Across the Corn Belt, the recent spell of record-setting warmth has ended.  In the eastern Corn Belt, strong thunderstorms preceded the blast of colder weather, with high winds, large hail, and isolated tornadoes reported Tuesday night into early Wednesday in Illinois, Indiana, Ohio, and Michigan.  Wednesday’s high temperatures will remain below 32°F in much of the upper Midwest, with gusty winds leading to wind-chill concerns.  In North Dakota, where calving and lambing were 12 and 24% complete, respectively, on February 25, this morning’s temperatures fell below 0°F.  

…