Alert archive / Louisiana / Tornado Warnings in 2003

Tornado Warning 27, NWS Shreveport, LA

May 13, 2003Bossier Parish, Caddo Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at May 13, 2003, 11:08 PM CDT for Bossier Parish, Caddo Parish, Louisiana. It was in force for 52 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, 11:08 PM CDT (04:08 UTC)
Expired: May 14, 2003, 12:00 AM CDT
In force: 52 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

Counties Bossier Parish, LA, Caddo Parish, LA

The radar

The Shreveport radar (KSHV), 10 km from the middle of the area, began a volume at 04:10 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, 4.1 hours before the alert went out and 3 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.

716 
WFUS54 KSHV 140408 RRA
TORSHV
LAC015-017-140500-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1106 PM CDT TUE MAY 13 2003

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  BOSSIER PARISH IN NORTHWEST LOUISIANA
  CADDO PARISH IN NORTHWEST LOUISIANA

* UNTIL MIDNIGHT CDT

* AT 1106 PM CDT...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER
  RADAR INDICATED A THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER 
  NORTHEAST SHREVEPORT OR OVER DOWNTOWN SHREVEPORT...MOVING
  SOUTHEAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  WEST SIDE OF BOSSIER CITY AT 1115 PM CDT
  BARKSDALE AIR FORCE BASE AT 1115 PM CDT

IN ADDITION TO THE THREAT OF A TORNADO...LARGE HAIL AND DAMAGING WIND
CAN BE EXPECTED. GO TO A SAFE PLACE...NOW

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A CULVERT...DITCH...OR
LOW SPOT...AND COVER YOUR HEAD.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
FOR...
  BOSSIER PARISH IN NORTHWEST LOUISIANA
  CADDO PARISH IN NORTHWEST LOUISIANA
UNTIL MIDNIGHT CDT.

LAT...LON 3263 9375 3252 9392 3234 9390 3239 9348

$$

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	Bienville	67 min
May 13, 11:11 PM CDT	Severe Thunderstorm Warning	SHV	Jackson	64 min
May 13, 11:19 PM CDT	Tornado Warning	SHV	Jackson	56 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.