Alert archive / Texas / Tornado Warnings in 2015

Tornado Warning 3, NWS Amarillo, TX

April 11, 2015Carson County, Potter County, Texas

NWS Amarillo, TX issued this tornado warning at Apr 11, 2015, 6:31 PM CDT for Carson County, Potter County, Texas. It was in force for 44 min. 3 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, 6:31 PM CDT (23:31 UTC)
Expired: Apr 11, 2015, 7:15 PM CDT
In force: 44 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Carson County, TX, Potter County, TX

The radar

The Amarillo radar (KAMA), 35 km from the middle of the area, began a volume at 23:34 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, 6:45 PM CDT	HAIL 2.5	8 Sse Fritch, TX
Apr 11, 7:10 PM CDT	HAIL 1.5	12 S Borger, TX	REPORTED BETWEEN BORGER AND PANHANDLE
Apr 11, 7:22 PM CDT	HAIL 1.75	5 Nw White Deer, 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
Apr 11, 3:43 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.5 hours before the alert went out and 35 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: 8 J/kg
Mixed-layer CIN: -416 J/kg
Mixed-layer LCL: 1063 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 173 m²/s²
0-3 km storm-relative helicity: 197 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

827 
WFUS54 KAMA 112331
TORAMA
TXC065-375-120015-
/O.NEW.KAMA.TO.W.0003.150411T2331Z-150412T0015Z/

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

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN CARSON COUNTY IN THE PANHANDLE OF TEXAS...
  NORTHEASTERN POTTER COUNTY IN THE PANHANDLE OF TEXAS...

* UNTIL 715 PM CDT

* AT 630 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 8 MILES SOUTH OF LAKE MEREDITH...AND MOVING
  SOUTHEAST AT 40 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...
  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 10182 3562 10181 3563 10122 3537 10111
TIME...MOT...LOC 2331Z 302DEG 54KT 3552 10167

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

$$

CLK

2 follow-up statements

032 
WWUS54 KAMA 112345
SVSAMA

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

TXC065-375-120015-
/O.CON.KAMA.TO.W.0003.000000T0000Z-150412T0015Z/
POTTER TX-CARSON TX-
645 PM CDT SAT APR 11 2015

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN CARSON AND
NORTHEASTERN POTTER COUNTIES UNTIL 715 PM CDT...

AT 644 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 10 MILES SOUTH OF FRITCH...AND MOVING SOUTHEAST AT 40
MPH.

HAZARD...TORNADO.

SOURCE...WEATHER SPOTTERS REPORTED FUNNEL CLOUD AND A RAPIDLY        
         ROTATING WALL CLOUD.

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...
  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 3543 10145 3544 10150 3548 10174 3549 10174
      3562 10167 3563 10122 3537 10111
TIME...MOT...LOC 2345Z 302DEG 42KT 3549 10160

TORNADO...RADAR INDICATED
HAIL...IN

$$

CLK

528 
WWUS54 KAMA 120004
SVSAMA

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

TXC375-120013-
/O.CAN.KAMA.TO.W.0003.000000T0000Z-150412T0015Z/
POTTER TX-
704 PM CDT SAT APR 11 2015

...THE TORNADO WARNING FOR NORTHEASTERN POTTER COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3544 10154 3546 10160 3562 10152 3562 10122
      3537 10111
TIME...MOT...LOC 0003Z 289DEG 30KT 3553 10148

$$

TXC065-120015-
/O.CON.KAMA.TO.W.0003.000000T0000Z-150412T0015Z/
CARSON TX-
704 PM CDT SAT APR 11 2015

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN CARSON COUNTY
UNTIL 715 PM CDT...

AT 701 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 9 MILES SOUTHEAST OF FRITCH...AND MOVING EAST AT 35 MPH.

HAZARD...TORNADO AND GOLF BALL SIZE HAIL.

SOURCE...WEATHER SPOTTERS REPORTED FUNNEL CLOUD AND RAPID STORM      
         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...
  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 3544 10154 3546 10160 3562 10152 3562 10122
      3537 10111
TIME...MOT...LOC 0003Z 289DEG 30KT 3553 10148

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, 4:52 AM CDT	Special Weather Statement	AMA	Hartley	38 min
Apr 11, 6:31 AM CDT	Special Weather Statement	AMA	Hutchinson	44 min
Apr 11, 6:59 AM CDT	Special Weather Statement	AMA	Hutchinson	46 min
Apr 11, 7:43 AM CDT	Special Weather Statement	AMA	Hutchinson	47 min
Apr 11, 8:16 AM CDT	Special Weather Statement	AMA	Lipscomb	14 min
Apr 11, 9:15 AM CDT	Special Weather Statement	AMA	Hansford	15 min
Apr 11, 4:11 PM CDT	Special Weather Statement	AMA	Hartley	49 min
Apr 11, 4:54 PM CDT	Special Weather Statement	AMA	Moore	51 min
Apr 11, 5:00 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Moore, Oldham	60 min
Apr 11, 5:39 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	66 min
Apr 11, 5:51 PM CDT	Tornado Warning	AMA	Moore, Potter	39 min
Apr 11, 6:17 PM CDT	Tornado Warning	AMA	Carson, Hutchinson, Moore, Potter	27 min
Apr 11, 6:30 PM CDT	Special Weather Statement	AMA	Armstrong	45 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.