Alert archive / Texas / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 91, NWS Austin/San Antonio, TX

May 18, 1993Williamson County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at May 18, 1993, 12:07 PM CDT for Williamson County, Texas. It was in force for 53 min.

The area

The counties it named.

The facts

Issued: May 18, 1993, 12:07 PM CDT (17:07 UTC)
Expired: May 18, 1993, 1:00 PM CDT
In force: 53 min
Issued by: NWS Austin/San Antonio, TX
Area: Whole counties

County Williamson County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 5.1 hours before the alert went out and 325 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: NaN m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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.

In the hours before

Special weather statement, May 18, 10:50 AM CDT, 1 hour 17 minutes before

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Special weather statement, May 18, 10:50 AM CDT, 1 hour 17 minutes before

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Special weather statement, May 18, 11:08 AM CDT, 59 minutes before

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Special weather statement, May 18, 11:08 AM CDT, 59 minutes before

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Special weather statement, May 18, 11:15 AM CDT, 52 minutes before

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Special weather statement, May 18, 11:15 AM CDT, 52 minutes before

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The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 17, 11:04 PM CDT	Severe Thunderstorm Warning	EWX	Val Verde	51 min
May 18, 8:53 AM CDT	Severe Thunderstorm Warning	EWX	Val Verde	37 min
May 18, 8:56 AM CDT	Severe Thunderstorm Warning	EWX	Edwards	64 min
May 18, 9:59 AM CDT	Severe Thunderstorm Warning	EWX	Kinney, Maverick	61 min
May 18, 11:18 AM CDT	Severe Thunderstorm Warning	EWX	Maverick, Zavala	57 min
May 18, 1:07 PM CDT	Tornado Warning	EWX	DeWitt	68 min
May 18, 1:45 PM CDT	Flash Flood Warning	EWX	Victoria	2 hr
May 18, 1:52 PM CDT	Tornado Warning	EWX	Victoria	68 min

Nearby

Severe Thunderstorm Warnings in Texas, 1993 Every severe thunderstorm warning in 1993

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.