Alert archive / Louisiana / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 35, NWS Lake Charles, LA

April 7, 2003Vermilion Parish, Louisiana

NWS Lake Charles, LA issued this severe thunderstorm warning at Apr 7, 2003, 5:03 PM CDT for Vermilion Parish, Louisiana. It was in force for 27 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: Apr 7, 2003, 5:03 PM CDT (22:03 UTC)
Expired: Apr 7, 2003, 5:30 PM CDT
In force: 27 min
Issued by: NWS Lake Charles, LA
Area: Counties, with a storm outline in the text

County Vermilion Parish, LA

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 7, 3:40 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 10.1 hours before the alert went out and 98 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: 1791 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 518 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -64 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: -0.6
Supercell composite: -2.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KLCH 072203
SVRLCH
LAC113-072230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LAKE CHARLES LA
503 PM CDT MON APR 7 2003

THE NATIONAL WEATHER SERVICE IN LAKE CHARLES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  VERMILION PARISH IN SOUTHWEST LOUISIANA

* UNTIL 530 PM CDT

* AT 500 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES SOUTHWEST OF FORKED ISLAND...MOVING
  EAST AT 35 MPH.

* THIS STORM WILL BE NEAR...
  INTRACOASTAL CITY BY 520 PM CDT
  ABBEVILLE AND HENRY BY 525 PM CDT

THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY LARGE HAIL WHICH COULD
CAUSE SIGNIFICANT DAMAGE TO PROPERTY.

CALL 337-477-5285 TO REPORT SEVERE WEATHER TO THE WEATHER SERVICE.

LAT...LON 2984 9245 2966 9241 2972 9195 2994 9198

$$

LGE

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 Lake Charles, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 7, 2:25 PM CDT, 2 hours 38 minutes earlier.

Area forecast discussion, Apr 7, 2:25 PM CDT, 2 hours 38 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LAKE CHARLES LA
225 PM CDT MON APR 7 2003

LINE OF SVR TRW CONTINUES FROM NEAR HOUSTON ALONG THE CST OF SW LA
THEN NE ACROSS ACADIANA TO THE FLORIDA PARISHES AND SRN MS. ACTIVITY
CONTINUES TO FOCUS ON SFC PRE-FNTL TROF W/ UPR SUPPORT FROM MINOR
S/WV & RRQ OF H2/H3 JET. LINE IS MOVING VERY VERY SLOWLY NWD...AND
W/ ECHOES TRAINING ALONG IT SHOULD START SEEING REPORTS OF FLOODING
COMING IN. NCEP AREA OF EXCESSIVE RAINFALL SITS OVER NRN ZONES...BUT
SRN ZONES LOOK UNDER THE GUN ATTM. WILL BE ISSUING FLASH FLOOD WATCH
TO RUN THRU TNGT FOR I-10 CORRIDOR S TO THE CST.

ADDITIONAL SUPPORT COMES TNGT IN FORM OF MAIN SFC FNT WHICH
CURRENTLY SITS ACROSS NERN TX/NRN LA/CNTL MS...AS WELL AS S/WV
MOVING OUT OF NRN MEX. FNT PROGGED TO MOVE INTO NRN ZONES TOWARD
MIDNIGHT...MOVING OUT OF SERN ZONES AFTER SUNRISE. MODERATE
INSTABILITY & HIGH CAPE AIR PROGGED TO REMAIN OVER THE AREA THRU
FROPA...AS WELL AS RRQ OF UPR JET. THEREFORE SVR WX THREAT WILL
EXPAND TO COVER NRN ZONES TNGT...AND NEXT ROUND IN THE MORNING FOR
THE S. HOW MUCH EFFECT ONGOING ACTIVITY HAS ON FUTURE TRW UP NORTH
REMAINS TO BE SEEN. WILL LET EVE SHIFT LOOK AT ONGOING CONDITIONS &
FURTHER DATA THEN MAKE DECISION ON ANY FLOOD WATCHES N OF I-10.

RAIN MAY LINGER BRIEFLY BEHIND THE FNT...BUT STRONG LATE SPRING HI
PRES SHOULD HAVE ENOUGH PUSH TO SHOVE PRECIP OUT OF THE AREA BY
EARLY AFTN FOR THE SE. BEYOND THEN...REST OF WEEK LOOKS GOOD W/ COOL
TEMPS EXPECTED.

.PRELIMINARY POINT TEMPS/POPS...

KLCH 62 69 43 63 39 / 80 40 00 00 00
KBPT 61 68 42 65 38 / 80 30 00 00 00
KAEX 58 66 40 60 36 / 80 20 00 00 00
KLFT 64 70 43 62 39 / 80 60 00 00 00

.LCH...SVR TRW WATCH 112 TIL 4 PM ALL ZONES EXCEPT TYLER...VERNON...
         AND RAPIDES
       FLASH FLOOD WATCH TONIGHT INTERSTATE 10 SOUTH.

LGE

Hazardous weather outlook, Apr 7, 5:20 AM CDT, 11 hours 43 minutes before

LAZ027>033-041>045-051>055-TXZ180>182-201-215-216-081102-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LAKE CHARLES LA
520 AM CDT MON APR 7 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS...CENTRAL...
SOUTH-CENTRAL AND SOUTHWEST LOUISIANA.

.DAY ONE...TODAY AND TONIGHT...
SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
AFTERNOON...BECOMING MORE WIDESPREAD OVERNIGHT...AS A COLD FRONT
ADVANCES AND MOVES ACROSS THE REGION. WITH CONSIDERABLE INSTABILITY
IN PLACE AND FAVORABLE UPPER AIR SUPPORT...A FEW OF THE
THUNDERSTORMS MAY BECOME SEVERE.

.DAY TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...
THE COLD FRONT WILL MOVE SOUTHEAST OF THE REGION EARLY TUESDAY
WITH RAINS DIMINISHING THROUGH THE DAY. FAIR WEATHER HIGH
PRESSURE WILL FOLLOW AND REMAIN IN PLACE THROUGH THE REMAINDER OF
THE WEEK.

.SPOTTER INFORMATION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS MAY BE REQUIRED THIS AFTERNOON AND
TONIGHT.

In the hours before

Local storm report, Apr 7, 4:12 PM CDT, 51 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED FOR TIME OF OCCURENCE
NATIONAL WEATHER SERVICE LAKE CHARLES LA
0412 PM CDT MON APR 07 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0320 PM    ABBEVILLE                 LA   1.75 IN HAIL
04/07/03   VERMILION                      PUBLIC REPORTED MULTIPLE
                                          CAR WINDOWS BROKEN DUE TO
                                          GOLF BALL-SIZED HAIL.

0232 PM    JEANERETTE                LA   1.75 IN HAIL
04/07/03   IBERIA                         PUBLIC REPORTED GOLF
                                          BALL-SIZED HAIL AND SHED
                                          BLOWN OVER.

ITO

Local storm report, Apr 7, 4:13 PM CDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
0413 PM CDT MON APR 07 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0340 PM    BROUSSARD                 LA   WIND DAMAGE
04/07/03   LAFAYETTE                      PUBLIC REPORTED WIND
                                          DAMAGE TO THE LUCKY LADY
                                          CASINO.

ITO

Local storm report, Apr 7, 4:16 PM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
0416 PM CDT MON APR 07 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0320 PM    STEPHENSVILLE             LA   0.75 IN HAIL
04/07/03   ST. MARTIN                     PUBLIC REPORTED DIME-SIZED
                                          HAIL.

ITO

Local storm report, Apr 7, 4:46 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
0446 PM CDT MON APR 07 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0425 PM    JEANERETTE                LA   0.88 IN HAIL
04/07/03   IBERIA                         TREE BRANCHES DOWN

ITO

Local storm report, Apr 7, 4:53 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
0453 PM CDT MON APR 07 2003

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0430 PM    2 N BALDWIN               LA   0.75 IN HAIL
04/07/03   ST. MARY

ITO

Special weather statement, Apr 7, 4:54 PM CDT, 9 minutes before

LAZ054-072225-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LAKE CHARLES LA
454 PM CDT MON APR 7 2003

...SEVERE THUNDERSTORM WARNING FOR ST. MARY PARISH CANCELED...

THE SEVERE THUNDERSTORM WHICH WAS MOVING ACROSS UPPER ST. MARY
PARISH HAS MOVED EAST AND OUT OF THE PARISH.  THEREFORE THE
WARNING HAS BEEN CANCELED.

LGE

The office that day

Everything else NWS Lake Charles, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 7, 9:12 AM CDT	Special Marine Warning	LCH		63 min
Apr 7, 9:56 AM CDT	Severe Thunderstorm Warning	LCH	Cameron	34 min
Apr 7, 10:13 AM CDT	Special Marine Warning	LCH		32 min
Apr 7, 10:46 AM CDT	Special Marine Warning	LCH		59 min
Apr 7, 10:50 AM CDT	Severe Thunderstorm Warning	LCH	Vermilion	40 min
Apr 7, 10:58 AM CDT	Severe Thunderstorm Warning	LCH	Acadia, Lafayette, Vermilion	62 min
Apr 7, 11:41 AM CDT	Special Marine Warning	LCH		64 min
Apr 7, 11:41 AM CDT	Special Marine Warning	LCH		64 min
Apr 7, 11:47 AM CDT	Severe Thunderstorm Warning	LCH	Iberia	58 min
Apr 7, 12:29 PM CDT	Severe Thunderstorm Warning	LCH	Cameron, Vermilion	61 min
Apr 7, 12:49 PM CDT	Special Marine Warning	LCH		56 min
Apr 7, 12:49 PM CDT	Special Marine Warning	LCH		56 min
Apr 7, 1:23 PM CDT	Severe Thunderstorm Warning	LCH	Cameron	52 min
Apr 7, 1:24 PM CDT	Severe Thunderstorm Warning	LCH	Vermilion	66 min
Apr 7, 1:49 PM CDT	Special Marine Warning	LCH		56 min
Apr 7, 2:13 PM CDT	Severe Thunderstorm Warning	LCH	Iberia, St. Mary	62 min
Apr 7, 2:28 PM CDT	Severe Thunderstorm Warning	LCH	Cameron, Vermilion	62 min
Apr 7, 3:09 PM CDT	Severe Thunderstorm Warning	LCH	Lafayette	66 min
Apr 7, 3:12 PM CDT	Severe Thunderstorm Warning	LCH	Saint Martin	63 min
Apr 7, 3:20 PM CDT	Special Marine Warning	LCH		55 min
Apr 7, 3:20 PM CDT	Special Marine Warning	LCH		55 min
Apr 7, 3:28 PM CDT	Severe Thunderstorm Warning	LCH	Cameron	62 min
Apr 7, 3:31 PM CDT	Severe Thunderstorm Warning	LCH	Iberia, Saint Martin	59 min
Apr 7, 4:34 PM CDT	Severe Thunderstorm Warning	LCH	St. Mary	26 min
Apr 7, 5:14 PM CDT	Severe Thunderstorm Warning	LCH	Iberia, Saint Martin	46 min
Apr 7, 5:34 PM CDT	Severe Thunderstorm Warning	LCH	Cameron	26 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 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.