Weather Underground Forecast for Wednesday, Dec. 11, 2013
A cold frontal boundary is expected to extend from Texas to Michigan on Wednesday, while a separate frontal boundary will stretch across the Intermountain West.
Lake effect snow will begin to push across parts of the Northeast on Wednesday as an abundance of moisture associated with a cold front moves across the Great Lakes. Snowy conditions will affect the upper Midwest, the Ohio Valley and the Northeast, while the heaviest snow will fall in parts of Pennsylvania and New York. This system will also bring blustery conditions to the upper Midwest and Northeast, as gusty winds and sub freezing conditions will persist across the region. Meanwhile, a ridge of high pressure will keep the majority of the Southeast clear of wet weather, although an onshore flow along southern Florida will trigger showers over the state.
A separate frontal boundary will stretch southward across the Intermountain West on Wednesday. Snowy conditions will be possible across parts of Idaho and Montana, while gusty winds and cold temperatures will continue to impact the Rocky Mountains. An onshore flow along the coast of Washington will also initiate rainy conditions along western Washington, as well as snow showers over the Cascades. A ridge of high pressure over the Great Basin will keep the Southwest clear of wet weather on Wednesday, as offshore, Santa Ana winds will push across California.
Temperatures in the Lower 48 states Tuesday have ranged from a morning low of -32 degrees at Crane Lake, Minn. to a high of 93 degrees at Mississippi Canyon, La.