Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 300 AM EST Tue Nov 12 2019 Valid 12Z Tue Nov 12 2019 - 12Z Thu Nov 14 2019 ... Widespread record cold spreading from the Plains eastward toward the East Coast... ...Early season snows across western to northern New York and northern New England will gradually taper off today... ...Active Lake Effect snows continue downwind of the Great Lakes... ...Persistent warm and dry weather over the West will continue to elevate fire weather threat for portions of southern California... The arctic airmass that has settled into the Plains will continue to spread record cold temperatures south and eastward into the Ohio Valley and down into the southern Plains today. By Wednesday morning, record low temperatures in the teens and 20s will be common along much of the East Coast, the Ohio Valley, and down as far south as the upper Texas coast, making it feel like the middle of winter for these areas. This latest arctic outbreak will begin to moderate on Thursday as the center of the expansive high pressure system begins to move off New England toward the Canadian Maritimes. In addition to the arctic chill, an area of low pressure developing along the arctic front is currently bringing a wide swath of snow from the Tennessee Valley, along the Appalachians and upstate New York into northern New England. Much of the snow is expected to taper off to flurries later today in these areas as the low pressure center rapidly intensifies and moves into the Canadian Maritimes. Rain will likewise move rapidly across the Deep South and the Southeast today before the arctic chill arrives. Florida will see the showers linger into Thursday. By early on Thursday, an upper-level disturbance arriving from northern Mexico will increase the chance of rain along the Gulf Coast as a coastal front forms just offshore. In contrast to the central and eastern U.S. record cold, much above average temperatures are expected across the West into the Great Basin and Rockies. The warm temperatures, low relative humidities and dry conditions will continue to elevate the threat of fire weather for portions of southern California into the Southwest over the next two days. The next upper-level disturbance moving onshore across the Pacific Northwest will spread snow and mixed precipitation through the interior sections of the Northwest and the northern Rockies today into tonight with light accumulations expected. The light snow and mixed precipitation are expected to move rapidly across the central Plains on Wednesday before reaching the Great Lakes early on Thursday. Kong Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php