Alert archive / Louisiana / Tornado Warnings in 2016

Tornado Warning 32, NWS Shreveport, LA

April 27, 20165 parishes in Louisiana

NWS Shreveport, LA issued this tornado warning at Apr 27, 2016, 7:08 AM CDT for 5 parishes in Louisiana. It was in force for 37 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 27, 2016, 7:08 AM CDT (12:08 UTC)
Expired: Apr 27, 2016, 7:45 AM CDT
In force: 37 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Bienville Parish, LA, Jackson Parish, LA, Lincoln Parish, LA, Ouachita Parish, LA, Union Parish, LA

The radar

The Shreveport radar (KSHV), 118 km from the middle of the area, began a volume at 12:12 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

Jackson, MS (KJAN), launched 12:00Z, 0.1 hours before the alert went out and 238 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: 705 J/kg
Mixed-layer CIN: -127 J/kg
Mixed-layer LCL: 593 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

587 
WFUS54 KSHV 271208
TORSHV
LAC013-049-061-073-111-271245-
/O.NEW.KSHV.TO.W.0032.160427T1208Z-160427T1245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
708 AM CDT WED APR 27 2016

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN JACKSON PARISH IN NORTH CENTRAL LOUISIANA...
  EAST CENTRAL BIENVILLE PARISH IN NORTHWESTERN LOUISIANA...
  CENTRAL UNION PARISH IN NORTH CENTRAL LOUISIANA...
  LINCOLN PARISH IN NORTH CENTRAL LOUISIANA...
  WEST CENTRAL OUACHITA PARISH IN NORTH CENTRAL LOUISIANA...

* UNTIL 745 AM CDT
    
* AT 707 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
  WAS LOCATED NEAR GRAMBLING...MOVING NORTHEAST AT 55 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...
  RUSTON AROUND 715 AM CDT. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
SPENCER...BAYOU D ARBONNE LAKE...UNIONVILLE...CHOUDRANT...D ARBONNE...
MOUNT ZION...DUBACH...ROCKY BRANCH...SHILOH AND VIENNA.

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 3239 9276 3255 9287 3291 9252 3273 9207
TIME...MOT...LOC 1207Z 240DEG 49KT 3247 9272 

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

$$

20

2 follow-up statements

155 
WWUS54 KSHV 271230
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
730 AM CDT WED APR 27 2016

LAC013-049-073-271239-
/O.CAN.KSHV.TO.W.0032.000000T0000Z-160427T1245Z/
JACKSON LA-BIENVILLE LA-OUACHITA LA-
730 AM CDT WED APR 27 2016

...THE TORNADO WARNING FOR NORTHWESTERN JACKSON...EAST CENTRAL
BIENVILLE AND WEST CENTRAL OUACHITA PARISHES IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT
OF THE WARNED AREA...THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3255 9262 3267 9271 3291 9252 3274 9213
TIME...MOT...LOC 1229Z 240DEG 49KT 3262 9241 

$$

LAC061-111-271245-
/O.CON.KSHV.TO.W.0032.000000T0000Z-160427T1245Z/
UNION LA-LINCOLN LA-
730 AM CDT WED APR 27 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 AM CDT FOR CENTRAL
UNION AND NORTHEASTERN LINCOLN PARISHES...
    
AT 729 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 10 MILES SOUTH OF FARMERVILLE...OR 13 MILES NORTHWEST OF
CLAIBORNE...MOVING NORTHEAST AT 55 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
CENTRAL UNION AND NORTHEASTERN LINCOLN PARISHES...INCLUDING THE
FOLLOWING LOCATIONS: BAYOU D ARBONNE LAKE...UNIONVILLE...D ARBONNE...
DUBACH...SHILOH...VIENNA AND DOWNSVILLE.

LAT...LON 3255 9262 3267 9271 3291 9252 3274 9213
TIME...MOT...LOC 1229Z 240DEG 49KT 3262 9241 

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

$$
20

907 
WWUS54 KSHV 271236
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
736 AM CDT WED APR 27 2016

LAC061-111-271245-
/O.EXP.KSHV.TO.W.0032.000000T0000Z-160427T1245Z/
UNION LA-LINCOLN LA-
736 AM CDT WED APR 27 2016

...THE TORNADO WARNING FOR CENTRAL UNION AND NORTHEASTERN LINCOLN
PARISHES WILL EXPIRE AT 745 AM CDT...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED...
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3255 9262 3267 9271 3291 9252 3274 9213
TIME...MOT...LOC 1234Z 240DEG 49KT 3262 9241 

$$

20

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 3:13 AM CDT	Special Weather Statement	SHV	Caddo	47 min
Apr 27, 4:32 AM CDT	Severe Thunderstorm Warning	SHV	Caddo	58 min
Apr 27, 5:31 AM CDT	Severe Thunderstorm Warning	SHV	De Soto, Sabine	59 min
Apr 27, 6:14 AM CDT	Severe Thunderstorm Warning	SHV	Bienville, Natchitoches	61 min
Apr 27, 6:33 AM CDT	Tornado Warning	SHV	Bienville, Jackson, Lincoln, Natchitoches, Winn	42 min
Apr 27, 6:39 AM CDT	Severe Thunderstorm Warning	SHV	Sabine	66 min
Apr 27, 6:43 AM CDT	Severe Thunderstorm Warning	SHV	De Soto, Natchitoches, Red River	62 min
Apr 27, 7:25 AM CDT	Special Weather Statement	SHV	Bienville	35 min
Apr 27, 7:51 AM CDT	Special Weather Statement	SHV	Ouachita	39 min
Apr 27, 8:20 AM CDT	Severe Thunderstorm Warning	SHV	Grant, Natchitoches, Winn	55 min
Apr 27, 8:32 AM CDT	Special Weather Statement	SHV	Caldwell	43 min
Apr 27, 9:05 AM CDT	Special Weather Statement	SHV	Grant, LaSalle	55 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.