Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 134, NWS Lubbock, TX

June 13, 2018Castro County, Swisher County, Texas

NWS Lubbock, TX issued this severe thunderstorm warning at Jun 13, 2018, 5:00 AM CDT for Castro County, Swisher County, Texas. It was in force for 18 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: Jun 13, 2018, 5:00 AM CDT (10:00 UTC)
Expired: Jun 13, 2018, 5:18 AM CDT
In force: 18 min
Issued by: NWS Lubbock, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

Counties Castro County, TX, Swisher County, TX

The radar

The Amarillo radar (KAMA), 83 km from the middle of the area, began a volume at 10:00 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, 10.0 hours before the alert went out and 82 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: 1665 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 2531 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 275 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 13.3

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 Jun 13, 3:36 AM CDT, 1 hour 24 minutes earlier.

Area forecast discussion, Jun 13, 3:36 AM CDT, 1 hour 24 minutes before

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Hazardous weather outlook, Jun 13, 3:36 AM CDT, 1 hour 24 minutes before

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In the hours before

Special weather statement, Jun 13, 12:20 AM CDT, 4 hours 40 minutes before

Special Weather Statement
National Weather Service Lubbock TX
1220 AM CDT WED JUN 13 2018

TXZ022>024-130545-
Briscoe TX-Swisher TX-Castro TX-
1220 AM CDT WED JUN 13 2018

...SIGNIFICANT WEATHER ADVISORY FOR CASTRO...SWISHER AND NORTHWESTERN
BRISCOE COUNTIES UNTIL 1245 AM CDT...

At 1218 AM CDT, Doppler radar was tracking a thunderstorm outflow
boundary along a line extending from near Hereford to 7 miles
southeast of Buffalo Lake to 11 miles northeast of Wayside. Movement
was south at 30 mph.

Wind gusts of 50 to 55 mph will be possible with this boundary which
is well south of the thunderstorm activity.

Locations impacted include...
Tulia, Dimmitt, Silverton, Happy, Easter, Mackenzie Reservoir and
Nazareth.

A severe thunderstorm watch remains in effect until 200 AM CDT for
the Panhandle of Texas.

LAT...LON 3475 10127 3446 10116 3445 10251 3475 10249
TIME...MOT...LOC 0518Z 352DEG 25KT 3490 10238 3481 10205 3493 10144

26

Local storm report, Jun 13, 2:40 AM CDT, 2 hours 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LUBBOCK TX
240 AM CDT WED JUN 13 2018

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

0240 AM     TSTM WND GST     2 NNE CHILDRESS         34.46N 100.20W
06/13/2018  M58 MPH          CHILDRESS          TX   MESONET

            WEST TEXAS MESONET REPORT

&&

EVENT NUMBER LUB1800194

JWJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 12:20 AM CDT	Special Weather Statement	LUB	Briscoe, Castro, Swisher	25 min
Jun 13, 1:01 AM CDT	Severe Thunderstorm Warning	LUB	Briscoe, Swisher	59 min
Jun 13, 1:23 AM CDT	Severe Thunderstorm Warning	LUB	Briscoe, Swisher	67 min
Jun 13, 2:10 AM CDT	Areal Flood Advisory	LUB	Briscoe, Swisher	2 hr
Jun 13, 2:46 AM CDT	Areal Flood Advisory	LUB	Briscoe, Childress, Hall	119 min
Jun 13, 2:57 AM CDT	Areal Flood Advisory	LUB	Castro, Swisher	2 hr
Jun 13, 5:32 AM CDT	Areal Flood Advisory	LUB	Castro, Swisher	118 min
Jun 13, 7:30 AM CDT	Special Weather Statement	LUB	Parmer	30 min

Nearby

Severe Thunderstorm Warnings in Texas, 2018 Every severe thunderstorm warning in 2018

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.