Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 4, NWS Amarillo, TX

December 14, 2012Armstrong County, Carson County, Texas

NWS Amarillo, TX issued this tornado warning at Dec 14, 2012, 4:19 PM CST for Armstrong County, Carson County, Texas. It was in force for 26 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: Dec 14, 2012, 4:19 PM CST (22:19 UTC)
Expired: Dec 14, 2012, 4:45 PM CST
In force: 26 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon

Counties Armstrong County, TX, Carson County, TX

The radar

The Amarillo radar (KAMA), 17 km from the middle of the area, began a volume at 22:21 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
Dec 14, 4:26 PM CST	TSTM WND GST 60	Claude, 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
Dec 14, 2:28 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.3 hours before the alert went out and 16 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1556 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

466 
WFUS54 KAMA 142219
TORAMA
TXC011-065-142245-
/O.NEW.KAMA.TO.W.0004.121214T2219Z-121214T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
419 PM CST FRI DEC 14 2012

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN ARMSTRONG COUNTY IN THE PANHANDLE OF TEXAS...
  SOUTHWESTERN CARSON COUNTY IN THE PANHANDLE OF TEXAS...

* UNTIL 445 PM CST

* AT 410 PM CST...THE PUBLIC REPORTED A FUNNEL CLOUD NEAR WASHBURN.  
  NATIONAL WEATHER SERVICE DOPPLER RADAR ALSO INDICATED A SEVERE     
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DEVELOPING      
  TORNADO WAS LOCATED NEAR CONWAY ON INTERSTATE 40...4 MILES NORTH   
  OF WASHBURN...OR 14 MILES EAST OF AMARILLO. DOPPLER RADAR SHOWED   
  THIS SEVERE STORM MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IN THE PATH OF THIS TORNADO INCLUDE...
  PANHANDLE...          CLAUDE...             WASHBURN...
  PANTEX...

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 84 AND 103.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO MAY FORM AT ANY TIME...TAKE COVER NOW. ABANDON MOBILE HOMES
AND VEHICLES FOR MORE SUBSTANTIAL SHELTER. AVOID WINDOWS.

&&

LAT...LON 3515 10162 3516 10163 3529 10162 3538 10160
      3538 10135 3512 10123 3509 10155
TIME...MOT...LOC 2218Z 231DEG 37KT 3524 10157

$$

2 follow-up statements

071 
WWUS54 KAMA 142232
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
432 PM CST FRI DEC 14 2012

TXC011-065-142245-
/O.CON.KAMA.TO.W.0004.000000T0000Z-121214T2245Z/
CARSON TX-ARMSTRONG TX-
432 PM CST FRI DEC 14 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTH CENTRAL ARMSTRONG
AND SOUTH CENTRAL CARSON COUNTIES UNTIL 445 PM CST...

AT 426 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  
ALTHOUGH ROTATION WITHIN THIS STORM HAS WEAKENED...A TORNADO MAY 
DEVELOP RAPIDLY...AND A RISK OF DAMAGING WINDS REMAINS. THE MOST 
DANGEROUS PORTION OF THIS STORM IS LOCATED 5 MILES SOUTH OF 
PANHANDLE...MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS DANGEROUS STORM INCLUDE...
  PANHANDLE...

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 93 AND 103.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT...EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

&&

LAT...LON 3512 10133 3521 10145 3526 10152 3538 10147
      3538 10135 3512 10123
TIME...MOT...LOC 2231Z 231DEG 37KT 3530 10142

$$

085 
WWUS54 KAMA 142239
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
439 PM CST FRI DEC 14 2012

TXC011-065-142248-
/O.EXP.KAMA.TO.W.0004.000000T0000Z-121214T2245Z/
CARSON TX-ARMSTRONG TX-
439 PM CST FRI DEC 14 2012

...THE TORNADO WARNING FOR NORTH CENTRAL ARMSTRONG AND SOUTH CENTRAL
CARSON COUNTIES WILL EXPIRE AT 445 PM CST...

ROTATION ASSOCIATED WITH THE STORM WHICH PROMPTED THE WARNING HAS 
WEAKENED AND MOVED OUT OF THE WARNED AREA. SEVERE THUNDERSTORMS WITH 
A HISTORY OF DAMAGING WINDS CONTINUE IN PORTIONS OF ARMSTRONG AND 
CARSON COUNTIES.

LAT...LON 3512 10133 3521 10145 3526 10152 3538 10147
      3538 10135 3512 10123
TIME...MOT...LOC 2238Z 231DEG 37KT 3532 10133

$$

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 14, 6:30 AM CST	Wind Advisory	AMA	Deaf Smith, Oldham, Potter, Randall	12 hr
Dec 14, 2:17 PM CST	Special Weather Statement	AMA	Deaf Smith, Oldham	28 min
Dec 14, 2:32 PM CST	Special Weather Statement	AMA	Deaf Smith, Oldham	28 min
Dec 14, 2:40 PM CST	Special Weather Statement	AMA	Deaf Smith, Oldham	35 min
Dec 14, 2:54 PM CST	Special Weather Statement	AMA	Oldham	36 min
Dec 14, 3:05 PM CST	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham	55 min
Dec 14, 3:25 PM CST	Severe Thunderstorm Warning	AMA	Moore, Potter, Randall	95 min
Dec 14, 4:03 PM CST	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Hutchinson	73 min
Dec 14, 4:12 PM CST	Areal Flood Advisory	AMA	Potter, Randall	108 min
Dec 14, 4:42 PM CST	Special Weather Statement	AMA	Donley, Gray, Roberts	33 min
Dec 14, 4:48 PM CST	Severe Thunderstorm Warning	AMA	Donley, Gray	52 min
Dec 14, 4:53 PM CST	Tornado Warning	AMA	Donley	27 min
Dec 14, 4:54 PM CST	Tornado Warning	AMA	Gray	26 min
Dec 14, 5:13 PM CST	Severe Thunderstorm Warning	AMA	Collingsworth, Wheeler	68 min
Dec 14, 5:39 PM CST	Special Weather Statement	AMA	Hemphill, Lipscomb	36 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.