHOWERS AND THUNDERSTORMS WILL MOVE ACROSS THE REGION LATER SATURDAY NIGHT INTO SUNDAY. IN THIS EVENT..THE BEST CHANCES FOR SHOWERS AND THUNDERSTORMS WILL BE ACROSS THE SOUTH. HAVE HIGHEST RAIN CHANCES IN THIS REGION. ACROSS THE EAST... THERE IS SOME QUESTION WHEN THE BEST CHANCES OF RAIN WOULD OCCUR EITHER LATE SATURDAY NIGHT OR SUNDAY MORNING. HAVE BROAD BRUSHED PRECIPITATION CHANCES FOR NOW AS LATER SHIFTS CAN FINE TUNE THE TIMING OF THESE PRECIPITATION EVENTS. BOTH EVENTS BRING THE POTENTIAL FOR HEAVY RAINS AND THE POTENTIAL FOR SEVERE WEATHER. ON SUNDAY...HIGH TEMPERATURES WILL BE HIGHLY DEPENDENT ON HOW QUICKLY THE MCS EXITS THE AREA AND HOW QUICK THE CLOUDS BREAK UP. CANADIAN HIGH PRESSURE WILL DOMINATE THE WEATHER PATTERN NEXT WEEK... BRINGING DRY CONDITIONS TO THE REGION AND SEASONABLE TEMPERATURES. && .AVIATION...THUNDERSTORMS REMAIN POSSIBLE THROUGH 06Z...THERE IS EVEN A SLIGHT CHANCE IN LAKESHORE COUNTIES THROUGH 12Z. SOME MVFR CEILINGS CAN BE EXPECTED WITH SHOWERS MOVING THROUGH THE AREA AND PATCHY FOG CAN BE EXPECTED OVERNIGHT...ESPECIALLY WHERE HEAVY RAIN FALLS. ONCE ANY MORNING FOG BURNS OFF ON THURSDAY ONLY SCATTERED TO BROKEN VFR TO MVFR CU LIKELY DURING THE DAY. && .GRB WATCHES/WARNINGS/ADVISORIES... NONE. && MG/ECKBERG
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREEN BAY WI 1152 AM CDT WED JUN 23 2010 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-241700- 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- 1152 AM CDT WED JUN 23 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL AND NORTHEAST WISCONSIN. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA THIS AFTERNOON AND EARLY EVENING. LARGE HAIL AND LOCAL DAMAGING WINDS ARE THE PRIMARY THREATS WITH THESE STORMS...BUT HEAVY RAINS ARE ALSO POSSIBLE. AN APPROACHING COLD FRONT...A SHORT WAVE TROUGH IN THE UPPER ATMOSPHERE AND AN INCREASINGLY UNSTABLE AIRMASS WILL COMBINE TO CONTINUE THE THREAT OF SEVERE STORMS THROUGH EARLY THIS EVENING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY ADDITIONAL THUNDERSTORMS ARE POSSIBLE AT TIMES FRIDAY NIGHT THROUGH SUNDAY. IT IS TOO EARLY TO DETERMINE WHETHER THESE STORMS MIGHT BE SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY BE NECESSARY THIS AFTERNOON. LMZ521-522-541>543-241700- THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN- 1152 AM CDT WED JUN 23 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE MICHIGAN AND THE WATERS OF GREEN BAY. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON. THE PRIMARY THREATS ARE LARGE HAIL AND STRONG WINDS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY ADDITIONAL THUNDERSTORMS ARE POSSIBLE AT TIMES FRIDAY NIGHT THROUGH SUNDAY. IT IS TOO EARLY TO DETERMINE WHETHER THESE STORMS MIGHT BE SEVERE.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 349 PM CDT WED JUN 23 2010 WIZ010-018-232145- LINCOLN-ONEIDA- 349 PM CDT WED JUN 23 2010 ...SPECIAL WEATHER STATEMENT... AT 341 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM ABOUT 25 MILES WEST OF TOMAHAWK. IT WAS MOVING EAST AT 30 MPH. PEA SIZE HAIL...BRIEF WIND GUSTS TO 40 MPH...AND HEAVY DOWNPOURS ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... TRIPOLI BY 410 PM CDT... TOMAHAWK BY 435 PM CDT... GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. SKOWRONSKI
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 418 PM CDT WED JUN 23 2010 WIZ010-018-232200- LINCOLN-ONEIDA- 418 PM CDT WED JUN 23 2010 ...STRONG THUNDERSTORM HEADED ACROSS NORTHERN LINCOLN COUNTY... AT 411 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR TRIPOLI IN NORTHWESTERN LINCOLN COUNTY...MOVING EAST AT 30 MPH. PEA SIZE HAIL...BRIEF WIND GUSTS TO 40 MPH...AND HEAVY DOWNPOURS ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... TOMAHAWK BY 435 PM CDT... GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. SKOWRONSKI
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 506 PM CDT WED JUN 23 2010 WIZ010-011-018-019-232245- FOREST-LANGLADE-LINCOLN-ONEIDA- 506 PM CDT WED JUN 23 2010 ...STRONG THUNDERSTORMS HEADING ACROSS SOUTHERN ONEIDA...NORTHERN LANGLADE...AND SOUTHWEST FOREST COUNTIES... AT 501 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 26 MILES WEST OF CRANDON...MOVING EAST AT 35 MPH. ONE HALF INCH DIAMETER HAIL...WINDS GUSTS UP TO 50 MPH...AND HEAVY DOWNPOURS ARE POSSIBLE WITH THIS STORM. THE THUNDERSTORM WILL MOVE ACROSS THE JEFFRIS...ENTERPRISE...AND PELICAN LAKE AREAS...AND BE NEAR CRANDON BY 545 PM CDT. GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE OBJECTS TO BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. SKOWRONSKI
The Green Bay radar (KGRB), 143 km away, was scanning. The volume nearest the first event began at 22:23 UTC.
13 thunderstorm wind, 1 funnel cloud. Local standard time, as filed.
High winds from thunderstorms downed trees and power lines. Fallen trees significantly damaged a house and blocked two roads along the southwest shore of Pelican Lake.
Thunderstorm winds downed large tree limbs and power lines on Enterprise Lake Road.
Thunderstorms downed numerous trees and power lines. One of the fallen trees damaged a house.
Thunderstorms produced winds that downed several trees and produced half inch diameter hail.
Thunderstorm winds downed trees and power lines, making many roads impassable. The storm tore the tops from trees along Highway 52. Power outages were reported from Spoon Lane, along County Highway DD, to Highway 52.
Thunderstorms winds downed numerous trees and several miles of power lines blocking most of the roads in the southern Forest County town of Nashville. At least ten houses and two out buildings sustained at least minor damage from the fallen trees.
Thunderstorm winds downed several trees around Carter.
Thunderstorm winds downed numerous trees and power lines in Lakewood.
A funnel cloud was observed near County Highway C in Carter. Time of siting is estimated.
Thunderstorm winds uprooted 8 to 12 inch diameter pine trees. The storm also flipped the 48 foot by 100 foot roof of a metal storage building onto the roof of another storage building that was about 100 feet away.
Thunderstorm winds downed numerous large trees, cutting a 100 foot wide swath through a stand of lodgepole pines.
Thunderstorm winds downed trees and power lines in Egg Harbor.
Thunderstorm winds downed a tree and power pole near County highway E and Maple Road, knocking out power to much of Baileys Harbor.
An isolated thunderstorm moved across southwest Manitowoc County near Kiel and produced a wind gust over 60 mph. The wind knocked over two utility poles, blew a trampoline 500 feet from its yard, ripped off the railings from a backyard deck, and flattened a grass field.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2010Every state in 2010This day in weather historyWarnings in Wisconsin, June 2010
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: 238361, 238523, 238832, 238368, 238533, 238369, 238829, 238534, 238845, 238364, 238365, 238535, 238367, 242546.