HOUSTON (AP) – Winter's brutal grip on the US East is not letting up, with the coming days bringing subfreezing temperatures that will plunge deep into what had been a toasty Florida peninsula, and a powerful blizzard potentially striking the Atlantic coast. Deep cold is forecast to stick around at least into the first week of February. Meteorologists are also watching what could become a " bomb cyclone " – a quickly intensifying storm that's a winter version of a hurricane – forming off the