Alert archive / Missouri / Tornado Warnings in 1994

Tornado Warning 10, NWS St. Louis, MO

April 26, 1994Jefferson County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 26, 1994, 9:23 PM CDT for Jefferson County, Missouri. It was in force for 52 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 26, 1994, 9:23 PM CDT (02:23 UTC)
Expired
Apr 26, 1994, 10:15 PM CDT
In force
52 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Jefferson County, MO

What was reported inside it

TimeReportWhereRemark
Apr 26, 9:35 PM CDTTornado F0Crystal City, MOA small tornado touched down briefly damaging a small area of power poles and trees.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 2.4 hours before the alert went out and 209 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 270225
TORSTL
MOC099-270315-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
923 PM CDT TUE APR 26 1994
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1015 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...NORTHERN JEFFERSON COUNTY
 
AT 922 PM...DOPPLER RADAR INDICATED A TORNADO NEAR DITTMER...7 MILES
NORTHWEST OF HILLSBORO.
 
IF YOU LIVE IN HOUSE SPRINGS...WEBER HILL...AND CEDAR RIDGE SEEK SHELTER
NOW!
 
THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING FOR NORTHERN
JEFFERSON COUNTY.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
GLASS

The office that day

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

IssuedProductOfficeCountiesLasted
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, 9:35 PM CDTSevere Thunderstorm WarningLSXIron, Saint Francois55 min
Apr 26, 9:46 PM CDTSevere Thunderstorm WarningLSXSaint Louis59 min
Apr 26, 9:54 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve66 min
Apr 27, 12:12 AM CDTSevere Thunderstorm WarningLSXFranklin, Jefferson48 min
Apr 27, 12:33 AM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis42 min
Apr 27, 2:00 AM CDTSevere Thunderstorm WarningLSXIron, Saint Francois, Washington45 min
Apr 27, 2:40 AM CDTSevere Thunderstorm WarningLSXSainte Genevieve50 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

Tornado Warnings in Missouri, 1994Every tornado warning in 1994Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.