Alert archive / Arkansas / Tornado Warnings in 2014

Tornado Warning 5, NWS Shreveport, LA

April 13, 2014Howard County, Sevier County, Arkansas; McCurtain County, Oklahoma

NWS Shreveport, LA issued this tornado warning at Apr 13, 2014, 10:08 PM CDT for Howard County, Sevier County, Arkansas; McCurtain County, Oklahoma. It was in force for 37 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 13, 2014, 10:08 PM CDT (03:08 UTC)
Expired: Apr 13, 2014, 10:45 PM CDT
In force: 37 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Howard County, AR, Sevier County, AR, McCurtain County, OK

The radar

The Western Arkansas radar (KSRX), 120 km from the middle of the area, began a volume at 03:08 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.

What was reported inside it

Time	Report	Where	Remark
Apr 13, 10:30 PM CDT	TSTM WND DMG	3 W De Queen, AR	A FEW TREES DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 13, 5:13 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 3.1 hours before the alert went out and 203 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: 244 J/kg
Mixed-layer CIN: -117 J/kg
Mixed-layer LCL: 826 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 544 m²/s²
0-3 km storm-relative helicity: 713 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

577 
WFUS54 KSHV 140308
TORSHV
ARC061-133-OKC089-140345-
/O.NEW.KSHV.TO.W.0005.140414T0308Z-140414T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1008 PM CDT SUN APR 13 2014

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  MCCURTAIN COUNTY IN SOUTHEAST OKLAHOMA...
  HOWARD COUNTY IN SOUTHWEST ARKANSAS...
  SEVIER COUNTY IN SOUTHWEST ARKANSAS...
  THIS INCLUDES THE CITIES OF...HORATIO...DE QUEEN...

* UNTIL 1045 PM CDT

* AT 1006 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS INDICATED
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 21 MILES WEST
  OF GILLHAM...OR 23 MILES NORTHWEST OF DE QUEEN...MOVING SOUTHEAST
  AT 30 MPH.

* THE TORNADO WILL BE NEAR...
  DE QUEEN AND GILLHAM BY 1045 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WARNING MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE
STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO
DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...
MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY MORNING
FOR SOUTHWESTERN ARKANSAS AND NORTHWESTERN LOUISIANA AND SOUTHEAST
OKLAHOMA AND NORTHEASTERN TEXAS.

&&

LAT...LON 3431 9446 3420 9446 3420 9426 3425 9425
      3421 9408 3391 9432 3418 9483 3437 9469
TIME...MOT...LOC 0308Z 296DEG 27KT 3423 9466

$$

05

2 follow-up statements

428 
WWUS54 KSHV 140319
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1019 PM CDT SUN APR 13 2014

ARC061-133-140329-
/O.CAN.KSHV.TO.W.0005.000000T0000Z-140414T0345Z/
HOWARD AR-SEVIER AR-
1019 PM CDT SUN APR 13 2014

...THE TORNADO WARNING FOR SEVIER AND HOWARD COUNTIES IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY MORNING
FOR SOUTHWESTERN ARKANSAS AND NORTHWESTERN LOUISIANA AND SOUTHEAST
OKLAHOMA AND NORTHEASTERN TEXAS.

LAT...LON 3419 9431 3420 9467 3432 9463 3433 9455
      3431 9446 3420 9446 3420 9430
TIME...MOT...LOC 0319Z 296DEG 27KT 3418 9457

$$

OKC089-140345-
/O.CON.KSHV.TO.W.0005.000000T0000Z-140414T0345Z/
MCCURTAIN OK-
1019 PM CDT SUN APR 13 2014

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR
MCCURTAIN COUNTY...

AT 1015 PM CDT...USING DOPPLER RADAR...NATIONAL WEATHER SERVICE
METEOROLOGISTS CONTINUED TO DETECT A TORNADO.  THIS TORNADO WAS
LOCATED OVER MCCURTAIN COUNTY...OR 18 MILES NORTHWEST OF DE QUEEN...
MOVING EAST AT 30 MPH.

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY MORNING
FOR SOUTHWESTERN ARKANSAS AND NORTHWESTERN LOUISIANA AND SOUTHEAST
OKLAHOMA AND NORTHEASTERN TEXAS.

&&

LAT...LON 3419 9431 3420 9467 3432 9463 3433 9455
      3431 9446 3420 9446 3420 9430
TIME...MOT...LOC 0319Z 296DEG 27KT 3418 9457

$$

19

175 
WWUS54 KSHV 140330
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1030 PM CDT SUN APR 13 2014

OKC089-140340-
/O.CAN.KSHV.TO.W.0005.000000T0000Z-140414T0345Z/
MCCURTAIN OK-
1030 PM CDT SUN APR 13 2014

...THE TORNADO WARNING FOR MCCURTAIN COUNTY IS CANCELLED...

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY MORNING
FOR SOUTHWESTERN ARKANSAS AND NORTHWESTERN LOUISIANA AND SOUTHEAST
OKLAHOMA AND NORTHEASTERN TEXAS.

LAT...LON 3419 9431 3420 9467 3432 9463 3433 9455
      3431 9446 3420 9446 3420 9430
TIME...MOT...LOC 0330Z 296DEG 27KT 3414 9448

$$

19

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 8:04 PM CDT	Lake Wind Advisory	SHV	Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more	3 hr
Apr 13, 10:01 PM CDT	Severe Thunderstorm Warning	SHV	Howard, Sevier	59 min
Apr 13, 11:57 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Nevada, Sevier	48 min
Apr 14, 4:38 AM CDT	Freeze Warning	SHV	Hempstead, Howard, Little River, Nevada, Sevier	28 hr
Apr 13, 9:26 PM CDT	Severe Thunderstorm Warning	SHV	McCurtain	64 min
Apr 14, 12:02 AM CDT	Severe Thunderstorm Warning	SHV	McCurtain	58 min

Nearby

Tornado Warnings in Arkansas, 2014 Tornado Warnings in Oklahoma, 2014 Every tornado warning in 2014 Tornadoes in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.