Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 6, NWS Corpus Christi, TX

March 27, 2018Webb County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Mar 27, 2018, 11:52 PM CDT for Webb County, Texas. It was in force for 38 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: Mar 27, 2018, 11:52 PM CDT (04:52 UTC)
Expired: Mar 28, 2018, 12:30 AM CDT
In force: 38 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon
Hail: 2.0 in
Wind: 70.0 mph

County Webb County, TX

The radar

The Corpus Christi radar (KCRP), 179 km from the middle of the area, began a volume at 04:55 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 27, 9:51 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 4.9 hours before the alert went out and 196 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: 2154 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 579 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 6.4

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 Mar 27, 10:31 PM CDT, 1 hour 21 minutes earlier.

Area forecast discussion, Mar 27, 10:31 PM CDT, 1 hour 21 minutes before

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Hazardous weather outlook, Mar 27, 10:55 PM CDT, 57 minutes before

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In the hours before

Local storm report, Mar 27, 10:35 PM CDT, 1 hour 17 minutes before

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Local storm report, Mar 27, 10:35 PM CDT, 1 hour 17 minutes before

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Special weather statement, Mar 27, 10:43 PM CDT, 1 hour 9 minutes before

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Local storm report, Mar 27, 10:46 PM CDT, 1 hour 6 minutes before

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Special weather statement, Mar 27, 11:15 PM CDT, 37 minutes before

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Special weather statement, Mar 27, 11:37 PM 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
Mar 27, 10:06 PM CDT	Severe Thunderstorm Warning	CRP	Webb	39 min
Mar 27, 10:41 PM CDT	Severe Thunderstorm Warning	CRP	Webb	34 min
Mar 27, 10:43 PM CDT	Special Weather Statement	CRP	La Salle	32 min
Mar 27, 10:53 PM CDT	Areal Flood Advisory	CRP	Webb	112 min
Mar 27, 11:15 PM CDT	Special Weather Statement	CRP	La Salle	30 min
Mar 27, 11:37 PM CDT	Special Weather Statement	CRP	Dimmit	38 min
Mar 28, 4:35 AM CDT	Rip Current Statement	CRP	Aransas, Calhoun, Kleberg, Nueces	47 hr
Mar 28, 12:17 PM CDT	Special Weather Statement	CRP	Live Oak	28 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.