http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=2967
Near-record atmospheric moisture for late April teamed up with an extremely strong jet stream to produce a fearsome night of severe weather over north Texas, mainly south of the Dallas-Fort Worth area. The most intense storms of the day developed by early afternoon southeast of Abilene, with one large supercell emerging at the south end of the complex. After producing several brief tornadoes and hail as large as softballs from a giant stacked-plate circulation, the storm grew even larger and more threatening after dark as it moved just south of the DFW area. Slowing and reoganizing, it dumped more than 5” of rain on some areas, according to Doppler radar estimates. At one point, there were three potentially tornadic circulations evident on Doppler radar along the storm’s south edge, a pattern eerily reminiscent of the deadly storm on May 30, 2013, that killed several storm chasers near El Reno, Oklahoma. Soon after midnight, the circulations congealed into a powerful comma-shaped bow echo that swept across the prairie with high winds (see Figure 1). Nineteen preliminary tornado reports were logged by NOAA's Storm Prediction Center in Texas on Sunday.
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