Alert archive / Missouri / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 236, NWS St. Louis, MO

June 18, 1998Pike County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 18, 1998, 7:09 PM CDT for Pike County, Missouri. It was in force for 46 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 18, 1998, 7:09 PM CDT (00:09 UTC)
Expired
Jun 18, 1998, 7:55 PM CDT
In force
46 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Pike County, MO

The radar

The St Louis radar (KLSX), 83 km from the middle of the area, began a volume at 00:11 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 watch it was issued in

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

IssuedProductOfficeLasted
Jun 18, 4:00 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.2 hours before the alert went out and 237 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 00:00Z on 1998-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2675 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 1998-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 115 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
2675 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
1092 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
115 m²/s²
0-3 km storm-relative helicity
219 m²/s²
Significant tornado parameter
1.7
Supercell composite
17.5

Open this sounding in Storm Lab

The text

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

531 
WUUS1 KSTL 190010 RRA
SVRSTL
MOC163-190055-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
709 PM CDT THU JUN 18 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PIKE COUNTY MISSOURI IN NORTHEASTERN MISSOURI

* UNTIL 755 PM CDT

* AT 708 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES NORTHWEST OF NEW HARTFORD... MOVING
  EAST-NORTHEAST AT 40 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  BOWLING GREEN
  CLARKSVILLE
  ST CLEMENT

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND GUSTS IN EXCESS OF 60
MPH...DAMAGING HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. MOVE
TO AN INTERIOR ROOM ON THE LOWEST FLOOR OR YOUR HOME OR BUSINESS.
HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE
WATER COVERS THE ROAD.

GLASS/TRUETT

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, Jun 18, 6:24 PM CDT, 45 minutes before
MOZ009-010-018-019-026-190130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
624 PM CDT THU JUN 18 1998

...THE SEVERE THUNDERSTORM WATCH FOR PARTS OF NORTHEAST MISSOURI HAS
BEEN CANCELLED...

THE SEVERE THUNDERSTORM WATCH FOR SCOTLAND...CLARK...KNOX...LEWIS AND
SHELBY COUNTIES IN NORTHEAST MISSOURI IS NO LONGER IN EFFECT.  THE
SEVERE THUNDERSTORMS HAVE MOVED EAST OF THE AREA.

FERRY
Special weather statement, Jun 18, 6:24 PM CDT, 45 minutes before
MOZ009-010-018-019-026-190130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
624 PM CDT THU JUN 18 1998

...THE SEVERE THUNDERSTORM WATCH FOR PARTS OF NORTHEAST MISSOURI HAS
BEEN CANCELLED...

THE SEVERE THUNDERSTORM WATCH FOR SCOTLAND...CLARK...KNOX...LEWIS AND
SHELBY COUNTIES IN NORTHEAST MISSOURI IS NO LONGER IN EFFECT.  THE
SEVERE THUNDERSTORMS HAVE MOVED EAST OF THE AREA.

FERRY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:01 PM CDTSevere Thunderstorm WarningLSXCallaway49 min
Jun 18, 7:14 PM CDTTornado WarningLSXOsage36 min
Jun 18, 7:28 PM CDTSevere Thunderstorm WarningLSXLincoln, Montgomery, Warren52 min
Jun 18, 8:45 PM CDTSevere Thunderstorm WarningLSXCrawford, Franklin, Washington50 min
Jun 18, 9:07 PM CDTSevere Thunderstorm WarningLSXJefferson48 min
Jun 18, 9:25 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve, Saint Francois35 min
Jun 18, 10:10 PM CDTTornado WarningLSXReynolds65 min
Jun 18, 10:25 PM CDTSevere Thunderstorm WarningLSXIron65 min
Jun 18, 10:59 PM CDTSevere Thunderstorm WarningLSXMadison, Saint Francois46 min
Jun 18, 11:10 PM CDTSevere Thunderstorm WarningLSXSainte Genevieve50 min
Jun 18, 11:14 PM CDTSevere Thunderstorm WarningLSXReynolds51 min

Nearby

Severe Thunderstorm Warnings in Missouri, 1998Every severe thunderstorm warning 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.