Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 1, NWS Shreveport, LA

January 25, 2012Harrison County, Panola County, Texas

NWS Shreveport, LA issued this tornado warning at Jan 25, 2012, 10:55 AM CST for Harrison County, Panola County, Texas. It was in force for 32 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: Jan 25, 2012, 10:55 AM CST (16:55 UTC)
Expired: Jan 25, 2012, 11:27 AM CST
In force: 32 min
Issued by: NWS Shreveport, LA
Area: Storm-based polygon

Counties Harrison County, TX, Panola County, TX

The radar

The Shreveport radar (KSHV), 60 km from the middle of the area, began a volume at 16:57 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
Jan 25, 10:56 AM CST	TORNADO	5 Wnw Gary City, TX	AN EF0 TORNADO TOUCHED DOWN 11 MILES NORTHEAST OF MT ENTERPRISE TX ALONG HWY 315 AND MOVED EAST NORTHEAST CROSSING CR 164 AND CR 163. SEVERAL TREES WERE SNAPPED AND UPROOTED ALONG THE PATH. THE TORNADO LIFTED BEFORE REACHING CR 160 IN PANOLA COUNTY. THE TORNAD

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
Jan 25, 7:56 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Shreveport, LA (KSHV), launched 12:00Z, 4.9 hours before the alert went out and 69 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: 3 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 490 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 314 m²/s²
0-3 km storm-relative helicity: 484 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

153 
WFUS54 KSHV 251655
TORSHV
TXC203-365-251745-
/O.NEW.KSHV.TO.W.0001.120125T1655Z-120125T1745Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
1055 AM CST WED JAN 25 2012

THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTH CENTRAL HARRISON COUNTY IN NORTHEAST TEXAS...
  PANOLA COUNTY IN NORTHEAST TEXAS...
  THIS INCLUDES THE CITY OF CARTHAGE...

* UNTIL 1145 AM CST

* AT 1052 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 14 MILES
  SOUTHWEST OF CARTHAGE...MOVING NORTHEAST AT 45 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  BECKVILLE...DEBERRY AND ELYSIAN FIELDS...

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 3214 9459 3216 9459 3258 9428 3230 9404
      3226 9404 3197 9453 3197 9455
TIME...MOT...LOC 1655Z 220DEG 40KT 3207 9451

$$

03

1 follow-up statement

188 
WWUS54 KSHV 251727
SVSSHV

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1127 AM CST WED JAN 25 2012

TXC203-365-251737-
/O.CAN.KSHV.TO.W.0001.000000T0000Z-120125T1745Z/
HARRISON TX-PANOLA TX-
1127 AM CST WED JAN 25 2012

...THE TORNADO WARNING FOR PANOLA AND HARRISON COUNTIES IS
CANCELLED...

NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWS THE ROTATION IN
THIS STORM HAS WEAKENED.

LAT...LON 3214 9459 3216 9459 3258 9428 3230 9404
      3226 9404 3197 9453 3197 9455
TIME...MOT...LOC 1727Z 220DEG 40KT 3234 9424

$$

03

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 25, 9:41 AM CST	Flash Flood Watch	SHV	Angelina, Bowie, Camp, Cass, Cherokee, Franklin and 15 more	11 hr
Jan 25, 9:41 AM CST	Severe Thunderstorm Warning	SHV	Cherokee, Nacogdoches, Rusk	49 min
Jan 25, 9:59 AM CST	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches, San Augustine	46 min
Jan 25, 10:06 AM CST	Areal Flood Advisory	SHV	Cherokee, Franklin, Red River, Smith, Titus	82 days
Jan 25, 10:33 AM CST	Severe Thunderstorm Warning	SHV	Gregg, Harrison, Nacogdoches, Panola, Rusk, Shelby	57 min
Jan 25, 10:35 AM CST	River Flood Warning	SHV	Franklin, Morris, Red River, Titus	5 days
Jan 25, 10:35 AM CST	River Flood Warning	SHV	Bowie, Cass, Morris	9 days
Jan 25, 10:36 AM CST	River Flood Warning	SHV	Franklin, Morris, Titus	5 days
Jan 25, 10:38 AM CST	River Flood Warning	SHV	Smith, Wood	6 days
Jan 25, 10:49 AM CST	Severe Thunderstorm Warning	SHV	Angelina, Nacogdoches, Sabine, San Augustine, Shelby	56 min
Jan 25, 11:32 AM CST	Severe Thunderstorm Warning	SHV	Harrison, Marion, Panola, Shelby	58 min
Jan 25, 1:17 PM CST	Tornado Warning	SHV	Sabine	28 min

Nearby

Tornado Warnings in Texas, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.