Severe Storm Outlook Narrative (AC)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 
000
ACUS02 KWNS 180456
SWODY2
SPC AC 180454

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1154 PM CDT Wed Apr 17 2024

Valid 191200Z - 201200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE SOUTHEAST...

...SUMMARY...
Sporadic strong to marginally severe storms are possible on Friday
over parts of the Southeast.

...Synopsis and Discussion...
An upper low will deepen as it moves across Ontario, with strong
flow across the Great Lakes with a 90+ kt, elongated midlevel speed
max. Well to the south, 30-40 kt midlevel winds will exist across
northern portions of MS/AL/GA/Carolinas. This flow will be
juxtaposed with a destabilizing air mass ahead of a cold front, with
MLCAPE over 1000 J/kg developing where heating is strongest.

Storms are likely to develop over the Appalachians, extending
southwestward along the front into northern GA, AL, and into central
MS. A subsidence inversion below 700 mb will be a concern for the
lower elevations, but at least isolated marginally severe storms
will be possible coincident with peak heating and with sufficient
frontal convergence.

Forecast soundings show steep low-level lapse rates but relatively
weak low-level winds. However, modest west/northwest flow aloft and
sufficiently long hodographs may favor a few cells capable of
marginal hail and locally damaging gusts.

..Jewell.. 04/18/2024

$$
USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.