Alert archive / Missouri / Tornado Warnings in 1998

Tornado Warning 8, NWS St. Louis, MO

April 13, 1998Warren County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 13, 1998, 3:52 PM CDT for Warren County, Missouri. It was in force for 53 min. 5 reports 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 13, 1998, 3:52 PM CDT (20:52 UTC)
Expired
Apr 13, 1998, 4:45 PM CDT
In force
53 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Warren County, MO

The radar

The St Louis radar (KLSX), 42 km from the middle of the area, began a volume at 20:56 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Apr 13, 4:05 PM CDTHail 1.75Warrenton, MOA severe storm spotter reported golf-ball size hail.
Apr 13, 4:05 PM CDTHail 1.75Warrenton, MO
Apr 13, 4:07 PM CDTHail 1Warrenton, MO
Apr 13, 4:09 PM CDTTornado F0Warrenton, MO
Apr 13, 4:40 PM CDTHail 1.75Warrenton, MOGolfball size hail was reported in Warrenton.

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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 13, 11:30 AM CDTSevere Thunderstorm WatchSPC6 hr
Apr 13, 3:45 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.9 hours before the alert went out and 268 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, Lincoln, IL at 12:00Z on 1998-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Lincoln, IL at 12:00Z on 1998-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 337 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1703 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
337 m²/s²
0-3 km storm-relative helicity
313 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

019 
WFUS1 KSTL 132053 RRA
TORSTL
MOC219-132145-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
352 PM CDT MON APR 13 1998
 
THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  445 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL MISSOURI
 
   ...WARREN COUNTY
 
AT 350 PM WEATHER SERVICE RADAR INDICATED A TORNADO 5 MILES WEST
SOUTHWEST OF WARRENTON MOVING EAST AT 30 MPH.
 
TOWNS IN THE PATH OF THIS STORM ARE WARRENTON AND WRIGHT CITY.
 
 
 
IF YOU ARE IN THE PATH OF THIS STORM...TAKE COVER IN A BASEMENT
OR INTERIOR ROOM ON THE LOWEST LEVEL.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 10:41 AM CDTSevere Thunderstorm WarningLSXFranklin49 min
Apr 13, 12:04 PM CDTSevere Thunderstorm WarningLSXSaint Francois56 min
Apr 13, 12:10 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve50 min
Apr 13, 1:42 PM CDTSevere Thunderstorm WarningLSXBoone63 min
Apr 13, 1:56 PM CDTSevere Thunderstorm WarningLSXMonroe49 min
Apr 13, 2:19 PM CDTSevere Thunderstorm WarningLSXCallaway41 min
Apr 13, 2:48 PM CDTSevere Thunderstorm WarningLSXCrawford42 min
Apr 13, 2:57 PM CDTSevere Thunderstorm WarningLSXCallaway, Montgomery48 min
Apr 13, 3:05 PM CDTTornado WarningLSXCallaway, Montgomery40 min
Apr 13, 3:09 PM CDTTornado WarningLSXCrawford51 min
Apr 13, 3:19 PM CDTSevere Thunderstorm WarningLSXWarren41 min
Apr 13, 3:24 PM CDTTornado WarningLSXWashington51 min
Apr 13, 3:48 PM CDTSevere Thunderstorm WarningLSXCrawford42 min
Apr 13, 4:11 PM CDTTornado WarningLSXJefferson, Washington49 min
Apr 13, 4:16 PM CDTTornado WarningLSXSaint Charles44 min
Apr 13, 4:21 PM CDTSevere Thunderstorm WarningLSXLincoln54 min
Apr 13, 4:40 PM CDTTornado WarningLSXSaint Charles65 min
Apr 13, 4:45 PM CDTTornado WarningLSXSainte Genevieve, Saint Francois60 min
Apr 13, 4:54 PM CDTSevere Thunderstorm WarningLSXIron, Washington66 min
Apr 13, 4:54 PM CDTSevere Thunderstorm WarningLSXReynolds66 min
Apr 13, 5:19 PM CDTSevere Thunderstorm WarningLSXFranklin41 min
Apr 13, 5:36 PM CDTTornado WarningLSXSaint Louis54 min
Apr 13, 5:42 PM CDTTornado WarningLSXSainte Genevieve63 min
Apr 13, 5:50 PM CDTTornado WarningLSXCity of Saint Louis40 min
Apr 13, 5:56 PM CDTTornado WarningLSXJefferson49 min
Apr 13, 6:19 PM CDTTornado WarningLSXIron, Reynolds41 min
Apr 13, 6:32 PM CDTTornado WarningLSXMadison58 min

Nearby

Tornado Warnings in Missouri, 1998Every tornado warning in 1998Tornadoes in 1998

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; radar from the NEXRAD Level II archive.