Alert archive / Texas / Tornado Warnings in 2011

Tornado Warning 82, NWS Shreveport, LA

November 8, 2011Nacogdoches County, Rusk County, Texas

NWS Shreveport, LA issued this tornado warning at Nov 8, 2011, 1:43 PM CST for Nacogdoches County, Rusk County, Texas. It was in force for 47 min. 3 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: Nov 8, 2011, 1:43 PM CST (19:43 UTC)
Expired: Nov 8, 2011, 2:30 PM CST
In force: 47 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Nacogdoches County, TX, Rusk County, TX

The radar

The Shreveport radar (KSHV), 117 km from the middle of the area, began a volume at 19:45 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
Nov 8, 1:47 PM CST	TORNADO	15 Nw Nacogdoches, TX	TORNADO ON GROUND 7 MILES NORTH OF DOUGLASS OFF OF FM 225. MOVING NE AT 40 MPH.
Nov 8, 2:02 PM CST	TORNADO	5 Sw Mount Enterprise, TX	A TORNADO TOUCHED DOWN 5 MILES SOUTHWEST OF MOUNT ENTERPRISE IN NACOGDOCHES COUNTY...JUST EAST OF HAPPY VALLEY. IT CONTINUED ON AN EAST-NORTHEAST PATH CROSSING INTO RUSK COUNTY KNOCKING DOWN SEVERAL TREES AND TWISTING THE TOPS OFF OF SEVERAL MORE NEAR THE INTE
Nov 8, 2:23 PM CST	TORNADO	2 E Mount Enterprise, TX	TREES DOWN ON HWY 84.

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
Nov 8, 10:49 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 7.7 hours before the alert went out and 126 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: 12 J/kg
Mixed-layer CIN: -185 J/kg
Mixed-layer LCL: 496 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 296 m²/s²
0-3 km storm-relative helicity: 361 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

646 
WFUS54 KSHV 081943
TORSHV
TXC347-401-082030-
/O.NEW.KSHV.TO.W.0082.111108T1943Z-111108T2030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
143 PM CST TUE NOV 8 2011

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN NACOGDOCHES COUNTY IN EASTERN TEXAS...
  SOUTHEASTERN RUSK COUNTY IN NORTHEAST TEXAS...

* UNTIL 230 PM CST

* AT 141 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHEAST OF SACUL...OR 16 MILES EAST OF RUSK...MOVING NORTHEAST AT
  30 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  TRAWICK...GARRISON AND MINDEN...

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.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3164 9481 3175 9494 3176 9494 3176 9493
      3178 9498 3182 9494 3182 9495 3185 9494
      3207 9473 3186 9446 3183 9443
TIME...MOT...LOC 1943Z 225DEG 27KT 3176 9487

$$

23

1 follow-up statement

532 
WWUS54 KSHV 081949
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
149 PM CST TUE NOV 8 2011

TXC347-401-082030-
/O.CON.KSHV.TO.W.0082.000000T0000Z-111108T2030Z/
NACOGDOCHES TX-RUSK TX-
149 PM CST TUE NOV 8 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CST FOR RUSK AND
NACOGDOCHES COUNTIES...

AT 145 PM CST...LOCAL LAW ENFORCEMENT REPORTED A TORNADO 7 MILES 
NORTH OF DOUGLASS ALONG FM 225.  THIS TORNADO WAS LOCATED NEAR 
LOONEYVILLE...OR 16 MILES NORTHWEST OF NACOGDOCHES...MOVING 
NORTHEAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CUSHING...TRAWICK...GLENFAWN...LANEVILLE...MOUNT ENTERPRISE...
GARRISON...MINDEN AND LAWSONVILLE

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 3164 9481 3175 9494 3176 9494 3176 9493
      3178 9498 3182 9494 3182 9495 3185 9494
      3207 9473 3186 9446 3183 9443
TIME...MOT...LOC 1949Z 225DEG 27KT 3179 9483

$$

23

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 8, 1:13 PM CST	Tornado Warning	SHV	Cherokee, Nacogdoches	32 min
Nov 8, 1:47 PM CST	Severe Thunderstorm Warning	SHV	Camp, Franklin, Smith, Upshur, Wood	58 min
Nov 8, 2:14 PM CST	Tornado Warning	SHV	Smith, Upshur, Wood	31 min
Nov 8, 2:27 PM CST	Tornado Warning	SHV	Panola, Rusk, Shelby	11 min
Nov 8, 2:36 PM CST	Tornado Warning	SHV	Smith	11 min
Nov 8, 2:42 PM CST	Tornado Warning	SHV	Smith, Upshur	21 min
Nov 8, 3:00 PM CST	Severe Thunderstorm Warning	SHV	Cherokee, Gregg, Rusk, Smith	45 min
Nov 8, 3:02 PM CST	Severe Thunderstorm Warning	SHV	Camp, Cass, Gregg, Harrison, Marion, Morris and 1 more	43 min
Nov 8, 3:21 PM CST	Tornado Warning	SHV	Nacogdoches, Panola, Rusk	24 min
Nov 8, 3:58 PM CST	Severe Thunderstorm Warning	SHV	Panola, Shelby	47 min
Nov 8, 4:30 PM CST	Tornado Warning	SHV	Panola, Shelby	30 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.