The nation's weather

WEATHER UNDERGROUND - For The Associated Press
Moist onshore flow and waves of energy from the Pacific will produce more areas of valley rain and mountain snow from the Pacific Northwest through the Northern Rockies.  Meanwhile, a disturbance will bring snow showers to the Great Lakes.
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Moist onshore flow and waves of energy from the Pacific will produce more areas of valley rain and mountain snow from the Pacific Northwest through the Northern Rockies. Meanwhile, a disturbance will bring snow showers to the Great Lakes.

Multiple systems will continue bringing wet weather to the Pacific Northwest on Friday.

Another trough of low pressure moves over Oregon and Washington, while the previous wave of low pressure will push eastward. Temperatures will remain on the warmer side, bringing mainly rain showers to the region. Snow showers will be contained to the highest mountain passes, due to warm southerly air pushing snow levels up to 6,000 feet. Strong winds will persist with gusts up to 45 mph again Friday. This system will take a more northern track and is not likely to reach into the Sierras. However, the extremely northern regions of California will see periods of scattered rain showers. The previous wave of low pressure will move over the Northern Rockies and reach into the Northern Plains. The system will trigger rain showers over Montana and Wyoming, but kick up snow once it reaches the cool conditions of the Plains. Expect snowfall totals between 1 to 2 inches in the Dakotas.

Farther east, a trough of low pressure sweeps over the Great Lakes and will create more downwind lake effect snow showers. Expect 1 to 3 inches of snow over western New York state and around 2 inches in western Michigan. Lighter snowfall is likely across the rest of the Great Lakes region.

To the South, high pressure dominates over the Southeast and pushes moisture into the Gulf of Mexico. This will bring sunny skies and mild temperatures to the Central and Southern Plains, as well as the Southeast and Gulf state. However, onshore flow over the western shore of the Gulf will kick up clouds with a few scattered rain showers over eastern Texas and eastern Mexico.

Temperatures in the Lower 48 states Thursday ranged from a morning low of -13 degrees at Audubon, Iowa, to a high of 75 degrees at El Centro, Calif.