Alert archive / Arkansas / Tornado Warnings in 2016

Tornado Warning 23, NWS Shreveport, LA

March 30, 2016Columbia County, Union County, Arkansas

NWS Shreveport, LA issued this tornado warning at Mar 30, 2016, 7:10 PM CDT for Columbia County, Union County, Arkansas. It was in force for 50 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: Mar 30, 2016, 7:10 PM CDT (00:10 UTC)
Expired: Mar 30, 2016, 8:00 PM CDT
In force: 50 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Columbia County, AR, Union County, AR

The radar

The Shreveport radar (KSHV), 120 km from the middle of the area, began a volume at 00:12 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 30, 2:31 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 0.2 hours before the alert went out and 112 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: 1333 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 683 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 246 m²/s²
0-3 km storm-relative helicity: 250 m²/s²
Significant tornado parameter: 2.5
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

As transmitted.

175 
WFUS54 KSHV 310010
TORSHV
ARC027-139-310100-
/O.NEW.KSHV.TO.W.0023.160331T0010Z-160331T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
710 PM CDT WED MAR 30 2016

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN COLUMBIA COUNTY IN SOUTHWESTERN ARKANSAS...
  NORTHWESTERN UNION COUNTY IN SOUTH CENTRAL ARKANSAS...

* UNTIL 800 PM CDT
    
* AT 709 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
  WAS LOCATED OVER EMERSON...OR 9 MILES SOUTH OF MAGNOLIA...MOVING
  NORTHEAST AT 35 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...
  MAGNOLIA AROUND 725 PM CDT. 
  VILLAGE AROUND 730 PM CDT. 
  MOUNT HOLLY AROUND 740 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
MEDLOCK...NOXOBE...LAUGHLIN...SPOTVILLE...CALHOUN AND EBENEZER.

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.

TORNADOES ARE EXTREMELY DIFFICULT TO SEE AND CONFIRM AT NIGHT. DO NOT
WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW!

&&

LAT...LON 3337 9286 3305 9314 3313 9333 3343 9312
      3338 9312 3338 9294
TIME...MOT...LOC 0009Z 210DEG 31KT 3313 9321 

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

$$

06

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 8:12 PM CDT	Areal Flood Advisory	SHV	Columbia, Union	3 hr
Mar 30, 8:51 PM CDT	River Flood Warning	SHV	Columbia	10 days
Mar 30, 9:40 PM CDT	Special Weather Statement	SHV	Columbia	35 min
Mar 30, 11:03 PM CDT	Flash Flood Warning	SHV	Union	3 hr

Nearby

Tornado Warnings in Arkansas, 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.