Alert archive / Missouri / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 345, NWS St. Louis, MO

November 10, 19984 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Nov 10, 1998, 3:29 AM CST for 4 counties in Missouri. It was in force for 61 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
Nov 10, 1998, 3:29 AM CST (09:29 UTC)
Expired
Nov 10, 1998, 4:30 AM CST
In force
61 min
Issued by
NWS St. Louis, MO
Area
Whole counties

Counties City of Saint Louis, MO, Jefferson County, MO, Saint Charles County, MO, Saint Louis County, MO

The radar

The St Louis radar (KLSX), 23 km from the middle of the area, began a volume at 09:29 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
Nov 10, 3:40 AM CSTThunderstorm Wind 56O Fallon, MO
Nov 10, 3:45 AM CSTThunderstorm Wind 56St Charles, MO
Nov 10, 3:50 AM CSTThunderstorm Wind 56Countywide, MO
Nov 10, 4:00 AM CSTThunderstorm Wind 56Hillsboro, MO
Nov 10, 4:01 AM CSTThunderstorm Wind 50St Charles Arpt, 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
Nov 10, 1:15 AM CSTTornado WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 9.5 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 1998-11-10Temperature 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 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 1998-11-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 561 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
550 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
561 m²/s²
0-3 km storm-relative helicity
703 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.

589 
WUUS1 KSTL 100932 RRA
SVRSTL
ILC013-MOC099-183-189-221-510-101030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
329 AM CST TUE NOV 10 1998

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CALHOUN COUNTY IN SOUTHWESTERN ILLINOIS
  JEFFERSON COUNTY IN EAST CENTRAL MISSOURI
  ST. CHARLES COUNTY IN EAST CENTRAL MISSOURI
  ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI
  ST. LOUIS CITY IN EAST CENTRAL MISSOURI
  WASHINGTON COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 430 AM CST

* AT 326 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS QUINCY SOUTH TO LOUSIANA...TROY...
  WASHINGTON AND STEELVILLE... MOVING EAST AT 50 MPH.

* LOCATIONS THAT WILL BE AFFECTED...
  POTOSI
  HILLSBORO
  WENTZVILLE
  ST CHARLES
  HARDIN
  CHESTERFIELD
  CLAYTON



THE PRIMARY SEVERE WEATHER THREAT IS DAMAGING WINDS. MOVE QUICKLY
TO A STURDY BUILDING AND STAY AWAY FROM DOORS AND WINDOWS.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. SEVERE
THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

GKS/FG

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 10, 12:29 AM CSTSevere Thunderstorm WarningLSXOsage51 min
Nov 10, 12:47 AM CSTTornado WarningLSXOsage48 min
Nov 10, 1:06 AM CSTSevere Thunderstorm WarningLSXMontgomery49 min
Nov 10, 1:16 AM CSTSevere Thunderstorm WarningLSXLincoln, Pike49 min
Nov 10, 1:25 AM CSTTornado WarningLSXLincoln, Pike50 min
Nov 10, 1:45 AM CSTSevere Thunderstorm WarningLSXBoone, Cole, Moniteau65 min
Nov 10, 2:03 AM CSTSevere Thunderstorm WarningLSXCallaway, Osage62 min
Nov 10, 2:03 AM CSTSevere Thunderstorm WarningLSXAudrain62 min
Nov 10, 2:33 AM CSTSevere Thunderstorm WarningLSXGasconade, Montgomery62 min
Nov 10, 2:47 AM CSTSevere Thunderstorm WarningLSXPike63 min
Nov 10, 3:00 AM CSTSevere Thunderstorm WarningLSXCrawford, Franklin65 min
Nov 10, 3:00 AM CSTSevere Thunderstorm WarningLSXMarion, Ralls65 min
Nov 10, 3:00 AM CSTSevere Thunderstorm WarningLSXLincoln, Pike65 min
Nov 10, 3:00 AM CSTSevere Thunderstorm WarningLSXWarren65 min
Nov 10, 3:29 AM CSTSevere Thunderstorm WarningLSXWashington61 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.