Alert archive / Missouri / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 21, NWS St. Louis, MO

April 26, 1994Washington County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 26, 1994, 7:46 PM CDT for Washington County, Missouri. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
Apr 26, 1994, 7:46 PM CDT (00:46 UTC)
Expired
Apr 26, 1994, 8:45 PM CDT
In force
59 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Washington County, MO

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 0.8 hours before the alert went out and 216 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 270047
SVRSTL
MOC221-270145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
746 PM CDT TUE APR 26 1994
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  845 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...SOUTHERN WASHINGTON COUNTY
 
AT 743 PM...NWS DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR
VIBURNUM...20 MILES SOUTHWEST OF POTOSI. THIS STORM PRODUCED GOLF BALL
SIZE HAIL NEAR VIBURNUM AT 740 PM AND WAS MOVING TO THE NORTHEAST AT 35
MPH.
 
IF YOU LIVE IN THE TOWN OF COUTOIS AND BELGRADE SEEK SHLETER NOW!
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
 
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, 7:47 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 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

Severe 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.