Alert archive / Missouri / Tornado Warnings in 1998

Tornado Warning 75, NWS St. Louis, MO

June 14, 1998Lewis County, Missouri

NWS St. Louis, MO issued this tornado warning at Jun 14, 1998, 3:40 PM CDT for Lewis County, Missouri. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 14, 1998, 3:40 PM CDT (20:40 UTC)
Expired
Jun 14, 1998, 4:30 PM CDT
In force
50 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Lewis County, MO

The radar

The St Louis radar (KLSX), 179 km from the middle of the area, began a volume at 20:39 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.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.7 hours before the alert went out and 198 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, Davenport, at 12:00Z on 1998-06-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 1998-06-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
8 J/kg
Mixed-layer CIN
-44 J/kg
Mixed-layer LCL
922 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
73 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.

322 
WFUS1 KSTL 142039 RRA
TORSTL
MOC111-142130-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
340 PM CDT SUN JUN 14 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  LEWIS COUNTY IN NORTHEASTERN MISSOURI

* UNTIL 430 PM CDT

* AT AT 338 PM... SEVERE STORM SPOTTERS INDICATED A TORNADO 5 MILES
  SOUTHWEST OF MONTICELLO... MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IN THE PATH...
  MONTICELLO

A TORNADO WAS REPORTED ON THE GROUND NEAR LEWISTOWN.

A TORNADO IS ON THE GROUND IN YOU ARE IN THE PATH...MOVE
IMMEDIATELY TO A SUBSTANTIAL STRUCTURE NOW FOR PROTECTION. A
BASEMENT OFFERS THE BEST SHELTER. YOUR LIFE AND THE LIVES OF THOSE
AROUND YOU MAY DEPEND ON YOUR ACTIONS.

AMS/DF

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 3:33 AM CDTSevere Thunderstorm WarningLSXMonroe32 min
Jun 14, 4:46 AM CDTSevere Thunderstorm WarningLSXAudrain, Boone, Callaway49 min
Jun 14, 5:59 AM CDTSevere Thunderstorm WarningLSXMontgomery31 min
Jun 14, 6:17 AM CDTSevere Thunderstorm WarningLSXLincoln, Warren48 min
Jun 14, 7:13 AM CDTSevere Thunderstorm WarningLSXSaint Charles47 min
Jun 14, 2:15 PM CDTTornado WarningLSXAudrain15 min
Jun 14, 2:18 PM CDTSevere Thunderstorm WarningLSXKnox32 min
Jun 14, 2:29 PM CDTTornado WarningLSXPike36 min
Jun 14, 2:39 PM CDTSevere Thunderstorm WarningLSXRalls46 min
Jun 14, 2:57 PM CDTTornado WarningLSXScotland33 min
Jun 14, 2:57 PM CDTTornado WarningLSXClark, Scotland38 min
Jun 14, 3:05 PM CDTTornado WarningLSXPike35 min
Jun 14, 3:29 PM CDTTornado WarningLSXClark46 min
Jun 14, 3:35 PM CDTTornado WarningLSXPike65 min
Jun 14, 3:43 PM CDTSevere Thunderstorm WarningLSXMarion52 min
Jun 14, 4:14 PM CDTTornado WarningLSXClark31 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.