A significant severe severe thunderstorm outbreak caused extensive wind damage in northwest Wisconsin, centered around the Hayward area.
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 DLH wrote it up.
A significant severe severe thunderstorm outbreak caused extensive wind damage in northwest Wisconsin, centered around the Hayward area.
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 Duluth, MN wrote its last area forecast discussion before the first event at Jul 14, 6:31 AM CST, 2 hours 17 minutes earlier.
AREA FORECAST DISCUSSION...MESOSCALE UPDATE NATIONAL WEATHER SERVICE DULUTH MN 731 AM CDT WED JUL 14 2010 .MESOSCALE UPDATE...CONCERNING SEVERE THUNDERSTORMS MOVING INTO CENTRAL MINNESOTA... VOLUMETRIC RADAR DATA FROM KDLH/KMVX STRONGLY SUGGESTS THAT COLD POOL AND REAR INFLOW JET ASSOCIATED WITH MCS MOVING INTO CASS/CROW WING COUNTIES HAS BECOME STRONGER AND MUCH MORE ORGANIZED OVER THE PAST 30-45 MINUTES. HYBRID HP SUPERCELL/BOW ECHO STRUCTURE AND 50+ MPH FORWARD PROPAGATION SPEED STRONGLY SUGGESTS POTENTIAL FOR EXTREME SURFACE WINDS WHERE COLD POOL AND HP SUPERCELL RFD STRUCTURES CAN INTERACT..AND SURFACE REPORTS FROM WADENA COUNTY SEEM TO CONFIRM INCREASING WIND THREAT WITH A COUPLE REPORTS OF 55-65 MPH WINDS IN THE PAST FEW MINUTES PER MNDOT OBS SITES. POTENTIALLY VERY DANGEROUS SITUATION DEVELOPING FOR BRAINERD LAKES REGION TO LAKE MILLE LACS WITH POSSIBILITY OF 80+ MPH SURFACE WINDS PERHAPS ACCOMPANIED BY QUARTER SIZE HAIL THRU 9 AM. THREAT MAY EXTEND AS FAR EAST AS I35 CORRIDOR BY 10 AM. MILLER && .DLH WATCHES/WARNINGS/ADVISORIES... MN...NONE. WI...NONE. LS...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DULUTH MN 412 AM CDT WED JUL 14 2010 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-151030- KOOCHICHING-NORTHERN ST. LOUIS-NORTHERN COOK/NORTHERN LAKE- NORTHERN ITASCA-CENTRAL ST. LOUIS-SOUTHERN LAKE/LAKESHORE- SOUTHERN COOK/LAKESHORE-NORTHERN CASS-SOUTHERN ITASCA- SOUTHERN CASS-CROW WING-NORTHERN AITKIN-SOUTHERN AITKIN- CARLTON/SOUTHERN ST. LOUIS-PINE-DOUGLAS-BAYFIELD-ASHLAND-IRON- BURNETT-WASHBURN-SAWYER-PRICE- 412 AM CDT WED JUL 14 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. .DAY ONE...TODAY AND TONIGHT STRONG TO SEVERE THUNDERSTORMS ARE EXPECTED TODAY ACROSS MOST OF THE NORTHLAND. A SIGNIFICANT SEVERE WEATHER THREAT IS EXPECTED TO DEVELOP FROM LATE THIS MORNING INTO THIS EVENING AS A STRONG DISTURBANCE AND COLD FRONT MOVE RAPIDLY INTO MINNESOTA FROM THE WEST. SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP AND MOVE EASTWARD DURING THE DAY... AFFECTING A LARGE PART OF CENTRAL AND EASTERN MINNESOTA AND ALL OF NORTHWEST WISCONSIN. VERY LARGE HAIL... DAMAGING WINDS AND TORNADOES WILL BE POSSIBLE. THE GREATEST RISK OF TORNADOES APPEARS TO BE DURING THE AFTERNOON AND EARLY EVENING HOURS ACROSS EAST CENTRAL MINNESOTA AND NORTHWEST WISCONSIN... FROM PINE CITY AND MOOSE LAKE... EASTWARD TO HAYWARD... SPOONER AND PARK FALLS. PEOPLE ARE STRONGLY ENCOURAGED TO STAY CURRENT WITH THE LATEST WEATHER INFORMATION TODAY AND TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS ANOTHER CHANCE OF THUNDERSTORMS FROM SATURDAY THROUGH MONDAY. WHILE IT IS TOO EARLY TO ASCERTAIN DETAILS FOR THE WEEKEND AT THIS TIME... THERE APPEARS TO BE AT LEAST A SMALL CHANCE THAT A FEW STORMS MAY BE SEVERE DURING THE SATURDAY INTO MONDAY TIME PERIOD. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT. LSZ121-140>148-151030- BAYFIELD TO OAK POINT WI-GRAND PORTAGE TO GRAND MARAIS MN- GRAND MARAIS TO TACONITE HARBOR MN- TACONITE HARBOR TO SILVER BAY HARBOR MN- SILVER BAY HARBOR TO TWO HARBORS MN-TWO HARBORS TO DULUTH MN- DULUTH MN TO PORT WING WI-PORT WING TO SAND ISLAND WI- SAND ISLAND TO BAYFIELD WI-OAK POINT TO SAXON HARBOR WI- 412 AM CDT WED JUL 14 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF WESTERN LAKE SUPERIOR. .DAY ONE...TODAY AND TONIGHT STRONG TO POSSIBLY SEVERE THUNDERSTORMS PRODUCING LARGE HAIL... STRONG WINDS... FREQUENT LIGHTNING AND LOCALLY HIGHER WAVES WILL LIKELY AFFECT WESTERN LAKE SUPERIOR TODAY AND TONIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS ANOTHER CHANCE FOR THUNDERSTORMS SATURDAY INTO MONDAY. CANNON MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB ADDRESS: HTTP://WWW.WEATHER.GOV/DULUTH (ALL LOWER CASE)
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
713 AM CDT WED JUL 14 2010
MNZ010-011-018-019-141230-
CENTRAL ST. LOUIS-KOOCHICHING-NORTH ITASCA-NORTH ST. LOUIS-
713 AM CDT WED JUL 14 2010
...STRONG THUNDERSTORMS AND TORRENTIAL RAINFALL OVER NORTHERN
MINNESOTA...
AT 711 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LARGE CLUSTER OF STRONG THUNDERSTORMS BETWEEN GRAND RAPIDS AND
INTERNATIONAL FALLS...MOVING NORTHEAST AT 35 MPH.
THESE STORMS ARE CAPABLE OF PRODUCING PEA SIZE HAIL...WIND GUSTS UP
TO 40 MPH... AND CONTINUOUS CLOUD TO GROUND LIGHTNING.
IN ADDITION...TORRENTIAL RAINFALL RATES AND RAINFALL AMOUNTS FROM 1
TO 2 INCHES ARE POSSIBLE IN LESS THAN AN HOUR.
LOCATIONS IMPACTED INCLUDE...
BUCK LAKE... COON LAKE... CRAIGVILLE...
BEAR LAKE... BIG FALLS...
STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN
A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.
LAT...LON 4863 9313 4863 9294 4855 9275 4855 9268
4846 9269 4845 9267 4757 9263 4746 9429
4830 9442 4862 9381 4852 9379 4855 9349
4861 9345 4865 9328
MILLERSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
738 AM CDT WED JUL 14 2010
MNZ019-026-035>038-141305-
CARLTON/SOUTH ST. LOUIS-CENTRAL ST. LOUIS-NORTHERN AITKIN-PINE-SOUTH
AITKIN-SOUTH ITASCA-
738 AM CDT WED JUL 14 2010
...SEVERE THUNDERSTORMS APPROACHING THE AREA...
AT 733 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE STRAIGHT LINE
WINDS...ALONG A LINE EXTENDING FROM 54 MILES WEST OF SISEEBAKWET
LAKE TO 34 MILES WEST OF PINE KNOLL TO 60 MILES WEST OF MILLE LACS
LAKE...MOVING EAST AT 60 MPH.
AT 712 AM...WADENA MEASURED A 72 MPH WIND GUST. THESE STORMS WILL BE
CAPABLE OF PRODUCING DESTRUCTIVE WINDS UP TO 80 MPH...QUARTER SIZE
HAIL...AND CONTINUOUS CLOUD TO GROUND LIGHTNING.
* THE SEVERE THUNDERSTORMS MAY BE NEAR...
PINE KNOLL BY 805 AM...
AITKIN BY 810 AM...
WALDECK AND ROSSBURG BY 815 AM...
WEALTHWOOD AND WAUKENABO BY 820 AM...
MALMO AND HILL CITY BY 825 AM...
POKEGAMA DAM AND COHASSET BY 830 AM...
GUNN AND LA PRAIRIE BY 835 AM...
THESE ARE VERY DANGEROUS THUNDERSTORMS! PAY ATTENTION TO THE LATEST
FORECASTS AND BE READY TO SEEK SHELTER IF WARNINGS ARE ISSUED LATER
THIS MORNING.
LAT...LON 4573 9313 4574 9315 4598 9314 4599 9307
4615 9306 4615 9343 4624 9345 4623 9376
4624 9378 4729 9376 4739 9241 4657 9234
4572 9286
LAMERSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
812 AM CDT WED JUL 14 2010
MNZ019-020-037-038-WIZ001-006-141400-
BURNETT-CARLTON/SOUTH ST. LOUIS-CENTRAL ST.
LOUIS-DOUGLAS-PINE-SOUTHERN LAKE/NORTH SHORE-
812 AM CDT WED JUL 14 2010
...SEVERE THUNDERSTORMS APPROACHING THE INTERSTATE 35 CORRIDOR...
AT 809 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 43 MILES WEST OF
SILICA TO 31 MILES WEST OF WRIGHT TO 50 MILES WEST OF HINCKLEY...
MOVING EAST AT 50 MPH.
THESE STORMS HAVE A HISTORY OF PRODUCING DAMAGING WIND GUSTS BETWEEN
60 AND 75 MPH. THE THREAT OF HIGH WINDS WILL CONTINUE EAST INTO THE
INTERSTATE 35 CORRIDOR BY MID MORNING. THE STORMS WILL ALSO BE
CAPABLE OF PRODUCING DANGEROUS...CONTINUOUS CLOUD TO GROUND
LIGHTNING AND TORRENTIAL DOWNPOURS.
* THUNDERSTORMS WILL BE NEAR...
WRIGHT BY 840 AM...
ISLAND AND CROMWELL BY 850 AM...
WILLOW RIVER AND RUTLEDGE BY 900 AM...
PROSIT AND NEMADJI BY 910 AM...
DULUTH AND SUPERIOR BY 930 AM...
BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS THIS MORNING. THESE
THUNDERSTORMS ARE MOVING VERY FAST AND SKIES MAY DARKEN ONLY MINUTES
BEFORE THE STORMS HIT. IF A WARNING IS ISSUED...SEEK SHELTER
IMMEDIATELY IN A STURDY STRUCTURE.
LAT...LON 4593 9304 4730 9304 4742 9186 4691 9180
4682 9203 4675 9208 4669 9195 4670 9179
4668 9178 4591 9217
LAMERSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
828 AM CDT WED JUL 14 2010
MNZ010-011-018-019-025-141430-
CENTRAL ST. LOUIS-KOOCHICHING-NORTH CASS-NORTH ITASCA-NORTH ST.
LOUIS-
828 AM CDT WED JUL 14 2010
...TORRENTIAL RAIN FOLLOWED BY GUSTY NORTHEAST WINDS...
AT 820 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
WIDESPREAD HEAVY RAIN WITH EMBEDDED THUNDERSTORMS STRETCHING FROM
ITASCA AND KOOCHICHING COUNTIES EASTWARD TO THE HIGHWAY 53 CORRIDOR
IN NORTHERN ST. LOUIS COUNTY. THE HEAVY RAIN AND STORMS WILL
CONTINUE TO MOVE OVER THE SAME AREAS FOR THE NEXT COUPLE HOURS.
HOURLY RAINFALL RATES WILL GENERALLY BE BETWEEN ONE HALF INCH AND
ONE INCH...ALTHOUGH ISOLATED AREAS OF UP TO 2 INCHES WILL BE
POSSIBLE. THIS MAY CAUSE CULVERTS AND LOW LYING AREAS TO FILL UP
WITH WATER...AND SOME PONDING OF WATER ON AREA ROADS.
BEHIND THE AREA OF RAIN...WINDS MAY SHIFT IN RESPONSE TO A LOCALIZED
AREA OF LOW PRESSURE TRAILING THE PRECIPITATION. THE WINDS WOULD
SHIFT TO A MORE NORTHEASTERLY DIRECTION AND GUST POSSIBLY UP TO 40
TO 45 MPH. AT 713 AM...PARK RAPIDS RECORDED A PEAK WIND GUST OF 44
MPH WITH THESE PRESSURE GRADIENT WINDS.
LAT...LON 4864 9385 4852 9379 4863 9294 4854 9262
4846 9269 4843 9247 4824 9236 4836 9229
4838 9206 4822 9182 4779 9182 4745 9314
4746 9406 4729 9392 4730 9378 4703 9467
4741 9468 4745 9442 4873 9442
LAMERSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
914 AM CDT WED JUL 14 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0902 AM TSTM WND DMG 2 S CROMWELL 46.65N 92.87W
07/14/2010 CARLTON MN LAW ENFORCEMENT
TREES BLOWN DOWN ACROSS HIGHWAY 73 SOUTH OF CROMWELL.
&&
LAMERSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
942 AM CDT WED JUL 14 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0925 AM TSTM WND DMG SCANLON 46.71N 92.43W
07/14/2010 CARLTON MN AMATEUR RADIO
TREES DOWN IN SCANLON. NEAR 22ND STREET AND DODRIDGE.
&&
LAMERSThe Duluth radar (KDLH), 117 km away, was scanning. The volume nearest the first event began at 14:48 UTC.
18 thunderstorm wind, 1 flash flood. Local standard time, as filed.
Trees were blown down. In addition, 1.19 inches of rain was measured in an hour's time.
A large healthy oak tree was blown down. In addition, 1.4 inches of rain fell in 30 minutes.
Trees were blown down county-wide.
A 10-inch diameter healthy oak tree was blown down.
Widespread damage to trees either snapped or uprooted centered around the Minong and Chicog areas.
Many trees were blown down across the county, especially in the Trego area and north side of Spooner.
A roof of a home and a garage were destroyed. Many trees were blown down in Lenroot and Hayward Townships.
A small outbuilding was shifted off its foundation.
Trees were blown down.
There was minor damage to the hangars and hangar roofs at the Hayward Airport. The power was out for 3 hours according to the airport manager.
Trees were blown down.
Trees were blown down near Pike Lake in the Chequamegon National Forest.
Trees and power lines were blown down.
Trees were blown down along Price County Highway W. Trees also brought down some power lines.
Power lines were reported down along U.S. Highway 13.
Large tree branches were blown down.
Trees were blown down.
Trees were reported downed county-wide.
Widespread street flooding with water covering roadways occurred across mainly northern Price County, centered around the Fifield and Park Falls area.
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, July 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: 250544, 250549, 250547, 250546, 250558, 250551, 250556, 250562, 250548, 250555, 250552, 250554, 250557, 250559, 250563, 250561, 250564, 250565, 250543.