Joseph Mezo uses an umbrella as he walks to work in light sleet and icey conditions Friday morning, Dec. 6, 2013, in Dallas. (AP Photo/LM Otero) Winter Storm Cleon has already delivered more than a foot of snow to parts of the Rockies and the Upper Midwest. As we head through Thursday and Friday, Cleon will spread a significant swath of snow and ice from the southern Plains into parts of the mid-Mississippi Valley and Ohio Valley. Dallas/Ft. Worth, Oklahoma...

SANTA ANA, Calif.-- After the orange harvesting and the sun sets, the toughest part of John S. Gless' day is just beginning: a desperate fight to stave off a cold spell threatening to destroy his citrus crop. The vice president and manager of Gless Ranch, which grows oranges, lemons and grapefruit on 5,000 acres 100 miles north of Los Angeles, spends his nights shuttling from field to field where costly wind machines are warming up the groves by a few...

Cold weather has forced thousands of flights to be cancelled or delayed across the country, leaving many travelers frustrated for yet another day. The tracking website Flightaware.com estimates more than 2,000 flights were cancelled nationwide as of Sunday afternoon and more than 6,000 flights were delayed. That follows two days of similarly difficult travel conditions. Cold weather has affected much of the country, but hit Dallas-Fort Worth International Airport particularly hard. The airport said more than 400 departures were cancelled...