A strong ice storm moves across four U.S. states, bringing winter weather and travel challenges. The state weather agency advises caution and preparedness. A powerful storm is expected to bring ice buildup and strong winds to Maryland, Virginia, West Virginia, and Pennsylvania through Thursday, according to the National Weather Service (NWS).The affected areas reportedly include north-central and western Maryland, northwest Virginia, eastern and panhandle West Virginia, and central and western Pennsylvania…..