Alert archive / Missouri / Tornado Warnings in 2002

Tornado Warning 25, NWS St. Louis, MO

August 19, 2002Reynolds County, Missouri

NWS St. Louis, MO issued this tornado warning at Aug 19, 2002, 9:30 PM CDT for Reynolds County, Missouri. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 19, 2002, 9:30 PM CDT (02:30 UTC)
Expired
Aug 19, 2002, 10:00 PM CDT
In force
30 min
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text

County Reynolds County, MO

The radar

The St Louis radar (KLSX), 134 km from the middle of the area, began a volume at 02:31 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.5 hours before the alert went out and 240 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, Springfield, MO at 00:00Z on 2002-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3042 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, Springfield, MO at 00:00Z on 2002-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939Sfc1 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
3042 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1610 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
16 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.

446 
WFUS53 KLSX 200230
TORSTL
MOC179-200300-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
930 PM CDT MON AUG 19 2002

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME NORTHWEST REYNOLDS COUNTY IN SOUTHEAST MISSOURI

* UNTIL 1000 PM CDT

* AT 930 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR EXTREME NORTHWESTERN
  REYNOLDS COUNTY. THE THUNDERSTORM WAS NEARLY STATIONARY...AND MAY
  PRODUCE A TORNADO AT ANY TIME

* LOCATIONS IN THE PATH...
RURAL NORTHWESTERN REYNOLDS COUNTY...WEST OF HIGHWAY KK

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW MOVE TO A
BASEMENT...UNDERGROUND STORM SHELTER...OR AN INTERIOR ROOM OR HALLWAY
ON THE LOWEST LEVEL OF A STURDY BUILDING.

LAT...LON 3760 9114 3761 9127 3758 9132 3751 9131
          3751 9113

TRUETT/SPRIGGS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 9:02 PM CDTSevere Thunderstorm WarningLSX43 min
Aug 19, 9:23 PM CDTFlash Flood WarningLSXIron, Reynolds3 hr
Aug 19, 10:24 PM CDTSevere Thunderstorm WarningLSX51 min
Aug 20, 12:02 AM CDTSevere Thunderstorm WarningLSX43 min
Aug 20, 1:32 AM CDTFlash Flood WarningLSXBoone, Callaway, Cole, Osage6 hr

Nearby

Tornado Warnings in Missouri, 2002Every tornado warning in 2002Tornadoes in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.