Alert archive / Arkansas / Tornado Warnings in 2011

Tornado Warning 28, NWS Shreveport, LA

April 25, 20114 counties in Arkansas; Bowie County, Texas

NWS Shreveport, LA issued this tornado warning at Apr 25, 2011, 6:15 PM CDT for 4 counties in Arkansas; Bowie County, Texas. It was in force for 45 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 25, 2011, 6:15 PM CDT (23:15 UTC)
Expired: Apr 25, 2011, 7:00 PM CDT
In force: 45 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Hempstead County, AR, Howard County, AR, Little River County, AR, Sevier County, AR, Bowie County, TX

The radar

The Shreveport radar (KSHV), 130 km from the middle of the area, began a volume at 23:17 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 25, 6:55 PM CDT	TSTM WND GST 60	Ogden, AR	STORM SPOTTER ESTIMATES 60 MPH WIND. TREES BLOWN DOWN ACROSS HWY 71 SOUTH COMPLETELY BLOCKING THE HWY.

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 25, 3:22 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 11.3 hours before the alert went out and 128 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: 1213 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 759 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 491 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 11.5

Open this sounding in Storm Lab

The text

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

616 
WFUS54 KSHV 252315
TORSHV
ARC057-061-081-133-TXC037-260000-
/O.NEW.KSHV.TO.W.0028.110425T2315Z-110426T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
615 PM CDT MON APR 25 2011

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL BOWIE COUNTY IN NORTHEAST TEXAS...
  THIS INCLUDES THE CITY OF NEW BOSTON...
  EXTREME WEST CENTRAL HEMPSTEAD COUNTY IN SOUTHWEST ARKANSAS...
  SOUTH CENTRAL HOWARD COUNTY IN SOUTHWEST ARKANSAS...
  EASTERN LITTLE RIVER COUNTY IN SOUTHWEST ARKANSAS...
  THIS INCLUDES THE CITY OF ASHDOWN...
  SOUTHEASTERN SEVIER COUNTY IN SOUTHWEST ARKANSAS...

* UNTIL 700 PM CDT

* AT 612 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR NEW
  BOSTON...MOVING NORTHEAST AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HOOKS...RICHMOND...OGDEN...WILTON...BEN LOMOND AND SARATOGA...

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.

&&

LAT...LON 3402 9395 3358 9389 3357 9393 3356 9394
      3357 9396 3354 9398 3357 9400 3356 9404
      3347 9404 3335 9449 3343 9457
TIME...MOT...LOC 2315Z 223DEG 50KT 3346 9445

$$

ELEVEN

1 follow-up statement

881 
WWUS54 KSHV 252345
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
645 PM CDT MON APR 25 2011

ARC057-061-081-133-TXC037-260000-
/O.CON.KSHV.TO.W.0028.000000T0000Z-110426T0000Z/
LITTLE RIVER AR-HEMPSTEAD AR-SEVIER AR-HOWARD AR-BOWIE TX-
645 PM CDT MON APR 25 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR BOWIE...
HOWARD...SEVIER...HEMPSTEAD AND LITTLE RIVER COUNTIES...

AT 642 PM CDT...USING DOPPLER RADAR...NATIONAL WEATHER SERVICE 
METEOROLOGISTS DETECTED ANOTHER TORNADO.  THIS TORNADO WAS LOCATED 
NEAR HOOKS...OR 6 MILES SOUTHEAST OF NEW BOSTON...MOVING NORTHEAST 
AT 55 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
LEARY...RED BANK...RICHMOND...ARDEN...PINE PRAIRIE...WILTON...
SARATOGA...RED BLUFF...OGDEN...MILLWOOD...BROWNTOWN...BEN LOMOND AND
ASHDOWN

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.

&&

LAT...LON 3402 9395 3358 9389 3357 9393 3356 9394
      3357 9396 3354 9398 3357 9400 3356 9404
      3347 9404 3335 9449 3343 9457
TIME...MOT...LOC 2344Z 223DEG 50KT 3343 9430

$$

ELEVEN

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 10:17 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Sevier	58 min
Apr 25, 12:14 AM CDT	Severe Thunderstorm Warning	SHV	Howard, Little River, Sevier	76 min
Apr 25, 12:41 AM CDT	Severe Thunderstorm Warning	SHV	Little River, Sevier	64 min
Apr 25, 1:24 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Nevada, Sevier	66 min
Apr 25, 3:48 AM CDT	Lake Wind Advisory	SHV	Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more	21 hr
Apr 25, 6:14 AM CDT	Severe Thunderstorm Warning	SHV	Howard, Little River, Sevier	61 min
Apr 25, 7:11 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Sevier	64 min
Apr 25, 8:47 AM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Little River, Miller, Nevada	43 min
Apr 25, 9:05 AM CDT	Tornado Warning	SHV	Hempstead, Nevada	25 min
Apr 25, 9:26 AM CDT	Tornado Warning	SHV	Hempstead, Nevada	19 min
Apr 25, 1:22 PM CDT	Tornado Warning	SHV	Sevier	23 min
Apr 25, 2:10 PM CDT	Tornado Warning	SHV	Howard, Sevier	35 min
Apr 25, 2:53 PM CDT	Flash Flood Warning	SHV	Howard, Little River, Sevier	4 hr
Apr 25, 3:03 PM CDT	Tornado Warning	SHV	Howard, Little River, Sevier	27 min
Apr 25, 3:14 PM CDT	Severe Thunderstorm Warning	SHV	Little River, Sevier	46 min
Apr 25, 3:28 PM CDT	Tornado Warning	SHV	Howard, Sevier	32 min
Apr 25, 3:39 PM CDT	Severe Thunderstorm Warning	SHV	Little River, Sevier	51 min
Apr 25, 3:49 PM CDT	Flash Flood Watch	SHV	Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 3 more	39 hr
Apr 25, 3:59 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Sevier	46 min
Apr 25, 4:02 PM CDT	Tornado Warning	SHV	Little River, Sevier	28 min
Apr 25, 4:27 PM CDT	Tornado Warning	SHV	Howard, Sevier	48 min
Apr 25, 5:14 PM CDT	Tornado Warning	SHV	Little River	31 min
Apr 25, 5:27 PM CDT	Tornado Warning	SHV	Little River, Sevier	33 min
Apr 25, 5:30 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Miller, Sevier	45 min
Apr 25, 6:06 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Howard, Little River, Nevada, Sevier	39 min
Apr 25, 6:43 PM CDT	Flash Flood Warning	SHV	Hempstead, Howard, Little River, Sevier	3 hr
Apr 25, 6:54 PM CDT	Severe Thunderstorm Warning	SHV	Hempstead, Lafayette, Little River, Miller	51 min
Apr 25, 6:57 PM CDT	Severe Thunderstorm Warning	SHV	Miller	48 min
Apr 24, 7:33 PM CDT	Lake Wind Advisory	SHV	Angelina, Camp, Cass, Cherokee, Franklin, Gregg and 13 more	87 min
Apr 24, 9:35 PM CDT	Severe Thunderstorm Warning	SHV	Red River	55 min
Apr 25, 12:09 AM CDT	Severe Thunderstorm Warning	SHV	Franklin, Red River, Titus	66 min
Apr 25, 5:19 AM CDT	Severe Thunderstorm Warning	SHV	Red River	56 min
Apr 25, 12:11 PM CDT	Severe Thunderstorm Warning	SHV	Red River	49 min
Apr 25, 12:29 PM CDT	Flash Flood Warning	SHV	Red River	4 hr
Apr 25, 1:37 PM CDT	Severe Thunderstorm Warning	SHV	Red River	38 min
Apr 25, 1:48 PM CDT	Tornado Warning	SHV	Red River	27 min
Apr 25, 2:36 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Smith, Upshur, Wood	54 min
Apr 25, 2:37 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Franklin, Red River, Titus	38 min
Apr 25, 2:55 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Smith	50 min
Apr 25, 3:14 PM CDT	Tornado Warning	SHV	Camp, Cass, Harrison, Marion, Morris, Upshur	46 min
Apr 25, 3:30 PM CDT	Tornado Warning	SHV	Cherokee, Gregg, Rusk, Smith	45 min
Apr 25, 4:11 PM CDT	Severe Thunderstorm Warning	SHV	Harrison, Panola, Rusk	19 min
Apr 25, 4:39 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Franklin, Morris, Red River, Titus	51 min
Apr 25, 6:02 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Franklin, Red River, Titus	43 min
Apr 25, 6:24 PM CDT	Severe Thunderstorm Warning	SHV	Bowie, Camp, Franklin, Morris, Red River, Titus	36 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.