Alert archive / Texas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 266, NWS Lubbock, TX

October 7, 2017Dickens County, King County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Oct 7, 2017, 12:57 AM CDT for Dickens County, King County, Texas. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 7, 2017, 12:57 AM CDT (05:57 UTC)
Expired
Oct 7, 2017, 1:30 AM CDT
In force
33 min
Issued by
NWS Lubbock, TX
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Dickens County, TX, King County, TX

The radar

The Lubbock radar (KLBB), 120 km from the middle of the area, began a volume at 05:59 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, 6.0 hours before the alert went out and 210 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-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2017-10-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 991 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2017-10-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
991 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1620 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
0.2
Supercell composite
8.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Lubbock, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 7, 12:25 AM CDT, 32 minutes earlier.

Area forecast discussion, Oct 7, 12:25 AM CDT, 32 minutes before
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Hazardous weather outlook, Oct 6, 7:02 AM CDT, 17 hours 55 minutes before
Hazardous Weather Outlook...CORRECTED
National Weather Service Lubbock TX
702 AM CDT Fri Oct 6 2017

TXZ021>044-070900-
Parmer-Castro-Swisher-Briscoe-Hall-Childress-Bailey-Lamb-Hale-
Floyd-Motley-Cottle-Cochran-Hockley-Lubbock-Crosby-Dickens-King-
Yoakum-Terry-Lynn-Garza-Kent-Stonewall-
702 AM CDT Fri Oct 6 2017

This Hazardous Weather Outlook is for the South Plains...Rolling
Plains and the far Southern Texas Panhandle.

.DAY ONE...Today and Tonight

There is a slight risk of severe thunderstorms this evening
generally north and west of a Morton to Lubbock to Childress
line. A cold front will move through the South Plains area this
evening. As this front moves into rich low level moisture
scattered to numerous thunderstorms are expected to develop along
it and move mainly in an east and southeast direction with the
front. The amount of instability associated with the moist air
mass in concert with favorable winds aloft will create an
environment for some of the storms to become severe with hail to
the size of golfballs and wind gusts to 70 mph possible.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested this evening.

In the hours before

Local storm report, Oct 6, 10:06 PM CDT, 2 hours 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
1006 PM CDT FRI OCT 06 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1005 PM     TSTM WND GST     2 ENE TULIA             34.54N 101.74W
10/06/2017  M67 MPH          SWISHER            TX   MESONET

            WEST TEXAS MESONET REPORT.

&&

EVENT NUMBER LUB1700351

JWJ
Special weather statement, Oct 6, 11:10 PM CDT, 1 hour 47 minutes before
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Special weather statement, Oct 6, 11:27 PM CDT, 1 hour 30 minutes before
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Local storm report, Oct 6, 11:48 PM CDT, 1 hour 9 minutes before
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Special weather statement, Oct 6, 11:57 PM CDT, 1 hour before
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Local storm report, Oct 7, 12:30 AM CDT, 27 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 6, 8:38 PM CDTSevere Thunderstorm WarningLUBCastro, Parmer37 min
Oct 6, 8:54 PM CDTSevere Thunderstorm WarningLUBBailey, Castro, Lamb, Parmer36 min
Oct 6, 9:14 PM CDTSevere Thunderstorm WarningLUBCastro, Swisher31 min
Oct 6, 9:30 PM CDTSpecial Weather StatementLUBCastro30 min
Oct 6, 10:06 PM CDTSevere Thunderstorm WarningLUBBriscoe, Floyd, Hale, Swisher24 min
Oct 6, 10:26 PM CDTSevere Thunderstorm WarningLUBBriscoe, Floyd, Hale, Hall, Motley, Swisher34 min
Oct 6, 10:55 PM CDTAreal Flood AdvisoryLUBLubbock2 hr
Oct 6, 10:59 PM CDTSevere Thunderstorm WarningLUBBriscoe, Childress, Cottle, Floyd, Hale, Hall and 1 more31 min
Oct 6, 11:10 PM CDTSpecial Weather StatementLUBCrosby, Lubbock35 min
Oct 6, 11:27 PM CDTSpecial Weather StatementLUBChildress, Hall33 min
Oct 6, 11:57 PM CDTSpecial Weather StatementLUBCrosby, Dickens33 min
Oct 7, 12:25 AM CDTSevere Thunderstorm WarningLUBCottle, Dickens, King, Motley35 min

Nearby

Severe Thunderstorm Warnings in Texas, 2017Every severe thunderstorm warning in 2017

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.