Alert archive / Louisiana / Tornado Warnings in 2016

Tornado Warning 31, NWS Shreveport, LA

April 27, 20165 parishes in Louisiana

NWS Shreveport, LA issued this tornado warning at Apr 27, 2016, 6:33 AM CDT for 5 parishes in Louisiana. It was in force for 42 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, 6:33 AM CDT (11:33 UTC)
Expired: Apr 27, 2016, 7:15 AM CDT
In force: 42 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, Natchitoches Parish, LA, Winn Parish, LA

The radar

The Shreveport radar (KSHV), 95 km from the middle of the area, began a volume at 11:34 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 27, 4:56 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 11.6 hours before the alert went out and 87 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: 1971 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1327 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted.

392 
WFUS54 KSHV 271133
TORSHV
LAC013-049-061-069-127-271215-
/O.NEW.KSHV.TO.W.0031.160427T1133Z-160427T1215Z/

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

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN JACKSON PARISH IN NORTH CENTRAL LOUISIANA...
  SOUTHEASTERN BIENVILLE PARISH IN NORTHWESTERN LOUISIANA...
  SOUTH CENTRAL LINCOLN PARISH IN NORTH CENTRAL LOUISIANA...
  NORTH CENTRAL NATCHITOCHES PARISH IN NORTHWESTERN LOUISIANA...
  NORTHERN WINN PARISH IN NORTH CENTRAL LOUISIANA...

* UNTIL 715 AM CDT
    
* AT 633 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
  WAS LOCATED 15 MILES WEST OF JONESBORO...MOVING EAST AT 30 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...
  JONESBORO AROUND 700 AM CDT. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE LUCKY...
FRIENDSHIP...SALINE...QUITMAN...NORTH HODGE...HODGE...EAST HODGE...LIBERTY
HILL AND BIENVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING ISSUED
FOR THE SAME AREA.

TO REPORT SEVERE WEATHER CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY.
THEY WILL SEND YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
SHREVEPORT.

THIS CLUSTER OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A BUILDING.

&&

LAT...LON 3213 9298 3229 9312 3246 9265 3215 9261
TIME...MOT...LOC 1133Z 250DEG 27KT 3225 9298 

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

$$

21

1 follow-up statement

126 
WWUS54 KSHV 271156
SVSSHV

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

LAC069-127-271206-
/O.CAN.KSHV.TO.W.0031.000000T0000Z-160427T1215Z/
NATCHITOCHES LA-WINN LA-
656 AM CDT WED APR 27 2016

...THE TORNADO WARNING FOR NORTH CENTRAL NATCHITOCHES AND NORTHERN
WINN PARISHES IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED.
MOVED OUT OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN
CANCELLED.

LAT...LON 3230 9292 3236 9292 3246 9265 3231 9263
TIME...MOT...LOC 1156Z 250DEG 27KT 3231 9279 

$$

LAC013-049-061-271215-
/O.CON.KSHV.TO.W.0031.000000T0000Z-160427T1215Z/
JACKSON LA-BIENVILLE LA-LINCOLN LA-
656 AM CDT WED APR 27 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 AM CDT FOR
NORTHWESTERN JACKSON...EAST CENTRAL BIENVILLE AND SOUTH CENTRAL
LINCOLN PARISHES...
    
AT 656 AM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR JONESBORO...MOVING EAST AT 30 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
NORTHWESTERN JACKSON...EAST CENTRAL BIENVILLE AND SOUTH CENTRAL
LINCOLN PARISHES...INCLUDING THE FOLLOWING LOCATIONS: QUITMAN AND
LIBERTY HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF A TORNADO OR OTHER SEVERE WEATHER IS SPOTTED...REPORT IT TO THE
NATIONAL WEATHER SERVICE OR YOUR LOCAL NEAREST LAW ENFORCEMENT AGENCY
WHO WILL SEND YOUR REPORT. THIS ACT MAY SAVE LIVES OF OTHERS IN THE
PATH OF DANGEROUS WEATHER.

THIS CLUSTER OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A BUILDING.

&&

LAT...LON 3230 9292 3236 9292 3246 9265 3231 9263
TIME...MOT...LOC 1156Z 250DEG 27KT 3231 9279 

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

$$

21

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, 6:39 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, 7:08 AM CDT	Tornado Warning	SHV	Bienville, Jackson, Lincoln, Ouachita, Union	37 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.