The nation's weather
Updated 5:31 am, Thursday, October 20, 2016
Weather Underground Forecast for Thursday, October 20, 2016
A frontal system will bring active weather to the eastern third of the country on Thursday, while a Pacific system shifts over the Northwest.
A low pressure area will continue to deepen as it moves northeastward from the Ohio Valley to the northern Mid-Atlantic. This system will usher moderate to heavy rain and embedded thunderstorms over the Northeast. Flash flooding will be a concern for Upstate New York, western New York, western Pennsylvania and northeast Ohio. A mixture of rain and snow will also be possible along the western periphery of the low pressure system, focusing over the upper Midwest. A cold frontal boundary associated with this system will extend southwestward from the Ohio Valley to the southern Plains. Showers and thunderstorms will fire up along and near this frontal boundary over the northern Mid-Atlantic, the Appalachians, the Midwest, the Tennessee Valley, the lower Mississippi Valley and the western Gulf Coast. Additionally, a tropical disturbance will bring chances of storms to southeast Florida.
Meanwhile, a cold frontal boundary will shift east northeastward across the Northwest. Light to moderate rain and high elevation snow will be possible in Washington, Oregon, northern Idaho and Montana. High pressure will keep conditions warm and dry across most of the Southwest on Thursday.
Temperatures in the Lower 48 states Wednesday have ranged from a morning low of 16 degrees at Ely, Nev. to a high of 97 degrees at McAllen, Texas