Alert archive / Louisiana / Tornado Warnings in 2016

Tornado Warning 66, NWS Shreveport, LA

November 28, 20164 parishes in Louisiana

NWS Shreveport, LA issued this tornado warning at Nov 28, 2016, 2:59 PM CST for 4 parishes in Louisiana. It was in force for 16 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: Nov 28, 2016, 2:59 PM CST (20:59 UTC)
Expired: Nov 28, 2016, 3:15 PM CST
In force: 16 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Caldwell Parish, LA, Grant Parish, LA, LaSalle Parish, LA, Winn Parish, LA

The radar

The Ft Polk radar (KPOE), 105 km from the middle of the area, began a volume at 21:02 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
Nov 28, 11:08 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 9.0 hours before the alert went out and 173 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: 14 J/kg
Mixed-layer CIN: -326 J/kg
Mixed-layer LCL: 701 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 499 m²/s²
0-3 km storm-relative helicity: 482 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

533 
WFUS54 KSHV 282059
TORSHV
LAC021-043-059-127-282115-
/O.NEW.KSHV.TO.W.0066.161128T2059Z-161128T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
259 PM CST MON NOV 28 2016

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN GRANT PARISH IN NORTH CENTRAL LOUISIANA...
  SOUTHERN CALDWELL PARISH IN NORTH CENTRAL LOUISIANA...
  LA SALLE PARISH IN NORTH CENTRAL LOUISIANA...
  SOUTHEASTERN WINN PARISH IN NORTH CENTRAL LOUISIANA...

* UNTIL 315 PM CST
    
* AT 259 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR MIDWAY...OR 27 MILES SOUTHEAST OF
  WINNFIELD...MOVING NORTHEAST AT 50 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED ROTATION. 

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. 
           DAMAGE TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR.  
           TREE DAMAGE IS LIKELY. 

* THIS DANGEROUS STORM WILL BE NEAR...
  JENA AND MIDWAY AROUND 305 PM CST. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
ZENORIA...GEORGETOWN...ROCHELLE...TULLOS AND URANIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3164 9201 3156 9229 3179 9240 3193 9214
      3193 9201 3184 9200
TIME...MOT...LOC 2059Z 243DEG 42KT 3171 9225 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

FB

1 follow-up statement

096 
WWUS54 KSHV 282107
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
307 PM CST MON NOV 28 2016

LAC043-127-282117-
/O.CAN.KSHV.TO.W.0066.000000T0000Z-161128T2115Z/
GRANT LA-WINN LA-
307 PM CST MON NOV 28 2016

...THE TORNADO WARNING FOR NORTHEASTERN GRANT AND SOUTHEASTERN WINN
PARISHES IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 PM CST FOR NORTH CENTRAL
LOUISIANA.

LAT...LON 3159 9218 3184 9231 3193 9214 3193 9201
      3184 9200 3164 9201
TIME...MOT...LOC 2107Z 243DEG 42KT 3175 9215 

$$

LAC021-059-282115-
/O.CON.KSHV.TO.W.0066.000000T0000Z-161128T2115Z/
CALDWELL LA-LA SALLE LA-
307 PM CST MON NOV 28 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CST FOR SOUTHERN
CALDWELL AND NORTHEASTERN LA SALLE PARISHES...
    
AT 307 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR MIDWAY...OR 24 MILES SOUTH OF COLUMBIA...MOVING
NORTHEAST AT 50 MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED ROTATION. 

IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT 
         SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE 
         TO ROOFS...WINDOWS...AND VEHICLES WILL OCCUR.  TREE DAMAGE 
         IS LIKELY. 

THIS TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
SOUTHERN CALDWELL AND NORTHEASTERN LA SALLE PARISHES...INCLUDING THE
FOLLOWING LOCATIONS: URANIA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3159 9218 3184 9231 3193 9214 3193 9201
      3184 9200 3164 9201
TIME...MOT...LOC 2107Z 243DEG 42KT 3175 9215 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

FB

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 27, 9:17 PM CST	Lake Wind Advisory	SHV	Bienville, Caldwell, Claiborne, Grant, Jackson, LaSalle and 7 more	20 hr
Nov 28, 11:19 AM CST	Special Weather Statement	SHV	Bossier, Caddo	41 min
Nov 28, 11:55 AM CST	Special Weather Statement	SHV	Bienville, Claiborne, De Soto, Lincoln, Webster	35 min
Nov 28, 12:02 PM CST	Special Weather Statement	SHV	Bossier, Caddo	28 min
Nov 28, 12:04 PM CST	Special Weather Statement	SHV	De Soto	26 min
Nov 28, 12:32 PM CST	Special Weather Statement	SHV	Bienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 7 more	43 min
Nov 28, 1:16 PM CST	Special Weather Statement	SHV	Bienville, Bossier, Caddo, Caldwell, Claiborne, De Soto and 11 more	44 min
Nov 28, 2:01 PM CST	Severe Thunderstorm Warning	SHV	De Soto, Sabine	21 min
Nov 28, 2:02 PM CST	Severe Thunderstorm Warning	SHV	Natchitoches, Sabine	31 min
Nov 28, 2:38 PM CST	Severe Thunderstorm Warning	SHV	Grant, LaSalle, Winn	25 min
Nov 28, 2:41 PM CST	Tornado Warning	SHV	Grant, LaSalle, Winn	19 min
Nov 28, 3:35 PM CST	Special Weather Statement	SHV	LaSalle	25 min

Nearby

Tornado Warnings in Louisiana, 2016 Every tornado warning in 2016 Tornadoes in 2016

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.