Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 67, NWS Shreveport, LA

April 30, 20115 counties in Texas

NWS Shreveport, LA issued this tornado warning at Apr 30, 2011, 9:02 PM CDT for 5 counties in Texas. It was in force for 43 min. 6 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 30, 2011, 9:02 PM CDT (02:02 UTC)
Expired: Apr 30, 2011, 9:45 PM CDT
In force: 43 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Camp County, TX, Cass County, TX, Morris County, TX, Titus County, TX, Upshur County, TX

The radar

The Shreveport radar (KSHV), 100 km from the middle of the area, began a volume at 02:04 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 30, 9:09 PM CDT	TORNADO	Lone Star, TX	TREES AND POWER LINES DOWN ON THE NORTH SIDE OF LONE STAR. POWER OUTAGES REPORTED IN LONE STAR.
Apr 30, 9:10 PM CDT	TSTM WND DMG	2 S Daingerfield, TX	STORM SURVEY CONDUCTED IN SOUTHERN MORRIS COUNTY DETERMINED THAT DAMAGE WAS CONSISTENT WITH SEVERE THUNDERSTORM WIND GUSTS NEAR 80 MPH. DAMAGE WAS VERY SPORADIC AND A TORNADO TRACK COULD NOT BE FOUND. NEARLY THE ENTIRE ROOF OF A LOCAL FEED STORE WAS REMOVED AL
Apr 30, 9:24 PM CDT	TORNADO	1 Sw Hughes Springs, TX	AN EF0 TORNADO TOUCHED DOWN ON THE SOUTHWEST SIDE OF HUGHES SPRINGS. SEVERAL TREES WERE SNAPPED NEAR FM 250. TREES WERE DOWNED ONTO POWERLINES AND SHINGLES REMOVED FROM A HOME ALONG FM 2984. ANOTHER BUSINESS HAD ITS SHINGLES REMOVED ALONG THE EAST SIDE OF TOWN
Apr 30, 9:25 PM CDT	TORNADO	2 S Daingerfield, TX	TORNADO ON GROUND MOVING NE AT 25 MPH.
Apr 30, 9:25 PM CDT	TORNADO	Hughes Springs, TX	STATE TROOPER REPORTS TORNADO ON THE GROUND AND GOLF BALL SIZED HAIL
Apr 30, 9:34 PM CDT	FUNNEL CLOUD	2 Ne Hughes Springs, TX	STATE TROOPER REPORTS FUNNEL CLOUD 2 MILES NORTHEAST OF HUGHES SPRINGS

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 30, 5:55 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 2.0 hours before the alert went out and 105 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: 3108 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 891 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 199 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 13.1

Open this sounding in Storm Lab

The text

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

459 
WFUS54 KSHV 010202
TORSHV
TXC063-067-343-449-459-010245-
/O.NEW.KSHV.TO.W.0067.110501T0202Z-110501T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
902 PM CDT SAT APR 30 2011

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN CAMP COUNTY IN NORTHEAST TEXAS...
  SOUTHWESTERN CASS COUNTY IN NORTHEAST TEXAS...
  MORRIS COUNTY IN NORTHEAST TEXAS...
  EXTREME SOUTHEASTERN TITUS COUNTY IN NORTHEAST TEXAS...
  NORTHEASTERN UPSHUR COUNTY IN NORTHEAST TEXAS...

* UNTIL 945 PM CDT

* AT 902 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A 
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES         
  NORTHEAST OF HOLLY SPRINGS...OR 11 MILES EAST OF                   
  PITTSBURG...MOVING NORTHEAST AT 20 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CASON...DAINGERFIELD...JENKINS...HUGHES SPRINGS...OMAHA...ROCKY
  BRANCH AND NAPLES...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TREES HAVE BEEN DOWNED IN NORTHERN UPSHUR COUNTY WITH THIS STORM. IF 
YOU ARE ITS PATH...TAKE COVER NOW!

&&

LAT...LON 3298 9491 3328 9467 3294 9435 3288 9466
      3288 9470 3287 9471 3284 9486
TIME...MOT...LOC 0201Z 241DEG 16KT 3295 9479

$$

15

1 follow-up statement

757 
WWUS54 KSHV 010225
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
925 PM CDT SAT APR 30 2011

TXC063-449-459-010233-
/O.CAN.KSHV.TO.W.0067.000000T0000Z-110501T0245Z/
TITUS TX-CAMP TX-UPSHUR TX-
925 PM CDT SAT APR 30 2011

...THE TORNADO WARNING FOR UPSHUR...CAMP AND TITUS COUNTIES IS
CANCELLED...

THE TORNADIC STORM HAS EXITED THESE AREAS.

LAT...LON 3304 9481 3326 9465 3294 9435 3292 9467
      3296 9479
TIME...MOT...LOC 0223Z 253DEG 16KT 3299 9464

$$

TXC067-343-010245-
/O.CON.KSHV.TO.W.0067.000000T0000Z-110501T0245Z/
MORRIS TX-CASS TX-
925 PM CDT SAT APR 30 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM CDT FOR CASS AND
MORRIS COUNTIES...

AT 924 PM CDT...USING DOPPLER RADAR...NATIONAL WEATHER SERVICE
METEOROLOGISTS CONTINUED TO DETECT A TORNADO.  THIS TORNADO WAS 
LOCATED 3 MILES NORTHEAST OF JENKINS...OR JUST SOUTHWEST OF HUGHES 
SPRINGS...MOVING EAST NORTHEAST AT 20 MPH. IF YOU LIVE IN HUGHES 
SPRINGS...TAKE COVER IMMEDIATELY!

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HUGHES
SPRINGS...NAPLES AND FAIRVIEW

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING 
GOLFBALL 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.

&&

LAT...LON 3304 9481 3326 9465 3294 9435 3292 9467
      3296 9479
TIME...MOT...LOC 0223Z 253DEG 16KT 3299 9464

$$

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 7:03 PM CDT	Tornado Warning	SHV	Wood	42 min
Apr 30, 7:44 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Upshur, Wood	61 min
Apr 30, 8:26 PM CDT	Tornado Warning	SHV	Camp, Morris, Titus, Upshur	49 min
Apr 30, 9:44 PM CDT	Tornado Warning	SHV	Bowie, Cass	46 min
Apr 30, 10:27 PM CDT	Severe Thunderstorm Warning	SHV	Cass	63 min
May 1, 7:52 AM CDT	Severe Thunderstorm Warning	SHV	Red River	53 min
May 1, 5:43 PM CDT	Severe Thunderstorm Warning	SHV	Gregg, Smith, Upshur, Wood	62 min
May 1, 6:19 PM CDT	Tornado Warning	SHV	Gregg, Harrison, Marion, Upshur	41 min

Nearby

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.