Alert archive / Texas / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 363

May 31, 200412 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at May 31, 2004, 11:15 PM CDT for 12 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: May 31, 2004, 11:15 PM CDT (04:15 UTC)
Expired: Jun 1, 2004, 2:00 AM CDT
In force: 3 hr
Issued by: the Storm Prediction Center

Counties Austin County, TX, Brazoria County, TX, Brazos County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Galveston County, TX, Grimes County, TX, Harris County, TX, Montgomery County, TX, Waller County, TX, Washington County, TX

The radar

The Houston radar (KHGX), 85 km from the middle of the area, began a volume at 04:19 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.

Warnings issued inside it

2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 31, 11:50 PM CDT	Severe Thunderstorm Warning	HGX	Brazos, Madison	40 min
Jun 1, 1:00 AM CDT	Severe Thunderstorm Warning	HGX	Brazos	60 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

Mesoscale Discussion 1031May 31, 11:31 PM CDT

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 4.3 hours before the alert went out and 246 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: 3364 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 794 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 31, 9:45 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Bell, Brazos, Cherokee, Ellis, Falls and 19 more	4 hr
May 31, 11:31 PM CDT	Mesoscale Discussion	SPC	Anderson, Austin, Bell, Brazoria, Brazos, Burleson and 33 more	59 min
Jun 1, 1:35 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Angelina, Bastrop, Bell, Blanco, Brazos and 49 more	5 hr
Jun 1, 3:41 AM CDT	Mesoscale Discussion	SPC	Anderson, Angelina, Bastrop, Bell, Blanco, Brazos and 50 more	94 min
Jun 1, 6:42 AM CDT	Mesoscale Discussion	SPC	Angelina, Houston, Jasper, Nacogdoches, Newton, Panola and 6 more	2 hr
Jun 1, 2:43 PM CDT	Mesoscale Discussion	SPC	Anderson, Bastrop, Bell, Blanco, Bosque, Brazos and 55 more	2 hr
Jun 1, 3:50 PM CDT	Tornado Watch	SPC	Archer, Bandera, Baylor, Blanco, Bosque, Brown and 46 more	6 hr
Jun 1, 5:04 PM CDT	Mesoscale Discussion	SPC	Anderson, Collin, Dallas, Delta, Denton, Ellis and 22 more	86 min
Jun 1, 5:20 PM CDT	Tornado Watch	SPC	Bell, Collin, Cooke, Dallas, Delta, Denton and 22 more	5 hr
Jun 1, 6:59 PM CDT	Mesoscale Discussion	SPC	Angelina, Austin, Bastrop, Brazos, Burleson, Caldwell and 25 more	91 min

Nearby

Severe Thunderstorm Watches in Texas, 2004 Every severe thunderstorm watch in 2004

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.