Alert archive / Missouri / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 425, NWS St. Louis, MO

August 23, 2000Boone County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Aug 23, 2000, 10:03 PM CDT for Boone County, Missouri. It was in force for 42 min. 7 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, 10:03 PM CDT (03:03 UTC)
Expired
Aug 23, 2000, 10:45 PM CDT
In force
42 min
Issued by
NWS St. Louis, MO
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Boone County, MO

What was reported inside it

TimeReportWhereRemark
Aug 23, 10:05 PM CDTThunderstorm Wind 51 ESturgeon, MO
Aug 23, 10:10 PM CDTThunderstorm Wind 51 ECentralia, MO
Aug 23, 10:15 PM CDTThunderstorm Wind 51 ECentralia, MO
Aug 23, 10:25 PM CDTThunderstorm Wind 60 EMexico, MO
Aug 23, 10:28 PM CDTThunderstorm Wind 60 EMexico, MO
Aug 23, 10:30 PM CDTThunderstorm Wind 60 EMexico, MO
Aug 23, 10:30 PM CDTThunderstorm Wind 60 EParis, MOAmateur radio spotters reported trees down blocking Highway 15 south of Paris.

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, 3.1 hours before the alert went out and 281 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 240304
SVRSTL
MOC007-019-137-240345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1003 PM CDT WED AUG 23 2000

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN AUDRAIN COUNTY IN CENTRAL MISSOURI
  NORTHERN BOONE COUNTY IN CENTRAL MISSOURI
  MONROE COUNTY IN NORTHEAST MISSOURI

* UNTIL 1045 PM CDT

* AT 1003 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES WEST OF MADISON...MOVING EAST 
SOUTHEAST AT 45 MPH.

* LOCATIONS IN THE PATH...
  MADISON
  PARIS
  SANTA FE
  CENTRALIA
  HARRISBURG 

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

THE PRIMARY THREAT POSED BY THIS STORM IS DAMAGING WINDS. MOVE
QUICKLY TO THE INTERIOR PORTION OF A STURDY SHELTER...AND STAY AWAY
FROM OUTSIDE WALLS AND WINDOWS.

LAT...LON 3965 9234 3908 9252 3906 9176 3966 9177

RP/GKS

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.

NWS St. Louis, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 23, 3:47 PM CDT, 6 hours 16 minutes earlier.

Area forecast discussion, Aug 23, 3:47 PM CDT, 6 hours 16 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE ST LOUIS MO
330 PM WED AUG 23 2000

CONVECTION HAS BGN TO DVLP THIS AFTN IN NERN MO AND S CNTRL MO ALNG
OLD OUTFLOW BOUNDARIES S OF STNRY FNT EXTDG FM SRN NEBRASKA ENE THRU
NRN IL.  WKST CIN ACRS SRN MO AND A SMALL PORTION OF NERN MO WITH
CAPE OVR 4000 J/KG OVR PARTS OF NERN MO.  CONVECTION ACRS SRN MO
SHOULD BE DIURNAL...WKNG JUST AFT SUNSET...BUT ACTIVITY SHOULD BCM
MORE ORGANIZED ALONG STATIONARY FNT AS SHRTWV OVR NWRN IA ERN NE
DROPS SEWD THRU ERN MO IL LTR TGT.  MDLS DEPICT AN AREA OF UPR
DIVERGENCE ACRS ERN MO CNTRL SRN IL TGT IN RGT ENTRANCE REGION OF
ULJ STRK MOVG THRU OH VLY.  NGM...ETA AND MESOETA FAIRLY SIMILIAR
WITH HIGHEST QPF OVR NERN MO THIS EVNG DROPPING SEWD ALNG
MISSISSIPPI RVR.  18Z MESOETA SHOW INDICATIONS OF AN MCS WITH
CONVECTIVELY INDUCED VORT MAX AND OUTFLOW BOUNDARY...BUBBLE HI MOVG
SWD THRU ERN MO LT TGT.  WL INCRS POPS TGT WITH SEWD MOVG MCS
LIKELY.  PCPN CHANCES WL LIKELY SHIFT S THU AFTN AND EVNG WITH MCV
AND OUFLOW BOUNDARY...ALTHOUGH STNRY FNT WL PROBABLY ONLY DROP AS
FAR S AS NRN MO.  TEMPS SHOULD BE A COUPLE OF DGRS COOLER THU WITH
MRNG PCPN AND MCS CLOUD DEBRIS +INTO THE AFTN.

.STL...NONE
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, 10:04 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, 11:40 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.