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Weather Underground Forecast for Friday, November 16, 2012.

Active weather spreads across the West on Friday, while the East remains cool and dry. A low pressure system off the coast of California will continue moving eastward and onshore on Friday. Flow around this system will continue to push moisture onshore, bringing scattered rain showers to most of California and snow showers to the Sierra Nevadas. Rainfall totals will range from a half of an inch to an inch, while snowfall totals in the Sierras will range from 3 to 6 inches above 7,000 feet. At the same time, another stronger low pressure system moves southward from the Gulf of Alaska and pushes a front toward the coast of the Pacific Northwest. Expect rain to spread into Washington and Oregon late on Friday, which will turn to snow as it reaches the mountains. Strong winds will accompany these systems with gusts up to 40 mph at higher elevations.

In the East, high pressure remains the dominant weather feature across the Plains and Eastern states, maintaining dry and cool conditions. Expect high temperatures to vary in the 30s and 40s in the North, while the Southeast will see highs in the 60s to lower 70s. A system lingering over the Gulf of Mexico may trigger a few more showers and thunderstorms from Florida through the Carolinas. Heavy rainfall and strong thunderstorm development are not likely in these areas.

Temperatures in the Lower 48 states Thursday have ranged from a morning low of 1 degrees at Alamosa, Colo. to a high of 82 degrees at Miami, Fla.