Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 2, NWS Amarillo, TX

April 11, 2012Carson County, Hutchinson County, Texas

NWS Amarillo, TX issued this tornado warning at Apr 11, 2012, 7:39 PM CDT for Carson County, Hutchinson County, Texas. It was in force for 22 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 11, 2012, 7:39 PM CDT (00:39 UTC)
Expired: Apr 11, 2012, 8:01 PM CDT
In force: 22 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon

Counties Carson County, TX, Hutchinson County, TX

The radar

The Amarillo radar (KAMA), 62 km from the middle of the area, began a volume at 00:42 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 11, 3:11 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.7 hours before the alert went out and 62 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: 706 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1480 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.9

Open this sounding in Storm Lab

The text

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

399 
WFUS54 KAMA 120039
TORAMA
TXC065-233-120115-
/O.NEW.KAMA.TO.W.0002.120412T0039Z-120412T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
739 PM CDT WED APR 11 2012

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN HUTCHINSON COUNTY IN THE PANHANDLE OF TEXAS.
  NORTH CENTRAL CARSON COUNTY IN THE PANHANDLE OF TEXAS.

* UNTIL 815 PM CDT

* AT 738 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
  DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE
  MOST DANGEROUS PART OF THIS STORM WAS LOCATED NEAR BORGER...MOVING
  NORTHEAST AT 5 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE STINNETT...
  SANFORD AND BORGER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE
AT 8 0 6 3 3 5 1 1 2 1.

&&

LAT...LON 3587 10148 3576 10124 3557 10141 3565 10160
TIME...MOT...LOC 0039Z 209DEG 5KT 3569 10145

$$

KJS

2 follow-up statements

313 
WWUS54 KAMA 120053
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
753 PM CDT WED APR 11 2012

TXC065-233-120115-
/O.CON.KAMA.TO.W.0002.000000T0000Z-120412T0115Z/
HUTCHINSON TX-CARSON TX-
753 PM CDT WED APR 11 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM CDT FOR NORTH
CENTRAL CARSON AND SOUTHWESTERN HUTCHINSON COUNTIES...

AT 752 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A TORNADO.  THIS TORNADO WAS LOCATED NEAR BORGER...MOVING
NORTHEAST AT 5 MPH.

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTY.

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

TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE
AT 8 0 6 3 3 5 1 1 2 1.

LAT...LON 3587 10148 3576 10124 3557 10141 3565 10160
TIME...MOT...LOC 0053Z 209DEG 5KT 3571 10144

$$

KJS

839 
WWUS54 KAMA 120101
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
801 PM CDT WED APR 11 2012

TXC065-233-120111-
/O.CAN.KAMA.TO.W.0002.000000T0000Z-120412T0115Z/
HUTCHINSON TX-CARSON TX-
801 PM CDT WED APR 11 2012

...THE TORNADO WARNING FOR NORTH CENTRAL CARSON AND SOUTHWESTERN
HUTCHINSON COUNTIES IS CANCELLED...

AT 801 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE STORM THAT PROMPTED THE TORNADO WARNING HAD WEAKENED. THEREFORE
THE TORNADO WARNING IS CANCELLED.

LAT...LON 3587 10148 3576 10124 3557 10141 3565 10160
TIME...MOT...LOC 0101Z 209DEG 5KT 3572 10143

$$

KJS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 7:03 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Sherman	57 min
Apr 11, 7:05 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Moore, Sherman	42 min
Apr 11, 7:18 PM CDT	Areal Flood Advisory	AMA	Moore, Sherman	4 hr
Apr 11, 7:25 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	65 min
Apr 11, 8:12 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	2 hr
Apr 11, 8:40 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	38 min
Apr 11, 11:17 PM CDT	Areal Flood Warning	AMA	Moore	12 hr
Apr 11, 11:57 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Moore	63 min
Apr 12, 12:20 AM CDT	Areal Flood Advisory	AMA	Moore	4 hr
Apr 12, 11:04 AM CDT	Areal Flood Warning	AMA	Moore	8 hr

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