Severe storms bringing flooding, rain and heavy snow along eastern US

The eastern United States is being hit with severe weather this weekend, bringing flooding to the Southeast, rain to the mid-Atlantic and snow to the Northeast.

This weekend, 25 million Americans from Atlanta to Washington, D.C., are under a flood watch as heavy rain, gusty winds and frequent lightning threaten the southwestern U.S. Meanwhile, Alabama, Georgia and the Florida panhandle are at risk of isolated tornados.

A Tornado Watch is in effect for the panhandle of Florida, including Tallahassee and Panama City, until 6 p.m. CT. Storms moving through will be capable of producing damaging winds gusts and a possible tornado.

Another area of concern is northern Alabama. Storms there may create similar risks with damaging wind and a possible tornado late Saturday afternoon into the evening. However, a watch is unlikely to be issued here according to the Storm Prediction Center.

After picking up around two months' worth of rain in the last few days, parts of eastern Texas and Louisiana are still dealing with major river flooding.

The Trinity River just northeast of Houston is currently in a Major Flood Stage -- meaning significant to catastrophic, life-threatening flooding -- and is forecast to stay above flood levels through at least Wednesday.

This overall storm system will take a turn up the east coast, bringing rain and snow to a wide area. Rain and snow begins in the Northeast early on Sunday, continuing in varying intensity from the daytime into Sunday night.

Along the coast into the Northeast, precipitation will mainly fall as rain this weekend, but it will be difficult to accumulate at the ground level as far north as New York City.

Farther west and north of NYC there will be a great chance for snow accumulation from Sunday morning to midday Monday.

Winter Alerts are already starting to pop up in the Northeast with scattered winter alerts from northern Pennsylvania to southern New Hampshire.

A stretch from Eria, Pennsylvania, to Boston can expect between 3-6" of snowfall accumulation Sunday and Monday, impacting the Sunday evening commute and the Monday morning commute.

Some areas of New England, especially at higher elevations, may receive up to 10" of snowfall accumulation. This includes Hunter, New York, and Pittsfield, Massachusetts.

The mid-Atlantic, including Philadelphia and Washington, D.C., are expected to get 1 to 3 inches of rain as record high temperatures hit the area.

Washington D.C. reached 80 degrees on Friday for the first time in its 152-year history of weather records. Previously, the record for the earliest 80-degree day was Feb. 21, 2018.

The West is currently dealing with an Atmospheric River. A few inches of rain are possible along the coasts of Washington and Oregon this weekend.

As soils are already mostly saturated, this period of heavy rainfall could result in flooding along area waterways, along with ponding of low lying areas and poorly drained urban areas. As well as flooding concerns, this rainfall could also lead to increased occurrences of rockfalls and landslides.

Meanwhile, it is very warm along the West Coast. Record high temperatures are possible Sunday and Monday from San Francisco to Seattle, and includes Medford, Oregon, Boise, Idaho and Portland, Oregon.