Alert archive / Louisiana / Tornado Warnings in 2003

Tornado Warning 36, NWS Shreveport, LA

May 17, 2003Union Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at May 17, 2003, 3:35 AM CDT for Union Parish, Louisiana. It was in force for 25 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 17, 2003, 3:35 AM CDT (08:35 UTC)
Expired: May 17, 2003, 4:00 AM CDT
In force: 25 min
Issued by: NWS Shreveport, LA
Area: Counties, with a storm outline in the text

County Union Parish, LA

The radar

The Shreveport radar (KSHV), 137 km from the middle of the area, began a volume at 08:36 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 nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 8.6 hours before the alert went out and 128 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: 1901 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1440 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 218 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 15.5

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KSHV 170835
TORSHV
LAC111-170900-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
333 AM CDT SAT MAY 17 2003

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

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

* UNTIL 400 AM CDT

* AT 333 AM CDT...LAW ENFORCEMENT REPORTED A TORNADO JUST NORTH OF 
DUBACH...JUST CROSSING THE UNION PARISH LINE....MOVING NORTHEAST AT 30 
MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  FARMERVILLE AT 350 AM CDT

THIS THUNDERSTORM CAN PRODUCE A TORNADO THAT IS OBSCURED BY RAIN...
AND DIFFICULT TO SEE.

REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
FOR...
  UNION PARISH IN NORTH CENTRAL LOUISIANA
UNTIL 400 AM CDT.

LAT...LON 3278 9264 3277 9247 3296 9206 3299 9250

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 7:21 PM CDT	Severe Thunderstorm Warning	SHV	Caddo	84 min
May 16, 7:42 PM CDT	Severe Thunderstorm Warning	SHV	Bossier	93 min
May 16, 8:39 PM CDT	Severe Thunderstorm Warning	SHV	Caddo	66 min
May 16, 9:09 PM CDT	Severe Thunderstorm Warning	SHV	Webster	51 min
May 16, 9:29 PM CDT	Severe Thunderstorm Warning	SHV	Claiborne	61 min
May 16, 9:44 PM CDT	Severe Thunderstorm Warning	SHV	Bossier	31 min
May 16, 9:46 PM CDT	Severe Thunderstorm Warning	SHV	Bossier	29 min
May 16, 9:50 PM CDT	Severe Thunderstorm Warning	SHV	Bossier	25 min
May 16, 10:48 PM CDT	Severe Thunderstorm Warning	SHV	Lincoln, Union	57 min
May 17, 2:12 AM CDT	Severe Thunderstorm Warning	SHV	Union	33 min
May 17, 4:10 AM CDT	Severe Thunderstorm Warning	SHV	Union	50 min
May 17, 4:50 AM CDT	Severe Thunderstorm Warning	SHV	Ouachita	55 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.