Alert archive / Texas / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 58, NWS Houston/Galveston, TX

April 22, 2003Austin County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 22, 2003, 11:38 AM CDT for Austin County, Texas. It was in force for 37 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 22, 2003, 11:38 AM CDT (16:38 UTC)
Expired: Apr 22, 2003, 12:15 PM CDT
In force: 37 min
Issued by: NWS Houston/Galveston, TX
Area: Counties, with a storm outline in the text

County Austin County, TX

The radar

The Houston radar (KHGX), 125 km from the middle of the area, began a volume at 16:40 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

Lake Charles Mun, LA (KLCH), launched 12:00Z, 4.6 hours before the alert went out and 298 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: 1943 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 107 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 22, 9:52 AM CDT, 1 hour 46 minutes earlier.

Area forecast discussion, Apr 22, 9:52 AM CDT, 1 hour 46 minutes before

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Hazardous weather outlook, Apr 22, 7:00 AM CDT, 4 hours 38 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 22, 10:54 AM CDT	Severe Thunderstorm Warning	HGX	Washington	51 min
Apr 22, 11:58 AM CDT	Severe Thunderstorm Warning	HGX	Waller	32 min
Apr 22, 12:25 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Montgomery	35 min
Apr 22, 3:58 PM CDT	Severe Thunderstorm Warning	HGX	Polk, San Jacinto, Walker	47 min

Nearby

Severe Thunderstorm Warnings in Texas, 2003 Every severe thunderstorm warning in 2003

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.