####018001603####
ACUS01 KWNS 120036

SWODY1

SPC AC 120034



Day 1 Convective Outlook  

NWS Storm Prediction Center Norman OK

0734 PM CDT Thu Apr 11 2024



Valid 120100Z - 121200Z



...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE UPPER

OHIO VALLEY AND CENTRAL APPALACHIANS...



...SUMMARY...

Severe thunderstorms with a few tornadoes, scattered damaging winds,

and isolated severe hail are possible across the upper Ohio River

Valley and parts of the Appalachians tonight.



...01z Update...



Low-amplitude southern-stream short-wave trough is advancing across

the southern Appalachians this evening. This feature is ejecting

northeast in response to upstream height falls ahead of digging

Midwest trough. Leading edge of large-scale ascent appears to be

aiding an arcing band of convection across NC into western VA.

Additionally, a well-defined MCV is evident over central WV, and the

southern influence of this feature may be contributing to upscale

growth along the northern fringe of the aforementioned arcing band.

LLJ is expected to intensify across the middle Atlantic this

evening/overnight ahead of the approaching short wave, which will

encourage convection to spread/develop downstream across western

VA/MD into western PA. Strong deep-layer shear favors organized

updrafts along with rotation. However, convective mode is complex

and larger clusters/MCSs may be the dominant storm mode much of the

night. Even so, some risk for tornadoes continues, along with the

potential for damaging winds.



..Darrow.. 04/12/2024



$$