Alert archive / Missouri / Tornado Warnings in 2003

Tornado Warning 14, NWS St. Louis, MO

May 6, 2003Washington County, Missouri

NWS St. Louis, MO issued this tornado warning at May 6, 2003, 6:46 PM CDT for Washington County, Missouri. It was in force for 59 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
May 6, 2003, 6:46 PM CDT (23:46 UTC)
Expired
May 6, 2003, 7:45 PM CDT
In force
59 min
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text

County Washington County, MO

The radar

The St Louis radar (KLSX), 75 km from the middle of the area, began a volume at 23:48 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 6, 2:15 PM CDTTornado WatchSPC5 hr
May 6, 6:35 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.8 hours before the alert went out and 290 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 12:00Z on 2003-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 34 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, Springfield, MO at 12:00Z on 2003-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 square meters per square second.1939587897Sfc1 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
34 J/kg
Mixed-layer CIN
-216 J/kg
Mixed-layer LCL
1877 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

205 
WFUS53 KLSX 062346
TORLSX
MOC221-070045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
646 PM CDT TUE MAY 6 2003

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  WASHINGTON COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 745 PM CDT

* AT 646 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 5 MILES WEST OF ANTHONIES
  MILL. THE STORM WAS MOVING EAST AT 40 MPH...AND MAY PRODUCE A
  TORNADO AT ANY TIME

* LOCATIONS IMPACTED INCLUDE...
  POTOSI
  LATTY
  SHIRLEY
  RICHWOODS
  OLD MINES
  MINERAL POINT
  CADET

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.

THIS STORM WILL ALSO PRODUCE LARGE DESTRUCTIVE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH.

LAT...LON 3822 9079 3820 9110 3775 9111 3776 9066
          3809 9065

$$

TES/RP

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 3:32 PM CDTTornado WarningLSXMoniteau43 min
May 6, 4:14 PM CDTTornado WarningLSXCole, Moniteau46 min
May 6, 4:51 PM CDTSevere Thunderstorm WarningLSXCallaway39 min
May 6, 4:54 PM CDTTornado WarningLSXCole, Osage66 min
May 6, 5:28 PM CDTTornado WarningLSXGasconade62 min
May 6, 5:51 PM CDTTornado WarningLSXFranklin54 min
May 6, 6:07 PM CDTTornado WarningLSXCrawford53 min
May 6, 6:18 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Warren42 min
May 6, 6:37 PM CDTTornado WarningLSXJefferson53 min
May 6, 6:42 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis63 min
May 6, 6:45 PM CDTTornado WarningLSXFranklin30 min

Nearby

Tornado Warnings in Missouri, 2003Every tornado warning in 2003Tornadoes in 2003

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.