A weak shortwave trough and unstable conditions resulted in scattered thunderstorms over east central Wisconsin during the afternoon. A pulse thunderstorm produced a wet microburst over the Fond du lac airport.
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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 MKX wrote it up.
A weak shortwave trough and unstable conditions resulted in scattered thunderstorms over east central Wisconsin during the afternoon. A pulse thunderstorm produced a wet microburst over the Fond du lac airport.
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 Milwaukee, WI wrote its last area forecast discussion before the first event at Aug 3, 10:13 AM CST, 3 hours 33 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1113 AM CDT SUN AUG 3 2014 .UPDATE...SPS MESO PLOTS SHOW DESTABILIZATION ACROSS SRN WITH ML CAPE VALUES ALREADY TO AROUND 1000 J/KG. PRIMARY SHORTWAVE IS TRACKING FROM SE IA INTO WC IL. HOWEVER AN EXTENSION OF THIS VORT EXTENDS INTO SC WI. MESO MODELS CONTINUE TO SHOW A FAIR AMOUNT OF DEVELOPMENT THIS AFTERNOON...BUT A FORMIDABLE TRIGGER IS TOUGH TO LATCH ONTO. IN THE LOW LEVELS THERE REALLY IS NOTHING. BUT WE ARE EXPECTING THE LAKE BREEZE TO POSSIBLY SERVE AS A FOCUS. THERE JUST ISN/T MUCH GOING ON UPSTAIRS OUTSIDE OF THIS WEAK VORT AXIS. THE RAP SOUNDINGS APPEAR TO BE UNDERDOING THE CAPE WITH THE NAM SOUNDINGS MATCHING UP MORE WITH THE SPC MESO ANALYSIS. THE 12Z NAM AND 00Z ECMWF ARE BASICALLY DRY FOR THIS AFTERNOON. ALSO THE MAV/MET GUIDANCE HAS VERY LOW POPS FOR THIS AFTERNOON. AT THIS POINT WILL TREND POPS A SMIDGE LOWER AND GO WITH MORE ISOLD/SCT DEVELOPMENT. SHEAR AND MID LEVEL LAPSE RATES ARE NON-EXISTENT SO SVR POTENTIAL VERY LOW. ALSO 500 MILLIBAR TEMPS ARE -12C...SO NOT AS COLD AS YESTERDAY AND FRIDAY. PC && .AVIATION/18Z TAFS/...MAIN FOCUS IS ON COVERAGE OF CONVECTION THIS AFTERNOON. WEAK VORT AXIS EXPECTED TO MOVE THROUGH. STARTING TO SEE SOME CU POPPING. AIRMASS IS DESTABILIZING SO GOING WITH ISOLD/SCT DEVELOPMENT WITH SOME COOL AIR ALOFT AS WELL. WILL KEEP MUCH OF THIS FORECAST PERIOD VFR WITH PATCHY FOG POSSIBLE ONCE AGAIN LATER TONIGHT. FRONTAL BOUNDARY SAGS INTO SRN WI MONDAY WITH MORE NOTABLE SHORTWAVE ACTIVITY MOVING CLOSER FROM NRN WI AFFECTING THE AREA SO MAY SEE MORE COVERAGE ON THE STORMS FOR MON AFTN/EVE. PC && .PREV DISCUSSION... /ISSUED 338 AM CDT SUN AUG 3 2014/ TODAY AND TONIGHT...FORECAST CONFIDENCE MEDIUM. THE CORE OF THE SHORTWAVE TROUGH OVER IA WILL TRACK TO THE SOUTH BUT THE NORTHERN EXTENSION WILL SLOWLY MOVE ACROSS SRN WI THROUGH THE DAY. MLCAPE WILL RANGE FROM 500-1000 J/KG WITH LITTLE TO NO CAPPING. GIVEN THE TSTORM ACTIVITY THAT HAS OCCURRED FOR THE LAST SEVERAL DAYS...WOULD EXPECT SCT TSTORMS THIS AFTERNOON INTO THE EVENING WITH THE BEST FOCUS OVER THE NRN CWA AND ALONG THE LAKE BREEZE FRONT. ANOTHER SHORTWAVE TROUGH WILL APPROACH FROM THE NW LATE TNT ALONG WITH A WEAK COLD FRONT FROM THE NORTH...SO ISOLD TO SCT SHOWERS AND STORMS WILL REMAIN IN THE FORECAST. SMALL HAIL WILL LIKELY OCCUR WITH THE TSTORMS THIS AFTERNOON. HIGH TEMPS WILL BE SIMILAR TO YESTERDAY BUT WARMER NEAR THE LAKE AS THE LAKE BREEZE DEVELOPS LATER. MONDAY AND TUESDAY...FORECAST CONFIDENCE...MEDIUM A WEAK INVERTED SURFACE TROUGH IS EXPECTED TO KICK OFF MORE SHOWERS AND THUNDERSTORMS ON MONDAY. STORM MOTION WILL BE A LITTLE HIGHER THAN THE LAST FEW DAYS...UP AROUND 15 TO 20 KNOTS...SO THE STORMS SHOULD BE ABLE TO COVER A LITTLE MORE GROUND. BETWEEN THIS AND PLENTY OF INSTABILITY AND MOISTURE...DECIDED TO GO LIKELY POPS MOST PLACES. KEPT CHANCE POPS FOR MONDAY NIGHT AS A SHORTWAVE PUSHES THROUGH. WENT WITH ONLY SLIGHT CHANCE POPS TUESDAY...GOING DRY IN THE NORTHEAST AS A MUCH DRIER AIRMASS MOVES IN UNDER HIGH PRESSURE. SHOULD SEE TEMPS RIGHT AROUND NORMAL FOR MONDAY AND TUESDAY. WEDNESDAY THROUGH SATURDAY...FORECAST CONFIDENCE...MEDIUM MODELS SEEM TO BE FINALLY SETTLING ON A SOLUTION FOR THE SECOND HALF OF THE WEEK...BRINGING UPPER RIDGING AND SURFACE HIGH PRESSURE IN FOR MOST OF THIS PERIOD. KEPT A LITTLE POPS HERE AND THERE...THOUGH THESE WILL LIKELY NEED TO BE DROPPED IN THE FUTURE IF MODELS ARE PERSISTENT WITH FORECASTING THIS PATTERN. OTHERWISE...THIS SETUP SHOULD RESULT IN DRY WEATHER...WITH A GOOD AMOUNT OF SUNSHINE AND TEMPS NEAR TO A FEW DEGREES ABOVE NORMAL. AVIATION/12Z TAFS/...SCT-BKN050 WILL DEVELOP BY LATE MORNING AND LAST THROUGH THE REMAINDER OF THE DAY AND INTO MUCH OF SUN NT AS A COUPLE UPPER LEVEL DISTURBANCES AFFECT THE REGION. SCT TSTORMS ARE MAINLY EXPECTED THIS AFTERNOON WITH ISOLD TO SCT TSTORMS TNT. PATCHY FOG WILL OCCUR THROUGH SUNRISE THIS MORNING AND WILL AFFECT KMSN. OTHERWISE PATCHY FOG IS POSSIBLE AGAIN LATE SUN NT AND MAY AFFECT KMSN...KUES...KENW. && .MKX WATCHES/WARNINGS/ADVISORIES... WI...NONE. LM...NONE. && TODAY/TONIGHT AND AVIATION/MARINE...GEHRING MONDAY THROUGH SATURDAY...DDV
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 408 AM CDT SUN AUG 3 2014 WIZ046-047-051-052-056>060-062>072-040915- MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-DODGE- WASHINGTON-OZAUKEE-IOWA-DANE-JEFFERSON-WAUKESHA-MILWAUKEE- LAFAYETTE-GREEN-ROCK-WALWORTH-RACINE-KENOSHA- 408 AM CDT SUN AUG 3 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL WISCONSIN...SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT AS A COUPLE UPPER LEVEL DISTURBANCES MOVE ACROSS SOUTHERN WISCONSIN. SOME STORMS WILL CONTAIN SMALL HAIL AND GUSTY WINDS MAINLY THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THUNDERSTORMS ARE LIKELY ON MONDAY AS AN UPPER LEVEL DISTURBANCE AND A WEAK COOL FRONT PASS THROUGH THE AREA. SOME STORMS WILL CONTAIN SMALL HAIL AND GUSTY WINDS. ONLY SLIGHT CHANCES OF THUNDERSTORMS ARE EXPECTED FOR PORTIONS OF SOUTHERN WISCONSIN THE REMAINDER OF THE WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. LMZ643>646-040915- SHEBOYGAN TO PORT WASHINGTON WI- PORT WASHINGTON TO NORTH POINT LIGHT WI- NORTH POINT LIGHT TO WIND POINT WI- WIND POINT WI TO WINTHROP HARBOR IL- 408 AM CDT SUN AUG 3 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT AS A COUPLE UPPER LEVEL DISTURBANCES MOVE ACROSS SOUTHERN WISCONSIN. SOME STORMS WILL CONTAIN SMALL HAIL AND GUSTY WINDS MAINLY THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SCATTERED THUNDERSTORMS ARE FORECAST MONDAY AND MONDAY NIGHT AS AN UPPER LEVEL DISTURBANCE AND A WEAK COOL FRONT PASS THROUGH THE AREA. SOME STORMS WILL CONTAIN SMALL HAIL AND GUSTY WINDS. WWW.WEATHER.GOV/MKX MG
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 155 PM CDT SUN AUG 3 2014 WIZ051-052-058-059-032000- WASHINGTON-DODGE-FOND DU LAC-SHEBOYGAN- 155 PM CDT SUN AUG 3 2014 ...A STRONG THUNDERSTORM WILL AFFECT NORTHERN WASHINGTON...NORTHERN DODGE...SOUTHEAST FOND DU LAC...AND SOUTHWEST SHEBOYGAN COUNTIES... AT 153 PM CDT...A STRONG THUNDERSTORM WAS NEAR WAUPUN...MOVING EAST AT 25 MPH. PEA SIZE HAIL IS POSSIBLE WITH THIS STORM ALONG WITH BRIEF HEAVY RAINS. LOCATIONS IMPACTED INCLUDE... WEST BEND...WAUPUN...MAYVILLE...KEWASKUM...HORICON...LOMIRA... CAMPBELLSPORT...THERESA...BURNETT...ASHFORD...BYRON...BROWNSVILLE... WAYNE...KEKOSKEE...NEW FANE...DUNDEE...KNOWLES...MINNESOTA JUNCTION...WAUCOUSTA AND BEECHWOOD. LAT...LON 4343 8808 4345 8877 4363 8878 4370 8809 TIME...MOT...LOC 1853Z 266DEG 20KT 4355 8867 COLLAR
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 242 PM CDT SUN AUG 3 2014 WIZ051-052-032045- FOND DU LAC-SHEBOYGAN- 242 PM CDT SUN AUG 3 2014 ...A STRONG THUNDERSTORM MOVING INTO FOND DU LAC... AT 240 PM CDT...A STRONG THUNDERSTORM WAS NEAR FOND DU LAC...MOVING EAST AT 25 MPH. PEA SIZE HAIL AND HEAVY RAINFALL IS POSSIBLE WITH THIS STORM. LOCATIONS IMPACTED INCLUDE... FOND DU LAC...PLYMOUTH...NORTH FOND DU LAC...OAKFIELD...ELKHART LAKE...TAYCHEEDAH...LAMARTINE...GREENBUSH...EDEN...MOUNT CALVARY... CASCADE...WALDO...ST. CLOUD...GLENBEULAH...PEEBLES AND CALVARY. LAT...LON 4367 8859 4385 8861 4388 8792 4365 8791 TIME...MOT...LOC 1940Z 271DEG 22KT 4377 8850 COLLAR
The Green Bay radar (KGRB), 86 km away, was scanning. The volume nearest the first event began at 19:44 UTC.
1 thunderstorm wind. Local standard time, as filed.
A wet microburst brought severe winds and minor damage to the Fond du lac airport. The strong winds blew over dumpsters and portable toilets.
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, August 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: 525672.