A cold front moved into a moderately unstable airmass and produced thunderstorms over north-central Wisconsin. Some of the storms produced penny to nickel size hail, wind damage, and heavy rain that caused urban flooding.
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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 moved into a moderately unstable airmass and produced thunderstorms over north-central Wisconsin. Some of the storms produced penny to nickel size hail, wind damage, and heavy rain that caused urban flooding.
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 6, 1:26 PM CST, 3 hours 2 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREEN BAY WI 226 PM CDT SUN JUL 6 2014 FORECAST DISCUSSION FOR ROUTINE AFTERNOON FORECAST ISSUANCE .SHORT TERM...TONIGHT AND MONDAY ISSUED AT 225 PM CDT SUN JUL 6 2014 CONVECTIVE TRENDS LATE THIS AFTERNOON/EVENING AND FOR MON AFTERNOON REMAIN THE MAIN CONCERN. THE 19Z MSAS SFC ANALYSIS INDICATED A CDFNT EXTENDED FROM THE MN ARROWHEAD SW THRU NW WI...S-CNTRL MN INTO ERN NEBRASKA. ORGANIZED TSTM ACTIVITY HAS HAD A TOUGH TIME GETTING GOING DUE TO A STUBBORN STRATUS DECK WHICH HAS BLANKETED MOST OF WI ALL DAY. WHERE THE CLOUDS HAD THINNED...STORMS HAVE TRIED TO DEVELOP OVER N-CNTRL AND W-CNTRL WI. TEMPS UNDER THE CLOUDS WERE STUCK IN THE UPR 60S TO MID 70S...WHILE AREAS IN THE CLEARING HAD ZOOMED INTO THE MID 80S. THE CDFNT TO COMPLETE ITS PASSAGE THRU THE REMAINDER OF THE WI THIS EVENING WITH SHWRS/TSTMS ENDING FROM WEST TO EAST. STILL A CONCERN AS TO WHETHER ANY OF THESE STORMS WL BE SEVERE DUE TO THE STRATUS CLOUDS HOLDING POTENTIALLY HIGHER INSTABILITY AT BAY. BELEIVE THERE HAS BEEN ENUF CLEARING AHEAD OF THE CDFNT TO ALLOW STORMS TO BUILD LATE THIS AFTERNOON...THUS AN ACTIVE EVENING AND THE SPC SLIGHT RISK REMAINS PLAUSIBLE. ONCE THE FNT MOVES THRU... SUBSIDENCE AND SLIGHTLY DRIER AIR SHOULD BRING DECREASING CLOUDS FORO THE OVRNGT HOURS. DESPITE THE CLEARING TREND...ENUF LOW- LEVEL MOISTURE LINGERS TO HOLD TEMPS UP TNGT. LOOK FOR MIN TEMPS TO RANGE FROM THE UPR 50S NORTH TO THE MID 60S E-CNTRL WI. DRY WEATHER TO NOT LAST LONG AS A SHORTWAVE TROF/ATTENDANT CDFNT SWEEPS SE ACROSS THE UPR MS VALLEY AND PUSHES TOWARD THE WRN GREAT LAKES MON AFTERNOON. WHILE THE AIR MASS WL NOT BE AS MOIST AS SUNDAY (DEW POINTS ABOUT 10 DEGS LWR)...THE MID-LEVEL LAPSE RATES ARE SIMILAR AND THERE IS BETTER UPR JET SUPPORT TO ADD SOME LIFT. HAVE FOCUSED POPS FOR THE AFTERNOON HOURS AND WL HAVE TO MONITOR STORM STRENGTH AS A FEW OF THESE STORMS COULD BECOME BORDERLINE SEVERE. MAX TEMPS TO BE IN THE UPR 70S TO LWR 80S RANGE. .LONG TERM...MONDAY NIGHT THROUGH SUNDAY ISSUED AT 225 PM CDT SUN JUL 6 2014 PCPN TRENDS WILL BE THE MAIN FCST CONCERN DURING THE EXTENDED PERIOD. INTERESTING SETUP ON MONDAY NIGHT/EARLY TUESDAY...AS A STRONG S/W TROF AND COUPLED UPPER JETS COMBINE TO INDUCE CYCLOGENESIS ALONG A WEAK FRONTAL BOUNDARY SAGGING THROUGH NORTHERN WI. ECMWF/SREF PAINT A BULLSEYE OF SIGNIFICANT QPF (0.50 TO 1.OO INCH) ACROSS THE MIDDLE OF GRB CWA...WHILE THE NAM/GFS/GEM FOCUS THE MAIN AXIS OF PCPN OVER CENTRAL WI. GIVEN THE DEGREE OF DYNAMICS...ABUNDANT MOISTURE AND SOME ELEVATED INSTABILITY...EXPECT WIDESPREAD SHOWERS/SCT TSTMS TO DEVELOP...WITH GOOD POTENTIAL FOR HEAVY RAINFALL. WILL BUMP POPS UP TO CATEGORICAL ON MONDAY NIGHT. THE FRONTAL BOUNDARY WILL LINGER OVER THE AREA INTO TUESDAY AFTERNOON...WITH A REINFORCING SHOT OF CANADIAN AIR ARRIVING TUESDAY NIGHT INTO EARLY WEDNESDAY. THESE FRONTS...PLUS THE TAIL END OF A S/W TROF MOVG THROUGH NE WI...WILL KEEP A CHANCE OF SHOWERS AND STORMS IN THE FCST THROUGH WEDNESDAY MORNING. CANADIAN HIGH PRESSURE IS EXPECTED TO ARRIVE WEDNESDAY AFTERNOON... THEN LINGER OVER THE WESTERN GREAT LAKES THROUGH THURSDAY NIGHT. THIS WILL RESULT IN A DRY AND COOLER PERIOD...WITH HIGHS IN THE 70S. AS THE CANADIAN HIGH SHIFTS EAST...RETURN FLOW AND ASSOCIATED MOISTURE/INSTABILITY WILL MOVE BACK INTO NC/C WI BY FRIDAY AFTERNOON...LEADING TO A CHANCE OF TSTMS. A COLD FRONT AND SOME JET ENERGY APPROACHING FROM THE NORTHERN PLAINS MAY BRING A MORE SIGNIFICANT ROUND OF STORMS THROUGH THE FORECAST AREA ON FRIDAY NIGHT AND SATURDAY. ASSUMING THAT THE FRONT CLEARS THE REGION LATER SATURDAY...PLEASANT WEATHER SHOULD RETURN FOR SUNDAY. && .AVIATION...FOR 18Z TAF ISSUANCE ISSUED AT 1236 PM CDT SUN JUL 6 2014 STRATUS DECK WITH CIGS IN THE LIFR TO MVFR RANGE TO PERSIST OVER NE WI THRU AT LEAST MID-AFTERNOON WITH SOME CLEARING TAKING PLACE FROM WEST TO EAST. MAIN FCST ISSUE TO BE EXTENT AND SEVERITY OF CONVECTIVE DEVELOPMENT AHEAD OF THE MN CDFNT. AIR MASS IS STILL QUITE UNSTABLE AHEAD OF THE FNT (ONCE THE CLOUDS THIN OUT) AND ANTICIPATE STRONG TO SEVERE TSTMS TO DEVELOP OVER WRN WI WITH AN E-SE MOVEMENT THRU CNTRL WI LATE THIS AFTERNOON AND ERN WI EARLY THIS EVENING. CIGS/VSBYS SHOULD RISE INTO THE MVFR/VFR RANGE UNTIL FROPA OCCURS...THEN CLEARING SKIES LATER THIS EVENING WL BRING VFR CONDITIONS TO ALL NE WI TAF SITES. QUIET WEATHER TO NOT LAST LONG AS A SHORTWAVE TROF/SECONDARY CDFNT SWING SE TOWARD THE REGION BY MON AFTERNOON...BRINGING THE NEXT CHC FOR PCPN. && .GRB WATCHES/WARNINGS/ADVISORIES... BEACH HAZARDS STATEMENT UNTIL 10 PM CDT THIS EVENING FOR WIZ022- 040-050. && SHORT TERM.....AK LONG TERM......TSK AVIATION.......AK
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREEN BAY WI 222 PM CDT SUN JUL 6 2014 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-071930- 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- 222 PM CDT SUN JUL 6 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST WISCONSIN. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS ALL OF NORTHEAST WISCONSIN THIS EVENING. DAMAGING WINDS...HAIL AND HEAVY RAINFALL WILL BE THE PRIMARY THREATS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY THERE IS A CHANCE OF THUNDERSTORMS AT TIMES FROM MONDAY AFTERNOON THROUGH TUESDAY EVENING. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED... BUT LOCALLY HEAVY RAINFALL IS POSSIBLE MONDAY NIGHT. THERE A CHANCE OF THUNDERSTORMS AGAIN FROM FRIDAY AFTERNOON THROUGH SATURDAY. IT IS TOO EARLY TO DETERMINE IF SEVERE WEATHER WILL DEVELOP DURING THIS PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING. LMZ521-522-541>543-071930- THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN- 222 PM CDT SUN JUL 6 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE MICHIGAN AND THE WATERS OF GREEN BAY. .DAY ONE...TONIGHT THERE IS A CHANCE OF THUNDERSTORMS THIS EVENING. ISOLATED STRONG STORMS MAY PRODUCE GUSTY WINDS AND HAIL. GUSTY SOUTH WINDS AND LARGE WAVES COULD RESULT IN HAZARDOUS CONDITIONS FOR SMALL CRAFT...AND CREATE DANGEROUS CURRENTS FOR SWIMMERS...THIS EVENING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY THERE IS CHANCE OF THUNDERSTORMS AT TIMES FROM MONDAY NIGHT THROUGH TUESDAY EVENING. ALTHOUGH WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...LOCALLY HEAVY RAINFALL MAY OCCUR MONDAY NIGHT. THERE IS ALSO A CHANCE OF STORMS ON FRIDAY NIGHT AND SATURDAY... BUT IT IS TOO EARLY TO DETERMINE IF SEVERE WEATHER WILL OCCUR. AK/TSK
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 322 PM CDT SUN JUL 6 2014 WIZ010-011-018-019-030-035-036-062115- FOREST-LANGLADE-LINCOLN-MARATHON-ONEIDA-PORTAGE-WOOD- 322 PM CDT SUN JUL 6 2014 ...LINE OF STRONG THUNDERSTORMS MOVING INTO CENTRAL WISCONSIN... AT 317 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 23 MILES WEST OF CRANDON TO 24 MILES NORTHWEST OF WAUSAU TO 27 MILES WEST OF WISCONSIN RAPIDS TO 45 MILES SOUTHWEST OF WISCONSIN RAPIDS...MOVING EAST AT 45 MPH. ONE HALF INCH DIAMETER HAIL...WINDS 30 TO 40 MPH...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS. LOCATIONS IMPACTED INCLUDE... STRATFORD... PONIATOWSKI... MARSHFIELD... IRMA... BAKERVILLE... SCRANTON... OTIS... ROZELLVILLE... RIB FALLS... HEWITT... HAMBURG... FENWOOD... GUSTY WINDS MAY CAUSE LIGHT WEIGHT OBJECTS TO BE BLOWN OVER. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED. AK
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 346 PM CDT SUN JUL 6 2014 WIZ022-062100- DOOR- 346 PM CDT SUN JUL 6 2014 ...STRONG THUNDERSTORM TO AFFECT NORTHERN DOOR COUNTY... AT 342 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER THE CENTRAL SECTION OF THE BAY OF GREEN BAY...MOVING EAST AT 35 MPH. PENNY SIZE HAIL...WINDS 30 TO 40 MPH...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... NEWPORT STATE PARK BY 355 PM CDT... GUSTY WINDS MAY CAUSE LIGHT WEIGHT OBJECTS TO BE BLOWN OVER. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. AK
The Marquette radar (KMQT), 166 km away, was scanning. The volume nearest the first event began at 22:29 UTC.
3 hail, 2 thunderstorm wind, 1 heavy rain. Local standard time, as filed.
Thunderstorms produced dime to quarter size hail for about 10 minutes north of Boulder Junction. Winds from the storms also downed branches up to 6 inches in diameter.
A thunderstorm produced quarter size hail north of Boulder Junction.
Thunderstorm winds downed trees in Lac du Flambeau.
A line of thunderstorms produced torrential rainfall in the Rhinelander area as it slowly moved to the south. The rain caused street flooding in downtown Rhinelander. A few miles west of downtown Rhinelander, the automated weather observation system at Rhinelander Airport recorded 1.55 inches of rain in 19 minutes, including 0.81 inch in just five minutes between 7:02 PM and 7:07 PM CDT.
Thunderstorm winds downed trees at Pine Lake and produced pea size hail.
A thunderstorm produced penny size hail in Rhinelander.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2014Every state in 2014This day in weather historyWarnings in Wisconsin, July 2014
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: 525193, 525192, 525195, 536081, 525196, 525194.