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PUBLIC INFORMATION STATEMENT...CORRECTION...
NATIONAL WEATHER SERVICE ST LOUIS MO
350 PM CDT FRI JULY 21 2006

...PRELIMINARY DAMAGE SURVEY FOR THE JULY 19 2006 WIDESPREAD WIND
DAMAGE EVENT OVER PARTS OF SOUTHWEST ILLINOIS...ST. LOUIS METRO
AREA...

PERSONNEL FROM THE NATIONAL WEATHER SERVICE OFFICE IN ST. LOUIS
SURVEYED DAMAGE OVER PARTS OF MACOUPIN..MADISON...AND ST. LOUIS
COUNTY AND CITY FROM WEDNESDAY AFTERNOON AND EVENING SEVERE STORM
EVENT.

THE DAMAGE TO TREES AND POWERLINES FROM WEDNESDAY AFTERNOON AND
EVENING SEVERE STORM EVENT WAS DUE TO STRAIGHT-LINE WINDS OR
DOWNBURSTS. THE DEGREE OF DAMAGE OVER THESE AREAS SUGGESTED THAT
WIND SPEEDS RANGED FROM 70 TO AS HIGH AS 80 MPH OVER THE IMMEDIATE
ST. LOUIS METRO AREA. MANY OF THE LARGE TREES AND TREE LIMBS WERE
LYING TO THE SOUTH AND SOUTHWEST. AREAS OF DAMAGE OVER PARTS OF
SOUTHWEST ILLINOIS SUGGESTED THAT WIND SPEEDS RANGED FROM 70 TO NEAR
90 MPH IN SOME AREAS. TWENTY FIVE HOMES SUSTAINED VARYING DEGREES OF
ROOF AND SIDING DAMAGE JUST FROM THE WIND NORTHEAST OF BETHALTO IN
SOUTHWEST ILLINOIS.

TWO TORNADO DAMAGE TRACKS WERE UNCOVERED OVER PARTS OF SOUTHWEST
ILLINOIS FROM WEDNESDAY EVENT. ONE TORNADO TOUCHDOWN OCCURRED 1
MILE NORTH OF BUNKER HILL ILLINOIS NEAR THE INTERSECTION OF HIGHWAYS
159 AND 138. LAW ENFORCEMENT OBSERVED THE TORNADO OVER AN OPEN
FIELD. THE DAMAGE TRACK WAS LESS THAN 1/5 MILE IN LENGTH. THE
TORNADO OCCURRED AT APPROXIMATELY 650 PM CDT.

THE SECOND TORNADO OCCURRED APPROXIMATELY 1 MILE SOUTH OF
EDWARDSVILLE NEAR HIGHWAY 159. LAW ENFORCEMENT AND THE PUBLIC
OBSERVED A BRIEF TOUCHDOWN OVER THIS AREA IN AN OPEN FIELD. THE
TORNADO TOUCHDOWN APPROXIMATELY OCCURRED AT 725 PM CDT.

HAIL THE SIZE OF NICKLES TO QUARTERS DAMAGED SEVERAL HUNDRED ACRES
OF CORN OVER PARTS OF SOUTHEAST MACOUPIN THROUGH NORTHWEST MADISON
COUNTY. MUCH OF THE HAIL DAMAGE WAS ALONG AND WEST OF HIGHWAY 159.
FROM BUNKER HILL SOUTH THROUGH 7 MILES NORTH OF EDWARDSVILLE. THE
HAIL OCCURRED BETWEEN 640 AND 710 PM CDT.

THE STORM WHICH CAUSED THE EXTENSIVE TREE AND POWERLINE DAMAGE ON
WEDNESDAY IS REFERRED TO AS A MESOSCALE CONVECTIVE SYSTEM.

$$

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