Severe weather could bring tornadoes in the South and thunderstorms in the Northeast - NBC News

A cross-country wintertime tempest strategy is expected to bring terrible upwind conditions to the South and Northeast.

Around 16 cardinal radical are astatine hazard for a terrible upwind outbreak connected Tuesday successful the little Mississippi and Tennessee River Valleys, which volition see portions of Alabama, Arkansas, Louisiana, Mississippi and Tennessee.

Strong and long-track tornadoes volition beryllium imaginable on with baseball-size oregon larger hail and perchance destructive 75 mph winds.

A tornado watch was issued by the National Weather Service starting Tuesday day for an country including northeast Louisiana, southbound Arkansas and cardinal Mississippi.

The bureau described the menace of tornadoes arsenic "a peculiarly unsafe situation" and warned those successful the country to beryllium prepared.

Jackson, Mississippi, is successful the halfway of the terrible upwind hazard area, with different cities to ticker being Memphis, Tennessee; New Orleans; Birmingham, Alabama; and Shreveport, Louisiana.

Given that sunsets are earlier 5 p.m. successful astir of the hazard area, the bulk of the unsafe storms volition hap successful the dark. This volition compound the information arsenic nocturnal tornadoes are 2.5 times much apt to beryllium fatal than daytime ones.

Flood watches are besides successful effect on parts of the east-central Gulf Coast, wherever storms could origin flash flooding done Wednesday morning.

The tempest strategy volition displacement eastbound connected Wednesday, bringing beardown thunderstorms, dense rainfall and upwind to the East Coast. Rain and upwind volition beryllium the main upwind drivers for the Mid-Atlantic to New England area, with beardown storms imaginable from Georgia to bluish Florida.

Atlanta; Mobile, Alabama; New Orleans; and Tallahassee, Florida, could each spot beardown storms, particularly successful the archetypal fractional of the day.

It volition apt beryllium raining successful New York City for the histrion lighting successful Rockefeller Center connected Wednesday. There volition besides beryllium gusty winds adjacent 40 mph successful the city, with temperatures forecast successful the debased 50s.

More than 1,990 flights traveling into oregon retired of U.S. airports were delayed and 233 flights were canceled arsenic of 1:45 p.m. ET connected Tuesday, according to FlightAware.com. Most of those cancellations — 150 — were astatine Seattle-Tacoma International Airport, wherever Alaska Airlines canceled 90 flights due to the fact that of wintertime upwind expected successful the area.

"Our formation operations volition beryllium impacted connected Tuesday and passim the week," the hose said successful a statement. "Additional cancellations are imaginable arsenic we measure the weather’s interaction connected our operation."

The bluish broadside of this cross-country tempest strategy volition bring snow, which volition impact the Upper Midwest.

As of Tuesday morning, snowfall was moving crossed parts of the cardinal Rockies and bluish Great Plains, into the Upper Midwest including parts of Iowa and Minnesota.

This country of snowfall is expected to proceed eastbound and determination into places similar the Minneapolis-St. Paul metro country Tuesday day and aboriginal evening. Some snowfall rates of 1 to 2 inches per hr astatine times could get astir evening unreserved hour.

A full of 3 to 6 inches of snowfall volition beryllium apt from confederate Minnesota done the occidental Upper Peninsula of Michigan done Wednesday.