Severe Storms- April 10, 2011

Severe Storms Strike Parts of Northeast and Extreme Southeast Minnesota: April 10, 2011

The first severe thunderstorm outbreak of the season for Minnesota hit during the day on Sunday, April 10. A low pressure area centered over Sioux Falls during the early morning hours of April 10 moved to Duluth by evening. Warm muggy air surged northward out ahead of a cold front that marched to the east across the state. The air felt downright tropical during the midday hours on April 10 over central and southern Minnesota as temperatures surged into the mid 70's and dew point temperatures were in the low to mid 60's.

Strong thunderstorms developed by late morning and turned severe over parts of northeast Minnesota, with severe thunderstorms developing during the late afternoon and evening hours over far southeast Minnesota and western Wisconsin. In Northeastern Minnesota, large hail was reported in parts of Itasca, Cook, and St. Louis Counties. In southeast Minnesota, a barn was blown down and a mobile home was knocked off its foundation north of Caledonia due to straight-line severe thunderstorm winds. Baseball-sized hail was reported at Hokah with enough hail to cover the ground. The Minnesota storms were only part of a larger severe storm outbreak over the midwest.

Some unwelcomed heavy rain fell as well with the storms over parts of Northwest Minnesota with just over 2 inches reported at a volunteer rain gage monitoring site in central Clearwater County.

Behind the cold front chilly air rushed in the state and temperatures dropped by 25 degrees over the course of five hours during the evening in the Twin Cities from the mid 70's to the low 50's.

National Weather Service Storm Summaries


Listed below are Public Information Statements and Storm Summaries from the National Weather Service.


PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1048 AM CDT MON APR 11 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0403 PM     HAIL             4 N HARMONY             43.61N 92.01W
04/10/2011  E0.50 INCH       FILLMORE           MN   LAW ENFORCEMENT

0415 PM     TSTM WND DMG     4 E CANTON              43.53N 91.85W
04/10/2011                   FILLMORE           MN   LAW ENFORCEMENT

            BARN DOWN AND 1 TREE DOWN ON ROAD

0510 PM     TSTM WND DMG     1 N GENOA               43.59N 91.23W
04/10/2011                   VERNON             WI   LAW ENFORCEMENT

            POWERLINES DOWN ON MOUND RIDGE RD

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE DULUTH MN
305 PM CDT SUN APR 10 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1124 AM     HAIL             7 W BOWSTRING           47.54N 93.95W
04/10/2011  M0.75 INCH       ITASCA             MN   TRAINED SPOTTER

            ON CO ROAD 35 5 MILES EAST OF INGER. LOTS OF PENNY SIZED
            HAIL

1135 AM     HAIL             MARCELL                 47.59N 93.69W
04/10/2011  M1.75 INCH       ITASCA             MN   PUBLIC

            ONGOING. NEIGHBORS CAR WINDOW BROKEN DUE TO HAIL.

1235 PM     TSTM WND DMG     12 W COOK               47.85N 92.95W
04/10/2011                   ST. LOUIS          MN   PUBLIC

            WITNESSED GARAGE ROOF LIFT INTO AIR AND FALL BACK ONTO
            WALLS. SOME DAMAGE TO GARAGE WALLS. BOAT HOUSE OF UNKNOWN
            CONSTRUCTION DESTROYED. TREE DAMAGE.

1244 PM     HAIL             GHEEN                   47.97N 92.81W
04/10/2011  M0.75 INCH       ST. LOUIS          MN   TRAINED SPOTTER

            DIME SIZE HAIL COVERING THE GROUND

1247 PM     TSTM WND DMG     COOK                    47.85N 92.69W
04/10/2011                   ST. LOUIS          MN   TRAINED SPOTTER

            TREES AND POWERLINES DOWN IN COOK AREA.

0205 PM     HAIL             10 WNW GUNFLINT LAKE    48.15N 90.90W
04/10/2011  E0.75 INCH       COOK               MN   PUBLIC

            PEA TO PENNY SIZE HAIL WITH GUSTY WINDS. NO DAMAGE
            REPORTED. NEAR SEAGULL LAKE.





PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LA CROSSE WI
851 PM CDT SUN APR 10 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0340 PM     HAIL             ELMA                    43.25N 92.44W
04/10/2011  M0.75 INCH       HOWARD             IA   EMERGENCY MNGR

            40-50 MPH ESTIMATED WIND ALSO

0350 PM     HAIL             NELSON                  44.42N 92.00W
04/10/2011  M1.00 INCH       BUFFALO            WI   TRAINED SPOTTER

0400 PM     HAIL             7 W HARMONY             43.56N 92.15W
04/10/2011  M0.75 INCH       FILLMORE           MN   EMERGENCY MNGR

            ALSO REPORTED 40 MPH WINDS

0411 PM     TSTM WND DMG     2 N BURR OAK            43.48N 91.88W
04/10/2011                   WINNESHIEK         IA   LAW ENFORCEMENT

            SOME TREES AND POWER LINES DOWN AND BUILDING DAMAGE

0420 PM     TSTM WND DMG     2 SW CANTON             43.51N 91.96W
04/10/2011                   FILLMORE           MN   TRAINED SPOTTER

            2 FOOT DIAMETER TREE DOWN BLOCKING THE ROAD.

0424 PM     HAIL             NELSON                  44.42N 92.00W
04/10/2011  E0.88 INCH       BUFFALO            WI   FIRE DEPT/RESCUE

            ALSO SEEING OCCASIONAL WALL CLOUD WITH SOME SLIGHT
            LOWERING. NO ROTATION AT THIS TIME.

0427 PM     HAIL             HOUSTON                 43.76N 91.57W
04/10/2011  M1.75 INCH       HOUSTON            MN   EMERGENCY MNGR

0430 PM     TSTM WND DMG     5 N CALEDONIA           43.71N 91.50W
04/10/2011                   HOUSTON            MN   EMERGENCY MNGR

            MOBILE HOME KNOCKED OFF FOUNDATION

0432 PM     TSTM WND DMG     CALEDONIA               43.63N 91.50W
04/10/2011                   HOUSTON            MN   EMERGENCY MNGR

            BARN DOWN JUST OUTSIDE CALEDONIA

0432 PM     HAIL             GOODVIEW                44.07N 91.71W
04/10/2011  E1.00 INCH       WINONA             MN   TRAINED SPOTTER

0434 PM     TSTM WND DMG     8 N CALEDONIA           43.75N 91.50W
04/10/2011                   HOUSTON            MN   EMERGENCY MNGR

            NUMEROUS TREES AND POWER LINES DOWN ALONG HWY 76

0435 PM     HAIL             5 E FOUNTAIN CITY       44.12N 91.60W
04/10/2011  E1.25 INCH       BUFFALO            WI   TRAINED SPOTTER

0437 PM     HAIL             ARCADIA                 44.25N 91.49W
04/10/2011  E0.75 INCH       TREMPEALEAU        WI   LAW ENFORCEMENT

0438 PM     TSTM WND DMG     BLACK HAMMER            43.61N 91.67W
04/10/2011                   HOUSTON            MN   LAW ENFORCEMENT

            SEVERAL TREES DOWN ALONG COUNTY ROAD 19. POSSIBLE TORNADO
            TOUCHDOWN. DEPUTY ON THE WAY TO INVESTIGATE.

0442 PM     HAIL             2 E HOKAH               43.76N 91.31W
04/10/2011  M2.75 INCH       HOUSTON            MN   EMERGENCY MNGR

0442 PM     HAIL             ARCADIA                 44.25N 91.49W
04/10/2011  E1.25 INCH       TREMPEALEAU        WI   TRAINED SPOTTER

0442 PM     HAIL             HOKAH                   43.76N 91.35W
04/10/2011  E3.00 INCH       HOUSTON            MN   TRAINED SPOTTER

            HAIL COVERING THE GROUND WITH SOME TREES DOWN.

0444 PM     HAIL             1 S HOKAH               43.75N 91.35W
04/10/2011  M1.00 INCH       HOUSTON            MN   CO-OP OBSERVER

            ALSO 0.50 INCHES OF RAIN IN LESS THAN 5 MINUTES AND VERY
            STRONG WINDS. POWER WENT OUT.

0445 PM     HAIL             3 NW BROWNSVILLE        43.73N 91.32W
04/10/2011  E1.75 INCH       HOUSTON            MN   TRAINED SPOTTER

0445 PM     TSTM WND DMG     5 N CALEDONIA           43.71N 91.50W
04/10/2011                   HOUSTON            MN   LAW ENFORCEMENT

            BARN DOWN AND TRAILER BLOWN OFF ITS FOUNDATION.

0451 PM     HAIL             2 S LA CROSSE           43.80N 91.23W
04/10/2011  E1.50 INCH       LA CROSSE          WI   AMATEUR RADIO

            HALF DOLLAR SIZE HAIL

0451 PM     TSTM WND GST     2 S LA CROSSE           43.80N 91.23W
04/10/2011  E60.00 MPH       LA CROSSE          WI   AMATEUR RADIO

0452 PM     HAIL             2 S LA CROSSE           43.80N 91.23W
04/10/2011  E1.00 INCH       LA CROSSE          WI   LAW ENFORCEMENT

            ON WARD AVENUE IN SOUTH LA CROSSE

0453 PM     HAIL             3 SE LA CROSSE          43.80N 91.19W
04/10/2011  E2.50 INCH       LA CROSSE          WI   AMATEUR RADIO

            AT SOUTHERN BLUFFS SCHOOL

0453 PM     HAIL             2 S LA CROSSE           43.80N 91.23W
04/10/2011  E2.00 INCH       LA CROSSE          WI   PUBLIC

            EXTENSIVE HAIL DAMAGE ON THE SOUTH SIDE OF LA CROSSE NEAR
            WAL MART. WINDOWS BROKEN AND SIDING DAMAGED TO AN
            ESTIMATED 10 TO 15 HOMES. SEVERAL VEHICLES ALSO DAMAGED
            WITH DENTS AND BROKEN WINDOWS AND MIRRORS.

0454 PM     HAIL             5 S OSSEO               44.51N 91.22W
04/10/2011  E1.75 INCH       TREMPEALEAU        WI   TRAINED SPOTTER

0454 PM     HAIL             3 E LA CROSSE           43.83N 91.17W
04/10/2011  E1.75 INCH       LA CROSSE          WI   NWS EMPLOYEE

            AT NWS OFFICE

0454 PM     HAIL             2 S LA CROSSE           43.80N 91.23W
04/10/2011  E2.00 INCH       LA CROSSE          WI   AMATEUR RADIO

            SOUTH SIDE

0455 PM     HAIL             3 E LA CROSSE           43.83N 91.17W
04/10/2011  M1.75 INCH       LA CROSSE          WI   LAW ENFORCEMENT

            AT HWY 14 AND CTH MM

0456 PM     TSTM WND GST     1 E LA CROSSE           43.83N 91.21W
04/10/2011  M52.00 MPH       LA CROSSE          WI   NWS EMPLOYEE

            AT NWS OFFICE

0459 PM     HAIL             WEST SALEM              43.90N 91.08W
04/10/2011  M1.00 INCH       LA CROSSE          WI   NWS EMPLOYEE

            ALSO 40 MPH WIND

0500 PM     TSTM WND DMG     OSSEO                   44.58N 91.22W
04/10/2011                   TREMPEALEAU        WI   TRAINED SPOTTER

            LOTS OF WINDOWS BROKEN AND CARS DENTED FROM WHAT APPEARS
            TO BE WIND BLOWN DEBRIS.

0516 PM     HAIL             1 S SPARTA              43.93N 90.81W
04/10/2011  M1.00 INCH       MONROE             WI   LAW ENFORCEMENT

            AT I-90 EXIT 25

0525 PM     HAIL             7 E SPARTA              43.94N 90.67W
04/10/2011  M1.75 INCH       MONROE             WI   LAW ENFORCEMENT

            AT HWY 16 AND CTH A

0530 PM     HAIL             MEDFORD                 45.14N 90.35W
04/10/2011  E1.00 INCH       TAYLOR             WI   PUBLIC

0530 PM     HAIL             1 N TOMAH               44.00N 90.50W
04/10/2011  M1.25 INCH       MONROE             WI   TRAINED SPOTTER

0532 PM     HAIL             TUNNEL CITY             44.00N 90.57W
04/10/2011  M0.50 INCH       MONROE             WI   TRAINED SPOTTER

0536 PM     FUNNEL CLOUD     3 SW OAKDALE            43.93N 90.42W
04/10/2011                   MONROE             WI   LAW ENFORCEMENT

            POSSIBLE FUNNEL REPORTED BY PUBLIC

0538 PM     HAIL             WARRENS                 44.13N 90.50W
04/10/2011  E1.00 INCH       MONROE             WI   AMATEUR RADIO

0538 PM     HAIL             2 W TOMAH               43.99N 90.54W
04/10/2011  M0.75 INCH       MONROE             WI   TRAINED SPOTTER

0539 PM     HAIL             3 W WITHEE              44.95N 90.66W
04/10/2011  M0.25 INCH       CLARK              WI   LAW ENFORCEMENT

0542 PM     HAIL             4 SW STETSONVILLE       45.04N 90.37W
04/10/2011  E1.00 INCH       TAYLOR             WI   LAW ENFORCEMENT

0608 PM     TSTM WND DMG     3 SE NECEDAH            43.99N 90.03W
04/10/2011                   JUNEAU             WI   LAW ENFORCEMENT

            8 TO 10 INCH PINE TREES UPROOTED AND A GARAGE DOWN. WINDS
            ESTIMATED 60 MPH.

0610 PM     TSTM WND GST     VOLK FIELD              43.93N 90.27W
04/10/2011  M56.00 MPH       JUNEAU             WI   ASOS

0610 PM     TORNADO          1 NW ARKDALE            44.04N 89.90W
04/10/2011                   ADAMS              WI   PUBLIC

            POSSIBLE TORNADO REPORTED BY PUBLIC. CONSIDERABLE TREE
            DAMAGE.

0610 PM     TSTM WND DMG     NECEDAH                 44.02N 90.07W
04/10/2011                   JUNEAU             WI   LAW ENFORCEMENT

            FUNNEL CLOUD WITH TREES DOWN.

0618 PM     HAIL             3 SE NECEDAH            43.99N 90.03W
04/10/2011  M1.25 INCH       JUNEAU             WI   AMATEUR RADIO

0618 PM     HAIL             1 E NECEDAH             44.02N 90.05W
04/10/2011  M1.25 INCH       JUNEAU             WI   AMATEUR RADIO

0623 PM     HAIL             BIG FLATS               44.12N 89.80W
04/10/2011  E1.00 INCH       ADAMS              WI   TRAINED SPOTTER

0625 PM     TSTM WND DMG     COTTONVILLE             44.06N 89.81W
04/10/2011                   ADAMS              WI   TRAINED SPOTTER

            TREES DOWN.

0630 PM     HAIL             NEW ROME                44.24N 89.88W
04/10/2011  E0.75 INCH       ADAMS              WI   TRAINED SPOTTER

0630 PM     TORNADO          COTTONVILLE             44.06N 89.81W
04/10/2011                   ADAMS              WI   AMATEUR RADIO

            REPORTED BY SPOTTER

0725 PM     HAIL             2 S FRIENDSHIP          43.95N 89.82W
04/10/2011  M0.88 INCH       ADAMS              WI   TRAINED SPOTTER

            DIME HAIL IN ADAMS

0727 PM     HAIL             ADAMS                   43.96N 89.82W
04/10/2011  E0.75 INCH       ADAMS              WI   TRAINED SPOTTER