Thunderstorms that developed in moist and unstable ahead of an approaching cold front downed trees in far northern 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.
Thunderstorms that developed in moist and unstable ahead of an approaching cold front downed trees in far northern Wisconsin.
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 22, 4:02 PM CST, 28 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREEN BAY WI 502 PM CDT MON JUN 22 2015 UPDATED AVIATION PORTION FOR 00Z TAF ISSUANCE .SHORT TERM...TONIGHT AND TUESDAY ISSUED AT 254 PM CDT MON JUN 22 2015 THE THUNDERSTORM COMPLEX THAT MOVED ACROSS THE REGION THIS MORNING PRODUCED LOCALLY HEAVY RAIN AND GUSTY WINDS. GUSTY WINDS (WAKE LOW) WERE ALSO NOTED BEHIND THE THUNDERSTORM COMPLEX WITH MOST GUSTS IN OUR AREA AROUND 35 KNOTS FOR A BRIEF PERIOD OF TIME. WILL LET THE WIND ADVISORY FOR MARINETTE AND OCONTO COUNTY EXPIRE AT 3 PM. OTHERWISE...THUNDERSTORM COMPLEX THIS MORNING COMBINED WITH 850MB WESTERLY WINDS NOT CONDUCIVE FOR SEVERE STORMS FOR THE REMAINDER OF THE AFTERNOON AND EARLY EVENING HOURS. HOWEVER...ATMOSPHERE IS BECOMING UNSTABLE AND STRONG SHEAR ALOFT. COULD NOT RULE OUT AN ISOLATED SEVERE STORM AS COLD FRONT MOVES ACROSS THE REGION BY MID EVENING. SKIES WILL BECOME MOSTLY CLEAR THIS EVENING WITH COOLER AND LESS HUMID CONDITIONS MOVING INTO THE AREA OVERNIGHT. DEWPOINTS ON TUESDAY WILL RETURN INTO THE 40S AND 50S...COMPARED TO THE 60S TO LOWER 70S TODAY. .LONG TERM...TUESDAY NIGHT THROUGH MONDAY ISSUED AT 254 PM CDT MON JUN 22 2015 PCPN TRENDS WILL BE THE MAIN FCST CONCERN. A WEAK RIDGE OF HIGH PRESSURE SHOULD BRING DRY CONDITIONS ON TUESDAY NIGHT...WITH COMFORTABLE LOWS IN THE 50S. MODELS ARE ALL ACROSS THE BOARD REGARDING PCPN CHANCES DURING THE MIDWEEK PERIOD...WITH NORTHWEST FLOW BRINGING S/W TROFS INTO THE REGION...AND A FRONTAL BOUNDARY SITUATED TO OUR SOUTH. THE NAM/GEM SHOW THE BEST PCPN CHANCES OCCURRING LATE WED AND WED NGT ACROSS C/EC WI...WHILE THE GFS IS SLOWER (WED NGT/EARLY THU) AND HAS A STRONG SFC LOW PASSING THROUGH SOUTHERN WI. THE ECMWF KEEPS THE MAIN FRONTAL PCPN SOUTH OF OUR AREA...AND FOCUSES ON THE S/W TROFS AND A WEAK CANADIAN FRONT FOR PCPN CHANCES DURING THE PERIOD. CURRENTLY FAVORING THE ECMWF...BUT NOT CONFIDENT ENOUGH IN ANY OF THE SOLUTIONS TO GO HIGHER THAN MID-RANGE POPS AT THIS TIME. WILL PLACE THE HIGHEST POPS OVER N WI ON WEDS...THEN SHIFT THEM INTO THE REST OF THE CWA WED NGT/THU. CANADIAN HIGH PRESSURE IS EXPECTED TO RESIDE OVER NORTHERN WI FROM THU NGT THROUGH SATURDAY...FOR MAINLY DRY CONDITIONS. THE GFS ATTEMPTS TO GENERATE SCT CONVECTION DUE TO DAYTIME INSTABILITY OVER OUR NW COUNTIES MOST OF THE DAYS...SO WILL COVER THIS POSSIBILITY WITH SLGT CHC POPS. MOST PLACES SHOULD BE DRY THOUGH. A COLD FRONT IS EXPECTED TO MOVE THROUGH THE REGION SOMETIME DURING THE SUNDAY TO MONDAY PERIOD...AND SHOULD BRING A CHANCE OF SHOWERS AND THUNDERSTORMS. TEMPERATURES WILL REMAIN A LITTLE BLO NORMAL FOR MOST OF THE PERIOD. KIECKBUSCH. && .AVIATION...FOR 00Z TAF ISSUANCE ISSUED AT 501 PM CDT MON JUN 22 2015 A COLD FRONT TRACKING OVER EASTERN WISCONSIN LATE THIS AFTERNOON IS LACKING CONVERGENCE...HOWEVER A SHORT WAVE TROUGH CENTERED OVER NORTHERN MINNESOTA WAS GENERATING BANDS OF SHOWERS AND STORMS OVER NORTHEAST MN AND NORTHWEST WI LATE THIS AFTERNOON AND ANTICIPATE A FEW OF THESE STORMS TO SLIDE OVER NORTHERN WISCONSIN THROUGH THIS EVENING BEFORE DIMINISHING. AFTER THIS SCATTERED CONVECTION DIMINISHES THIS EVENING...VFR CONDITIONS TO PREVAIL OVERNIGHT INTO TUESDAY. && .GRB WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM.....ECKBERG LONG TERM......KIECKBUSCH AVIATION.......TDH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREEN BAY WI 258 PM CDT MON JUN 22 2015 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-232000- VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE COUNTY-LINCOLN- LANGLADE-MENOMINEE-NORTHERN OCONTO COUNTY-DOOR-MARATHON-SHAWANO- WOOD-PORTAGE-WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-WINNEBAGO- CALUMET-MANITOWOC-SOUTHERN MARINETTE COUNTY- SOUTHERN OCONTO COUNTY- 258 PM CDT MON JUN 22 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST WISCONSIN. .DAY ONE...REST OF THE AFTERNOON AND TONIGHT THERE IS A CHANCE OF THUNDERSTORMS FOR THE REMAINDER OF THE AFTERNOON INTO EARLY THIS EVENING. A SEVERE STORM WITH LARGE HAIL AND DAMAGING WINDS IS STILL POSSIBLE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH MONDAY THUNDERSTORMS ARE POSSIBLE WEDNESDAY THROUGH THURSDAY...AND SUNDAY NIGHT INTO MONDAY...BUT IT IS TOO EARLY TO DETERMINE IF ANY OF THESE STORMS WILL BECOME SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED DURING THE LATE AFTERNOON AND EARLY EVENING. LMZ521-522-541>543-232000- THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN- 258 PM CDT MON JUN 22 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE MICHIGAN AND THE WATERS OF GREEN BAY. .DAY ONE...REST OF THE AFTERNOON AND TONIGHT THERE IS A CHANCE OF THUNDERSTORMS FOR THE LATE AFTERNOON AND EVENING. A SEVERE STORM WITH STRONG WINDS AND LARGE HAIL IS STILL POSSIBLE. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH MONDAY ADDITIONAL THUNDERSTORMS ARE POSSIBLE FROM WEDNESDAY THROUGH THURSDAY...AND SUNDAY NIGHT INTO MONDAY. ECKBERG/KIECKBUSCH
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
527 PM CDT MON JUN 22 2015
WIZ005-010>012-018-019-230000-
FLORENCE WI-FOREST WI-LINCOLN WI-LANGLADE WI-ONEIDA WI-VILAS WI-
527 PM CDT MON JUN 22 2015
...LINE OF STRONG STORMS MOVING TOWARD NORTH CENTRAL WISCONSIN
THROUGH THIS EVENING...
AT 523 PM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS EXTENDING FROM KIMBALL TO COUDERAY TO NEAR CLEAR LAKE
OVER NORTHWEST WISCONSIN...AND MOVING SOUTHEAST AT 55 MPH TOWARD
NORTH CENTRAL WISCONSIN.
A FEW STORMS MAY PRODUCE UP TO ONE INCH SIZE HAIL AND DAMAGING WIND
GUSTS TO 60 MPH.
LOCATIONS IMPACTED INCLUDE...
ANTIGO...RHINELANDER...CRANDON...EAGLE RIVER...MERRILL...FLORENCE...
LAC DU FLAMBEAU...TOMAHAWK...PHELPS...BOULDER JUNCTION...WOODBORO...
WINCHESTER...TIPLER...PARRISH...POPPLE RIVER...SQUIRREL LAKE...
PEARSON...COUNCIL GROUNDS STATE PARK...TRIPOLI AND WILLOW RESERVOIR.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
NORTH CENTRAL WISCONSIN AND FAR NORTHEAST WISCONSIN.
LAT...LON 4614 8909 4602 8882 4598 8864 4602 8853
4593 8818 4510 8907 4512 9005 4598 9005
4599 8993 4630 8993
TIME...MOT...LOC 2223Z 323DEG 46KT 4650 9032 4580 9129 4529 9229
TDHThe Marquette radar (KMQT), 137 km away, was scanning. The volume nearest the first event began at 22:27 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds downed several trees about three miles northeast of Conover. The time of this event was estimated based on radar data.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2015Every state in 2015This day in weather historyWarnings in Wisconsin, June 2015
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: 584805.