Alert archive / Texas / Special Weather Statements in 2015

Special Weather Statement, NWS Amarillo, TX

August 19, 2015Collingsworth County, Donley County, Texas

NWS Amarillo, TX issued this special weather statement at Aug 19, 2015, 3:13 AM CDT for Collingsworth County, Donley County, Texas. It was in force for 47 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: Aug 19, 2015, 3:13 AM CDT (08:13 UTC)
Expired: Aug 19, 2015, 4:00 AM CDT
In force: 47 min
Issued by: NWS Amarillo, TX

Counties Collingsworth County, TX, Donley County, TX

The radar

The Amarillo radar (KAMA), 99 km from the middle of the area, began a volume at 08:16 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.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 8.2 hours before the alert went out and 98 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: 2335 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 1537 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 337 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 16.5

Open this sounding in Storm Lab

The text

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

039 
WWUS84 KAMA 190813
SPSAMA

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
313 AM CDT WED AUG 19 2015
 
TXZ019-020-190900-
COLLINGSWORTH TX-DONLEY TX-
313 AM CDT WED AUG 19 2015

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN COLLINGSWORTH AND DONLEY
COUNTIES UNTIL 400 AM CDT...

AT 313 AM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 7 MILES EAST OF HOWARDWICK
TO 7 MILES EAST OF BRICE...AND MOVING EAST AT 45 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
WELLINGTON...CLARENDON...HOWARDWICK...HEDLEY...LUTIE...DOZIER...
GREENBELT LAKE...LELIA LAKE...QUAIL AND SAMNORWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FOR
CENTRAL TEXAS.

LAT...LON 3511 10102 3511 10016 3475 10014 3475 10100
TIME...MOT...LOC 0813Z 273DEG 39KT 3503 10078 3475 10076 

$$

14

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 8:56 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Hartley, Oldham	79 min
Aug 18, 10:01 PM CDT	Special Weather Statement	AMA	Ochiltree	44 min
Aug 18, 10:03 PM CDT	Special Weather Statement	AMA	Hartley	42 min
Aug 18, 10:11 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter	49 min
Aug 18, 10:37 PM CDT	Special Weather Statement	AMA	Roberts	38 min
Aug 18, 10:44 PM CDT	Special Weather Statement	AMA	Lipscomb	46 min
Aug 18, 10:45 PM CDT	Special Weather Statement	AMA	Oldham	45 min
Aug 18, 10:55 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	65 min
Aug 18, 10:58 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Oldham	47 min
Aug 18, 11:04 PM CDT	Special Weather Statement	AMA	Ochiltree	41 min
Aug 18, 11:06 PM CDT	Special Weather Statement	AMA	Roberts	39 min
Aug 18, 11:14 PM CDT	Severe Thunderstorm Warning	AMA	Gray	46 min
Aug 18, 11:18 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb, Ochiltree	31 min
Aug 18, 11:33 PM CDT	Special Weather Statement	AMA	Carson	42 min
Aug 18, 11:37 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb, Roberts	50 min
Aug 18, 11:41 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Oldham	49 min
Aug 18, 11:43 PM CDT	Special Weather Statement	AMA	Oldham	47 min
Aug 18, 11:47 PM CDT	Special Weather Statement	AMA	Potter	43 min
Aug 18, 11:54 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley, Gray, Wheeler	59 min
Aug 18, 11:59 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Oldham	46 min
Aug 19, 12:12 AM CDT	Severe Thunderstorm Warning	AMA	Hartley, Oldham	47 min
Aug 19, 12:21 AM CDT	Severe Thunderstorm Warning	AMA	Donley, Gray	37 min
Aug 19, 12:26 AM CDT	Special Weather Statement	AMA	Hemphill	49 min
Aug 19, 12:40 AM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter	65 min
Aug 19, 12:48 AM CDT	Special Weather Statement	AMA	Wheeler	42 min
Aug 19, 12:56 AM CDT	Special Weather Statement	AMA	Collingsworth, Donley, Wheeler	64 min
Aug 19, 1:00 AM CDT	Special Weather Statement	AMA	Potter	45 min
Aug 19, 1:25 AM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Randall	65 min
Aug 19, 1:34 AM CDT	Special Weather Statement	AMA	Potter	56 min
Aug 19, 1:37 AM CDT	Special Weather Statement	AMA	Oldham	53 min
Aug 19, 1:58 AM CDT	Severe Thunderstorm Warning	AMA	Potter, Randall	32 min
Aug 19, 2:24 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Donley, Gray, Potter, Randall	50 min
Aug 19, 2:29 AM CDT	Special Weather Statement	AMA	Randall	16 min
Aug 19, 2:51 AM CDT	Special Weather Statement	AMA	Randall	24 min
Aug 19, 3:16 AM CDT	Special Weather Statement	AMA	Deaf Smith	44 min
Aug 19, 3:41 AM CDT	Special Weather Statement	AMA	Oldham	34 min

Nearby

Special Weather Statements in Texas, 2015 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.