Alert archive / Illinois / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 36, NWS St. Louis, MO

April 26, 1994Randolph County, Illinois; Sainte Genevieve County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 26, 1994, 9:54 PM CDT for Randolph County, Illinois; Sainte Genevieve County, Missouri. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Apr 26, 1994, 9:54 PM CDT (02:54 UTC)
Expired
Apr 26, 1994, 11:00 PM CDT
In force
66 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties Randolph County, IL, Sainte Genevieve County, MO

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 2.9 hours before the alert went out and 153 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-pSkew-T log-p diagram, Paducah/Barkley, KY at 00:00Z on 1994-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2999 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Paducah/Barkley, KY at 00:00Z on 1994-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2999 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1036 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
139 m²/s²
Significant tornado parameter
1.8
Supercell composite
10.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSTL 270255
SVRSTL
ILC157-MOC186-270400-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
954 PM CDT TUE APR 26 1994
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHWEST ILLINOIS
 
   ...RANDOLPH COUNTY
 
 
IN EAST CENTRAL MISSOURI
 
   ...STE GENEVIEVE COUNTY
 
AT 950 PM...NWS DOPPLER RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS
EXTENDING FROM NEAR BELLEVILLE TO 10 MILES WEST OF FARMINGTON. THESE
STORMS WERE MOVING TO THE EAST NORTHEAST AT 40 MPH AND WILL LIKELY
PRODUCE DAMAGING WINDS.
 
IF YOU LIVE IN THE TOWNS OF STE GENEVIEVE...BLOOMSDALE...
WEINGARTEN...PRAIRIE DU ROCHER AND SPARTA BE PREPARED TO SEEK
SHELTER IMMEDIATELY.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NOH ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
 
FG

What forecasters said that day

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

In the hours before

Special weather statement, Apr 26, 5:48 PM CDT, 4 hours 6 minutes before
MOZ024-025-032-033-039>042-045>051-055>059-068>070-262340-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA MO
540 PM CDT TUE APR 26 1994

...A TORNADO WATCH IS IN EFFECT FOR THE SOUTH HALF OF CENTRAL MISSOURI
UNTIL 1100 PM CDT...

AT 535 PM CDT RADAR SHOWED STRONG THUNDERSTORMS MOVING UP INTO THE
SOUTH COUNTIES OF CENTRAL MISSOURI...AROUND LEBANON IN LACLEDE COUNTY
60 MILES SOUTH SOUTHWEST OF JEFFERSON CITY...AND ABOUT 15 MILES SOUTH
OF FORT LEONARD WOOD IN PULASKI COUNTY.  THE COMMUNITIES OF WANESVILLE
AND RICHLAND WILL BE AFFECTED BY THESE STORMS BETWEEN 600 AND 615 PM
CDT.

IF YOU OBSERVE SEVERE STORMS...TAKE SHELTER IMMEDIATELY...THEN CALL
THE NEAREST LAW ENFORCEMENT AGENC:Y TO RELAY YOUR REPORT TO THE
NATIONAL WEATHER SERVICE OFFICE.  DO NOT STAY OUTDOORS IF YOU SEE
STRONG STORMS APPROACHING YOUR AREA.

LB
Special weather statement, Apr 26, 6:14 PM CDT, 3 hours 40 minutes before
MOZ061-063-ILZ098-099-270015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
614 PM CDT TUE APR 26 1994

...STRONG THUNDERSTORMS DEVELOPING IN THE ST LOUIS AREA...

AT 610 PM...NWS RADAR SHOWED STRONG THUNDERSTORMS DEVELOPING OVER
NORTHERN ST CHARLES COUNTY INTO SOUTHERN CALHOUN COUNTY ILLINOIS.
THESE STORMS WERE MOVING TO THE NORTHEAST AT 35 MPH AND WILL BE
AFFECTING NORTHERN PORTIONS OF THE ST LOUIS AREA.

IF YOU ARE IN THE PATH OF THESE STORMS EXPECT BRIEF HEAVY
RAIN...GUSTY WINDS...DEADLY LIGHTNING...AND POSSIBLY SMALL HAIL.
PONDING OF WATER MAY ALSO OCCUR ON AREA ROADWAYS.

MOTORISTS AND RESIDENTS ACROSS NORTHERN PORTIONS OF THE ST LOUIS METRO
AREA SHOULD KEEP A~DVISED TO THE LATEST STATEMENTS FROM THE NATIONAL
WEATHER SERVICE.

GLASS
Special weather statement, Apr 26, 6:47 PM CDT, 3 hours 7 minutes before
MOZ065-036-061-063-064-ILZ098-099-100-102-101-270145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
643 PM CDT TUE APR 26 1994

...A TORNADO WATCH IS IN EFFECT FOR EAST CENTRAL MISSOURI AND SOUTHWEST
ILLINOIS UNTIL MIDNIGHT...

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR EAST CENTRAL
MISSOURI AND SOUTHWEST ILLINOIS UNTIL MIDNIGHT. THIS WATCH INCLUDES THE
ENTIRE ST LOUIS METRO AREA.

AT 640 PM...NWS DOPPLER RADAR SHOWED STRONG THUNDERSTORMS DEVELOPING
FROM NEAR SPRINGFIELD ILLINOIS THROUGH THE ST LOUIS AREA TO NEAR FORT
LEONARD WOOD.  THESE THUNDERSTORMS WERE MOVING TO THE NORTHEAST AT 35
MPH.  THE ATMOSPHERE ACROSS EAST CENTRAL MISSOURI CONTINUES TO BE VERY
UNSTABLE AND INDICATIIONS ARE THAT EXPLOSIVE THUNDERSTORM DEVELOPMENT
WILL CONTINUE OVER THE FEW HOURS AND CONTINUE THROUGH THE EVENING.

RESIDENTS OF EAST CENTRAL MISSOURI ARE ADVISED TO CLOSELY MONITOR LOCAL
MEDIA SOURCES OR NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND/OR
WARNINGS.

REMEMBER A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE
DEVELOPMENT OF SEVERE THUNDERSTORMS AND TORNADOES IN AND CLOSE TO THE
WATCH AREA.

GLASS
Special weather statement, Apr 26, 7:04 PM CDT, 2 hours 50 minutes before
MOZ058-070>076-082>087-097>100-106>115-270205-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
704 PM CDT TUE APR 26 1994

...TORNADO WATCH IN EFFECT FOR SOUTHEAST MISSOURI EXCLUDING THE
BOOTHEEL UNTIL MIDNIGHT...

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WATCH FOR MUCH OF
SOUTHEAST MISSOURI EXCLUDING THE BOOTHEEL UNTIL MIDNIGHT.  LARGER
CITIES INCLUDED IN THE WATCH ARE FARMINGTON...WEST PLAINS...AND
POPLAR BLUFF.

REMEMBER A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR THE
DEVELOPMENT OF SEVERE THUNDERSTORMS AND TORNADOES IN AND CLOSE TO THE
WATCH AREA.

RESIDENTS OF SOUTHEAST MISSOURI SHOULD REMAIN ALERT AND STAY TUNED TO
LOCAL MEDIA OUTLETS.

 IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IN A HOME OR
BUSINESS IS AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE.  AVOID
WINDOWS.

GLASS
Special weather statement, Apr 26, 7:42 PM CDT, 2 hours 12 minutes before
MOZ062-065-061-063-064-ILZ100-102-101-270145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
742 PM CDT TUE APR 26 1994

...STRONG THUNDERSTORMS DEVELOPING ACROSS THE BI-STATE AREA...

AT 740 PM...WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM OVER
FRANKLIN COUNTY MISSOURI.  THE LATEST WEATHER DATA SUGGESTS THAT STRONG
THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS EASTERN MISSOURI AND
SOUTHWEST ILLINOIS...INCLUDING THE ST LOUIS METRO AREA...BETWEEN NOW AND
9 PM THIS EVENING.

REMEMBER...A TORNADO WATCH IS IN EFFECT FOR MUCH OF EAST CENTRAL
MISSOURI AND SOUTHWEST PORTIONS OF ILLINOIS UNTIL MIDNIGHT.  PEOPLE
THROUGHOUT THE AREA SHOULD REMAIN ALERT TO THE THREAT OF ~SEVERE
WEATHER....AND MONITOR NOAA WEATHER RADIO...OR LOCAL RADIO AND TV
STATIONS...FOR FURTHER WEATHER UPDATES THROUGHOUT THE EVENING.

TRUETT
Special weather statement, Apr 26, 8:16 PM CDT, 1 hour 38 minutes before
MOZ001>115-270200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
815 PM CDT TUE APR 26 1994

...THE TORNADO WATCH FOR PARTS OF SOUTHWEST MISSOURI IS NO LONGER
IN EFFECT...

THE TORNADO WATCH FOR SOUTHWEST MISSOURI IS NO LONGER IN EFFECT.  THE
SEVERE THUNDERSTORMS HAVE MOVED INTO SOUTH CENTRAL AND CENTRAL MISSOURI
...ENDING THE THREAT OF LARGE HAIL AND DAMAGING WINDS OVER SOUTHWEST
MISSOURI.

THE FOLLOWING COUNTIES ARE CLEARED FROM THE WATCH...

BARTON             JASPER           NEWTON              MCDONALD
LAWRENCE           BARRY            STONE

THE CITIES OF JOPLIN AND NEOSHO ARE ALSO CLEARED FROM THE WATCH.

TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 26, 8:07 PM CDTSevere Thunderstorm WarningLSXCalhoun, Jersey68 min
Apr 26, 8:55 PM CDTSevere Thunderstorm WarningLSXMadison65 min
Apr 26, 9:12 PM CDTTornado WarningLSXMacoupin, Montgomery33 min
Apr 26, 9:27 PM CDTTornado WarningLSXMonroe48 min
Apr 26, 9:43 PM CDTSevere Thunderstorm WarningLSXSaint Clair47 min
Apr 26, 10:14 PM CDTSevere Thunderstorm WarningLSXClinton, Washington61 min
Apr 26, 10:30 PM CDTSevere Thunderstorm WarningLSXBond45 min
Apr 26, 10:39 PM CDTSevere Thunderstorm WarningLSXFayette51 min
Apr 26, 10:47 PM CDTSevere Thunderstorm WarningLSXJefferson, Marion58 min
Apr 27, 12:33 AM CDTSevere Thunderstorm WarningLSXMonroe, Saint Clair42 min
Apr 27, 1:12 AM CDTSevere Thunderstorm WarningLSXClinton, Saint Clair48 min
Apr 27, 2:40 AM CDTSevere Thunderstorm WarningLSXRandolph50 min
Apr 27, 3:02 AM CDTSevere Thunderstorm WarningLSXPerry43 min
Apr 27, 3:20 AM CDTTornado WarningLSXPerry27 min
Apr 27, 6:58 PM CDTSevere Thunderstorm WarningLSXMadison, Saint Clair47 min
Apr 26, 7:08 PM CDTSevere Thunderstorm WarningLSXIron, Reynolds67 min
Apr 26, 7:17 PM CDTSevere Thunderstorm WarningLSXFranklin58 min
Apr 26, 7:27 PM CDTSevere Thunderstorm WarningLSXPhelps63 min
Apr 26, 7:32 PM CDTSevere Thunderstorm WarningLSXCrawford, Dent43 min
Apr 26, 7:46 PM CDTSevere Thunderstorm WarningLSXWashington59 min
Apr 26, 7:47 PM CDTSevere Thunderstorm WarningLSXSaint Charles43 min
Apr 26, 8:00 PM CDTSevere Thunderstorm WarningLSXSaint Louis60 min
Apr 26, 8:15 PM CDTSevere Thunderstorm WarningLSXFranklin, Warren60 min
Apr 26, 8:29 PM CDTSevere Thunderstorm WarningLSXSaint Louis46 min
Apr 26, 8:34 PM CDTSevere Thunderstorm WarningLSXSaint Charles56 min
Apr 26, 8:39 PM CDTSevere Thunderstorm WarningLSXCrawford66 min
Apr 26, 8:47 PM CDTTornado WarningLSXCrawford43 min
Apr 26, 8:52 PM CDTSevere Thunderstorm WarningLSXWashington68 min
Apr 26, 9:16 PM CDTSevere Thunderstorm WarningLSXJefferson59 min
Apr 26, 9:21 PM CDTSevere Thunderstorm WarningLSXLincoln, Pike54 min
Apr 26, 9:23 PM CDTTornado WarningLSXJefferson52 min
Apr 26, 9:35 PM CDTSevere Thunderstorm WarningLSXIron, Saint Francois55 min
Apr 26, 9:46 PM CDTSevere Thunderstorm WarningLSXSaint Louis59 min
Apr 27, 12:12 AM CDTSevere Thunderstorm WarningLSXFranklin, Jefferson48 min
Apr 27, 2:00 AM CDTSevere Thunderstorm WarningLSXIron, Saint Francois, Washington45 min
Apr 27, 4:54 PM CDTSevere Thunderstorm WarningLSXPike36 min
Apr 27, 5:07 PM CDTSevere Thunderstorm WarningLSXIron, Reynolds68 min
Apr 27, 6:02 PM CDTSevere Thunderstorm WarningLSXMadison, Saint Francois43 min
Apr 27, 6:30 PM CDTTornado WarningLSXIron, Reynolds60 min
Apr 27, 6:38 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve48 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1994Severe Thunderstorm Warnings in Missouri, 1994Every severe thunderstorm warning in 1994

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.