Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 438, NWS St. Louis, MO

August 23, 2000Saint Louis County, City of Saint Louis, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Aug 23, 2000, 11:40 PM CDT for Saint Louis County, City of Saint Louis, Missouri. It was in force for 65 min. 5 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued
Aug 23, 2000, 11:40 PM CDT (04:40 UTC)
Expired
Aug 24, 2000, 12:45 AM CDT
In force
65 min
Issued by
NWS St. Louis, MO
Area
Whole counties; the outline is the Mesonet’s reconstruction

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

What was reported inside it

TimeReportWhereRemark
Aug 24, 12:05 AM CDTThunderstorm Wind 55 EChesterfield, MO
Aug 24, 12:05 AM CDTThunderstorm Wind 55 EChesterfield, MO
Aug 24, 12:10 AM CDTThunderstorm Wind 55 EManchester, MO
Aug 24, 12:15 AM CDTThunderstorm Wind 55 ESt Louis, MOAmateur radio spotters reported trees down in the St. Louis Hills area.
Aug 24, 12:20 AM CDTThunderstorm Wind 55 EAffton, MOAmateur radio spotters reported trees down near the intersection of Sappinton and Concord Roads.

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
Aug 23, 9:45 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 4.7 hours before the alert went out and 224 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 2000-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1082 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 2000-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.193958Sfc1 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
1082 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
1541 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLSX 240443
SVRSTL
MOC189-510-240545-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1140 PM CDT WED AUG 23 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ST. LOUIS COUNTY IN EAST CENTRAL MISSOURI
  ST. LOUIS CITY IN EAST CENTRAL MISSOURI

* UNTIL 1245 AM CDT

* AT 1140 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A LINE OF SEVERE THUNDERSTORMS FROM ELSBERRY TO NEW MELLE...
  MOVING SOUTHEAST AT 50 MPH.

* LOCATIONS IN THE PATH...
  ST LOUIS
  CHESTERFIELD
  CLARKSON VALLEY
  BALLWIN
  MANCHESTER
  ELLISVILLE
  TOWN AND COUNTRY
  VALLEY PARK
  DES 6PERES
  KIRKWOOD
  FENTON
  CLAYTON

THIS STORM HAS A HISTORY OF DAMAGING WINDS. TAKE SHELTER IN A STURDY
BUILDING IMMEDIATELY.

LAT...LON 3888 9029 3877 9043 3865 9068 3849 9075
          3841 9032 3862 9021 3881 9017

GKS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 9:52 PM CDTSevere Thunderstorm WarningLSXMarion, Shelby38 min
Aug 23, 10:03 PM CDTSevere Thunderstorm WarningLSXAudrain, Monroe42 min
Aug 23, 10:03 PM CDTSevere Thunderstorm WarningLSXBoone42 min
Aug 23, 10:04 PM CDTSevere Thunderstorm WarningLSXRalls41 min
Aug 23, 10:36 PM CDTSevere Thunderstorm WarningLSXAudrain39 min
Aug 23, 10:40 PM CDTSevere Thunderstorm WarningLSXPike50 min
Aug 23, 10:45 PM CDTSevere Thunderstorm WarningLSXRalls30 min
Aug 23, 10:46 PM CDTSevere Thunderstorm WarningLSXMontgomery59 min
Aug 23, 10:58 PM CDTSevere Thunderstorm WarningLSXLincoln62 min
Aug 23, 11:02 PM CDTTornado WarningLSXMontgomery28 min
Aug 23, 11:07 PM CDTSevere Thunderstorm WarningLSXWarren53 min
Aug 23, 11:21 PM CDTSevere Thunderstorm WarningLSXSaint Charles54 min
Aug 23, 11:45 PM CDTSevere Thunderstorm WarningLSXFranklin45 min
Aug 23, 11:57 PM CDTSevere Thunderstorm WarningLSXJefferson63 min
Aug 24, 1:36 AM CDTFlash Flood WarningLSXAudrain, Montgomery5 hr
Aug 24, 2:28 AM CDTFlash Flood WarningLSXFranklin, Warren5 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2000Every severe thunderstorm warning in 2000

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.