Alert archive / Texas / Tornado Warnings in 2017

Tornado Warning 68, NWS Shreveport, LA

May 11, 2017Panola County, Rusk County, Texas

NWS Shreveport, LA issued this tornado warning at May 11, 2017, 7:08 PM CDT for Panola County, Rusk County, Texas. It was in force for 19 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: May 11, 2017, 7:08 PM CDT (00:08 UTC)
Expired: May 11, 2017, 7:27 PM CDT
In force: 19 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Panola County, TX, Rusk County, TX

The radar

The Shreveport radar (KSHV), 88 km from the middle of the area, began a volume at 00:11 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
May 11, 7:10 PM CDT	TSTM WND DMG	9 Se Henderson, TX	TREE DOWN ON A HOUSE ALONG COUNTY ROAD 362 IN EAST RUSK COUNTY.

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
May 11, 2:43 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Shreveport, LA (KBAD), launched 00:00Z, 0.1 hours before the alert went out and 98 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: 1602 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 920 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 152 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 7.0

Open this sounding in Storm Lab

The text

As transmitted.

334 
WFUS54 KSHV 120008
TORSHV
TXC365-401-120045-
/O.NEW.KSHV.TO.W.0068.170512T0008Z-170512T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
708 PM CDT THU MAY 11 2017

The National Weather Service in Shreveport has issued a

* Tornado Warning for...
  Western Panola County in northeastern Texas...
  Central Rusk County in northeastern Texas...

* Until 745 PM CDT
    
* At 708 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Minden, or 10 miles southeast of Henderson, moving
  northeast at 15 mph.

  HAZARD...Tornado and quarter size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Pinehill around 735 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3200 9468 3203 9472 3216 9466 3206 9453
TIME...MOT...LOC 0008Z 219DEG 13KT 3203 9468 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

13

2 follow-up statements

905 
WWUS54 KSHV 120018
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
718 PM CDT THU MAY 11 2017

TXC365-401-120045-
/O.CON.KSHV.TO.W.0068.000000T0000Z-170512T0045Z/
Panola TX-Rusk TX-
718 PM CDT THU MAY 11 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 745 PM CDT FOR
SOUTHWESTERN PANOLA AND CENTRAL RUSK COUNTIES...
    
At 717 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Pinehill, or 9 miles southeast of Henderson, moving
northeast at 25 mph.

HAZARD...Tornado and quarter size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Pinehill around 730 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3205 9465 3208 9470 3216 9466 3207 9454
TIME...MOT...LOC 0017Z 215DEG 15KT 3208 9466 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

13

410 
WWUS54 KSHV 120027
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
727 PM CDT THU MAY 11 2017

TXC365-401-120037-
/O.CAN.KSHV.TO.W.0068.000000T0000Z-170512T0045Z/
Panola TX-Rusk TX-
727 PM CDT THU MAY 11 2017

...THE TORNADO WARNING FOR SOUTHWESTERN PANOLA AND CENTRAL RUSK
COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.

A severe thunderstorm watch remains in effect until 1000 PM CDT for
northeastern Texas.

LAT...LON 3205 9465 3208 9470 3216 9466 3207 9454
TIME...MOT...LOC 0026Z 219DEG 13KT 3210 9464 

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 7:11 PM CDT	Tornado Warning	SHV	Cherokee, Nacogdoches, Rusk	24 min
May 11, 7:27 PM CDT	Tornado Warning	SHV	Panola	33 min
May 11, 7:40 PM CDT	Severe Thunderstorm Warning	SHV	Angelina, Cherokee, Nacogdoches	65 min
May 11, 7:56 PM CDT	Special Weather Statement	SHV	Marion	49 min
May 11, 8:32 PM CDT	Tornado Warning	SHV	Nacogdoches, Rusk, Shelby	43 min
May 11, 8:44 PM CDT	Severe Thunderstorm Warning	SHV	Nacogdoches, Rusk, San Augustine, Shelby	50 min
May 11, 9:00 PM CDT	Tornado Warning	SHV	Shelby	29 min
May 11, 9:08 PM CDT	Tornado Warning	SHV	Camp, Franklin, Titus, Wood	52 min
May 11, 9:17 PM CDT	Severe Thunderstorm Warning	SHV	Shelby	43 min
May 11, 9:46 PM CDT	Severe Thunderstorm Warning	SHV	Camp, Cass, Morris, Titus	44 min
May 11, 10:21 PM CDT	Severe Thunderstorm Warning	SHV	Cherokee, Smith	54 min
May 11, 11:07 PM CDT	Special Weather Statement	SHV	Franklin, Titus, Wood	38 min
May 11, 11:18 PM CDT	Special Weather Statement	SHV	Rusk	42 min
May 11, 11:51 PM CDT	Special Weather Statement	SHV	Titus	39 min
May 12, 12:02 AM CDT	Special Weather Statement	SHV	Upshur	58 min
May 12, 12:40 AM CDT	Special Weather Statement	SHV	Angelina, Nacogdoches, San Augustine, Shelby	50 min
May 12, 4:32 AM CDT	Lake Wind Advisory	SHV	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more	13 hr

Nearby

Tornado Warnings in Texas, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.