Alert archive / Texas / Tornado Warnings in 2017

Tornado Warning 88, NWS Shreveport, LA

August 26, 2017Angelina County, Texas

NWS Shreveport, LA issued this tornado warning at Aug 26, 2017, 4:07 PM CDT for Angelina County, Texas. It was in force for 31 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: Aug 26, 2017, 4:07 PM CDT (21:07 UTC)
Expired: Aug 26, 2017, 4:38 PM CDT
In force: 31 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Angelina County, TX

The radar

The Ft Polk radar (KPOE), 142 km from the middle of the area, began a volume at 21:07 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.

The nearest sounding before it

Shreveport, LA (KBAD), launched 12:00Z, 9.1 hours before the alert went out and 154 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: 9 J/kg
Mixed-layer CIN: -197 J/kg
Mixed-layer LCL: 1191 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

099 
WFUS54 KSHV 262107
TORSHV
TXC005-262200-
/O.NEW.KSHV.TO.W.0088.170826T2107Z-170826T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Shreveport LA
407 PM CDT SAT AUG 26 2017

The National Weather Service in Shreveport has issued a

* Tornado Warning for...
  South central Angelina County in eastern Texas...

* Until 500 PM CDT
    
* At 407 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles north of Rockland, moving northwest at 20 mph.

  HAZARD...Tornado. 

  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...
  Huntington around 450 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Zavalla and Shawnee.

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.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

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 3127 9460 3133 9445 3132 9445 3131 9443
      3110 9434 3108 9439
TIME...MOT...LOC 2107Z 149DEG 19KT 3111 9438 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

13

3 follow-up statements

916 
WWUS54 KSHV 262116
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
416 PM CDT SAT AUG 26 2017

TXC005-262200-
/O.CON.KSHV.TO.W.0088.000000T0000Z-170826T2200Z/
Angelina TX-
416 PM CDT SAT AUG 26 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR CENTRAL
ANGELINA COUNTY...
    
At 416 PM CDT, a severe thunderstorm capable of producing a tornado
was located 10 miles north of Rockland, moving northwest at 25 mph.

HAZARD...Tornado. 

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...
  Huntington around 450 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Zavalla and Shawnee.

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 3127 9460 3133 9445 3132 9445 3131 9443
      3114 9439 3112 9442
TIME...MOT...LOC 2116Z 143DEG 20KT 3115 9442 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

13

605 
WWUS54 KSHV 262133
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
433 PM CDT SAT AUG 26 2017

TXC005-262200-
/O.CON.KSHV.TO.W.0088.000000T0000Z-170826T2200Z/
Angelina TX-
433 PM CDT SAT AUG 26 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR CENTRAL
ANGELINA COUNTY...
    
At 432 PM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles southeast of Huntington, or 16 miles north of
Rockland, moving northwest at 20 mph.

HAZARD...Tornado. 

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...
  Huntington around 450 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.

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 3127 9460 3133 9445 3132 9445 3131 9443
      3122 9443 3120 9448
TIME...MOT...LOC 2132Z 149DEG 19KT 3123 9447 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

13

258 
WWUS54 KSHV 262138
SVSSHV

Severe Weather Statement
National Weather Service Shreveport LA
438 PM CDT SAT AUG 26 2017

TXC005-262148-
/O.CAN.KSHV.TO.W.0088.000000T0000Z-170826T2200Z/
Angelina TX-
438 PM CDT SAT AUG 26 2017

...THE TORNADO WARNING FOR CENTRAL ANGELINA COUNTY 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.

LAT...LON 3127 9460 3133 9445 3132 9445 3131 9443
      3122 9443 3120 9448
TIME...MOT...LOC 2136Z 149DEG 19KT 3126 9449 

$$

13

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 3:31 PM CDT	Tornado Warning	SHV	Angelina	44 min
Aug 26, 4:02 PM CDT	Tornado Warning	SHV	Angelina, Nacogdoches	43 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.