Storm Events Database

Event Details

Event Thunderstorm Wind
Magnitude 70 kts.
County/Area CALHOUN
Report Source NWS Storm Survey
NCDC Data Source CSV
Begin Date 2012-04-02 03:50:00.0 CST-6
Begin Location 1SW PORT LAVACA
Begin Lat/Lon 28.61/-96.64
End Date 2012-04-02 03:55:00.0 CST-6
End Location 1N PORT LAVACA
End Lat/Lon 28.63/-96.63
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 250.00K
Crop Damage 10.00K
Episode Narrative During the late evening of April 1st, 2012 and the early morning hours of April 2nd, a strong to severe squall line developed across Mexico and then later moved through South Texas. An area of low pressure aloft located both over the Rockies and East Texas helped set the stage for isolated severe storms embedded within the line. The upper level forcing from these two areas of low pressure along with very unstable conditions helped to maintain the squall line as it moved eastward overnight. Straight-line winds averaged between 45 and 55 mph behind the squall line with isolated gusts over 60 mph.
However, as the squall line neared the town of Port Lavaca, a downburst embedded within the squall line produced winds up to 80 mph along a narrow 1/2 mile wide path that extended for nearly 2 miles in length. Radar images indicated winds over 70 mph at an elevation of nearly 6500 feet as the squall line entered Port Lavaca. Several telephone poles were snapped along with numerous large tree limbs down and a few uprooted trees. Minor roof damage also occurred at a business in Port Lavaca.
Event Narrative A NWS storm survey concluded that a downburst occurred in the city of Port Lavaca with estimated winds between up to 80 mph. Several homes in the path of the downburst sustained minor roof damage. Two telephone poles were snapped at their base. Numerous large tree limbs were down along with a few uprooted trees. The damage path was approximately a half mile wide and 2 miles in length, beginning near Alcoa Drive and extending northeast to near Travis Street to the south of Highway 35.


All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 270.00K 10.00K
TEXAS A AND I NUECES CO. TX 04/02/2012 02:45 CST-6 Thunderstorm Wind 50 kts. EG 0 0 10.00K 0.00K
SEADRIFT CALHOUN CO. TX 04/02/2012 03:45 CST-6 Hail 1.00 in. 0 0 10.00K 0.00K
PORT LAVACA CALHOUN CO. TX 04/02/2012 03:50 CST-6 Thunderstorm Wind 70 kts. EG 0 0 250.00K 10.00K
Totals: 0 0 270.00K 10.00K