A strong low pressure will push heavy rain and mountain snow into the Northwest today while a developing storm will bring the season`s first snowflakes to interior New England and the eastern Great Lakes. In between coasts, the autumn doldrums of sunshine and mild temperatures will prevail.

WeatherBug Meteorologist Rachel Peterson has the latest in her exclusive WeatherBug National Outlook.

After a week of tranquil weather, another Northwest storm will rush ashore, bringing back a heavy rain and mountain snow threat. Two to three inches of downpours will cause flash flooding problems in western Washington, Oregon into extreme northern California. The snow will mainly fall in the northern Cascades above 6,000 feet with generally light accumulations.

On the opposite coast, a developing storm system will clash with cold air from Canada to produce light snow in New England. A couple inches of heavy, wet snow will brush the mountains of interior New England as well as the lake-effect snow belts of southwestern New York and northwestern Pennsylvania. A few flurries will even crest the high elevations of the Allegheny Mountains in Pennsylvania, western Maryland and West Virginia.

Aside from those two stormy areas, a few pesky showers will sneak up on central and southern Florida. Otherwise, high pressure will keep the skies deep blue from the Carolina coast to the northern Rockies.

The Great Lakes and Northeast won`t get spared the chilly autumn weather with highs in the 30s. The mercury will climb to the 50s from the mid-Mississippi Valley to the central Appalachians with the mild 60s, 70s and 80s stretching from the Carolina coast to Florida and spiking into the western High Plains.

The West will enjoy 50s and 60s with cooler 30s in the Cascades. The hot spot of the day will be Phoenix where the mercury will push the 90-degree mark.

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