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Storm Watch

Cool & wet Northeast, new system in Northwest
Mark Avery, Lead Meteorologist, The Weather Channel
Apr. 22, 2009 6:16 am ET

The slow moving system that has been moving across the country for the last week and a half is about to finally move out.

A surface low will move up the East Coast towards New England today, with an upper level disturbance moving around the trough over the Great Lakes and Northeast. Showery weather is expected over the Northeast and Great Lakes for most of today, with some snow mixing in over Michigan. While the precipitation winds down near the Lakes, it will pick up over New England later today into tonight, with additional heavy rain possible in parts of New England.

Over an inch of additional rain is possible for Eastern New England. Because of the combination of heavy rain and snow melt, a flood watch has been posted for portions of Maine.

Meanwhile on the other end of the country, a new system is moving into the Pacific Northwest today and tonight. This trough is expected to bring an end to the unseasonably hot weather in the West by the weekend and bring rain and mountain snow to much of the West by the beginning of next week. Disturbances moving around this trough will eventually bring rain and snow to the Northern Plains by Friday, with rain all along the Northern Tier over the weekend. Eventually, a surface system is forecast to develop in the Plains by the weekend and keep much of the Plains, Midwest, and Northeast unsettled into early next week.

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