Alert archive / Missouri / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 133, NWS St. Louis, MO

May 22, 1998Scotland County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 22, 1998, 12:40 AM CDT for Scotland County, Missouri. It was in force for 60 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
May 22, 1998, 12:40 AM CDT (05:40 UTC)
Expired
May 22, 1998, 1:40 AM CDT
In force
60 min
Issued by
NWS St. Louis, MO
Area
Whole counties

County Scotland County, MO

The radar

The Quad Cities radar (KDVN), 184 km from the middle of the area, began a volume at 05:43 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
May 22, 1:00 AM CDTThunderstorm Wind 53Memphis, MO

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
May 21, 11:00 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 5.7 hours before the alert went out and 190 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 00:00Z on 1998-05-22Temperature 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, Davenport, at 00:00Z on 1998-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -65 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
2074 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-65 m²/s²
0-3 km storm-relative helicity
91 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.

000 
TTAA00 KSTL 220540 RRA
SVRSTL
MOC199-220640-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1240 AM CDT FRI MAY 22 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 140 AM CDT

* AT 1239 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED A SEVERE THUNDERSTORM JUST ENTERING THE NORTHWEST PART
OF SCOTLAND COUNTY... MOVING SOUTHEAST AT 30 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  HITT
  MEMPHIS
  BIBLE GROVE

THIS STORM HAS A HISTORY OF DAMAGING WINDS. MOVE QUICKLY TO A
STURDY BUILDING AND STAY AWAY FROM DOORS AND WINDOWS.

CA/AMS

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, May 21, 8:10 PM CDT, 4 hours 30 minutes before
MOZ072>075-084-085-099-220145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
810 PM CDT THU MAY 21 1998

...SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR A PORTION OF
EAST CENTRAL AND SOUTHEAST MISSOURI...

THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES...

IN MISSOURI...CRAWFORD...WASHINGTON...ST. FRANCOIS...STE. GENEVIEVE
...REYNOLDS...IRON...AND MADISON

SHOWERS AND THUNDERSTORMS WILL END OVER THIS AREA THIS EVENING.
MORE SHOWERS AND THUNDERSTORMS ARE LIKELY AGAIN OVERNIGHT.

AMS
Special weather statement, May 21, 8:10 PM CDT, 4 hours 30 minutes before
MOZ072>075-084-085-099-220145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
810 PM CDT THU MAY 21 1998

...SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR A PORTION OF
EAST CENTRAL AND SOUTHEAST MISSOURI...

THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING
COUNTIES...

IN MISSOURI...CRAWFORD...WASHINGTON...ST. FRANCOIS...STE. GENEVIEVE
...REYNOLDS...IRON...AND MADISON

SHOWERS AND THUNDERSTORMS WILL END OVER THIS AREA THIS EVENING.
MORE SHOWERS AND THUNDERSTORMS ARE LIKELY AGAIN OVERNIGHT.

AMS

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 7:12 PM CDTSevere Thunderstorm WarningLSXMadison48 min
May 22, 1:04 AM CDTSevere Thunderstorm WarningLSXKnox61 min
May 22, 1:20 AM CDTSevere Thunderstorm WarningLSXLincoln65 min
May 22, 1:27 AM CDTSevere Thunderstorm WarningLSXClark, Lewis63 min
May 22, 1:52 AM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis63 min
May 22, 1:57 AM CDTSevere Thunderstorm WarningLSXMarion, Shelby63 min
May 22, 2:34 AM CDTSevere Thunderstorm WarningLSXRalls61 min
May 22, 2:48 AM CDTSevere Thunderstorm WarningLSXPike62 min
May 22, 5:01 PM CDTSevere Thunderstorm WarningLSXOsage49 min
May 22, 5:25 PM CDTSevere Thunderstorm WarningLSXGasconade45 min
May 22, 5:55 PM CDTSevere Thunderstorm WarningLSXCrawford50 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.