Watson said the risks of 9-inch-plus snows in Baltimore rose to 62 percent when she used Pacific wind data, rather than sea surface temperatures, to establish when the El Nino events began and ended. The alternate statistical approach dropped the quiet winter of 1994-95 from the mix, and added the winter of 1992-93.
In March 1993, a deadly blizzard was generated by a vast storm system with outer bands stretching from Cuba to the Canadian Maritime provinces. The storm killed more than 200 people and dropped up to three feet of snow from the deep south to New England.
