Alert archive / Missouri / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 62, NWS St. Louis, MO

May 4, 2003Gasconade County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 4, 2003, 9:14 PM CDT for Gasconade County, Missouri. It was in force for 31 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 4, 2003, 9:14 PM CDT (02:14 UTC)
Expired: May 4, 2003, 9:45 PM CDT
In force: 31 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Gasconade County, MO

The radar

The St Louis radar (KLSX), 87 km from the middle of the area, began a volume at 02:16 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.

Issued	Product	Office	Lasted
May 4, 5:25 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.2 hours before the alert went out and 254 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2099 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 756 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: 321 m²/s²
0-3 km storm-relative helicity: 341 m²/s²
Significant tornado parameter: 4.6
Supercell composite: 15.8

Open this sounding in Storm Lab

The text

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

780 
WUUS53 KLSX 050214
SVRLSX
MOC073-050245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
914 PM CDT SUN MAY 4 2003

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN GASCONADE COUNTY IN EAST CENTRAL MISSOURI

* UNTIL 945 PM CDT

* AT 914 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 9 MILES SOUTHWEST OF BLAND...MOVING NORTHEAST
  AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  OWENSVILLE
  ROSEBUD

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.

LAT...LON 3831 9168 3814 9163 3821 9138 3850 9138
          3857 9164

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 10:40 PM CDT	Tornado Warning	LSX	Crawford	50 min
May 4, 11:09 PM CDT	Tornado Warning	LSX	Iron, Washington	51 min
May 4, 11:43 PM CDT	Tornado Warning	LSX	Saint Francois	47 min
May 4, 11:58 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	47 min
May 5, 2:56 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	49 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2003 Every severe thunderstorm warning 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.