Once again the Lunar declinational tidal effect is responsible but goes unmentioned, The moon was maximum North declination on the 1st of March, the solar declination seasonal tide is incoming from the South adding to the effect and making the resultant tropical air mass surge two days sooner than the usual, peak production on the day of Maximum North lunar declination and three days after.
I have had daily forecast maps for this expected precipitation posted for 51 months now;
Details on how it works are posted on the site, in the blog/research section.
You can watch the incoming lunar tidal bulge sweep in from the Southwest in their short movie, and the back side more polar air mass brings in the negative static/ionic charges that gave added power to the temperature front to drive the condensation high enough to generate the tornadoes.
Over the next three days as the fetch of moisture slides East across Texas into the Gulf states, and the moon starts to head South again, Just as we are having a heliocentric conjunction with Mars on the 3rd, this is very likely to bring on another round of tornadoes.(they got that part right anyway) see my maps for these days as well.
Last year the big outbreak was enhanced by the heliocentric conjunction with Saturn, on the 3rd of April, which will be occurring on the 15th of April this year, so you can expect more outbreaks to occur from the 4-10-2012 Maximum South lunar declination and four day after window, another much larger 2 or 3 day burst as the moon crosses the equator on 4-17-2012. Then the heavy action through the end of the month of April, ending in last hurrah of big snows into the first week of May. Appalachian Ice storm seems to be on the 3rd through 5th of May, buy your replacement power poles early.
[This is the first post in a string of ongoing comments at the inquiry of _Jim for further information. Click this link to see more of the thread]