Alert archive / Arkansas / Tornado Warnings in 2011

Tornado Warning 6, NWS Shreveport, LA

April 4, 20115 counties in Arkansas; Cass County, Texas

NWS Shreveport, LA issued this tornado warning at Apr 4, 2011, 8:42 AM CDT for 5 counties in Arkansas; Cass County, Texas. It was in force for 48 min. 4 reports 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 4, 2011, 8:42 AM CDT (13:42 UTC)
Expired: Apr 4, 2011, 9:30 AM CDT
In force: 48 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Columbia County, AR, Hempstead County, AR, Lafayette County, AR, Miller County, AR, Nevada County, AR, Cass County, TX

The radar

The Shreveport radar (KSHV), 102 km from the middle of the area, began a volume at 13:45 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 4, 8:50 AM CDT	TORNADO	5 S Fouke, AR	AN EF1 TORNADO TOUCHED DOWN SOUTH OF FOUKE ALONG CR. 7 SNAPPING A FEW TREES. THE TORNADO CONTINUED EAST CROSSING OLD HWY. 71 SNAPPING MORE TREES AND A HOME SUSTAINED MINOR DAMAGE. THE TORNADO CROSSED 549 AND INTENSIFIED SNAPPING MORE TREES INTO A CLEAR CONVERG
Apr 4, 8:54 AM CDT	TORNADO	2 S Fouke, AR	EMERGENCY MANAGER REPORTED POSSIBLE TORNADO DAMAGE 2 MILES SOUTH OF FOUKE. A TREE WAS DOWNED ON A HOUSE...AND SEVERAL TREES WERE DOWNED IN A PATH.
Apr 4, 9:28 AM CDT	TORNADO	7 Sw Waldo, AR	AN EF1 TORNADO TOUCHED DOWN SOUTHWEST OF WALDO ALONG CR. 153 RIPPING TIN FROM A SMALL BARN. A HOME EAST OF CR. 153 SUSTAINED MINOR ROOF DAMAGE AND THE ADJACENT GARAGE SUSTAINED STRUCTURAL DAMAGE. THE TORNADO CONTINUED EAST SOUTHEAST CROSSING CR. 148 WHERE SEVE
Apr 4, 9:36 AM CDT	TSTM WND DMG	Magnolia, AR	DAMAGE TO MOBILE HOME AND ALSO RESIDENCE ALONG WITH NUMEROUS TREES AND POWER LINES DOWN AT 600 BLOCK OF CR 148 NEAR MAGNOLIA. ROADWAY BLOCKED DUE TO TREES.

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 4, 3:44 AM CDT	Severe Thunderstorm Watch	SPC	7 hr
Apr 4, 7:44 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 1.7 hours before the alert went out and 97 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: 1653 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 738 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 196 m²/s²
0-3 km storm-relative helicity: 292 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 8.2

Open this sounding in Storm Lab

The text

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

779 
WFUS54 KSHV 041342
TORSHV
ARC027-057-073-091-099-TXC067-041430-
/O.NEW.KSHV.TO.W.0006.110404T1342Z-110404T1430Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
842 AM CDT MON APR 4 2011

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN CASS COUNTY IN NORTHEAST TEXAS...
  THIS INCLUDES THE CITY OF ATLANTA...
  COLUMBIA COUNTY IN SOUTHWEST ARKANSAS...
  THIS INCLUDES THE CITIES OF...WALDO...MCNEIL...MAGNOLIA...
  SOUTHEASTERN HEMPSTEAD COUNTY IN SOUTHWEST ARKANSAS...
  LAFAYETTE COUNTY IN SOUTHWEST ARKANSAS...
  THIS INCLUDES THE CITIES OF...STAMPS...LEWISVILLE...
  MILLER COUNTY IN SOUTHWEST ARKANSAS...
  SOUTHERN NEVADA COUNTY IN SOUTHWEST ARKANSAS...

* UNTIL 930 AM CDT

* AT 837 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR QUEEN   
CITY...OR NEAR ATLANTA...MOVING EAST AT 65 MPH.  THIS STORM HAS 
ALREADY PRODUCED DAMAGE IN HUGHES SPRINGS TEXAS

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  DODDRIDGE...FOUKE...GENOA...BRADLEY...GARLAND...CANFIELD...
  WELCOME...TAYLOR...BUSSEY...BUCKNER...SMITHLAND...MACEDONIA...
  BODCAW...EMERSON...WILLISVILLE...ROSSTON...ATLANTA...VILLAGE AND
  BLUFF CITY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

&&

LAT...LON 3378 9313 3359 9310 3339 9310 3339 9306
      3303 9299 3303 9404 3301 9412 3323 9423
      3330 9408 3328 9405 3332 9404
TIME...MOT...LOC 1341Z 254DEG 58KT 3320 9404

$$

04

2 follow-up statements

050 
WWUS54 KSHV 041359
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
859 AM CDT MON APR 4 2011

TXC067-041408-
/O.CAN.KSHV.TO.W.0006.000000T0000Z-110404T1430Z/
CASS TX-
859 AM CDT MON APR 4 2011

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

LAT...LON 3319 9396 3335 9390 3378 9313 3359 9310
      3339 9310 3339 9306 3303 9299 3303 9382
TIME...MOT...LOC 1358Z 262DEG 50KT 3322 9380

$$

ARC027-057-073-091-099-041430-
/O.CON.KSHV.TO.W.0006.000000T0000Z-110404T1430Z/
NEVADA AR-HEMPSTEAD AR-COLUMBIA AR-LAFAYETTE AR-MILLER AR-
859 AM CDT MON APR 4 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 AM CDT FOR MILLER...
LAFAYETTE...COLUMBIA...HEMPSTEAD AND NEVADA COUNTIES...

AT 854 AM CDT...USING DOPPLER RADAR...NATIONAL WEATHER SERVICE 
METEOROLOGISTS CONTINUED TO DETECT A STORM CAPABLE OF PRODUCING A 
TORNADO.  THIS STORM WAS LOCATED NEAR FORT LYNN...OR 18 MILES EAST 
OF ATLANTA...MOVING EAST AT 60 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GIN
CITY...GARLAND...BRADLEY...SPIRIT LAKE...CANFIELD...BOYD...PINEY
GROVE...STATE LINE...LEWISVILLE...MARS HILL...PATMOS...LERCH...
MCKAMIE...TAYLOR...STAMPS...MOUNT PLEASANT...BUSSEY...CORNELIUS...
BUCKNER...FALCON...SMITHLAND...MOUNT VERNON...PLAINFIELD...
WALKERVILLE...BODCAW...BETHEL...MACEDONIA...HORSEHEAD...WALDO...
YOUNG...WILLISVILLE...WATERLOO...VILLAGE...SPOTVILLE...ROSSTON...
NOXOBE...MOUNT MORIAH...MORRIS...MCNEIL...MAGNOLIA...LAUGHLIN...
LAMARTINE...EMERSON...EBENEZER...COLLEGE HILL...CALHOUN...CALE...
BLUFF CITY AND ATLANTA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

&&

LAT...LON 3319 9396 3335 9390 3378 9313 3359 9310
      3339 9310 3339 9306 3303 9299 3303 9382
TIME...MOT...LOC 1358Z 262DEG 50KT 3322 9380

$$

04

930 
WWUS54 KSHV 041416
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
916 AM CDT MON APR 4 2011

ARC057-091-041425-
/O.CAN.KSHV.TO.W.0006.000000T0000Z-110404T1430Z/
HEMPSTEAD AR-MILLER AR-
916 AM CDT MON APR 4 2011

...THE TORNADO WARNING FOR MILLER AND HEMPSTEAD COUNTIES IS
CANCELLED...

LAT...LON 3304 9372 3323 9370 3339 9360 3348 9337
      3352 9310 3339 9310 3339 9306 3303 9299
TIME...MOT...LOC 1415Z 263DEG 62KT 3325 9350

$$

ARC027-073-099-041430-
/O.CON.KSHV.TO.W.0006.000000T0000Z-110404T1430Z/
NEVADA AR-COLUMBIA AR-LAFAYETTE AR-
916 AM CDT MON APR 4 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 AM CDT FOR
LAFAYETTE...COLUMBIA AND NEVADA COUNTIES...

AT 911 AM CDT...USING DOPPLER RADAR...NATIONAL WEATHER SERVICE
METEOROLOGISTS CONTINUED TO DETECT A TORNADO.  THIS TORNADO WAS
LOCATED NEAR MARS HILL...OR 8 MILES SOUTH OF LEWISVILLE...MOVING EAST
AT 70 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
STAMPS...BUSSEY...CORNELIUS...BUCKNER...SMITHLAND...MOUNT VERNON...
PLAINFIELD...WALKERVILLE...BETHEL...MACEDONIA...HORSEHEAD...WALDO...
LAMARTINE...MAGNOLIA...EMERSON...MCNEIL...VILLAGE...SPOTVILLE...
NOXOBE...LAUGHLIN...EBENEZER...COLLEGE HILL...CALHOUN AND ATLANTA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING QUARTER 
SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW! IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

&&

LAT...LON 3304 9372 3323 9370 3339 9360 3348 9337
      3352 9310 3339 9310 3339 9306 3303 9299
TIME...MOT...LOC 1415Z 263DEG 62KT 3325 9350

$$

04

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 6:00 AM CDT	Severe Thunderstorm Warning	SHV	Howard, Little River, Sevier	28 min
Apr 4, 7:34 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Sevier	41 min
Apr 4, 7:56 AM CDT	Severe Thunderstorm Warning	SHV	Miller	64 min
Apr 4, 8:19 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Miller, Sevier	56 min
Apr 4, 8:29 AM CDT	Severe Thunderstorm Warning	SHV	Columbia, Hempstead, Lafayette, Miller	61 min
Apr 4, 9:30 AM CDT	Tornado Warning	SHV	Columbia, Union	45 min
Apr 4, 9:44 AM CDT	Severe Thunderstorm Warning	SHV	Columbia, Union	46 min
Apr 4, 7:01 AM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Franklin, Morris, Red River, Titus and 1 more	59 min
Apr 4, 7:18 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Morris, Smith, Titus, Upshur and 1 more	57 min
Apr 4, 7:24 AM CDT	Severe Thunderstorm Warning	SHV	Smith, Wood	36 min
Apr 4, 8:17 AM CDT	Severe Thunderstorm Warning	SHV	Camp, Franklin, Morris, Smith, Titus, Upshur and 1 more	58 min
Apr 4, 9:33 AM CDT	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Panola, Rusk	57 min

Nearby

Tornado Warnings in Arkansas, 2011 Tornado Warnings in Texas, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.