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Travel-disrupting rain, snow to spread over much of eastern half of US early next week

AccuWeather logo AccuWeather 11/9/2018 alex.sosnowski
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A large storm is forecast to affect much of the eastern half of the nation during the first part of next week with rain and even snow for parts of the South, Midwest and Northeast.

While a storm well short of a blockbuster event is forecast, the far-reaching effects of the storm are likely to impact travel at many of the major hubs from Dallas and Atlanta to Washington, D.C., Philadelphia, Pittsburgh, New York City, Boston and Detroit.

A period of poor visibility and low cloud ceiling is likely to result in airline delays as the arrival and departure of aircraft must be spaced out much more so than during clear conditions.

Motorists can expect wet conditions with blowing spray and ponding in poor drainage areas along much of Interstate 10, 20, 77, 81, 85 and 95.

The storm will come together and gather moisture over the Gulf of Mexico on Monday and ride northeastward during Monday night and Tuesday.

a close up of a map: Static South Storm Monday © Provided by Accuweather, Inc Static South Storm Monday

The storm will be a rain event for most of the South and the Eastern Seaboard, but some snow is forecast on the northwestern flank and there is the potential for strong to locally severe thunderstorms in the warm and humid air over the Deep South.

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Due to the saturated state of the ground and fallen leaves blocking storm sewers, even a moderate amount of rain can lead to flooding in poor drainage areas and along small streams from northern Florida to eastern Massachusetts and the Maritime Provinces of Canada.

Thanks to prevailing cold air and a reinforcing boost of the same, a swath of snow is forecast to develop over part of northwestern Texas and extend northeastward across part of the middle Mississippi Valley, the Ohio Valley and lower Great Lakes region. However, that swath of snow may shift farther to the east, depending on the track of the storm.

a close up of a map: Static Storm Monday Night Tuesday © Provided by Accuweather, Inc Static Storm Monday Night Tuesday

This means that cities such as Oklahoma City, Nashville, Cincinnati and others may receive some snow.

Depending on the storm track once again, all or mostly snow may fall over northern New England and northern New York state. Even if a change to rain occurs during the height of the storm in this area on Tuesday, a few inches of snow and sleet may fall beforehand during Monday night.

There is also the likelihood for a change to snow over the spine of the Appalachians and the western slopes of the mountain chain during the last part of the storm from south to north spanning Tuesday and Tuesday night.

As a result of the wintry aspect of the storm, motorists should be prepared for a wide variety of weather conditions ranging from rain to ice and snow along portions of I-35, I-40, I-70, I-80, I-81, I-87, I-90 and I-91.

The fast-moving nature of this storm will limit any coastal flooding issues to a few hours on the front side of the storm.

However, in the storm's wake, winds will increase from the north and west, which will drive cold air from the Plains and Midwest to deep into the South and off the Eastern Seaboard.

Winds on the back side of the storm may be strong enough from Minneapolis and Chicago to Boston, New York City and Washington, D.C., to lead to airline delays once again. The gusty nature of the winds may also lead to sporadic power outages.

There is a chance of a frost of freeze near or just north of the upper Gulf coast during the middle to latter part of next week as winds ease up and the sky becomes clear.

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