Alert archive / Texas / Tornado Warnings in 2017

Tornado Warning 40, NWS Shreveport, LA

April 2, 20177 counties in Texas

NWS Shreveport, LA issued this tornado warning at Apr 2, 2017, 1:41 PM CDT for 7 counties in Texas. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 2, 2017, 1:41 PM CDT (18:41 UTC)
Expired
Apr 2, 2017, 2:15 PM CDT
In force
34 min
Issued by
NWS Shreveport, LA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

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

The radar

The Shreveport radar (KSHV), 94 km from the middle of the area, began a volume at 18:45 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.

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 6.7 hours before the alert went out and 101 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-pSkew-T log-p diagram, Shreveport, LA at 12:00Z on 2017-04-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 25 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 12:00Z on 2017-04-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 141 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
25 J/kg
Mixed-layer CIN
-354 J/kg
Mixed-layer LCL
1030 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
141 m²/s²
0-3 km storm-relative helicity
206 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

195 
WFUS54 KSHV 021841
TORSHV
TXC037-063-067-315-343-449-459-021930-
/O.NEW.KSHV.TO.W.0040.170402T1841Z-170402T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
141 PM CDT SUN APR 2 2017

The National Weather Service in Shreveport has issued a

* Tornado Warning for...
  Western Cass County in northeastern Texas...
  Northwestern Marion County in northeastern Texas...
  Southwestern Bowie County in northeastern Texas...
  Upshur County in northeastern Texas...
  Southern Morris County in northeastern Texas...
  Southeastern Titus County in northeastern Texas...
  Southeastern Camp County in northeastern Texas...

* Until 230 PM CDT
    
* At 141 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Gilmer, moving northeast at 50 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...
  Ore City and Cedar Springs around 200 PM CDT. 
  Lone Star and Jenkins around 210 PM CDT. 
  Daingerfield and Hughes Springs around 215 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Fairview, Marietta, Lafayette, Avinger, Center Point, Holly Springs,
Bettie, Union Grove, Midway and Pritchett.

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 3326 9457 3300 9428 3276 9464 3279 9470
      3272 9470 3254 9496 3254 9499 3253 9500
      3266 9515
TIME...MOT...LOC 1841Z 222DEG 45KT 3270 9497 

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

$$

12
3 follow-up statements
634 
WWUS54 KSHV 021856
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
156 PM CDT SUN APR 2 2017

TXC037-063-067-315-343-449-459-021930-
/O.CON.KSHV.TO.W.0040.000000T0000Z-170402T1930Z/
Cass TX-Marion TX-Bowie TX-Upshur TX-Morris TX-Titus TX-Camp TX-
156 PM CDT SUN APR 2 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR WESTERN
CASS...NORTHWESTERN MARION...SOUTHWESTERN BOWIE...NORTHEASTERN
UPSHUR...SOUTHERN MORRIS...SOUTHEASTERN TITUS AND SOUTHEASTERN CAMP
COUNTIES...
    
At 156 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Cedar Springs, or 11 miles northeast of Gilmer,
moving northeast at 50 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...
  Cedar Springs around 200 PM CDT. 
  Daingerfield, Lone Star and Jenkins around 210 PM CDT. 
  Hughes Springs around 215 PM CDT. 
  Rocky Branch around 220 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Fairview, Marietta, Lafayette, Avinger, Center Point, Holly Springs,
Bettie and Midway.

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 3326 9457 3300 9428 3276 9464 3279 9470
      3272 9470 3267 9477 3282 9499
TIME...MOT...LOC 1856Z 222DEG 45KT 3285 9481 

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

$$

12
831 
WWUS54 KSHV 021910
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
210 PM CDT SUN APR 2 2017

TXC063-449-459-021919-
/O.CAN.KSHV.TO.W.0040.000000T0000Z-170402T1930Z/
Upshur TX-Titus TX-Camp TX-
210 PM CDT SUN APR 2 2017

...THE TORNADO WARNING FOR NORTHEASTERN UPSHUR...SOUTHEASTERN TITUS
AND SOUTHEASTERN CAMP COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

LAT...LON 3326 9457 3300 9428 3278 9461 3287 9471
      3289 9471 3291 9473 3292 9476 3294 9478
      3294 9477 3296 9479 3296 9480 3298 9482
TIME...MOT...LOC 1909Z 222DEG 45KT 3297 9468 

$$

TXC037-067-315-343-021930-
/O.CON.KSHV.TO.W.0040.000000T0000Z-170402T1930Z/
Cass TX-Marion TX-Bowie TX-Morris TX-
210 PM CDT SUN APR 2 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 230 PM CDT FOR WESTERN
CASS...NORTHWESTERN MARION...SOUTHWESTERN BOWIE AND SOUTHERN MORRIS
COUNTIES...
    
At 209 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Jenkins, or 16 miles east of Pittsburg, moving
northeast at 50 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 tornadic thunderstorm will remain over mainly rural areas of
western Cass...northwestern Marion...southwestern Bowie and southern
Morris Counties, including the following locations: Fairview,
Marietta and Avinger.

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 3326 9457 3300 9428 3278 9461 3287 9471
      3289 9471 3291 9473 3292 9476 3294 9478
      3294 9477 3296 9479 3296 9480 3298 9482
TIME...MOT...LOC 1909Z 222DEG 45KT 3297 9468 

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

$$

12
923 
WWUS54 KSHV 021915
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
215 PM CDT SUN APR 2 2017

TXC037-067-315-343-021924-
/O.CAN.KSHV.TO.W.0040.000000T0000Z-170402T1930Z/
Cass TX-Marion TX-Bowie TX-Morris TX-
215 PM CDT SUN APR 2 2017

...THE TORNADO WARNING FOR WESTERN CASS...NORTHWESTERN MARION...
SOUTHWESTERN BOWIE AND SOUTHERN MORRIS COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

LAT...LON 3326 9457 3300 9428 3278 9461 3287 9471
      3289 9471 3291 9473 3292 9476 3294 9478
      3294 9477 3296 9479 3296 9480 3298 9482
TIME...MOT...LOC 1913Z 222DEG 45KT 3302 9462 

$$

12

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 2, 4:30 AM CDTFlash Flood WatchSHVAngelina, Cherokee, Gregg, Harrison, Marion, Nacogdoches and 8 more23 hr
Apr 2, 8:26 AM CDTSpecial Weather StatementSHVCherokee49 min
Apr 2, 8:53 AM CDTSpecial Weather StatementSHVCherokee52 min
Apr 2, 9:04 AM CDTSpecial Weather StatementSHVNacogdoches41 min
Apr 2, 9:10 AM CDTSevere Thunderstorm WarningSHVAngelina, Cherokee, Nacogdoches, Rusk65 min
Apr 2, 9:22 AM CDTSevere Thunderstorm WarningSHVAngelina, Cherokee, Nacogdoches53 min
Apr 2, 9:25 AM CDTSpecial Weather StatementSHVPanola, Shelby35 min
Apr 2, 9:42 AM CDTTornado WarningSHVPanola, Shelby48 min
Apr 2, 10:13 AM CDTSevere Thunderstorm WarningSHVAngelina, Nacogdoches47 min
Apr 2, 10:34 AM CDTSpecial Weather StatementSHVHarrison, Panola41 min
Apr 2, 10:56 AM CDTSevere Thunderstorm WarningSHVNacogdoches, Panola, Rusk, San Augustine, Shelby64 min
Apr 2, 11:34 AM CDTSevere Thunderstorm WarningSHVHarrison, Nacogdoches, Panola, San Augustine, Shelby56 min
Apr 2, 11:41 AM CDTTornado WarningSHVShelby49 min
Apr 2, 11:56 AM CDTTornado Warning Tornado observedSHVPanola, Shelby49 min
Apr 2, 12:42 PM CDTSevere Thunderstorm WarningSHVGregg, Harrison, Marion, Nacogdoches, Panola, Rusk and 1 more63 min
Apr 2, 12:51 PM CDTAreal Flood WarningSHVNacogdoches3 hr
Apr 2, 1:02 PM CDTTornado WarningSHVHarrison, Panola43 min
Apr 2, 1:09 PM CDTSevere Thunderstorm WarningSHVAngelina, Cherokee, Nacogdoches, Rusk, San Augustine66 min
Apr 2, 1:16 PM CDTTornado WarningSHVNacogdoches, Panola, San Augustine, Shelby44 min
Apr 2, 1:41 PM CDTRiver Flood WarningSHVAngelina, Cherokee, Nacogdoches5 days
Apr 2, 1:41 PM CDTRiver Flood WarningSHVNacogdoches, Rusk, San Augustine, Shelby5 days
Apr 2, 1:46 PM CDTRiver Flood WarningSHVAnderson, Cherokee, Houston, Trinity4 days
Apr 2, 1:46 PM CDTRiver Flood WarningSHVAngelina, Houston, Polk, Trinity, Tyler4 days
Apr 2, 1:46 PM CDTRiver Flood WarningSHVGregg67 hr
Apr 2, 1:52 PM CDTSevere Thunderstorm WarningSHVAngelina, Nacogdoches, Panola, Sabine, San Augustine, Shelby53 min
Apr 2, 2:41 PM CDTSevere Thunderstorm WarningSHVSabine64 min
Apr 2, 3:05 PM CDTTornado WarningSHVSabine40 min

Nearby

Tornado Warnings in Texas, 2017Every tornado warning in 2017Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.