Alert archive / Texas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 113, NWS Lubbock, TX

November 21, 2011Floyd County, Hale County, Lubbock County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Nov 21, 2011, 11:46 AM CST for Floyd County, Hale County, Lubbock County, Texas. It was in force for 43 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: Nov 21, 2011, 11:46 AM CST (17:46 UTC)
Expired: Nov 21, 2011, 12:29 PM CST
In force: 43 min
Issued by: NWS Lubbock, TX
Area: Storm-based polygon

Counties Floyd County, TX, Hale County, TX, Lubbock County, TX

The radar

The Lubbock radar (KLBB), 39 km from the middle of the area, began a volume at 17:46 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 nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 5.8 hours before the alert went out and 148 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: 1625 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 83 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.

923 
WUUS54 KLUB 211746
SVRLUB
TXC153-189-303-211845-
/O.NEW.KLUB.SV.W.0113.111121T1746Z-111121T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LUBBOCK TX
1146 AM CST MON NOV 21 2011

THE NATIONAL WEATHER SERVICE IN LUBBOCK HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN FLOYD COUNTY IN NORTHWEST TEXAS.
  SOUTHEASTERN HALE COUNTY IN NORTHWEST TEXAS.
  NORTHEASTERN LUBBOCK COUNTY IN NORTHWEST TEXAS.

* UNTIL 1245 PM CST

* AT 1142 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED NEAR PETERSBURG...OR 13 MILES EAST OF
  ABERNATHY...AND MOVING NORTHEAST AT 35 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE                 
  PETERSBURG...AIKEN AND LOCKNEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LARGE HAIL AND VERY HEAVY RAINS ARE EXPECTED WITH THIS STORM. TAKE 
COVER IN A SUBSTANTIAL SHELTER.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.

TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE
AT 8067451290.

&&

LAT...LON 3413 10123 3383 10149 3383 10157 3375 10156
      3364 10165 3372 10182 3424 10160
TIME...MOT...LOC 1746Z 217DEG 38KT 3388 10160

$$

SRC

3 follow-up statements

005 
WWUS54 KLUB 211759
SVSLUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LUBBOCK TX
1159 AM CST MON NOV 21 2011

TXC153-189-303-211845-
/O.CON.KLUB.SV.W.0113.000000T0000Z-111121T1845Z/
FLOYD TX-HALE TX-LUBBOCK TX-
1159 AM CST MON NOV 21 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
LUBBOCK...SOUTHEASTERN HALE AND SOUTHWESTERN FLOYD COUNTIES UNTIL
1245 PM CST...

AT 1157 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS 
STORM WAS LOCATED 7 MILES NORTHEAST OF PETERSBURG...OR 11 MILES WEST 
OF FLOYDADA...MOVING NORTHEAST AT 35 MPH.

SOME LOCATIONS TO BE IMPACTED BY THIS STORM INCLUDE RURAL AREAS WEST 
OF FLOYDADA AND EVENTUALLY HIGHWAY 70 NORTHWEST OF FLOYDADA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 3413 10123 3383 10149 3383 10157 3375 10156
      3371 10161 3376 10175 3424 10160
TIME...MOT...LOC 1756Z 217DEG 30KT 3396 10152

$$

SRC

229 
WWUS54 KLUB 211810
SVSLUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LUBBOCK TX
1210 PM CST MON NOV 21 2011

TXC189-303-211817-
/O.CAN.KLUB.SV.W.0113.000000T0000Z-111121T1845Z/
HALE TX-LUBBOCK TX-
1210 PM CST MON NOV 21 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LUBBOCK AND
SOUTHEASTERN HALE COUNTIES IS CANCELLED...

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

LAT...LON 3413 10123 3383 10149 3383 10157 3423 10157
TIME...MOT...LOC 1807Z 213DEG 26KT 3402 10140

$$

TXC153-211845-
/O.CON.KLUB.SV.W.0113.000000T0000Z-111121T1845Z/
FLOYD TX-
1210 PM CST MON NOV 21 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
FLOYD COUNTY UNTIL 1245 PM CST...

AT 1204 PM CST...TRAINED WEATHER SPOTTERS REPORTED PEA SIZE HAIL 
WITH A THUNDERSTORM 7 MILES SOUTHWEST OF FLOYDADA. THE THUNDERSTORM 
IS CAPABLE OF PRODUCING QUARTER SIZE HAIL AS IT MOVE JUST WEST OF 
FLOYDADA. THIS STORM WAS MOVING NORTHEAST AT 30 MPH.

LOCATIONS ALONG HIGHWAY 70 NORTHWEST OF FLOYDADA AND RURAL AREAS OF 
WESTERN FLOYD COUNTY WILL BE IMPACTED BY THIS STORM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 3413 10123 3383 10149 3383 10157 3423 10157
TIME...MOT...LOC 1807Z 213DEG 26KT 3402 10140

$$

SRC

060 
WWUS54 KLUB 211829
SVSLUB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE LUBBOCK TX
1229 PM CST MON NOV 21 2011

TXC153-211837-
/O.CAN.KLUB.SV.W.0113.000000T0000Z-111121T1845Z/
FLOYD TX-
1229 PM CST MON NOV 21 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN FLOYD COUNTY IS
CANCELLED...

THE STORM NORTH OF FLOYDADA WHICH PROMPTED THE WARNING HAS WEAKENED. 
HAIL TO PENNY SIZE IS STILL POSSIBLE WITH THIS STORM AS IT MOVES 
NEAR SOUTH PLAINS AND CEDAR HILL. IN ADDITION...VERY HEAVY DOWNPOURS 
WILL RESULT IN POOR DRIVING CONDITIONS AND MAY RESULT IN WATER 
PONDING ON THE ROADWAYS. 

LAT...LON 3413 10123 3383 10149 3383 10157 3423 10157
TIME...MOT...LOC 1827Z 220DEG 14KT 3413 10128

$$

SRC

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 21, 6:21 AM CST	Dense Fog Advisory	LUB	Bailey, Castro, Cochran, Hale, Hockley, Lamb and 6 more	4 hr
Nov 21, 8:43 AM CST	Severe Thunderstorm Warning	LUB	Hockley, Lubbock	32 min
Nov 21, 9:14 AM CST	Severe Thunderstorm Warning	LUB	Hale, Hockley, Lubbock	61 min
Nov 21, 9:40 AM CST	Severe Thunderstorm Warning	LUB	Crosby, Garza	37 min
Nov 21, 10:06 AM CST	Severe Thunderstorm Warning	LUB	Crosby, Dickens	39 min
Nov 21, 10:17 AM CST	Severe Thunderstorm Warning	LUB	Motley	28 min
Nov 21, 11:10 AM CST	Severe Thunderstorm Warning	LUB	Cottle, Motley	35 min

Nearby

Severe Thunderstorm Warnings in Texas, 2011 Every severe thunderstorm warning in 2011

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.