Alert archive / Texas / Tornado Warnings in 2017

Tornado Warning 75, NWS Shreveport, LA

May 11, 20174 counties in Texas

NWS Shreveport, LA issued this tornado warning at May 11, 2017, 9:08 PM CDT for 4 counties in Texas. It was in force for 52 min. 2 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: May 11, 2017, 9:08 PM CDT (02:08 UTC)
Expired: May 11, 2017, 10:00 PM CDT
In force: 52 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Camp County, TX, Franklin County, TX, Titus County, TX, Wood County, TX

The radar

The Shreveport radar (KSHV), 141 km from the middle of the area, began a volume at 02:07 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, 9:25 PM CDT	HAIL 0.75	8 Ssw Miller'S Cove, TX	HAIL REPORT AT LAKE CYPRESS SPRINGS.
May 11, 9:25 PM CDT	HAIL 0.75	8 Ssw Miller'S Cove, TX

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, 2.1 hours before the alert went out and 147 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.

557 
WFUS54 KSHV 120208
TORSHV
TXC063-159-449-499-120300-
/O.NEW.KSHV.TO.W.0075.170512T0208Z-170512T0300Z/

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

The National Weather Service in Shreveport has issued a

* Tornado Warning for...
  Southern Franklin County in northeastern Texas...
  Northeastern Wood County in northeastern Texas...
  Southwestern Titus County in northeastern Texas...
  Northwestern Camp County in northeastern Texas...

* Until 1000 PM CDT
    
* At 908 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Purley, or 7 miles north of Winnsboro, moving east
  at 35 mph.

  HAZARD...Tornado and golf ball 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...
  Purley around 915 PM CDT. 
  Leesburg around 930 PM CDT. 
  Mount Pleasant and Pittsburg around 945 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Miller's Cove, Rocky Mound, Harvard, Cypress, Hopewell, Monticello
and Winfield.

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.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Shreveport.

&&

LAT...LON 3312 9531 3320 9492 3297 9489 3298 9531
TIME...MOT...LOC 0208Z 265DEG 29KT 3306 9532 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

13

2 follow-up statements

661 
WWUS54 KSHV 120226
SVSSHV

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

TXC063-159-449-499-120300-
/O.CON.KSHV.TO.W.0075.000000T0000Z-170512T0300Z/
Franklin TX-Wood TX-Titus TX-Camp TX-
926 PM CDT THU MAY 11 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
SOUTHEASTERN FRANKLIN...NORTHEASTERN WOOD...SOUTHWESTERN TITUS AND
NORTHWESTERN CAMP COUNTIES...
    
At 926 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Newsome, or near Leesburg, moving east at 40 mph.

HAZARD...Tornado and half dollar 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...
  Leesburg around 930 PM CDT. 
  Pittsburg around 940 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Miller's Cove, Rocky Mound, Harvard, Monticello and Hopewell.

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.

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 3320 9492 3297 9489 3298 9518 3314 9519
TIME...MOT...LOC 0226Z 268DEG 33KT 3305 9513 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

13

744 
WWUS54 KSHV 120250
SVSSHV

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

TXC063-159-449-499-120300-
/O.EXP.KSHV.TO.W.0075.000000T0000Z-170512T0300Z/
Franklin TX-Wood TX-Titus TX-Camp TX-
950 PM CDT THU MAY 11 2017

...THE TORNADO WARNING FOR SOUTHEASTERN FRANKLIN...NORTHEASTERN
WOOD...SOUTHWESTERN TITUS AND NORTHWESTERN CAMP COUNTIES WILL EXPIRE
AT 1000 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

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

LAT...LON 3320 9492 3297 9489 3298 9518 3314 9519
TIME...MOT...LOC 0250Z 265DEG 29KT 3307 9489 

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 7:08 PM CDT	Tornado Warning	SHV	Panola, Rusk	19 min
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, 9:17 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.