Severe Storm Outlook Narrative (AC)
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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

$$
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