Weather across the nation on Novembe 30, 2016

An area of low pressure shifted eastward over the upper Mississippi Valley and the Great Lakes.

Cold air trailed this system, which allowed for snow showers to develop in the northern Plains. Lead, South Dakota, reported a midday total of 2 feet of snow. Underwood, North Dakota, reported a midday total of 20 inches of snow.

A mixture of rain and snow also developed across the upper Midwest on Wednesday. A cold frontal boundary associated with this system extended south southwestward from the eastern Great Lakes to the western Gulf Coast. Strong to severe thunderstorms broke out across portions of the Deep South and the southern Appalachians.

Cardell, Georgia, reported a tornado that damaged a roof and downed multiple trees and power lines. Westwego, Louisiana, reported a tornado that produced winds of up to 85 mph. A warm frontal boundary also extended eastward over the northern Mid-Atlantic. Showers and embedded thunderstorms developed from the eastern Great Lakes to southern New England.

Meanwhile, another frontal system shifted across the Pacific Northwest, the Great Basin and northern California. Light to moderate rain affected northwest Oregon and western Washington, while snow showers developed from the Cascades to the Rockies.

Winter weather advisories were issued in parts of the Cascades and the northern Rockies. Most of the Southwest experienced cool and dry weather. Los Angeles recorded a midday high of 66 degrees. Phoenix, Arizona, recorded a midday high of 57 degrees.

WEDNESDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................86 Waycross, Ga.

HIGHEST HEAT INDEX (DEGREES F)..........................89 Key West NAF, Fla.

LOWEST TEMPERATURE (DEGREES F)..........................-8 Bryce Canyon, Utah

LOWEST WIND CHILL (DEGREES F)...........................-60 Shungnak AP, Shungnak, AK, Alaska

HIGHEST WIND GUST (MPH).................................56 St. George, Alaska

HIGHEST PRECIPITATION (INCHES)..........................4.71 Knoxville, Tenn.

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