Alert archive / Louisiana / Tornado Warnings in 2016

Tornado Warning 44, NWS Shreveport, LA

April 29, 2016Bossier Parish, Caddo Parish, Louisiana

NWS Shreveport, LA issued this tornado warning at Apr 29, 2016, 9:58 PM CDT for Bossier Parish, Caddo Parish, Louisiana. It was in force for 32 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 29, 2016, 9:58 PM CDT (02:58 UTC)
Expired: Apr 29, 2016, 10:30 PM CDT
In force: 32 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Bossier Parish, LA, Caddo Parish, LA

The radar

The Shreveport radar (KSHV), 52 km from the middle of the area, began a volume at 03:00 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
Apr 29, 1:43 PM CDT	Tornado Watch	SPC	8 hr
Apr 29, 9:58 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 3.0 hours before the alert went out and 51 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: 835 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 591 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 455 m²/s²
0-3 km storm-relative helicity: 577 m²/s²
Significant tornado parameter: 2.9
Supercell composite: 11.8

Open this sounding in Storm Lab

The text

As transmitted.

297 
WFUS54 KSHV 300258
TORSHV
LAC015-017-300330-
/O.NEW.KSHV.TO.W.0044.160430T0258Z-160430T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
958 PM CDT FRI APR 29 2016

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

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

* UNTIL 1030 PM CDT
    
* AT 958 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
  WAS LOCATED NEAR VIVIAN...OR 23 MILES SOUTHEAST OF ATLANTA...MOVING
  NORTHEAST AT 30 MPH.

  HAZARD...TORNADO. 

  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...
  GILLIAM AROUND 1005 PM CDT. 
  HOSSTON AROUND 1010 PM CDT. 
  IDA AROUND 1025 PM CDT. 

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 3302 9393 3302 9391 3295 9372 3272 9393
      3277 9404
TIME...MOT...LOC 0258Z 210DEG 26KT 3283 9396 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

19

1 follow-up statement

785 
WWUS54 KSHV 300312
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1012 PM CDT FRI APR 29 2016

LAC015-017-300330-
/O.CON.KSHV.TO.W.0044.000000T0000Z-160430T0330Z/
CADDO LA-BOSSIER LA-
1012 PM CDT FRI APR 29 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1030 PM CDT FOR
NORTHWESTERN CADDO AND NORTHWESTERN BOSSIER PARISHES...
    
AT 1011 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER HOSSTON...MOVING NORTHEAST AT 30 MPH.

HAZARD...TORNADO. 

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...
  IDA AROUND 1025 PM CDT. 

LAT...LON 3302 9393 3302 9391 3295 9372 3280 9386
      3286 9400
TIME...MOT...LOC 0311Z 210DEG 26KT 3292 9390 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

19

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 29, 9:54 PM CDT	Special Weather Statement	SHV	Bossier	51 min
Apr 29, 10:27 PM CDT	Tornado Warning	SHV	Caddo	33 min
Apr 29, 10:57 PM CDT	Tornado Warning	SHV	Caddo	33 min
Apr 29, 11:25 PM CDT	Severe Thunderstorm Warning	SHV	Bossier, Caddo	65 min
Apr 29, 11:30 PM CDT	Tornado Warning	SHV	Bossier, Caddo	30 min
Apr 29, 11:32 PM CDT	Flash Flood Warning	SHV	Bossier, Caddo, Webster	8 hr
Apr 29, 11:59 PM CDT	Tornado Warning	SHV	Bossier, Caddo	46 min
Apr 30, 12:13 AM CDT	Severe Thunderstorm Warning	SHV	Caddo	62 min
Apr 30, 12:25 AM CDT	Tornado Warning	SHV	Bossier, Webster	50 min
Apr 30, 12:35 AM CDT	Tornado Warning	SHV	Caddo	55 min
Apr 30, 12:58 AM CDT	Tornado Warning	SHV	Caddo	47 min
Apr 30, 1:27 AM CDT	Flash Flood Warning	SHV	Bossier, Claiborne, Webster	5 hr
Apr 30, 1:30 AM CDT	Tornado Warning	SHV	Bossier, Caddo	45 min
Apr 30, 3:42 AM CDT	Areal Flood Advisory	SHV	Bossier, Caddo, De Soto	3 hr
Apr 30, 4:20 AM CDT	River Flood Warning	SHV	De Soto	9 days
Apr 30, 4:30 AM CDT	Severe Thunderstorm Warning	SHV	De Soto, Natchitoches, Red River, Sabine	60 min
Apr 30, 5:31 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, De Soto, Red River	46 min
Apr 30, 6:01 AM CDT	Areal Flood Warning	SHV	Claiborne, Webster	6 hr
Apr 30, 6:15 AM CDT	Special Weather Statement	SHV	Sabine	45 min
Apr 30, 7:27 AM CDT	Areal Flood Warning	SHV	Bossier, Caddo	6 hr
Apr 30, 7:36 AM CDT	River Flood Warning	SHV	Caddo	13 days
Apr 30, 8:03 AM CDT	Tornado Warning	SHV	Bienville, Jackson, Natchitoches, Red River, Winn	27 min
Apr 30, 8:09 AM CDT	Tornado Warning	SHV	Jackson, Lincoln, Union	25 min
Apr 30, 10:23 AM CDT	Special Weather Statement	SHV	Grant	52 min
Apr 30, 11:12 AM CDT	River Flood Warning	SHV	Caldwell, Ouachita	3 days
Apr 30, 11:18 AM CDT	River Flood Warning	SHV	Caldwell, Grant, LaSalle, Winn	4 days
Apr 30, 12:08 PM CDT	River Flood Warning	SHV	Bienville, Bossier, Red River, Webster	10 days
Apr 30, 12:08 PM CDT	Special Weather Statement	SHV	LaSalle	37 min
Apr 30, 12:15 PM CDT	River Flood Warning	SHV	Bossier, Caddo, Red River	8 days
Apr 30, 1:27 PM CDT	Areal Flood Warning	SHV	Bossier, Caddo	3 hr

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.