VORTEX 95 High precision barogram obtained near the Allison, TX tornado

A turtle obtained high precision barometric pressure data approximately 1.6 km (1 mi) east of the Allison, TX tornado damage swath (2.4 km, 1.5 mi, east of damage swath center). This data will be compared to other turtle data obtained that day. A pressure deficit of about 3.5 mb correlates in time with the tornado's closest approach.

The barogram also relates to storm dynamics related to the dissipation of the Allison tornado and generation of another tornado 2.4 km (1.5 mi) south of the turtle experienced by Probe 2. A greater than 6 mb pressure deficit is somewhat correlated with the Probe 2 tornado. Storm motion to the northeast, which could have brought the storm closer to the turtle, may explain why the correlation with the Probe 2 report may be uncorrelated by 30 sec to 1 minute. Data are limited on the Probe 2 tornado. This barogram may add to that data.

*Work supported in part by a 1995 Southwest Missouri State University Summer Faculty Fellowship. #Appreciation is expressed to Dr. Bill Winn and Steve Hunyady for allowing me to ride with them during VORTEX-95.