Alert archive / Missouri / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 145, NWS St. Louis, MO

May 14, 2003Madison County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at May 14, 2003, 9:03 PM CDT for Madison County, Missouri. It was in force for 57 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 14, 2003, 9:03 PM CDT (02:03 UTC)
Expired: May 14, 2003, 10:00 PM CDT
In force: 57 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Madison County, MO

The radar

The St Louis radar (KLSX), 135 km from the middle of the area, began a volume at 02:04 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 14, 8:30 PM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Little Rock, AR (KLZK), launched 00:00Z, 2.1 hours before the alert went out and 301 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: 136 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 898 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 33 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.

306 
WUUS53 KLSX 150203
SVRLSX
MOC123-150300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
859 PM CDT WED MAY 14 2003

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MADISON COUNTY IN SOUTHEAST MISSOURI

* UNTIL 1000 PM CDT

* AT 859 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LINE OF SEVERE THUNDERSTORMS FROM 15 MILES NORTH OF FREDERICKTOWN TO
IRONTON AND THEN SOUTHWEST TO 10 MILES NORTH OF ELLINGTON. THESE 
STORMS ARE MOVING TO THE EAST AT 35 MPH.  THE PRIMARY THREAT FROM 
THIS STORM WILL BE DAMAGING HAIL.

* LOCATIONS IMPACTED INCLUDE...MINE LA MOTTE...FREDERICKTOWN...AND
MOST OF MADISON COUNTY

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.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A STRONG BUILDING. DO NOT
TAKE COVER UNDERNEATH TREES IF BOATING...GET OFF OF THE WATER AND
MOVE TO A SAFE SHELTER NOW IF CAMPING...ABANDON TENTS FOR A STURDY
STRUCTURE. AVOID LOW LYING AREAS...CREEK BEDS...AND LOW WATER
CROSSINGS AS THESE CAN FLOOD QUICKY.

LAT...LON 3765 9054 3732 9055 3732 9000 3767 8991

$$
PEDIGO

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 7:24 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Pike, Ralls	36 min
May 14, 8:06 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	39 min
May 14, 8:19 PM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	56 min
May 14, 8:46 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway	44 min
May 14, 9:16 PM CDT	Severe Thunderstorm Warning	LSX	Iron	44 min
May 14, 9:22 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	23 min
May 14, 9:37 PM CDT	Severe Thunderstorm Warning	LSX	Reynolds	23 min
May 14, 10:12 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	33 min
May 14, 11:57 PM CDT	Flash Flood Warning	LSX	Iron, Madison	5 hr

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.