NWS
St. Louis, Missouri

April 24th, 2002 Severe Weather Event
Affecting Several Portions of the Bi-State Region

Overview:

A typical spring synoptic situation manifested itself as a widespread severe weather event across the Bi-State Region during the afternoon hours on April 24th. Cold Canadian air spilled into the Central Plains behind a fast moving cold front that passed through the forecast area in less than 10 hours. Ahead of the front warm, moist, and unstable Gulf air was in place providing the necessary fuel for the development of widespread showers and thunderstorms.

Storms originated to the north and west of the forecast area and became widespread into northern portions of the St. Louis County Warning Area (CWA) of responsibility around 11:30 am and by 2 pm. By 2:30 pm, the southern half of our CWA also became active with severe weather. A total of 24 warnings were issued by the St. Louis Weather Forecast Office covering 20 counties. Widespread damage from hail and tornadic winds were reported with no injury to life.

Radar Analysis:
       
Radar Reflectivity
from WSR-88D KLSX

(image loop)
       
 
Damage Survey Assessment:
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1115 PM CDT THU APR 25 2002

...DAMAGE SURVEY INFORMATION FOR MADISON COUNTY MISSOURI TORNADO...

ON WEDNESDAY 24 APRIL 2002 A STRONG COLD FRONT TRIGGERED WIDESPREAD SEVERE THUNDERSTORMS ACROSS PORTIONS OF MISSOURI AND ILLINOIS. THESE THUNDERSTORMS PRODUCED MULTIPLE TORNADOES ACROSS SOUTHEAST MISSOURI INCLUDING TWO IN COUNTIES SERVED BY THE NATIONAL WEATHER SERVICE OFFICE IN ST. LOUIS. THIS REPORT SUMMARIZES THE FINDINGS FROM A DAMAGE SURVEY CONDUCTED BY A NWS STAFF MEMBER FOR THE TORNADO THAT HIT MADISON COUNTY MISSOURI.

AROUND 445 PM CDT...THE TORNADO TOUCHED DOWN APPROXIMATELY FOUR MILES SOUTH OF CHEROKEE PASS...OR ABOUT NINE MILES SOUTH OF FREDERICKTOWN. THE TORNADO CROSSED HIGHWAY 67 AT THIS LOCATION AND DAMAGED MULTIPLE STRUCTURES IN THE AREA. ONE TRAILER HOME WAS ROLLED 20 TO 30 YARDS OFF ITS FOUNDATION AND WAS COMPLETELY DESTROYED. A FRAME HOUSE TO THE SOUTH OF THE TRAILER HOME LOST ITS ROOF...AS DID A SHED TO ITS NORTH. BASED ON THIS DAMAGE...THE TORNADO WAS RATED F2 AT THIS LOCATION. THE WIDTH OF F2 DAMAGE ALONG THE TORNADO PATH WAS ESTIMATED AT 100 YARDS.

FROM THIS LOCATION THE TORNADO MOVED EAST TOWARD MARQUAND. IT REACHED THE AREA AROUND 500 PM CDT AND PRODUCED CONSIDERABLE DAMAGE. MANY LARGE TREES WERE UPROOTED OR SNAPPED OFF...AND NEARLY EVERY STRUCTURE WITHIN A 3 TO 4 BLOCK AREA OF THE TOWN WAS DAMAGED IN SOME WAY. SEVERAL FRAME BUILDINGS LOST ALL OR PART OF THEIR ROOF. THE WALLS OF A BRICK BUILDING UNDERGOING RESTORATION SUFFERED A PARTIAL COLLAPSE. JUST WEST OF TOWN A PILE OF DEBRIS CONSISTING OF TWO-BY-TEN BOARDS WAS FOUND DRIVEN LIKE A MISSILE INTO THE GROUND. BASED ON ALL OF THESE OBSERVATIONS...THE TORNADO WAS RATED F2 AT MARQUAND. THE WIDTH OF F2 DAMAGE ALONG THE TORNADO PATH WAS APPROXIMATELY 200 YARDS.

AT BOTH LOCATIONS...DAMAGE RATED AS CATEGORY F1 WAS OBSERVED IN AN AREA NEARLY 400 YARDS WIDE. THIS CONSISTED PRIMARILY OF UPROOTED OR SNAPPED TREES...AS WELL AS MINOR DAMAGE TO HOUSES. EVEN LIGHTER DAMAGE...RATED AS F0 AND CONSISTING OF SMALL UPROOTED TREES OR BROKEN OR SNAPPED BRANCHES...WAS FOUND IN AN AREA APPROXIMATELY 0.9 MILES WIDE ALONG THE TORNADO PATH.

DAMAGE INFORMATION WAS NOT AVAILABLE FOR THE LESS ACCESSIBLE WOODED AREA BETWEEN CHEROKEE PASS AND MARQUAND...NOR WAS IT AVAILABLE FOR THE WOODED AREAS WEST OF CHEROKEE PASS AND EAST OF MARQUAND. EVEN SO...ASSUMING THE TORNADO STAYED ON THE GROUND THE ENTIRE TIME BETWEEN CHEROKEE PASS AND MARQUAND...THE TOTAL LENGTH OF THE TORNADO PATH WAS OVER NINE MILES.
 
Preliminary Storm Reports for April 24th:
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
650 PM CDT WED APR 24 2002
TIME(CDT)

1150 AM


1210 PM

1227 PM

1227 PM

1230 PM

1230 PM

1230 PM

1230 PM

1236 PM

1245 PM

1258 PM

0104 PM

0108 PM

0119 PM

0121 PM

0130 PM

0132 PM

0132 PM

0147 PM

0158 PM

0159 PM

0208 PM

0210 PM

0210 PM

0215 PM

0217 PM

0217 PM

0229 PM

0232 PM

0239 PM

0240 PM

0240 PM

0240 PM

0240 PM

0242 PM

0254 PM

0255 PM


0300 PM


0307 PM

0310 PM

0310 PM

0355 PM

0414 PM


0430 PM

0443 PM

0445 PM

0450 PM


0500 PM

0509 PM

0509 PM

0525 PM
LOCATION (COUNTY)

HUNNEWELL MO (SHELBY)


BETHEL MO (SHELBY)

HANNIBAL MO (MARION)

HANNIBAL MO (MARION)

FRANKFORD MO (PIKE)

EDINA MO (KNOX)

NEWARK MO (KNOX)

1SE PALMYRA MO (MARION)

PAYSON IL (ADAMS)

STEFFENVILLE MO (LEWIS)

1S BARRY IL (PIKE)

NEBO IL (PIKE)

2S QUINCY IL (ADAMS)

3S QUINCY IL (ADAMS)

QUINCY IL (ADAMS)

PITTSFIELD IL (PIKE)

WHITE HALL IL (GREENE)

ROODHOUSE IL (GREENE)

1S CARROLLTON IL (GREENE)

GREENFIELD IL (GREENE)

SCOTTVILLE IL (MACOUPIN)

10NE JERSEYVILLE IL (JERSEY)

PALMYRA IL (MACOUPIN)

HETTICK IL (MACOUPIN)

CARLINVILLE IL (MACOUPIN)

MEDORA IL (MACOUPIN)

CARLINVILLE IL (MACOUPIN)

SHIPMAN IL (MACOUPIN)

LITCHFIELD IL (MONTGOMERY)

GILLESPIE IL (MACOUPIN)

GILLESPIE IL (MACOUPIN)

2NW GILLESPIE IL (MACOUPIN)

LITCHFIELD IL (MONTGOMERY)

1N BUNKER HILL IL (MACOUPIN)

GILLESPIE IL (MACOUPIN)

HILLSBORO IL (MONTGOMERY)

TAYLOR SPRINGS IL (MONTGOMERY)


MCKITTRICK MO (MONTGOMERY)


COFEEN IL (MONTGOMERY)

1N GREENVILLE IL (BOND)

RAMSEY IL (FAYETTE)

HIGH RIDGE MO (JEFFERSON)

IRONTON MO (IRON)


KIMMSWICK MO (JEFFERSON)

2S FREDERICKTOWN MO (MADISON)

RUMA IL (RANDOLPH)

MARQUAND MO (MADISON)


ELLIS GROVE IL (RANDOLPH)

4E SABULA MO (IRON)

10W SPARTA IL (RANDOLPH)

SPARTA IL (RANDOLPH)
EVENT

1.75 INCH HAIL


1.00 INCH HAIL

1.00 INCH HAIL

0.75 INCH HAIL

1.75 INCH HAIL

1.75 INCH HAIL

1.00 INCH HAIL

4.50 INCH HAIL

0.75 INCH HAIL

1.00 INCH HAIL

0.75 INCH HAIL

1.75 INCH HAIL

0.75 INCH HAIL

1.00 INCH HAIL

0.88 INCH HAIL

2.75 INCH HAIL

1.00 INCH HAIL

1.00 INCH HAIL

1.75 INCH HAIL

1.75 INCH HAIL

1.75 INCH HAIL

1.75 INCH HAIL

0.75 INCH HAIL

0.75 INCH HAIL

1.75 INCH HAIL

1.75 INCH HAIL

1.75 INCH HAIL

1.75 INCH HAIL

1.00 INCH HAIL

2.00 INCH HAIL

1.25 INCH HAIL

0.75 INCH HAIL

0.75 INCH HAIL

1.75 INCH HAIL

1.75 INCH HAIL

0.75 INCH HAIL

0.75 INCH HAIL


WIND DAMAGE


1.00 INCH HAIL

1.75 INCH HAIL

1.75 INCH HAIL

0.75 INCH HAIL

1.00 INCH HAIL


0.88 INCH HAIL

0.75 INCH HAIL

0.75 INCH HAIL

TORNADO


0.75 INCH HAIL

1.00 INCH HAIL

0.75 INCH HAIL

0.75 INCH HAIL
REMARKS

REPORTED BY SEVERE WEATHER SPOTTERS. PEA SIZE HAIL CLUMPED TOGETHER.

PUBLIC REPORT.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY MARION COUNTY SHERIFFS DEPT.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY SEVERE WEATHER SPOTTERS.

CONFIRMED PUBLIC REPORT.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY PIKE COUNTY SHERIFFS DEPT.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY PIKE COUNTY EMA. HAIL DAMAGE TO CARS.

REPORTED BY GREENE COUNTY EMA.

REPORTED BY GREENE COUNTY EMA.

REPORTED BY GREENE COUNTY EMA.

REPORTED BY GREENE COUNTY EMA.

REPORTED BY MACOUPIN COUNTY SHERIFFS DEPT.

REPORTED BY JERSEY COUNTY SHERIFFS DEPT.

REPORTED BY AMATEUR RADIO OPERATOR.

REPORTED BY AMATEUR RADIO OPERATOR.

REPORTED BY AMATEUR RADIO OPERATOR.

REPORTED BY MEDORA POLICE.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY AMATEUR RADIO OPERATOR.

REPORTED BY AMATEUR RADIO OPERATOR.

REPORTED BY AMATEUR RADIO OPERATOR.

REPORTED BY AMATEUR RADIO OPERATOR.

REPORTED BY AMATEUR RADIO OPERATOR.

REPORTED BY AMATEUR RADIO OPERATOR.

REPORTED BY AMATEUR RADIO OPERATOR.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY SEVERE WEATHER SPOTTERS. COVERED THE GROUND.

REPORTED BY MONTGOMERY COUNTY SHERIFFS DEPT. LARGE TREE DOWN ON HIGHWAY 19.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY BOND COUNTY SHERIFFS DEPT.

REPORTED BY FAYETTE COUNTY SHERIFFS DEPT.

PUBLIC REPORT.

REPORTED BY IRON COUNTY SHERIFFS DEPT. HAIL COVERED THE GROUND.

PUBLIC REPORT.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY RANDOLPH COUNTY EMA.

REPORTED BY MADISON COUNTY EMA. DAMAGE TO FIRE STATION AND COURT HOUSE.

REPORTED BY RANDOLPH COUNTY EMA.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY SEVERE WEATHER SPOTTERS.

REPORTED BY RANDOLPH COUNTY EMA.

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