Weather Underground midday recap for Monday, April 15, 2013.
Wintry weather persisted across the North-Central U.S. on Monday as the strong storm system impacting the region lifted northeastward toward Lake Superior and southern Ontario, Canada. Moderate to heavy snow showers and strong winds continued from parts of North Dakota through northern Wisconsin and Michigan¼’s Upper Peninsula during the morning hours and led to additional snow accumulations of about 2 to 4 inches.
Meanwhile, rain showers developed along and near an associated cold front in portions of Iowa and Missouri eastward through parts of the Upper Great Lakes and western Ohio Valley. Additional rain and thunderstorms were possible near the southern portion of this boundary in areas of the southern Central Plains, the Ozarks, and the Mid-Mississippi Valley. These regions were at slight risk of severe thunderstorm development from late this afternoon through tonight with large hail, damaging wind gusts, and possible isolated tornadoes.
In the Southeast, a low pressure system developed along the southeastern coast by Monday morning, while the associated warm front became stationary along northeastern Gulf Coast through the afternoon. Scattered showers and thunderstorms continued near the eastern Gulf Coast, while lighter showers and thunderstorms remained possible in the southern Mid-Atlantic States.
Out West, another late season winter storm began to take shape over the Central Great Basin as a cold airmass surged southward and a developing system lifted from the Desert Southwest with moist, southwest flow. Light to moderate heavy snow showers fell across parts of the Central Great Basin and the Central Rockies. Further west, an upper trough of low pressure remained over the Pacific Northwest Coast and brought cool, showery weather to the Pacific Northwest and northern California.
Temperatures in the Lower 48 states Monday have ranged from a morning low of -2 degrees at Yellowstone, Wyo. to a midday high of 96 degrees at Falfurrias, Texas