Slow-moving thunderstorms developed in a warm, humid air mass ahead of a cold front. ).
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.
Slow-moving thunderstorms developed in a warm, humid air mass ahead of a cold front. The storms produced as much as 4.75 inches of rain near Porterfield (Marinette Co.). Farm fields were flooded and low-lying roads were covered by water. Heavy rainfall also caused flooding of low-lying areas west of Marathon City (Marathon Co.).
In addition to the heavy rainfall, the storms produced small hail, and winds of 50 mph that uprooted a few trees in the wet soil.
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 May 26, 1:35 PM CST, 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREEN BAY WI 235 PM CDT MON MAY 26 2014 FORECAST DISCUSSION FOR ROUTINE AFTERNOON FORECAST ISSUANCE .SHORT TERM...TONIGHT AND TUESDAY ISSUED AT 234 PM CDT MON MAY 26 2014 THE LATEST RUC ANALYSIS AND SATELLITE/RADAR IMAGERY SHOW A WEAK COOL FRONT POSITIONED FROM WESTERN LAKE SUPERIOR TO CENTRAL MINNESOTA EARLY THIS AFTERNOON. AHEAD OF THIS FRONT...RIGHT REAR QUAD OF A 75+ KT JET STREAK AND BROAD MID-LEVEL CONVERGENCE ARE PRODUCING SCATTERED SHOWERS AND STORMS AS COVERAGE CONTINUES TO SLOWLY INCREASE THIS AFTERNOON. STILL THOUGH...DESPITE ML CAPES INCREASING TO GREATER THAN 800 J/KG...COVERAGE REMAINS ISOLATED TO SCATTERED IN NATURE...THUS HAVE BROUGHT CHANCES OF PRECIP DOWN FOR THE REST OF THE AFTERNOON ACROSS PARTS OF CENTRAL AND EAST-CENTRAL WISCONSIN. 0-6KM BULK SHEAR VALUES REMAIN IN THE 10-20 KT RANGE SO ANY SEVERE THREAT IS VERY LOW. THE MAIN THREAT CONTINUES TO BE LOCALIZED HEAVY RAIN FOR THE REST OF THE DAY. WITH THE COVERAGE OF STORMS A LITTLE LESS THAN ANTICIPATED...TEMPERATURES HAVE WARMED INTO THE LOWER TO MIDDLE 80S ACROSS MUCH OF THE AREA. AS THE COOL FRONT SHIFTS SOUTHEAST TONIGHT...SHOWER AND THUNDERSTORM CHANCES ARE THE MAIN FORECAST CONCERNS. TONIGHT...THE WEAK COLD FRONT OVER NORTHEAST MINNESOTA WILL SAG SOUTHWARD TONIGHT AND BECOME HARD TO DISCERN BY THE TIME IT POSSIBLY REACHES CENTRAL TO EAST-CENTRAL WISCONSIN BY 12Z TUE. SCT SHOWERS AND STORMS WILL LIKELY CONTINUE INTO EARLY THIS EVENING AHEAD OF THE FRONT UNTIL DAYTIME INSTABILITY WANES. WITH SUCH LIGHT WIND FIELDS ALONG THE FRONT...HAVE A HARD TIME SEEING CONVERGENCE PRODUCING ANYTHING OTHER THAN ISOLATED COVERAGE OF SHOWERS/STORMS. BETTER CHANCES SHOULD OCCUR FROM WEAK SHORTWAVE ENERGY OVER THE PLAINS THAT MOVES EAST INTO THE STATE AND HELPS PRODUCE AN AREA OF MID-LEVEL CONFLUENT FLOW OVER CENTRAL AND EAST-CENTRAL WISCONSIN. ELEVATED CAPES IN THIS AREA WILL REACH UP TO AROUND 500 J/KG SO WILL HAVE SUFFICIENT INSTABILITY FOR THE CHANCE OF SHOWERS AND STORMS. WILL PLACE THE HIGHEST CHANCES IN THIS AREA TONIGHT. WIND FIELDS REMAIN UNDER 20 KTS ALOFT...SO THE MAIN THREAT WILL CONTINUE TO BE HEAVY RAINFALL. CHANCE OF PRECIP WILL DIMINISH FURTHER NORTH. WITH SUCH A MOIST AND HUMID AIRMASS IN PLACE...SHOULD HAVE A MUGGY NIGHT WITH TEMPS FALLING INTO THE UPPER 50S NORTH TO MID 60S SOUTH. TUESDAY...THE SURFACE COLD FRONT WILL CONTINUE TO SAG SOUTH INTO NORTHERN ILLINOIS BY THE END OF THE AFTERNOON. COOLER AND DRIER AIR WILL NOT RESIDE IMMEDIATELY BEHIND THE FRONT SO PWATS WILL REMAIN UPWARDS OF 1.5 INCHES OVER CENTRAL AND EAST-CENTRAL WISCONSIN FOR MUCH OF THE DAY. ALTHOUGH THE MID-LEVEL CONFLUENCE ZONE WILL DROP TO SOUTHERN WISCONSIN BY AFTERNOON...CONVECTIVE TEMPERATURES ARE ONLY PROJECTED TO BE IN THE MIDDLE 70S WHICH SHOULD BE BREACHED IN THE AFTERNOON WITH SUFFICIENT HEATING. WITH LARGE SCALE FORCING (STILL RATHER WEAK) DROPPING SOUTH OF THE AREA...AM THINKING COVERAGE SHOULD BE LESS THAN TODAY SO DROPPED SHOWER AND THUNDERSTORM CHANCES. THE DRIER AIR DOES START TO MAKE PROGRESS INTO NORTH-CENTRAL WISCONSIN DURING THE AFTERNOON...SO WILL END PRECIP CHANCES BY LATE IN THE PERIOD. LIKE TODAY...WINDS ALOFT REMAIN IN THE 10-20 KT RANGE...SO THE THREAT OF ORGANIZED CONVECTION IS MINIMAL. BUT ANY SLOW MOVING STORMS COULD PRODUCE HEAVY RAINFALL. HIGHS IN THE MID 70S TO LOWER 80S. .LONG TERM...TUESDAY NIGHT THROUGH MONDAY ISSUED AT 234 PM CDT MON MAY 26 2014 A FEW SHOWERS OR STORMS MAY LINGER INTO THE EVENING HOURS OVER CENTRAL AND EAST CENTRAL WISCONSIN TUESDAY EVENING AS A FRONTAL BOUNDARY SAGS INTO NORTHERN ILLINOIS. A SURFACE CANADIAN HIGH PRESSURE RIDGE BUILDS INTO THE REGION FROM THE NORTH FOR THE REST OF THE NIGHT. A FRONTAL SYSTEM SLIDES OVER SOUTHERN CANADA AND THE NORTHERN PLAINS ON WEDNESDAY...BUT PROGS DIMINISH THIS FEATURE AS IT TRACKS INTO THE BUILDING UPPER RIDGE. THIS UPPER RIDGE WILL CONTINUE TO AMPLIFY OVER THE MID SECTION OF THE COUNTRY INTO SOUTHERN CANADA FOR THE REST OF THE WEEK FOR A DRY PERIOD. ITS POSSIBLE A FEW PIECES OF ENERGY CAN WORK OVER THE RIDGE AND THEN SLIP INTO THE NORTHWEST FLOW OVER THE STATE FOR THE LATER HALF OF THE WEEK. A FEW MODELS HINT OF A A WEAK FRONTAL BOUNDARY DROPPING INTO NORTHERN WISCONSIN ON THURSDAY WHILE THE MAIN SHORT WAVE ENERGY PASSES OVER THE FAR NROTHERN GREAT LAKES REGION. BUT WILL CONTINUE WITH THE DRY FORECAST DUE TO THE DRY SURFACE RIDGE ANCHORED OVER THE REGION. PRECIPITATION CHANCES INCREASE NEXT WEEKEND FROM NORTHWEST TO SOUTHEAST AS THE UPPER RIDGE BREAKS DOWN AND THE NEXT FRONTAL SYSTEM SLIDES FROM THE NORTHERN PLAINS INTO THE GREAT LAKES REGION LATER SATURDAY THROUGH NEXT MONDAY. MILD DRY CONDITIONS TO REMAIN OVER THE REGION THIS WEEK BUT WITH THE EASTERLY FLOW...COOLER READINGS WILL BE FOUND ALONG THE BAY AND LAKESHORE REGION. && .AVIATION...FOR 18Z TAF ISSUANCE ISSUED AT 1125 AM CDT MON MAY 26 2014 THOUGH THE RADAR IS LARGELY QUIET AT THE MOMENT...THE TREND WILL BE FOR INCREASED SHOWER/TSTM ACTIVITY DURING THE PERIOD OF PEAK HEATING THIS AFTERNOON/EARLY EVENING...AS A VERY MOIST AIR MASS DESTABILIZES. HEAVY RAINFALL WILL BE THE MAIN THREAT WITH THE STORMS. ADDED A TEMPO GROUP FOR THUNDER THIS AFTERNOON...BUT LEFT CONDITIONS AS VFR DUE TO UNCERTAINTY IN COVERAGE. A COLD FRONT WILL THEN SAG SOUTH ACROSS THE FORECAST AREA TONIGHT...REACHING RHI LATE IN THE OVERNIGHT...AND THE REST OF THE TAF SITES TUESDAY MORNING. WIDELY SCATTERED SHOWERS AND STORMS WILL REMAIN POSSIBLE THROUGH THE NIGHT AHEAD OF THE FRONT...WITH BETTER CHANCES OVER CENTRAL AND EAST-CENTRAL WISCONSIN THAN FARTHER NORTH. LOW CLOUDS AND FOG MAY ALSO DEVELOP ALONG AND BEHIND THE FRONT DURING THIS TIME...WITH CONDITIONS POTENTIALLY DETERIORATING TO IFR. MORE SHOWERS AND STORMS POPPING UP WITH THE HEAT OF THE DAY ON TUESDAY. && .GRB WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM.....MPC LONG TERM......TDH AVIATION.......MPC
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREEN BAY WI 236 PM CDT MON MAY 26 2014 WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-271945- 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- 236 PM CDT MON MAY 26 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST WISCONSIN. .DAY ONE...TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED TONIGHT AS A SLOW MOVING COLD FRONT SAGS SOUTH THROUGH THE REGION. THE THREAT OF SEVERE THUNDERSTORMS REMAINS LOW...THOUGH A FEW STRONG STORMS WILL PRODUCE HEAVY RAINFALL AND POSSIBLY SOME WIND GUSTS OVER 40 MPH FOR THE REST OF THE AFTERNOON AND INTO EARLY EVENING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH MONDAY THE CHANCE OF THUNDERSTORMS WILL CONTINUE ON TUESDAY. A FEW STRONG THUNDERSTORMS WITH HEAVY RAINFALL AND GUSTY WINDS ARE POSSIBLE IN CENTRAL WISCONSIN. THE NEXT CHANCE OF THUNDERSTORMS ARRIVES OVER CENTRAL AND NORTH CENTRAL WISCONSIN ON SATURDAY...AND THROUGH ALL OF NORTHEAST WISCONSIN SATURDAY NIGHT INTO SUNDAY...IN ASSOCIATION WITH THE NEXT COLD FRONT. IT IS TOO EARLY TO DISCERN WHETHER ANY OF THESE STORMS COULD BECOME SEVERE. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE URGED TO RELAY ANY REPORTS OF RAINFALL IN EXCESS OF AN INCH. LMZ521-522-541>543-271945- THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN- 236 PM CDT MON MAY 26 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE MICHIGAN AND THE WATERS OF GREEN BAY. .DAY ONE...TONIGHT SCATTERED THUNDERSTORMS ARE EXPECTED TONIGHT AS A SLOW MOVING COLD FRONT SAGS SOUTH THROUGH THE REGION. SEVERE WEATHER IS NOT EXPECTED...THOUGH LOCALLY HEAVY DOWNPOURS ARE POSSIBLE. INCREASING LOW-LEVEL MOISTURE WILL RESULT IN MARINE FOG DEVELOPMENT THROUGH TUESDAY. THE FOG MAY BECOME DENSE IN SOME AREAS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH MONDAY ISOLATED THUNDERSTORMS ARE POSSIBLE ON TUESDAY...BUT SEVERE WEATHER IS NOT EXPECTED. THE NEXT CHANCE OF THUNDERSTORMS ARRIVES SATURDAY NIGHT AND SUNDAY...IN ASSOCIATION WITH THE NEXT COLD FRONT. IT IS TOO EARLY TO DISCERN WHETHER ANY OF THESE STORMS COULD BECOME SEVERE. MPC/TH
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 307 PM CDT MON MAY 26 2014 WIZ013-073-262045- NORTHERN MARINETTE COUNTY-SOUTHERN MARINETTE COUNTY- 307 PM CDT MON MAY 26 2014 ...STRONG THUNDERSTORM NEAR MICHIGAN WISCONSIN BORDER... AT 303 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER SOUTHWESTERN MENOMINEE COUNTY...MOVING EAST AT 10 MPH. ONE HALF INCH DIAMETER HAIL...WINDS 40 TO 45 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THIS STORM. * THE THUNDERSTORM WILL BE NEAR... MCALLISTER BY 320 PM CDT... GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED. BERSCH
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
325 PM CDT MON MAY 26 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0319 PM HAIL MCALLISTER 45.33N 87.71W
05/26/2014 E0.25 INCH MARINETTE WI LAW ENFORCEMENT
&&
BERSCHSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREEN BAY WI 329 PM CDT MON MAY 26 2014 WIZ022-073-262130- DOOR-SOUTHERN MARINETTE COUNTY- 329 PM CDT MON MAY 26 2014 ...STRONG THUNDERSTORMS OVER SOUTHERN MARINETTE COUNTY... AT 326 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 15 LAKE NOQUEBAY TO CARBONDALE MICHIGAN...MOVING SOUTHEAST AT 20 MPH. DIME SIZE HAIL...WINDS 30 TO 40 MPH...HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS. LOCATIONS IMPACTED INCLUDE... LOOMIS... PORTERFIELD... CHAMBERS ISLAND... MARINETTE... GUSTY WINDS MAY CAUSE LIGHT WEIGHT OBJECTS TO BE BLOWN OVER. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED. MPC
The national radar mosaic for the moment the first event began.
2 heavy rain. Local standard time, as filed.
Thunderstorms produced small hail and two periods of heavy rainfall with up to 4.75 inches of rain in the Porterfield area. Runoff from the heavy rain caused lowland flooding in the Townships of Porterfield, Lake and Grover. Wind gusts to 50 mph uprooted some trees in the saturated soil.
Runoff from heavy rainfall caused flooding of lowland areas just west of Marathon City. A car traveling at a high rate of speed had its bumper removed after the vehicle hit water on the road.
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, May 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: 520303, 521416.