Alert archive / Texas / Tornado Warnings in 2015

Tornado Warning 4, NWS Amarillo, TX

April 11, 2015Carson County, Gray County, Texas

NWS Amarillo, TX issued this tornado warning at Apr 11, 2015, 7:17 PM CDT for Carson County, Gray County, Texas. It was in force for 43 min. 5 reports 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: Apr 11, 2015, 7:17 PM CDT (00:17 UTC)
Expired: Apr 11, 2015, 8:00 PM CDT
In force: 43 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Carson County, TX, Gray County, TX

The radar

The Amarillo radar (KAMA), 52 km from the middle of the area, began a volume at 00:16 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
Apr 11, 7:22 PM CDT	HAIL 1.75	5 Nw White Deer, TX
Apr 11, 7:42 PM CDT	HAIL 1.75	White Deer, TX
Apr 11, 7:45 PM CDT	HAIL 1.75	White Deer, TX
Apr 11, 7:51 PM CDT	HAIL 2.5	White Deer, TX	REPORT OF GOLF BALL TO TENNIS BALL SIZE HAIL
Apr 11, 8:02 PM CDT	HAIL 2	5 S Kingsmill, TX	MEASURED 1.92 INCHES

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
Apr 11, 3:43 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.3 hours before the alert went out and 51 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: 563 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1333 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 284 m²/s²
0-3 km storm-relative helicity: 493 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 7.4

Open this sounding in Storm Lab

The text

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

583 
WFUS54 KAMA 120017
TORAMA
TXC065-179-120100-
/O.NEW.KAMA.TO.W.0004.150412T0017Z-150412T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
717 PM CDT SAT APR 11 2015

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

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

* UNTIL 800 PM CDT

* AT 716 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 10 MILES NORTH OF PANHANDLE...AND MOVING
  SOUTHEAST AT 30 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.

* LOCATIONS IMPACTED INCLUDE...
  KINGSMILL...          WHITE DEER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3550 10098 3519 10100 3540 10150 3557 10150
TIME...MOT...LOC 0017Z 299DEG 27KT 3549 10140

TORNADO...RADAR INDICATED
HAIL...<1.00IN

$$

CLK

2 follow-up statements

277 
WWUS54 KAMA 120029
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
729 PM CDT SAT APR 11 2015

TXC065-179-120100-
/O.CON.KAMA.TO.W.0004.000000T0000Z-150412T0100Z/
GRAY TX-CARSON TX-
729 PM CDT SAT APR 11 2015

...A TORNADO WARNING REMAINS IN EFFECT FOR CARSON AND SOUTHWESTERN
GRAY COUNTIES UNTIL 800 PM CDT...

AT 729 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 8 MILES NORTH OF PANHANDLE...AND MOVING SOUTHEAST AT 30
MPH.

HAZARD...TORNADO AND GOLF BALL SIZE HAIL.

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.

* LOCATIONS IMPACTED INCLUDE...
  KINGSMILL...          WHITE DEER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3550 10098 3519 10100 3540 10150 3557 10150
TIME...MOT...LOC 0029Z 299DEG 27KT 3545 10130

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

CLK

728 
WWUS54 KAMA 120040
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
740 PM CDT SAT APR 11 2015

TXC065-179-120100-
/O.CON.KAMA.TO.W.0004.000000T0000Z-150412T0100Z/
GRAY TX-CARSON TX-
740 PM CDT SAT APR 11 2015

...A TORNADO WARNING REMAINS IN EFFECT FOR EASTERN CARSON AND
SOUTHWESTERN GRAY COUNTIES UNTIL 800 PM CDT...

AT 739 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR WHITE DEER...AND MOVING SOUTHEAST AT 30 MPH.

HAZARD...TORNADO AND GOLF BALL SIZE HAIL.

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.

* LOCATIONS IMPACTED INCLUDE...
  KINGSMILL...          WHITE DEER...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3532 10129 3554 10131 3550 10098 3519 10100
TIME...MOT...LOC 0040Z 297DEG 27KT 3544 10123

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

CLK

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 7:30 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Hutchinson, Roberts	60 min
Apr 11, 7:37 PM CDT	Special Weather Statement	AMA	Hutchinson	23 min
Apr 11, 7:57 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Hutchinson, Roberts	11 min
Apr 11, 8:07 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray	23 min
Apr 11, 8:26 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Gray, Hemphill, Wheeler	64 min
Apr 11, 9:28 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Wheeler	32 min
Apr 11, 11:16 PM CDT	Special Weather Statement	AMA	Lipscomb	44 min
Apr 11, 11:21 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb	27 min
Apr 12, 5:31 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Wheeler	59 min
Apr 12, 5:54 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley	66 min
Apr 12, 6:38 PM CDT	Special Weather Statement	AMA	Wheeler	67 min
Apr 12, 6:58 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley	62 min

Nearby

Tornado Warnings in Texas, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.