Locally heavy snow is expected as Winter Storm Orson undergoes bombogenesis into Monday.Strong, gusty winds will create blowing and drifting snow, and blizzard conditions are likely.
Winter Storm Orson is bringing heavy snow and strong winds to New England, just days after being impacted by .
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Here are four things to know about Winter Storm Orson.
Winter Storm Orson has developed into a very powerful area of low pressure off the coast of New England.
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As that low hurls moisture westward into Maine on Monday, snowfall rates of 1 to 3 inches per hour are possible at times. This will enhance snowfall totals in this area.
Another important aspect of this storm are the strong and gusty winds that have developed.
Wind gusts at times may top 60 mph, especially along the New England coast. Even inland, gusts between 35 and 45 mph are anticipated.
Winds of this strength may lead to downed trees andpowerlines, especially in areas where snow is weighing them down.
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This could also create blizzard conditions, and a blizzard warning has been issued for much of eastern Maine, including Bangor.
A blizzard is defined as sustained winds or frequent wind gusts of 35 mph or greater and considerable falling or blowing snow, which frequently reduces visibility to less than a quarter of a mile for at least 3 hours.
High winds from Orson will also extend southward to New York City, Philadelphia and Washington D.C., where gusts to 60 mph on Monday could down tree limbs, cause power outages and result in flight delays.
Winter Storm Orson was undergoingbombogenesisas of Monday morning.
In order to meet the criteria of "bombing out," the central pressure of a low-pressure system must drop at least 24 millibars within 24 hours.This typically happens when there is a large temperature gradient, usually between a cold continental air mass and warm sea-surface temperatures.
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Storms that reach this threshold are accompanied by very heavy precipitation and strong winds, like we are seeing with Orson.
Winter Storm Nikounderwent bombogenesis, and it is unusual to see a second system within four days also expected to reach bombogenesis criteria in the same area.
Some of the areas that were hardest hit in Maine by Winter Storm Niko are seeing heavy snow and strong winds once again from Orson. For the rest of the Northeast, however, this storm will be different than Niko.
Moderate to heavy snow stretched from Pennsylvania and upstate New York across New England with Niko. The footprint of moderate to heavy snow with Orson will be smaller, including upstate New York and central and northern New England.
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MORE ON WEATHER.COM: Winter Storm Niko (PHOTOS)