Severe Weather of July 27, 2009

During the afternoon of July 27th (Monday), a low pressure system moved southeast through the area.  Party sunny skies ahead of this system allowed temperatures to climb into lower and mid 80s.  This allowed enough instability for thunderstorms to develop.  In addition, the low pressure system made  the winds aloft favorable for a few of these thunderstorms to become severe across the southern half of Wisconsin.  The primary severe weather reports were large hail and damaging winds.  In addition, there were a couple reports of possible tornadoes.  The La Crosse National Weather Service will be investigating these possible touch downs on Tuesday. 

The map below shows the preliminary storm reports that the La Crosse National Weather Service received between 2:00 PM and 7:00 PM CDT on Monday, July 27th.  Hail reports are indicated by yellow the circles, wind reports are indicated by cyan circles, and possible tornadoes are indicated by red circles. 

July 27th Preliminary Storm Reports from 2:00 PM through 6:30 PM CDT

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LA CROSSE WI
116 PM CDT TUE JUL 28 2009

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

0200 PM HEAVY RAIN 3 WSW ALMA CENTER 44.42N 90.97W
07/27/2009 M1.50 INCH JACKSON WI PUBLIC

0214 PM TSTM WND GST 3 N BLACK RIVER FALLS 44.34N 90.85W
07/27/2009 E30.00 MPH JACKSON WI AMATEUR RADIO

RAIN BLOWING SIDEWAYS WITH LEAVES IN THE AIR

0218 PM TSTM WND DMG 5 NNE BLACK RIVER FALLS 44.37N 90.81W
07/27/2009 JACKSON WI LAW ENFORCEMENT

SHERIFF DEPT REPORTS 25 TO 30 TREES DOWN ALONG HIGHWAY 12
AND COUNTY ROADS K AND E

0223 PM HAIL 2 NE BLACK RIVER FALLS 44.32N 90.82W
07/27/2009 E0.50 INCH JACKSON WI PUBLIC

0230 PM HEAVY RAIN WHITEHALL 44.37N 91.31W
07/27/2009 E1.50 INCH TREMPEALEAU WI PUBLIC

ALSO 0.5 INCH HAIL

0234 PM TSTM WND GST 7 ESE BLACK RIVER FALLS 44.26N 90.72W
07/27/2009 E45.00 MPH JACKSON WI AMATEUR RADIO

NO HAIL REPORTED

0257 PM TSTM WND GST 4 NE MILLSTON 44.24N 90.59W
07/27/2009 E50.00 MPH JACKSON WI PUBLIC

LEAF DEBRIS IN THE AIR AND A LARGE AMOUNT OF PEA SIZED
HAIL.

0317 PM HAIL 7 NW MATHER 44.22N 90.40W
07/27/2009 E0.75 INCH JACKSON WI PUBLIC

WIND GUSTS AROUND 40 MPH

0320 PM HAIL 3 NW MATHER 44.18N 90.34W
07/27/2009 E0.25 INCH JACKSON WI CO-OP OBSERVER

ESTIMATED 1 PERCENT CRANBERRY LOSS

0320 PM TSTM WND DMG 1 E FRANKLIN 44.21N 91.09W
07/27/2009 JACKSON WI LAW ENFORCEMENT

TWO TREES WERE BLOWN DOWN ALONG COUNTY RD C

0325 PM HAIL MELROSE 44.13N 91.00W
07/27/2009 M0.75 INCH JACKSON WI PUBLIC

0325 PM HAIL 1 N MELROSE 44.15N 91.00W
07/27/2009 M1.00 INCH JACKSON WI PUBLIC

0337 PM HAIL 5 NW CATARACT 44.14N 90.90W
07/27/2009 E0.75 INCH MONROE WI AMATEUR RADIO

0408 PM HAIL 2 S SPARTA 43.91N 90.81W
07/27/2009 E0.88 INCH MONROE WI TRAINED SPOTTER

0415 PM HAIL 3 NE SPARTA 43.97N 90.77W
07/27/2009 E1.00 INCH MONROE WI TRAINED SPOTTER

REPORTED FROM ANGELO WITH SOME WIND DAMAGE

0415 PM TSTM WND DMG 4 E SPARTA 43.94N 90.73W
07/27/2009 MONROE WI TRAINED SPOTTER

LOTS OF TREE DAMAGE AT INTERSECTION OF COUNTY ROAD AA AND
A. DAMAGE CONTINUES FOR 2 MILES TO THE EAST AND SOUTHEAST
OF THIS POINT.

0418 PM TSTM WND DMG 6 ESE SPARTA 43.91N 90.70W
07/27/2009 MONROE WI EMERGENCY MNGR

NUMEROUS TREES KNOCKED DOWN NEAR HAVEN AVE AND COUNTY
ROADS A AND AA JUST SOUTH OF HIGHWAY 16. TREES WERE
KNOCKED ON TO POWER LINES AND CARS. ROOFS WERE ALSO BLOWN
OFF OF MOBILE HOMES IN THAT AREA.

0418 PM HAIL 4 E SPARTA 43.94N 90.73W
07/27/2009 E1.00 INCH MONROE WI TRAINED SPOTTER

SOME TREES DOWN IN AREA AS WELL

0420 PM TSTM WND DMG 5 E SPARTA 43.94N 90.71W
07/27/2009 MONROE WI TRAINED SPOTTER

TREES DOWN ALONG HIGHWAY 16 NEAR FORT MCCOY

0422 PM TSTM WND DMG 2 N FRIENDSHIP 44.00N 89.82W
07/27/2009 ADAMS WI LAW ENFORCEMENT

TREES DOWN

0430 PM TSTM WND DMG FRIENDSHIP 43.97N 89.82W
07/27/2009 ADAMS WI LAW ENFORCEMENT

TREE DOWN BLOCKING ROAD JUST SOUTH OF FRIENDSHIP...ALSO
PEA SIZE HAIL

0440 PM HEAVY RAIN LEON 43.88N 90.83W
07/27/2009 M1.60 INCH MONROE WI EMERGENCY MNGR

0445 PM HAIL 1 SW WILTON 43.80N 90.54W
07/27/2009 E0.88 INCH MONROE WI PUBLIC

DIME AND NICKEL HAIL...NOT ENOUGH TO COVER THE GROUND

0445 PM TSTM WND DMG 6 E ADAMS 43.96N 89.70W
07/27/2009 ADAMS WI LAW ENFORCEMENT

TREES REPORTED DOWN IN MANY AREAS EAST AND NORTHEAST OF
ADAMS ALONG WITH SOME PEA SIZE HAIL

0451 PM HAIL 1 S WILTON 43.80N 90.53W
07/27/2009 E0.75 INCH MONROE WI LAW ENFORCEMENT

0453 PM HAIL 1 S WILTON 43.80N 90.53W
07/27/2009 E0.75 INCH MONROE WI PUBLIC

0516 PM TORNADO 4 N MOUNT STERLING 43.37N 90.93W
07/27/2009 F1 CRAWFORD WI LAW ENFORCEMENT

NUMEROUS REPORTS OF TORNADO ON THE GROUND WITH DEBRIS IN
THE AIR AND DAMAGE. NWS SURVEY TEAM CONFIRMED THIS
TORNADO TOUCHED DOWN 1 MILE EAST OF FAIRVIEW AND
DISSIPATED 5 MILES WEST OF SOLDIERS GROVE. IT WAS RANKED
AN EF1 TORNADO. HOWEVER MUCH OF ITS 4 MILE PATH LENGTH
WAS EF0 DAMAGE.

0525 PM TSTM WND DMG 1 N SOLDIERS GROVE 43.41N 90.77W
07/27/2009 CRAWFORD WI LAW ENFORCEMENT

DAMAGE TO A BUILDING AT INTERSECTION OF HWY 61 AND TAVERN
ROAD

0540 PM TSTM WND DMG 3 ESE LA FARGE 43.56N 90.58W
07/27/2009 VERNON WI AMATEUR RADIO

TREES DOWN NEAR COUNTY ROAD D AND NEAR RICHLAND COUNTY
LINE

0546 PM TSTM WND GST FIVE POINTS 43.31N 90.60W
07/27/2009 E60.00 MPH RICHLAND WI AMATEUR RADIO

0547 PM TSTM WND GST 5 SE VIOLA 43.46N 90.60W
07/27/2009 M73.00 MPH RICHLAND WI AMATEUR RADIO

0552 PM TSTM WND GST ASH RIDGE 43.47N 90.54W
07/27/2009 U0.00 MPH RICHLAND WI AMATEUR RADIO

VERY HIGH WIND GUSTS REPORTED FROM COUNTY ROAD A AND
HIGHWAY 56

0552 PM HAIL 2 S FIVE POINTS 43.29N 90.60W
07/27/2009 E0.88 INCH RICHLAND WI AMATEUR RADIO

0552 PM HAIL FIVE POINTS 43.31N 90.60W
07/27/2009 E1.00 INCH RICHLAND WI TRAINED SPOTTER

0610 PM HAIL 2 W FENNIMORE 42.98N 90.69W
07/27/2009 E0.75 INCH GRANT WI TRAINED SPOTTER

0625 PM TSTM WND DMG MUSCODA 43.19N 90.43W
07/27/2009 GRANT WI LAW ENFORCEMENT

POWER LINES AND TREES DOWN THROUGH TOWN

0702 PM HEAVY RAIN MOUNT ZION 43.26N 90.73W
07/27/2009 M0.56 INCH CRAWFORD WI CO-OP OBSERVER

0712 PM HAIL MONTFORT 42.97N 90.43W
07/27/2009 E0.75 INCH GRANT WI EMERGENCY MNGR

0730 PM HEAVY RAIN 1 N RICHLAND CENTER 43.35N 90.38W
07/27/2009 M1.04 INCH RICHLAND WI AMATEUR RADIO

0735 PM HAIL FENNIMORE 42.98N 90.65W
07/27/2009 E1.00 INCH GRANT WI EMERGENCY MNGR

0830 PM HEAVY RAIN BLUE RIVER 43.19N 90.57W
07/27/2009 E1.60 INCH GRANT WI PUBLIC

0836 PM FLASH FLOOD PLATTEVILLE 42.74N 90.48W
07/27/2009 GRANT WI EMERGENCY MNGR

SWOLLEN CREEKS IN PLATTEVILLE WITH WATER APPROACHING
BUILDINGS. SIGNIFICANT WATER ISSUES THROUGHOUT THE CITY.

0900 PM HEAVY RAIN PLATTEVILLE 42.74N 90.48W
07/27/2009 E2.10 INCH GRANT WI PUBLIC


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