Alert archive / Illinois / Tornado Warnings in 1993

Tornado Warning 8, NWS St. Louis, MO

July 20, 1993Perry County, Illinois

NWS St. Louis, MO issued this tornado warning at Jul 20, 1993, 8:16 PM CDT for Perry County, Illinois. It was in force for 38 min.

The area

The counties it named.

The facts

Issued: Jul 20, 1993, 8:16 PM CDT (01:16 UTC)
Expired: Jul 20, 1993, 8:54 PM CDT
In force: 38 min
Issued by: NWS St. Louis, MO
Area: Whole counties

County Perry County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 1.3 hours before the alert went out and 127 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1111 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1439 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 87 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSTL 210118
TORSTL
ILC145-210200-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
816 PM CDT TUE JUL 20 1993
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  900 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL ILLINOIS
 
   ...EASTERN PERRY COUNTY
 
AT 815 PM...A BRIEF TORNADO TOUCHDOWN WAS REPORTED BY THE PUBLIC JUST
EAST OF PICKNEYVILLE...NEAR ROUTE 154. THIS IS ABOUT 30 MILES SOUTHWEST
OF MOUNT VERNON.
 
THE STORM WAS MOVING EAST AT 30 MILES AN HOUR...AND WILL BE AFFECTING
THE TOWNS OF SUNFIELD...TAMAROA...AND ST JOHNS.
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
 
 
 
&

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jul 20, 5:23 PM CDT, 2 hours 53 minutes before

MOZ010-011-014-210000-

PRELIMINARY STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA MO
530 PM CDT TUE JUL 20 1993

TIME         COUNTY        REPORT
205 PM       BENTON       VERY HEAVY SHOWERS WITH WINDS GUSTING TO
                          50 MPH JUST NORTHWEST OF WARSAW.
245 PM       CAMDEN       WINDS GUSTING TO 57 MPH NEAR HWY FF NORTHWEST
                          OF CAMDENTON.
300 PM       CAMDEN       TREES DOWN AND HEAVY SHOWERS ON HIGHWAYS 5 AND
                          7 IN CLIMAX SPRINGS.
315 PM       CAMDEN       SIGNS AND TREES DOWN NEAR OSAGE BEACH.
320 PM       CAMDEN       TREES BLOWN DOWN ON MOBIL HOME NEAR OSAGE
                          BEACH.
355 PM       MONTGOMERY   TBREES DOWN IN DANVILLE.
400 PM       MONTGOMERY   MARBLE-SIZED HAIL 2 MILES SOUTHWEST OF
                          MONTGOMERY CITY.
LB

Local storm report, Jul 20, 5:30 PM CDT, 2 hours 46 minutes before

MOZ010-011-014-210000-

PRELIMINARY STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA MO
530 PM CDT TUE JUL 20 1993

TIME         COUNTY        REPORT
205 PM       BENTON       VERY HEAVY SHOWERS WITH WINDS GUSTING TO
                          50 MPH JUST NORTHWEST OF WARSAW.
245 PM       CAMDEN       WINDS GUSTING TO 57 MPH NEAR HWY FF NORTHWEST
                          OF CAMDENTON.
300 PM       CAMDEN       TREES DOWN AND HEAVY SHOWERS ON HIGHWAYS 5 AND
                          7 IN CLIMAX SPRINGS.
315 PM       CAMDEN       SIGNS AND TREES DOWN NEAR OSAGE BEACH.
320 PM       CAMDEN       TREES BLOWN DOWN ON MOBIL HOME NEAR OSAGE
                          BEACH.
355 PM       MONTGOMERY   TREES DOWN IN DANVILLE.
400 PM       MONTGOMERY   MARBLE-SIZED HAIL 2 MILES SOUTHWEST OF
                          MONTGOMERY CITY.
LB

Local storm report, Jul 20, 5:40 PM CDT, 2 hours 36 minutes before

MOZ010-011-014-210000-

PRELIMINARY STORM REPORT...CORRECTED TO ADD INFO.
NATIONAL WEATHER SERVICE COLUMBIA MO
540 PM CDT TUE JUL 20 1993

TIME         COUNTY        REPORT
205 PM       BENTON       VERY HEAVY SHOWERS WITH WINDS GUSTING TO
                          50 MPH JUST NORTHWEST OF WARSAW.
245 PM       CAMDEN       WINDS GUSTING TO 57 MPH NEAR HWY FF NORTHWEST
                          OF CAMDENTON.
300 PM       CAMDEN       TREES DOWN AND HEAVY SHOWERS ON HIGHWAYS 5 AND
                          7 IN CLIMAX SPRINGS.
315 PM       CAMDEN       SIGNS AND TREES DOWN NEAR OSAGE BEACH.
320 PM       CAMDEN       TREES BLOWN DOWN ON MOBIL HOME NEAR OSAGE
                          BEACH.
355 PM       MONTGOMERY   TREES DOWN IN DANVILLE.
400 PM       MONTGOMERY   MARBLE-SIZED HAIL 2 MILES SOUTHWEST OF
                          MONTGOMERY CITY.
245 PM       S. MILLER    NUMEROUS TREES DOWN...2 TO 3 FOOT DIAMETER
                          TREE FELL ON HOUSE IN IBERIA.  TIME IS
APPROXIMATE.

LB

Local storm report, Jul 20, 5:42 PM CDT, 2 hours 34 minutes before

MOZ010-011-014-210000-

PRELIMINARY STORM REPORT...CORRECTED TO ADD INFO.
NATIONAL WEATHER SERVICE COLUMBIA MO
540 PM CDT TUE JUL 20 1993

TIME         COUNTY        REPORT
205 PM       BENTON       VERY HEAVY SHOWERS WITH WINDS GUSTING TO
                          50 MPH JUST NORTHWEST OF WARSAW.
245 PM       CAMDEN       WINDS GUSTING TO 57 MPH NEAR HWY FF NORTHWEST
                          OF CAMDENTON.
300 PM       CAMDEN       TREES DOWN AND HEAVY SHOWERS ON HIGHWAYS 5 AND
                          7 IN CLIMAX SPRINGS.
315 PM       CAMDEN       SIGNS AND TREES DOWN NEAR OSAGE BEACH.
320 PM       CAMDEN       TREES BLOWN DOWN ON MOBIL HOME NEAR OSAGE
                          BEACH.
355 PM       MONTGOMERY   TREES DOWN IN DANVILLE.
400 PM       MONTGOMERY   MARBLE-SIZED HAIL 2 MILES SOUTHWEST OF
                          MONTGOMERY CITY.
245 PM       S. MILLER    NUMEROUS TREES DOWN...2 TO 3 FOOT DIAMETER
                          TREE FELL ON HOUSE IN IBERIA.  TIME IS
APPROXIMATE.

LB

Special weather statement, Jul 20, 7:45 PM CDT, 31 minutes before

MOZ012-210200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
745 PM CDT TUE JUL 20 1993

...THE SEVERE THUNDERSTORM WATCH FOR PORTIONS OF CENTRAL AND EASTERN
   MISSOURI HAS BEEN CANCELLED.

THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH
NUMBER 683.  THERE WILL CONTINUE TO BE SOME STRONG THUNDERSTORMS ACROSS
SOUTHEAST MISSOURI THROUGH MUCH OF THE EVENING.  HOWEVER...THE THREAT
OF SEVERE WEATHER IN EAST CENTRAL MISSOURI APPEARS TO BE OVER FOR
THIS EVENING.

TUCKER

Special weather statement, Jul 20, 7:50 PM CDT, 26 minutes before

MOZ012-210200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
745 PM CDT TUE JUL 20 1993

...THE SEVERE THUNDERSTORM WATCH FOR PORTIONS OF CENTRAL AND EASTERN
   MISSOURI HAS BEEN CANCELLED.

THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM WATCH
NUMBER 683.  THERE WILL CONTINUE TO BE SOME STRONG THUNDERSTORMS ACROSS
SOUTHEAST MISSOURI THROUGH MUCH OF THE EVENING.  HOWEVER...THE THREAT
OF SEVERE WEATHER IN EAST CENTRfAL MISSOURI APPEARS TO BE OVER FOR
THIS EVENING.

TUCKER

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 20, 7:03 PM CDT	Severe Thunderstorm Warning	LSX	Washington	42 min
Jul 20, 7:15 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	60 min

Nearby

Tornado Warnings in Illinois, 1993 Every tornado warning in 1993 Tornadoes in 1993

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.