100 Million Americans Under Severe Weather Threat, Tornadoes This Week

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A large and dangerous severe weather and tornado threat is expected on Wednesday and throughout the week in the South putting at least 100 million Americans, while parts of the West are under blizzard warnings.

A dangerous tornado outbreak expected on Wednesday

As the cold air of winter meets the warming air of spring, it sets conditions for potentially violent weather. Such conditions are coming together in a big way this week.

On Wednesday, a vast area in the southern corridor of the United States is under the threat of severe weather, putting at least 100 million Americans at risk. Residents in at least 14 states are under a severe weather threat with likely tornado outbreaks on Wednesday including those living in Kansas, Oklahoma, Texas, Missouri, Illinois, Indiana, Kentucky, Tennessee, Arkansas, Louisiana, Mississippi, Alabama, Florida and Georgia.

The threat moves east on Thursday to include South Carolina, North Carolina, Virginia, West Virginia and Ohio.

Areas under the highest threat for Wednesday

On Wednesday, a large swath of the South will be under the imminent threat of tornado outbreaks on Wednesday. The severe weather threats also include large hail, damaging winds and flash flooding.

Here are the areas with the highest risk:

Threat level 5-high: northeastern Louisiana; southeastern Arkansas; central Mississippi; west-central Alabama.

Threat level 4-moderate: The eastern halves of Arkansas and Louisiana; Mississippi; northern, central and western Alabama; southwestern Tennessee.

Threat level 3-enhanced: southern Missouri; Arkansas; Louisiana; western Tennessee; Alabama; the western edge of Georgia.

Blizzards, strong winter storms possible on Wednesday

The National Weather Service (NWS) has issued a blizzard warning and winter storm warning in the West as strong winter storm over parts of the West could bring blizzard conditions to southeastern Colorado, southwestern Kansas, northeastern New Mexico, the Oklahoma Panhandle and the high plains of the Texas Panhandle. High wind warnings and advisories have been issued for most of Texas, eastern New Mexico, western Oklahoma, as well as central and southern Kansas.

National Weather Service alerts for Wednesday

The National Weather Service (NWS) has issued the following alerts for Wednesday:

Flash flood watch: southwestern Kansas, central and southern Missouri, southern Illinois, extreme western Kentucky and along the Mississippi River; southeastern Mississippi; southwestern Alabama.

Tornado watch: eastern and southeastern Arkansas; western Tennessee; northern Mississippi.

Severe thunderstorm warning: northwestern Mississippi.

Severe thunderstorm watch: eastern Texas; eastern Oklahoma; southwestern Missouri; southwestern Arkansas; northwestern Louisiana.

Today’s US weather forecast: Wednesday, March 17, 2021

West: San Francisco 54, mostly cloudy; Los Angeles 67, partly cloudy; Reno 58, mostly cloudy; Las Vegas 67, mostly sunny; Salt Lake City 59, cloudy; Denver 40, partly cloudy.

Northwest & Northern Rockies: Seattle 58, partly cloudy; Medford 61, partly cloudy; Boise 59, mostly sunny; Cut Bank 55, mostly sunny; Billings 54, sunny; Minot 48, partly cloudy; Rapid City 41, snow.

Southwest: Phoenix 73, mostly sunny; Albuquerque 61, partly cloudy; El Paso 69, sunny; San Antonio 80, windy; Brownsville 89, thunderstorms.

Central & Upper Midwest: Lubbock 56, windy; Dallas 71, windy; Oklahoma City 59, rain; Kansas City 47, rain; Minneapolis 44, partly cloudy.

Ohio Valley: Chicago 42, rain; St. Louis 59, rain; Detroit 56, partly cloudy; Cincinnati 68, rain.

South: Houston 76, thunderstorms; New Orleans 81, thunderstorm; Memphis 73, thunderstorms; Atlanta 60, rain; Charlotte 65, cloudy; Jacksonville 88, partly cloudy; Tampa 86, sunny; Miami 81, mostly sunny.

East: Norfolk 54, cloudy; Washington, D.C. 58, mostly cloudy; Buffalo 52, partly cloudy; New York City 51, cloudy; Boston 51, partly cloudy; Caribou 42, partly cloudy.