Alert archive / Louisiana / Tornado Warnings in 2003

Tornado Warning 29, NWS Shreveport, LA

May 13, 2003Jackson Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at May 13, 2003, 11:19 PM CDT for Jackson Parish, Louisiana. It was in force for 56 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 13, 2003, 11:19 PM CDT (04:19 UTC)
Expired: May 14, 2003, 12:15 AM CDT
In force: 56 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

County Jackson Parish, LA

The radar

The Shreveport radar (KSHV), 118 km from the middle of the area, began a volume at 04:20 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 13, 8:30 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
May 13, 10:45 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 4.3 hours before the alert went out and 111 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: 2326 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1006 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 401 m²/s²
Significant tornado parameter: 3.2
Supercell composite: 18.5

Open this sounding in Storm Lab

The text

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

999 
WFUS54 KSHV 140419
TORSHV
LAC049-140515-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1119 PM CDT TUE MAY 13 2003

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  JACKSON PARISH IN NORTH CENTRAL LOUISIANA

* UNTIL 1215 AM CDT

* AT 1119 PM CDT...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A TORNADO 8 MILES NORTHWEST OF JONESBORO...MOVING
  SOUTHEAST AT 30 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  JONESBORO AT 1130 PM CDT

THIS STORM WILL ALSO PRODUCE HAIL UP TO THE SIZE OF GOLFBALLS.
 
REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
FOR...
  JACKSON PARISH IN NORTH CENTRAL LOUISIANA
UNTIL 1215 AM CDT.

LAT...LON 3215 9270 3240 9275 3217 9231

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 9:34 PM CDT	Tornado Warning	SHV	Webster	26 min
May 13, 9:44 PM CDT	Tornado Warning	SHV	Claiborne	61 min
May 13, 9:48 PM CDT	Severe Thunderstorm Warning	SHV	Caddo	42 min
May 13, 10:05 PM CDT	Tornado Warning	SHV	Caddo	40 min
May 13, 10:20 PM CDT	Severe Thunderstorm Warning	SHV	Webster	40 min
May 13, 10:24 PM CDT	Severe Thunderstorm Warning	SHV	Union	51 min
May 13, 10:35 PM CDT	Severe Thunderstorm Warning	SHV	Bienville, Lincoln	55 min
May 13, 10:44 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo, Claiborne	61 min
May 13, 11:08 PM CDT	Tornado Warning	SHV	Bossier, Caddo	52 min
May 13, 11:08 PM CDT	Tornado Warning	SHV	Bienville	67 min
May 13, 11:11 PM CDT	Severe Thunderstorm Warning	SHV	Jackson	64 min
May 13, 11:28 PM CDT	Severe Thunderstorm Warning	SHV	Webster	62 min
May 13, 11:48 PM CDT	Severe Thunderstorm Warning	SHV	Bienville	57 min
May 14, 12:00 AM CDT	Tornado Warning	SHV	Caddo, De Soto, Red River	60 min
May 14, 6:02 PM CDT	Severe Thunderstorm Warning	SHV	Claiborne, Webster	58 min

Nearby

Tornado Warnings in Louisiana, 2003 Every tornado warning in 2003 Tornadoes 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.