Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 430, NWS St. Louis, MO

August 23, 2000Ralls County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Aug 23, 2000, 10:45 PM CDT for Ralls County, Missouri. It was in force for 30 min. 1 report 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, 10:45 PM CDT (03:45 UTC)
Expired
Aug 23, 2000, 11:15 PM CDT
In force
30 min
Issued by
NWS St. Louis, MO
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Ralls County, MO

What was reported inside it

TimeReportWhereRemark
Aug 23, 10:50 PM CDTThunderstorm Wind 60 EVandalia, MOAmateur radio spotters reported trees and power lines downed by near 70 mph wind gusts.

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

Davenport, (KDVN), launched 00:00Z, 3.8 hours before the alert went out and 262 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 2000-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 996 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 00:00Z on 2000-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 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
996 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
1022 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.3
Supercell composite
4.9

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLSX 240347
SVRSTL
MOC173-240415-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1045 PM CDT WED AUG 23 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN RALLS COUNTY IN NORTHEAST MISSOURI

* UNTIL 1115 PM CDT

* AT 1045 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  CLUSTER OF SEVERE THUNDERSTORMS OVER SOUTHERN RALLS COUNTY..SOUTH AND
  SOUTHEAST OF PERRY...MOVING EAST AT 30 MPH.

THIS IS A DANGEROUS STORM! WINDS FROM A SEVERE THUNDERSTORM CAN
PRODUCE DAMAGE SIMILAR TO THAT OF A TORNADO...AND VERY LARGE HAIL CAN
CAUSE SERIOUS INJURY AND SEVERE PROPERTY DAMA<GE. MOVE TO AN INTERIOR
ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS...AND STAY AWAY
FROM WINDOWS!

LAT...LON 3947 9175 3932 9172 3931 9142 3952 9135

TRUETT

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, 10:46 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, 11:40 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis65 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.