Severe drought conditions developed across parts of north central Wisconsin early in the month and continue until rains increased soil moisture conditions by late in the month.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 ARX wrote it up.
Severe drought conditions developed across parts of north central Wisconsin early in the month and continue until rains increased soil moisture conditions by late in the month.
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 La Crosse, WI wrote its last area forecast discussion before the first event at May 31, 1:40 PM CST, 10 hours 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LA CROSSE WI 240 PM CDT MON MAY 31 2010 .SHORT TERM...TONIGHT THROUGH THURSDAY FORECAST FOCUS IS ON THE STORM CHANCES FOR TUES/TUES NIGHT...WITH THE POTENTIAL FOR SEVERE WEATHER. SOMEWHAT COMPLEX SCENARIO FOR TUESDAY/TUESDAY NIGHT AS THERE WILL BE SEVERAL POTENTIAL FOCUSES FOR PCPN DURING THE PERIOD. WITH THE UPPER LEVEL PATTERN STAYING ZONAL...AN UPPER LEVEL TROUGH WILL STAY NORTH...HUGGING SOUTHERN CANADA AS IT MOVES EAST. HOWEVER...ACROSS THE NORTHERN PLAINS TONIGHT...A WEAK RIPPLE IN THAT UPPER LEVEL FLOW WILL INTERACT WITH A BRANCH OF THE LOW LEVEL JET/MOISTURE TRANSPORT...SPARKING AN AREA OF SHOWERS/STORMS. SOME ENHANCEMENT FROM THE STORM GENERATED MCV WITH THE RIPPLE...ALONG WITH DESTABILIZING AIR AHEAD OF IT...SHOULD CONTINUE THIS AREA OF PCPN AS IT MOVES INTO CENTRAL MN AND NORTHERN WI DURING THE AFTERNOON AND EVENING. FARTHER SOUTH...THE 31.12Z GFS AND NAM POINT TO ANOTHER WEAK FEATURE TRAVELING ALONG THE UPPER LEVEL FLOW...WHICH STARTS TO INTERACT WITH A STRONGER PORTION OF THE LOW LEVEL JET/MOISTURE RETURN TUES EVENING...OVER SOUTHERN IA. WOULD EXPECT BLOSSOMING SHOWERS/STORMS BY LATE EVENING...CONTINUING OVERNIGHT. MEANWHILE BETWEEN THESE TWO WEAKER SHORTWAVES...A SFC BOUNDARY ASSOCIATED WITH THE CANADIAN TROUGH WILL STRETCH FROM NORTHEAST WI INTO CENTRAL IA BY TUES EVENING...WITH A RIDGE OF WARM/MOIST THETA-E AIR CENTERED ACROSS THE REGION. THE SFC FRONT WILL WORK ON THIS DESTABILIZING AIR MASS IN THE AFTERNOON/EVENING TO SPARK SHOWERS/STORMS ALONG IT. A MID LEVEL CAP IS INDICATED VIA BUFKIT SOUNDINGS AND 750 MB TEMPS //12C// DURING THE AFTERNOON/EARLY EVENING OVER IOWA/SOUTHERN WI. THIS WOULD LIKELY DETER THE CONVECTIVE THREAT ALONG THE BOUNDARY FROM VENTURING TOO FAR SOUTH INTO NORTHEAST IA UNTIL LATER IN THE DAY. THIS IS EVIDENCED IN THE 12Z SPCWRF...ALONG WITH THE NMM4/ARW4 MESO MODELS. LOOKING AT THE SEVERE WEATHER THREAT...THE NAM IS MORE ROBUST WITH ITS INSTABILITY...DEVELOPING UPWARDS 1500 J/KG OF MLCAPE BY 00Z WED. THE GFS IS GENERALLY ABOUT 1000 J/KG OR LESS. THE DIFFERENCES STEM FROM THE NAM/S MORE MOIST SFC LAYER...WHICH IS ABOUT 5 DEGREES OR SO HIGHER IN DEWPOINTS. BELIEVE THIS IS OVERDONE IN THE NAM...AND FAVOR THE GFS. BOTH MODELS DO AGREE THAT THE BEST INSTABILITY WILL BE WELL SOUTH OF THE LOCAL AREA...ACROSS SOUTHERN IOWA AND PORTIONS OF THE SOUTHERN PLAINS/MO RIVER VALLEY. SOUNDINGS ARE NOT AS SKINNY IN THE INSTABILITY PROFILE FOR TUES AFTERNOON/EVENING AS PREVIOUS DAYS...WITH NCAPES NEARLY 0.15. THIS IS MORE SUPPORTIVE OF UPDRAFTS...AND MAKES LARGER HAIL A BETTER POSSIBILITY. FOR THE STORMS THAT DEVELOP...WIND SHEAR IS FAVORABLE FOR SOME STORM ORGANIZATION...WITH BOTH THE GFS AND NAM POINTING TO 40 KTS IN THE 0-6 KM LAYER. OVERALL...WHILE INSTABILITY DOES NOT LOOK OVERLY HIGH...THERE WOULD APPEAR TO BE ENOUGH THAT WHEN THE WIND SHEAR IS FACTORED IN...SOME SEVERE THUNDERSTORMS COULD BE REALIZED. CONSULT THE LATEST HAZARDOUS WEATHER OUTLOOK AND SPC GUIDANCE FOR MORE INFORMATION ON THE SEVERE POTENTIAL. ON WED...THE FORECAST CONCERN RESTS ON WHERE THE FRONTAL BOUNDARY WILL LAY UP. THE NAM FAVORS SINKING IT SOUTH INTO A WEST-EAST ORIENTATION ACROSS MO/CENTRAL ILL BY 18Z. THE GFS IS A BIT FARTHER NORTH...AS IT THE EC. THERE LOOKS TO BE A BETTER FLOW OF MOISTURE INTO THIS BOUNDARY...WITH STRONGER INSTABILITY POOLING INTO THE BOUNDARY AS A RESULT. SHOWERS AND STORMS WILL CONTINUE TO BE THREAT ALONG AND JUST NORTH OF THE BOUNDARY AS A RESULT. THE 09Z SREF WOULD SEEM TO FAVOR THE NAM A BIT IN PLACEMENT AND RESULTING QPF WITH THE FRONT...BUT THINK A BLEND OF THE MODELS IS A BETTER WAY TO GO FOR THE MOMENT. WILL CONTINUE PCPN CHANCES FOR WED AS RESULT...DECREASING AS YOU MOVE NORTHWARD ACROSS THE FORECAST AREA. AS FOR A SEVERE THREAT WITH THIS ACTIVITY...MUCH DEPENDS ON WHERE THE FRONT LAYS UP. CURRENTLY BELIEVE THIS THREAT WILL STAY SOUTH...BUT IF THE FRONT STICKS FARTHER NORTH...THE POTENTIAL FOR SEVERE WEATHER WILL INCREASE. WED NIGHT AND THU SHOULD BRING IN AN AREA OF HIGH PRESSURE...AND DRIER AND QUIETER CONDITIONS. .LONG TERM...THURSDAY NIGHT THROUGH MONDAY A PARADE OF SHORTWAVE TROUGHS WILL MOVE THROUGH THE ZONAL UPPER LEVEL FLOW THROUGH THE UPCOMING WEEKEND...WITH CONSIDERABLE VARIABILITY WITH WHERE/WHEN THESE RIPPLES TRACK BETWEEN THE GFS AND ECMWF. FORECAST CONFIDENCE IS LOW ON THE DETAILS OF ANY RAIN CHANCES AS A RESULT...ALTHOUGH THE SCENARIOS DO FAVOR AT LEAST A FEW PERIODS OF SHOWERS AND STORMS. WILL CONTINUE TO SIDE TOWARD HPC GUIDANCE FOR PCPN CHANCES. WITH THE ZONAL FLOW...EXPECT TEMPERATURES TO HOLD CLOSER TO THE SEASONABLE NORMALS FOR THE FIRST WEEK OF JUNE. && .AVIATION... A WEAK SHORT WAVE TROUGH WILL BRING A SCATTERED TO OCCASIONALLY BROKEN DECK OF MID AND HIGH CLOUDS TO THE AREA AS IT MOVES EAST ACROSS NORTHERN MINNESOTA AND NORTHERN WISCONSIN TONIGHT. THE GREATEST CONCENTRATION OF CLOUDS WILL BE FOUND NORTH OF INTERSTATE 90. ANOTHER SHORT WAVE TROUGH WILL MOVE ACROSS THE REGION ON TUESDAY AFTERNOON AND NIGHT. THIS SYSTEM WILL HAVE MUCH MORE LOW LEVEL MOISTURE TO WORK WITH...AND IT WILL HAVE TO BE WATCHED FOR THE POTENTIAL OF SEVERE WEATHER. IF THE 31.12Z SPCWRF IS CORRECT...THERE COULD BE A LINE OF THUNDERSTORMS APPROACHING KRST BY 02.00Z. OTHERWISE IT LOOKS DRY THROUGH THE PERIOD. && .ARX WATCHES/WARNINGS/ADVISORIES... WI...NONE. MN...NONE. IA...NONE. && SHORT/LONG TERM... RIECK AVIATION.......... BOYNE
HAZARDOUS WEATHER OUTLOOK...CORRECTED EXPIRATION TIME NATIONAL WEATHER SERVICE LA CROSSE WI 450 AM CDT MON MAY 31 2010 IAZ008>011-018-019-029-030-MNZ079-086>088-094>096-WIZ017-029-032>034- 041>044-053>055-061-011200- ADAMS-ALLAMAKEE-BUFFALO-CHICKASAW-CLARK-CLAYTON-CRAWFORD-DODGE- FAYETTE-FILLMORE-FLOYD-GRANT-HOUSTON-HOWARD-JACKSON-JUNEAU-LA CROSSE- MITCHELL-MONROE-MOWER-OLMSTED-RICHLAND-TAYLOR-TREMPEALEAU-VERNON- WABASHA-WINNESHIEK-WINONA- 450 AM CDT MON MAY 31 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF SOUTHEAST MINNESOTA...NORTHEAST IOWA...AND SOUTHWEST INTO CENTRAL WISCONSIN. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS ARE POSSIBLE TUESDAY AFTERNOON THROUGH THURSDAY MORNING...AND DURING THE UPCOMING WEEKEND. SEVERE WEATHER MAY OCCUR WITH THE STORMS TUESDAY AFTERNOON THROUGH TUESDAY NIGHT...BUT IT REMAINS TOO EARLY TO PROVIDE DETAILS AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TUESDAY AFTERNOON THROUGH TUESDAY NIGHT. .EMERGENCY MANAGEMENT COORDINATION... NO CALL IS SCHEDULED. AJ/BOYNE
The national radar mosaic for the moment the first event began.
2 drought. Local standard time, as filed.
Severe drought conditions developed across the entire county early in the month and continued until late in the month when beneficial rains increased the soil moisture.
Severe drought conditions developed across the far northern parts of the county early in the month and continued until late in the month when beneficial rains increased the soil moisture.
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: 238685, 238686.