Weather Underground Forecast for Saturday, November 24, 2012.
Rain and snow showers will continue for the Great Lakes, while the Northwest will see more mountain snow showers. A low pressure system over the Great Lakes will continue to move further into Canada on Saturday, pulling a cold front northeastward. This will allow for rain showers to diminish for the early in the day, while the back side of the system continues pushing cool air over the Great Lakes. As this flow over the Great Lakes picks up additional moisture, it will produce lake effect snow showers along the downwind shores throughout the day. Winter weather advisories have been issued for northwestern New York as some areas may see up to 6 inches of new snow. Periods of heavy snowfall is likely in these areas with snowfall rates from 1 to 2 inches per hour. Cold air pouring in behind this system will allow for chilly conditions to persist for the Upper Midwest, Great Lakes, and into the Ohio River Valley. Expect highs to range in the 30s across most of these areas, which is about 5 to 15 degrees below seasonable.
Meanwhile out West, a trough of low pressure makes its way over the Pacific Northwest and into the Northern Rockies. This will continue pushing a cold front southeastward, producing more rain and mountain snow showers. Strong winds will also develop along this front with gusts from 45 to 55 mph in the mountains. Expect 4 to 8 inches of new snow across Montana, while another 3 to 6 inches are likely in the Cascades. A ridge of high pressure to the south will keep this front out of northern California, the Great Basin, and the Central Rockies. Expect another dry, sunny, and pleasant day in these areas.
Temperatures in the Lower 48 states Friday have ranged from a morning low of 1 degrees at Williston, N.D. to a high of 84 degrees at Brownsville, Texas