Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 16, NWS Corpus Christi, TX

April 14, 2018La Salle County, McMullen County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Apr 14, 2018, 12:25 AM CDT for La Salle County, McMullen County, Texas. It was in force for 50 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: Apr 14, 2018, 12:25 AM CDT (05:25 UTC)
Expired: Apr 14, 2018, 1:15 AM CDT
In force: 50 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties La Salle County, TX, McMullen County, TX

The radar

The Corpus Christi radar (KCRP), 144 km from the middle of the area, began a volume at 05:28 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

Corpus Christi, TX (KCRP), launched 00:00Z, 5.4 hours before the alert went out and 162 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: 2973 J/kg
Mixed-layer CIN: -191 J/kg
Mixed-layer LCL: 1298 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.8

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 Corpus Christi, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 13, 10:36 PM CDT, 1 hour 49 minutes earlier.

Area forecast discussion, Apr 13, 10:36 PM CDT, 1 hour 49 minutes before

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Hazardous weather outlook, Apr 13, 5:55 AM CDT, 18 hours 30 minutes before

Hazardous Weather Outlook
National Weather Service Corpus Christi TX
555 AM CDT Fri Apr 13 2018

TXZ229>234-239>247-141100-
La Salle-McMullen-Live Oak-Bee-Goliad-Victoria-Webb-Duval-
Jim Wells-Kleberg-Nueces-San Patricio-Aransas-Refugio-Calhoun-
555 AM CDT Fri Apr 13 2018

This hazardous weather outlook is for South Texas.

.DAY ONE...Today and Tonight

A few strong to severe thunderstorms will be possible late
tonight/early Saturday morning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

A Fire Weather Watch is in effect for Saturday Afternoon for the
western portions of South Texas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

GMZ230-235-250-255-270-275-141100-
Bays and Waterways from Baffin Bay to Port Aransas-
Bays and Waterways from Port Aransas to Port O'Connor-
Coastal waters from Baffin Bay to Port Aransas out 20 NM-
Coastal waters from Port Aransas to Matagorda Ship Channel out
20 NM-Waters from Baffin Bay to Port Aransas from 20 to 60 NM-
Waters from Port Aransas to Matagorda Ship Channel from 20 to
60 NM-
555 AM CDT Fri Apr 13 2018

This hazardous weather outlook is for the Middle Texas
Coastal Waters.

.DAY ONE...Today and Tonight

Small Craft Advisory in effect this morning along the southern
bays and through today over the Gulf waters.

A few strong to severe thunderstorms will be possible late
tonight/early Saturday morning.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Small Craft Advisory conditions are expected behind a cold front
Saturday. Brief gusts to near gale force possible Saturday. Small
Craft Advisory conditions will continue in the gulf waters for a
time Saturday night. Small Craft Advisory conditions expected again
Tuesday afternoon into Tuesday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Apr 13, 11:46 PM CDT, 39 minutes before

Special Weather Statement
National Weather Service Corpus Christi TX
1146 PM CDT FRI APR 13 2018

TXZ229-230-239-140545-
McMullen-Webb-La Salle-
1146 PM CDT FRI APR 13 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTH CENTRAL WEBB...LA
SALLE AND NORTHWESTERN MCMULLEN COUNTIES...

At 1145 PM CDT, radar indicated strong thunderstorms were located
along a line extending from near Big Foot to 6 miles north of
Catarina. Movement was east at 35 mph.

Winds in excess of 40 mph and half inch hail are possible with these
storms.

Locations impacted include...
Cotulla, Encinal, Las Tiendas, Gardendale, Zella, Woodward,
Fowlerton, La Esperanza Ranch Airport, Millett, Los Angeles, Artesia
Wells and Callaghan.

LAT...LON 2820 9940 2864 9940 2864 9854 2772 9957
      2820 9983
TIME...MOT...LOC 0445Z 286DEG 29KT 2904 9893 2845 9963

TE

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 11:46 PM CDT	Special Weather Statement	CRP	La Salle	59 min
Apr 14, 1:00 AM CDT	Special Weather Statement	CRP	Bee, Goliad, Victoria	60 min
Apr 14, 1:14 AM CDT	Special Weather Statement	CRP	Jim Wells, Live Oak, McMullen, San Patricio	46 min
Apr 14, 1:45 AM CDT	Severe Thunderstorm Warning	CRP	Aransas, Bee, Calhoun, Goliad, Live Oak, Refugio and 2 more	45 min
Apr 14, 1:58 AM CDT	Severe Thunderstorm Warning	CRP	Jim Wells, Kleberg, Nueces, San Patricio	32 min
Apr 14, 1:59 AM CDT	Special Marine Warning	CRP		91 min
Apr 14, 2:29 AM CDT	Severe Thunderstorm Warning	CRP	Aransas, Kleberg, Nueces, San Patricio	31 min
Apr 14, 2:32 AM CDT	Severe Thunderstorm Warning	CRP	Aransas, Calhoun, Refugio	28 min
Apr 14, 2:49 AM CDT	Special Marine Warning	CRP		86 min
Apr 14, 2:58 AM CDT	Special Weather Statement	CRP	Aransas, Calhoun, Kleberg, Nueces, Refugio, San Patricio and 1 more	62 min
Apr 14, 4:09 AM CDT	Red Flag Warning	CRP	Duval, Jim Wells, La Salle, Live Oak, McMullen, Webb	15 hr
Apr 14, 4:12 AM CDT	Special Marine Warning	CRP		63 min
Apr 14, 4:16 AM CDT	Special Weather Statement	CRP	Bee	44 min
Apr 14, 8:40 AM CDT	Special Weather Statement	CRP	Nueces	35 min
Apr 14, 8:56 AM CDT	Special Weather Statement	CRP	San Patricio	34 min
Apr 14, 9:01 AM CDT	Special Weather Statement	CRP	Refugio	29 min
Apr 14, 9:21 AM CDT	Special Weather Statement	CRP	Kleberg	24 min
Apr 14, 10:11 AM CDT	Special Weather Statement	CRP	Nueces	19 min
Apr 14, 10:16 AM CDT	Special Weather Statement	CRP	Live Oak	14 min
Apr 14, 12:15 PM CDT	Gale Warning	CRP		4 hr

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.