Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 14, NWS Corpus Christi, TX

April 18, 2019Kleberg County, Nueces County, San Patricio County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Apr 18, 2019, 5:03 AM CDT for Kleberg County, Nueces County, San Patricio County, Texas. It was in force for 42 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 18, 2019, 5:03 AM CDT (10:03 UTC)
Expired: Apr 18, 2019, 5:45 AM CDT
In force: 42 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Kleberg County, TX, Nueces County, TX, San Patricio County, TX

The radar

The Corpus Christi radar (KCRP), 9 km from the middle of the area, began a volume at 10:03 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, 10.1 hours before the alert went out and 22 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: 2282 J/kg
Mixed-layer CIN: -226 J/kg
Mixed-layer LCL: 625 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 124 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.7

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 18, 4:12 AM CDT, 51 minutes earlier.

Area forecast discussion, Apr 18, 4:12 AM CDT, 51 minutes before

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Hazardous weather outlook, Apr 17, 5:24 AM CDT, 23 hours 39 minutes before

Hazardous Weather Outlook
National Weather Service Corpus Christi TX
524 AM CDT Wed Apr 17 2019

TXZ229>234-239>247-342>347-442-443-447-181030-
La Salle-McMullen-Live Oak-Bee-Goliad-Victoria-Webb-Duval-
Jim Wells-Inland Kleberg-Inland Nueces-Inland San Patricio-
Coastal Aransas-Inland Refugio-Inland Calhoun-Coastal Kleberg-
Coastal Nueces-Coastal San Patricio-Aransas Islands-
Coastal Refugio-Coastal Calhoun-Kleberg Islands-Nueces Islands-
Calhoun Islands-
524 AM CDT Wed Apr 17 2019

This hazardous weather outlook is for South Texas.

.DAY ONE...Today and Tonight

There is a moderate risk of rip currents for Gulf facing beaches
today.

There is a slight chance for severe thunderstorms north of a line
from Laredo to Victoria. There is a marginal risk of severe
thunderstorms for most of the rest of South Texas. Large hail and
strong winds are the primary threats.

No other hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

There is a moderate risk of rip currents for Gulf facing beaches
Thursday.

There is a chance of thunderstorms Tuesday and Tuesday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible.

GMZ230-235-250-255-270-275-181030-
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-
524 AM CDT Wed Apr 17 2019

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

.DAY ONE...Today and Tonight

A Small craft advisory is in effect tonight for offshore areas.
Scattered to numerous showers and thunderstorms are possible
tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Small Craft Advisory conditions are likely Thursday night into
Friday due to offshore flow.  A Small Craft Advisory may also be
needed Saturday night through Sunday night.

In the hours before

Special weather statement, Apr 18, 3:31 AM CDT, 1 hour 32 minutes before

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Special weather statement, Apr 18, 3:42 AM CDT, 1 hour 21 minutes before

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Special weather statement, Apr 18, 4:24 AM CDT, 39 minutes before

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Local storm report, Apr 18, 4:30 AM CDT, 33 minutes before

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Special weather statement, Apr 18, 4:40 AM CDT, 23 minutes before

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Special weather statement, Apr 18, 5:01 AM CDT, 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 12:04 AM CDT	Special Weather Statement	CRP	Webb	56 min
Apr 18, 12:30 AM CDT	Special Weather Statement	CRP	La Salle, Live Oak, McMullen, Webb	60 min
Apr 18, 12:45 AM CDT	Special Weather Statement	CRP	La Salle	60 min
Apr 18, 1:01 AM CDT	Severe Thunderstorm Warning	CRP	La Salle	44 min
Apr 18, 1:43 AM CDT	Special Weather Statement	CRP	Bee, Live Oak, McMullen	62 min
Apr 18, 2:00 AM CDT	Severe Thunderstorm Warning	CRP	Bee, Goliad, Victoria	45 min
Apr 18, 2:01 AM CDT	Special Weather Statement	CRP	La Salle	44 min
Apr 18, 2:13 AM CDT	Special Weather Statement	CRP	Webb	62 min
Apr 18, 2:20 AM CDT	Severe Thunderstorm Warning	CRP	Webb	40 min
Apr 18, 2:27 AM CDT	Severe Thunderstorm Warning	CRP	La Salle, McMullen	33 min
Apr 18, 2:58 AM CDT	Special Weather Statement	CRP	Duval	47 min
Apr 18, 3:05 AM CDT	Severe Thunderstorm Warning	CRP	Duval, Webb	40 min
Apr 18, 3:14 AM CDT	Special Weather Statement	CRP	Aransas, Calhoun, Jim Wells, Kleberg, Nueces, Refugio and 2 more	61 min
Apr 18, 3:31 AM CDT	Special Weather Statement	CRP	McMullen	44 min
Apr 18, 3:42 AM CDT	Special Weather Statement	CRP	Jim Wells	48 min
Apr 18, 4:24 AM CDT	Special Weather Statement	CRP	Bee, San Patricio	51 min
Apr 18, 4:33 AM CDT	Special Marine Warning	CRP		57 min
Apr 18, 4:40 AM CDT	Special Weather Statement	CRP	Kleberg, Nueces	50 min
Apr 18, 5:01 AM CDT	Special Weather Statement	CRP	Aransas, Nueces, Refugio, San Patricio	44 min
Apr 18, 5:07 AM CDT	Special Marine Warning	CRP		53 min
Apr 18, 5:15 AM CDT	Special Weather Statement	CRP	Bee	45 min
Apr 18, 5:23 AM CDT	Special Marine Warning	CRP		52 min
Apr 18, 5:39 AM CDT	Special Weather Statement	CRP	Aransas, Nueces, Refugio, San Patricio	66 min
Apr 18, 5:54 AM CDT	Special Marine Warning	CRP		2 hr
Apr 18, 6:16 AM CDT	Special Weather Statement	CRP	Kleberg	29 min
Apr 18, 6:18 AM CDT	Areal Flood Advisory	CRP	Nueces	117 min
Apr 18, 6:21 AM CDT	Special Weather Statement	CRP	Victoria	39 min
Apr 18, 7:27 AM CDT	Special Marine Warning	CRP		93 min
Apr 18, 3:14 PM CDT	Small Craft Advisory	CRP		15 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2019 Every severe thunderstorm warning in 2019

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.