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506 AM EDT Mon Mar 19 2018 /406 AM CDT Mon Mar 19 2018/
...Severe Thunderstorms Expected late this Afternoon and Evening
across the Plateau, parts of the Central and Southern Tennessee
Valley, and southwest North Carolina...
...Rain Changing to Snow Showers across the Higher Elevations
Tuesday Night through Wednesday Night...
A strong storm system will move across the Southern Appalachian
Region today with southerly winds pulling warm, moist and
unstable air into the Tennessee Valley. Severe thunderstorms will
develop over middle Tennessee and northern Alabama this afternoon
and then move into the Plateau, southeast and central sections of
the Tennessee Valley, and southwest North Carolina this evening.
The main threat being tornadoes, damaging winds, and hail.
There is a potential of isolated strong tornadoes across the
southern Plateau and southeast Tennessee.
Besides the potential of severe storms, the strong low-level
winds may produce a Mountain Wave High Wind event across the
Mountains and Adjacent Foothills this afternoon and evening.
Southerly winds of 15 to 30 mph with gusts to 40 mph possible.
A cold front will move across the Tennessee Valley and southern
Appalachians Tuesday with colder air spilling into the region. For
Tuesday Night through Wednesday Night, the colder air will move
into the southern Appalachians with the rain changing to snow
showers across the higher elevations, generally above 2500 feet.
Snow accumulations are possible across the higher elevations, such
as the Smoky Mountains and High Knob, Virginia.
Anyone planning on venturing out across the higher terrain, such
as hikers, should plan for wintry conditions with temperatures
dropping into the upper teens and middle 20s, windy conditions,
and snow packed and icy trails. Best to delay venturing out
across the mountainous areas of the southern Appalachians.
Please stay tuned to NOAA Weather Radio and other local media for
further details or updates.