At least ten tornadoes confirmed during Wisconsin storms - WKOW 27: Madison, WI Breaking News, Weather and Sports

At least ten tornadoes confirmed during Wisconsin storms

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UNDATED (WKOW) -- The National Weather Service confirms at least ten tornadoes touched down on Sunday, making it the biggest April tornado outbreak in Wisconsin history.

Here's a little more information about the tornadoes from the National Weather Service:

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1022 PM CDT MON APR 11 2011

...BIGGEST APRIL TORNADO OUTBREAK IN WISCONSIN HISTORY...

APRIL 10 2011 WILL GO DOWN AS ONE OF THE BIGGER TORNADO OUTBREAKS IN WISCONSIN HISTORY.  IT IS TIED FOR THE BIGGEST TORNADO OUTBREAK IN TERMS OF NUMBERS OF TORNADOES IN ONE DAY IN THE MONTH OF APRIL (APRIL 27 1984-WALES F4 IN WAUKESHA COUNTY)

SO FAR...AT LEAST 10 TORNADOES HAVE BEEN CONFIRMED AS THREE NWS OFFICES ARE COMPLETING STORM SURVEYS.

HERE ARE THE TORNADO TOTALS SO FAR:

NWS GREEN BAY AREA:         7*
NWS LA CROSSE AREA:         2
NWS TWIN CITIES AREA:         2

THE TOTAL SO FAR IS 10* TORNADOES.  ONE OF THE TORNADOES CROSSED FROM ADAMS INTO WAUSHARA COUNTY...WHICH CROSSES FROM NWS LA CROSSE TO GREEN BAY (THUS ONLY 10 TORNADOES...NOT 11 AS THE MATH ABOVE WOULD SUGGEST).

ACCORDING TO NWS GREEN BAY...THIS NUMBER OF 7 TIES FOR THE BIGGEST TORNADO OUTBREAK EVER IN NORTHEAST AND CENTRAL WISCONSIN...THEIR AREA OF WARNING RESPONSIBILITY. ADDITIONAL SURVEYS AND INVESTIGATION COULD LEAD TO ADDITIONAL DOCUMENTED TORNADOES IN THE COMING DAYS.

HOW MANY TORNADOES HAS WISCONSIN HAD IN ONE DAY?

WISCONSIN NORMALLY DOESN'T HAVE MANY TORNADOES OCCURRING ON THE SAME DAY...CONSIDERING IT AVERAGES ONLY 21 TORNADOES PER YEAR.  HOWEVER...WHEN A TORNADIC WEATHER PATTERN DOES SET UP OVER WISCONSIN...THE BADGER STATE CAN HAVE MANY TORNADOES OCCURRING ON THE SAME DAY.

THE TABLE BELOW LISTS THOSE DAYS IN WISCONSIN WITH THE LARGEST NUMBER OF DOCUMENTED TORNADOES GOING BACK TO 1844. THE 10 TORNADOES DOCUMENTED ON APRIL 10 2011 PLACES THAT DAY TIED FOR 7TH POSITION IN THE TOP-10 RANKINGS.

     ...RANK...      ...DATE...      ...NUMBER OF EVENTS...

         01          MAY 08 1988               24

         02          JULY 03 1983              22

         03          JUNE 08 1993              18

         04          JUNE 23 2004              17

         05          AUGUST 09 1979         12

         05          JULY 18 1996               12

         07          MAY 24 1989               10

         07          APRIL 27 1984             10

         07          JULY 15 1980               10

         07          JUNE 26 1969              10

         07          JULY 10 1966               10

         07          JUNE 04 2005              10

         07          JULY 22 2010               10

   ***07***       APRIL 10 2011               10

THE NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN FORECAST OFFICE SERVICES 20 COUNTIES IN SOUTH-CENTRAL AND SOUTHEAST WISCONSIN. THIS COUNTY WARNING AREA /CWA/ CONSISTS OF THE FOLLOWING COUNTIES...

COLUMBIA...DANE...DODGE...FOND DU LAC...GREEN...GREEN LAKE...IOWA...JEFFERSON...KENOSHA...LAFAYETTE...MARQUETTE...MILWAUKEE...OZAUKEE...RACINE...

ROCK...SAUK...SHEBOYGAN...WALWORTH...WASHINGTON...AND WAUKESHA...

NO TORNADOES WERE DOCUMENTED AS OF YET IN THIS AREA.  THE WORST STORMS MISSED OUR AREA BY ONE COUNTY TO THE NORTH.

BELOW IS THE TOP-10 RANKING FOR THOSE DAYS WITH THE LARGEST NUMBER OF DOCUMENTED TORNADOES ON A GIVEN DAY IN THE MILWAUKEE/SULLIVAN CWA.

     ...RANK...      ...DATE...      ...NUMBER OF EVENTS...

         01          MAY 08 1988               11

         02          AUGUST 09 1979         10

         02          JULY 18 1996               10

         02          JULY 22 2010               10

         05          JUNE 08 1993               08

         05          JUNE 23 2004               08

         07          JUNE 08 1984               07

         08          JULY 03 1983                06

         08          JUNE 06 1980               06

         10          AUGUST 22 1964          05

         10          APRIL 11 1965              05

         10          MAY 24 1989                05

******************

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
730 PM CDT MON APR 11 2011

...PRELIMINARY TORNADO OUTBREAK INFORMATION...

AT LEAST SEVEN TORNADOES AFFECTED THE NWS GREEN BAY SERVICE AREA SUNDAY
EVENING.

HERE IS SOME PRELIMINARY INFORMATION ON FOUR OF THE TORNADOES.  THIS
INFORMATION IS SUBJECT TO CHANGE AFTER ADDITIONAL EVIDENCE IS REVIEWED.

...MERRILL...
TIME: AFTER 600 PM CDT /EXACT TIME TO BE DETERMINED/
AREA AFFECTED: APPROX 1 MILE NORTH OF HAMBURG TO NEAR GLEASON
STRENGTH: TO BE DETERMINED--AT LEAST EF2, POSSIBLY EF3
PATH LENGTH: UP TO 22 MILES
PATH WIDTH: UP TO 1/2 MILE WIDE
ADDITIONAL INFORMATION:  THE WORST DAMAGE...POSSIBLY EF3...OCCURRED
APPROXIMATELY AT 618 PM JUST NORTH OF THE MERRILL AIRPORT.

...KAUKAUNA AREA...
TIME: 844 PM TO 846 PM CDT
AREA AFFECTED: SOUTH AND SOUTHWEST SIDE OF KAUKAUNA
STRENGTH: EF1 WITH WINDS ESTIMATED 95 TO 105 MPH
PATH LENGTH: AT LEAST 1.5 MILES LONG
PATH WIDTH: 125 YARDS
ADDITIONAL INFORMATION: OVER 100 HOMES WERE AFFECTED, MANY WITH
SIGNIFICANT ROOF DAMAGE.

...POY SIPPI-BOOM BAY-WINCHESTER...
TIME: 753 PM TO 807 PM CDT
AREA AFFECTED: POY SIPPI/LAKE POYGAN/BOOM BAY EAST-NORTHEAST TO CR M AND
MM
STRENGTH: EF1 WITH WINDS 90 TO 100 MPH
PATH LENGTH: APPROX 14.8 MILES LONG BUT NON-CONTINUOUS
PATH WIDTH: AT LEAST 100 YARDS
ADDITIONAL INFORMATION: STRAIGHT LINE WIND DAMAGE ALSO OCCURRED TO THE
SOUTH OF THE TORNADO PATH IN WINNEBAGO COUNTY.

...WEST BLOOMFIELD/READFIELD...
TIME: TO BE DETERMINED
STRENGTH: EF1 WITH WINDS 90 TO 100 MPH
PATH LENGTH: TO BE DETERMINED
PATH WIDTH: 200 YARDS
ADDITIONAL INFORMATION: THIS WAS THE EARLIER TORNADO THAT AFFECTED THE
NORTHERN PART OF WAUSHARA COUNTY. MORE INFORMATION ON THIS TORNADO WILL
BE MADE AVAILABLE TUESDAY.

...OTHER TORNADOES...
INFORMATION ABOUT OTHER TORNADOES THAT AFFECTED THE NWS GREEN BAY
SERVICE AREA...INCLUDING THOSE IN FOREST COUNTY COUNTY...WERE SUMMARIZED
IN A PREVIOUS PUBLIC INFORMATION STATEMENT.  IN ADDITION...A TORNADO
THAT AFFECTED ADAMS COUNTY MOVED INTO WESTERN WAUSHARA COUNTY SOUTHEAST
OF HANCOCK.

PLEASE NOTE THAT THIS IS PRELIMINARY DATA. ADDITIONAL INFORMATION...
INCLUDING THE RESULTS OF FLY-OVERS BY THE DNR...WILL BE ISSUED AS SOON
AS A COMPLETE EVALUATION IS MADE LATER THIS WEEK.

 

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