National Weather Service Weather Forecast Office

Severe weather rolled through parts of southern Wisconsin during the late afternoon and early evening of Monday, July 27.  A low pressure system and associated cold front tracked toward the area, setting off scattered showers and thunderstorms.  Numerous reports of severe weather were gathered, ranging from large hail, to damaging winds, to flash flooding, and even a couple of tornadoes.

Below is an animation showing the storm total precipitation from 3 pm through about 9 pm.  The light green area shows rainfall over an inch and the yellow area shows 2 to 3 inches.

Damage surveys will be conducted across Marquette county, Iowa and Lafayette county, and possibly Dodge and Fond du Lac counties on Tuesday morning.  Additional details will be known by late Tuesday afternoon.  Check out the reflectivity loop below that recaps the entire event!

Below is a summary of local storm reports we received Monday.

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
828 PM CDT MON JUL 27 2009

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

0501 PM     HAIL             4 W WESTFIELD           43.88N 89.57W
07/27/2009  E0.50 INCH       MARQUETTE          WI   TRAINED SPOTTER

0506 PM     TSTM WND DMG     WESTFIELD               43.88N 89.49W
07/27/2009                   MARQUETTE          WI   LAW ENFORCEMENT

            SOME TREE DAMAGE

0540 PM     TSTM WND DMG     MONTELLO                43.79N 89.33W
07/27/2009                   MARQUETTE          WI   LAW ENFORCEMENT

            SOME TREE DAMAGE...ALONG WITH PEA SIZE HAIL

0553 PM     TSTM WND GST     1 SE GLEN OAK           43.73N 89.35W
07/27/2009  E50.00 MPH       MARQUETTE          WI   LAW ENFORCEMENT

0605 PM     FUNNEL CLOUD     1 SE DALTON             43.65N 89.19W
07/27/2009                   GREEN LAKE         WI   TRAINED SPOTTER

            DELAYED REPORT OF FUNNEL CLOUD...SPOTTER WAS LOOKING
            WEST-NORTHWEST

0610 PM     HAIL             DALTON                  43.66N 89.21W
07/27/2009  E1.00 INCH       GREEN LAKE         WI   TRAINED SPOTTER

            ALONG WITH 50MPH WINDS...ROTATION...AND RAPID WIND SHIFT

0617 PM     TSTM WND GST     DALTON                  43.66N 89.21W
07/27/2009  E60.00 MPH       GREEN LAKE         WI   EMERGENCY MNGR

            SOME TREES DOWN...HAIL COVERING THE GROUND

0617 PM     TSTM WND DMG     5 SSE GLEN OAK          43.68N 89.32W
07/27/2009                   MARQUETTE          WI   EMERGENCY MNGR

            STRUCTURAL DAMAGE JUST NORTHWEST OF DALTON NEAR GOLDEN
            ROAD AND LOVERS LANE. POSSIBLE TORNADO.

0622 PM     TSTM WND GST     DALTON                  43.66N 89.21W
07/27/2009  E60.00 MPH       GREEN LAKE         WI   LAW ENFORCEMENT

            ESTIMATED 60 MPH GUST IN DALTON.

0625 PM     FUNNEL CLOUD     4 S AVOCA               43.13N 90.33W
07/27/2009                   IOWA               WI   TRAINED SPOTTER

            4 MILES SOUTH OF HWY 133

0644 PM     HAIL             CAMBRIA                 43.54N 89.11W
07/27/2009  E0.88 INCH       COLUMBIA           WI   TRAINED SPOTTER

0655 PM     HAIL             CAMBRIA                 43.54N 89.11W
07/27/2009  E1.00 INCH       COLUMBIA           WI   LAW ENFORCEMENT

            QUARTER SIZE HAIL FROM CAMBRIA UP TO HWY 33

0659 PM     HAIL             LINDEN                  42.92N 90.27W
07/27/2009  E0.50 INCH       IOWA               WI   FIRE DEPT/RESCUE

0755 PM     TSTM WND GST     3 NW MINERAL POINT      42.89N 90.22W
07/27/2009  M40.00 MPH       IOWA               WI   AWOS

            KMRJ GUST TO 35 KNOTS

0800 PM     TSTM WND GST     MINERAL POINT           42.86N 90.18W
07/27/2009  M48.00 MPH       IOWA               WI   MESONET

0800 PM     HEAVY RAIN       3 NW MINERAL POINT      42.89N 90.22W
07/27/2009  M1.21 INCH       IOWA               WI   AWOS

            ONE HOUR RAINFALL

0812 PM     TSTM WND GST     BENTON                  42.57N 90.38W
07/27/2009  E50.00 MPH       LAFAYETTE          WI   TRAINED SPOTTER

            ESTIMATED 40-50 MPH...LOTS OF PEA SIZE HAIL.

0740 PM     HEAVY RAIN       DODGEVILLE              42.96N 90.13W
07/27/2009  E2.50 INCH       IOWA               WI   LAW ENFORCEMENT

            ESTIMATED 2-3 INCHES OF RAINFALL. MINOR STREET FLOODING
            ON SPRING STREET AND INTERSECTION OF HWY 23 AND HWY 18. 1
            TO 2 FEET OF WATER IN LOW SPOTS OF ROADS.