Alert archive / Texas / Tornado Warnings in 1994

Tornado Warning 23, NWS Houston/Galveston, TX

October 18, 1994Jackson County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Oct 18, 1994, 9:42 AM CDT for Jackson County, Texas. It was in force for 33 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Oct 18, 1994, 9:42 AM CDT (14:42 UTC)
Expired: Oct 18, 1994, 10:15 AM CDT
In force: 33 min
Issued by: NWS Houston/Galveston, TX
Area: Whole counties

County Jackson County, TX

The radar

The Houston radar (KHGX), 156 km from the middle of the area, began a volume at 14:44 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.

What was reported inside it

Time	Report	Where	Remark
Oct 18, 9:42 AM CDT	Tornado F0	La Ward, TX	Trees were downed near La Ward.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 2.7 hours before the alert went out and 155 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: 2059 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 583 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 7.3

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 tornado 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 tornado warning went out at Oct 17, 2:30 PM CDT, 19 hours 12 minutes earlier.

Area forecast discussion, Oct 17, 2:30 PM CDT, 19 hours 12 minutes before

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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
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Chambers, Harris, Liberty, Montgomery, Polk, San Jacinto	7 hr
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Trinity, Walker	7 hr
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Austin, Colorado, Wharton	7 hr
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Brazoria, Fort Bend, Waller	7 hr
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Grimes, Washington	7 hr
Oct 18, 4:30 AM CDT	Flash Flood Warning	HGX	Galveston	7 hr
Oct 18, 5:28 AM CDT	Flash Flood Warning	HGX	Jackson	6 hr
Oct 18, 11:03 AM CDT	Tornado Warning	HGX	Matagorda	27 min

Nearby

Tornado Warnings in Texas, 1994 Every tornado warning in 1994 Tornadoes in 1994

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.