Alert archive / Texas / Tornado Warnings in 2012

Tornado Warning 1, NWS Amarillo, TX

February 3, 2012Hemphill County, Roberts County, Texas

NWS Amarillo, TX issued this tornado warning at Feb 3, 2012, 1:01 AM CST for Hemphill County, Roberts County, Texas. It was in force for 17 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: Feb 3, 2012, 1:01 AM CST (07:01 UTC)
Expired: Feb 3, 2012, 1:18 AM CST
In force: 17 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon

Counties Hemphill County, TX, Roberts County, TX

The radar

The Amarillo radar (KAMA), 128 km from the middle of the area, began a volume at 07:04 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
Feb 3, 1:11 AM CST	TSTM WND GST 74	17 Sw Canadian, 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
Feb 2, 7:38 PM CST	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 7.0 hours before the alert went out and 128 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: 692 m above ground
0-6 km bulk shear: 80 kt
0-1 km storm-relative helicity: 317 m²/s²
0-3 km storm-relative helicity: 390 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.

424 
WFUS54 KAMA 030701
TORAMA
TXC211-393-030730-
/O.NEW.KAMA.TO.W.0001.120203T0701Z-120203T0730Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
101 AM CST FRI FEB 3 2012

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN HEMPHILL COUNTY IN THE PANHANDLE OF TEXAS.
  SOUTHEASTERN ROBERTS COUNTY IN THE PANHANDLE OF TEXAS.

* UNTIL 130 AM CST

* AT 1255 AM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS HAVE
  DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE
  MOST DANGEROUS PART OF THIS STORM WAS LOCATED NEAR MIAMI...MOVING
  NORTHEAST AT 30 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE MIAMI...LORA AND
  CANADIAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

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

&&

LAT...LON 3600 10045 3573 10022 3562 10059 3570 10070
TIME...MOT...LOC 0700Z 231DEG 28KT 3567 10056

$$

TB

1 follow-up statement

074 
WWUS54 KAMA 030718
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
118 AM CST FRI FEB 3 2012

TXC211-393-030728-
/O.CAN.KAMA.TO.W.0001.000000T0000Z-120203T0730Z/
HEMPHILL TX-ROBERTS TX-
118 AM CST FRI FEB 3 2012

...THE TORNADO WARNING FOR SOUTHEASTERN ROBERTS AND WESTERN HEMPHILL
COUNTIES IS CANCELLED...

AT 118 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE STORM THAT PROMPTED THE TORNADO WARNING HAD WEAKENED. THEREFORE
THE TORNADO WARNING IS CANCELLED.

LAT...LON 3600 10045 3573 10022 3562 10059 3570 10070
TIME...MOT...LOC 0718Z 231DEG 28KT 3576 10043

$$

TB

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 2, 8:02 PM CST	Severe Thunderstorm Warning	AMA	Hemphill, Wheeler	29 min
Feb 2, 8:24 PM CST	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	51 min
Feb 2, 9:07 PM CST	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Ochiltree, Roberts	38 min
Feb 2, 9:49 PM CST	Severe Thunderstorm Warning	AMA	Lipscomb, Ochiltree	41 min
Feb 2, 9:52 PM CST	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Hutchinson, Moore, Potter, Randall	38 min
Feb 2, 11:24 PM CST	Severe Thunderstorm Warning	AMA	Armstrong, Carson	36 min
Feb 2, 11:48 PM CST	Severe Thunderstorm Warning	AMA	Carson, Gray	42 min
Feb 3, 12:49 AM CST	Severe Thunderstorm Warning	AMA	Gray, Hemphill, Roberts, Wheeler	41 min
Feb 3, 1:31 AM CST	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb	34 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.