...A Major Storm will produce widespread, significant weather impacts ofevery variety across large portions of the Central and Southern Plains,Midwest, South and Eastern U.S today through mid-week......A Major Winter Storm will bring several feet of snow and blizzardconditions to the Washington and Oregon Cascades through Tuesday...A pair of very deep, dynamic mid-latitude cyclones will have some weatherimpacts to nearly all portions of the U.S. with all but one U.S. state(North Dakota) not having a weather warning, watch or advisory in effectat this time.  Hazards ranging from winter impacts of significantsnowfall, including blizzard conditions, freezing rain and very highwinds, inducing low temperatures and accompanying wind chills; as well as,severe weather, including potentially significant tornadoes, severe windsand some hail; additionally, widespread and potentially significant riverand flash flooding.  Please keep weather aware over the next few days,especially when traveling taking necessary precautions prior to leaving,checking weather information regularly and heeding any warnings in effect.