Alert archive / Texas / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 8, NWS Corpus Christi, TX

April 7, 2019Calhoun County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Apr 7, 2019, 10:09 AM CDT for Calhoun County, Texas. It was in force for 36 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 7, 2019, 10:09 AM CDT (15:09 UTC)
Expired: Apr 7, 2019, 10:45 AM CDT
In force: 36 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Calhoun County, TX

The radar

The Corpus Christi radar (KCRP), 114 km from the middle of the area, began a volume at 15:12 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 12:00Z, 3.2 hours before the alert went out and 106 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: 2894 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 528 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 309 m²/s²
Significant tornado parameter: 4.4
Supercell composite: 17.7

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 7, 9:08 AM CDT, 1 hour 1 minute earlier.

Area forecast discussion, Apr 7, 9:08 AM CDT, 1 hour 1 minute before

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Hazardous weather outlook, Apr 7, 4:07 AM CDT, 6 hours 2 minutes before

Hazardous Weather Outlook
National Weather Service Corpus Christi TX
407 AM CDT Sun Apr 7 2019

TXZ229>234-239>247-342>347-442-443-447-080915-
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-
407 AM CDT Sun Apr 7 2019

This hazardous weather outlook is for South Texas.

.DAY ONE...Today and Tonight

A Severe Thunderstorm Watch is in effect for all of South Texas
until 9 AM this morning.

Scattered to widespread thunderstorms are possible throughout the
day. Some of these storms could produce damaging winds, large
hail and frequent lightning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to relay reports of severe
weather and flooding. Use hashtags #ccspotter and #txwx

GMZ230-235-250-255-270-275-080915-
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-
407 AM CDT Sun Apr 7 2019

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

.DAY ONE...Today and Tonight

A Severe Thunderstorm Watch is in effect for the bays and
nearshore waters until 9 AM this morning.

Patchy sea fog will linger along the coast through mid morning.
Visibilities may briefly drop below 1 nautical mile at times.

Scattered to widespread thunderstorms are possible throughout the
day. Some of these storms could produce damaging winds, large
hail and frequent lightning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

TC

In the hours before

Local storm report, Apr 7, 8:44 AM CDT, 1 hour 25 minutes before

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Local storm report, Apr 7, 8:56 AM CDT, 1 hour 13 minutes before

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Special weather statement, Apr 7, 9:07 AM CDT, 1 hour 2 minutes before

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Local storm report, Apr 7, 9:18 AM CDT, 51 minutes before

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Special weather statement, Apr 7, 9:34 AM CDT, 35 minutes before

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Local storm report, Apr 7, 9:54 AM CDT, 15 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 7, 3:18 AM CDT	Special Weather Statement	CRP	Dimmit	27 min
Apr 7, 4:09 AM CDT	Special Weather Statement	CRP	La Salle	36 min
Apr 7, 4:24 AM CDT	Severe Thunderstorm Warning	CRP	La Salle, McMullen	51 min
Apr 7, 4:30 AM CDT	Special Weather Statement	CRP	Webb	30 min
Apr 7, 4:42 AM CDT	Severe Thunderstorm Warning	CRP	Live Oak, McMullen	48 min
Apr 7, 5:06 AM CDT	Special Weather Statement	CRP	Karnes	24 min
Apr 7, 5:13 AM CDT	Special Weather Statement	CRP	Webb	32 min
Apr 7, 5:17 AM CDT	Areal Flood Advisory	CRP	La Salle, Live Oak, McMullen	118 min
Apr 7, 5:19 AM CDT	Areal Flood Advisory	CRP	La Salle, Webb	116 min
Apr 7, 5:34 AM CDT	Special Weather Statement	CRP	McMullen	26 min
Apr 7, 5:40 AM CDT	Special Weather Statement	CRP	Jim Wells	35 min
Apr 7, 5:58 AM CDT	Flash Flood Warning	CRP	Live Oak, McMullen	2 hr
Apr 7, 6:04 AM CDT	Special Weather Statement	CRP	Live Oak	26 min
Apr 7, 6:20 AM CDT	Special Weather Statement	CRP	Live Oak	25 min
Apr 7, 6:33 AM CDT	Special Weather Statement	CRP	Jim Wells	27 min
Apr 7, 6:36 AM CDT	Special Weather Statement	CRP	Live Oak	24 min
Apr 7, 6:51 AM CDT	Severe Thunderstorm Warning	CRP	Bee, Duval, Jim Wells, Kleberg, Live Oak, Nueces and 1 more	39 min
Apr 7, 7:01 AM CDT	Tornado Warning	CRP	Bee, Live Oak	29 min
Apr 7, 7:27 AM CDT	Severe Thunderstorm Warning	CRP	Bee, Goliad, Nueces, Refugio, San Patricio	48 min
Apr 7, 7:54 AM CDT	Areal Flood Advisory	CRP	Bee, Goliad	2 hr
Apr 7, 8:03 AM CDT	Special Marine Warning	CRP		87 min
Apr 7, 8:04 AM CDT	Special Weather Statement	CRP	Kleberg	41 min
Apr 7, 8:15 AM CDT	Severe Thunderstorm Warning	CRP	Aransas, Bee, Calhoun, Goliad, Nueces, Refugio and 2 more	45 min
Apr 7, 8:23 AM CDT	Severe Thunderstorm Warning	CRP	Kleberg, Nueces	37 min
Apr 7, 8:49 AM CDT	Special Marine Warning	CRP		86 min
Apr 7, 8:55 AM CDT	Severe Thunderstorm Warning	CRP	Goliad, Victoria	50 min
Apr 7, 9:07 AM CDT	Special Weather Statement	CRP	Aransas	23 min
Apr 7, 9:34 AM CDT	Special Weather Statement	CRP	Calhoun	41 min
Apr 7, 10:08 AM CDT	Special Marine Warning	CRP		67 min
Apr 7, 11:09 AM CDT	Special Marine Warning	CRP		66 min

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.