After tornadoes ravaged Tennessee last week, prompting a visit by President Donald Trump, the area is under threat of tornadoes again today and tomorrow as two waves of strong storms will move across the southern the US into Friday; plus more of today’s weather news and forecast.

Southern US under threat of severe weather today

At least 15 states in the southern areas of the US today will be under the threat of severe weather, as a line of storms moves across southern regions bringing a warm front.

The warmer air could help increase rotation leading to isolated tornadoes. The biggest threat today is strong and damaging winds, heavy rain, hail, and the potential for tornadoes.

The following areas are facing strong thunderstorms with the potential for severe weather today: Southern California, southern Arizona, northern New Mexico, eastern Kansas, southern Missouri, eastern Oklahoma, eastern Texas, northern Louisiana, Arkansas, Western and middle Tennessee, western and southern Kentucky, central and northern Mississippi, Alabama, Georgia, and the eastern portions of the Carolinas.

Tennessee, Kentucky could see another round of tornadoes

Last week, destruction was wreaked across middle Tennessee and Kentucky by tornadoes which left a 70-mile trail of damage. Another disastrous situation is looming over middle Tennessee and southern Kentucky today as two waves of storms are expected to impact the area bringing the threat of strong wind, hail, and tornadoes.

A vigorous system is approaching Tennessee from the West bringing a warm front. As temperatures will rise into the 70s, the atmosphere will become very unstable, which helps add more spin to help storms rotate, which increases the threat of isolated tornadoes.

One forecast model puts the threat north and east of Nashville, including Gallatin, Clarksville, and Martin; and into southern Kentucky including Paducah, Hopkinsville, and Bowling Green, as well as north to Louisville.

Another forecast model puts the severe weather threat spanning from Eastern to middle Tennessee affecting the southerly areas within that region.

Threat returns tomorrow

The threat of severe weather in Tennessee and Kentucky will remain through Friday, as a second wave of severe storms moves in late after 9 PM local time in Kentucky, with storms arriving in Tennessee closer to midnight.

Among the threats are strong straight-line winds up to 60 miles per hour, small hail and heavy rain. The second line of storms has a lower potential for tornadoes.

Today’s weather alerts

Here are today’s weather conditions around the country you need to be aware of, as forecast by the National Weather Service.

West & Northern Rockies: Mixed precipitation and snow over northern Washington; snow across northern Idaho; snow in northern central southern and eastern Montana; snow in north central and eastern Wyoming; snow at the intersection of Montana/North Dakota/South Dakota.

Southwest: Heavy rain and flash lighting possible in Southern California, especially in the southern desert; heavy rain and flash flooding possible and central and southern Arizona.

Upper Midwest: Mixed precipitation and freezing rain possible in northeastern Minnesota, northern Wisconsin, and northern Michigan.

South and Ohio Valley: Severe thunderstorms in portions of southeastern Oklahoma, throughout Arkansas, southern Missouri, northern Mississippi, and Alabama, throughout Tennessee and Kentucky, southern Illinois, Indiana and Ohio, western West Virginia and Virginia, along the North Carolina-Tennessee border.

Northeast: Mixed precipitation and freezing rain possible in northeastern New York, Vermont, New Hampshire, and Western Maine.

Today’s US highs

West: San Francisco 64, Los Angeles 67, Reno 64, Las Vegas 73, Salt Lake City 56, Denver 57.

Northwest & Northern Rockies: Seattle 50, Portland 64, Boise 49, Billings 44, Bismarck 36, Rapid City 41.

Southwest: Phoenix 68, Albuquerque 66, El Paso 67, San Antonio 84, Brownsville 82.

Central & Upper Midwest: Lubbock 78, Dallas 87, Oklahoma City 81, Kansas City 69, Minneapolis 45, Madison 59.

Ohio Valley: Chicago 60, Detroit 51, St. Louis 63, Cincinnati 66, Indianapolis 61.

South: Houston 82, New Orleans 80, Memphis 72, Atlanta 74, Charlotte 77, Jacksonville 83, Tampa 85, Miami 79.

East: Norfolk 68, Washington, D.C. 62, Buffalo 53, New York 49, Boston 46, Bangor 29.