ACUS02 KWNS 190528
SWODY2
SPC AC 190526

Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1226 AM CDT Thu Mar 19 2026

Valid 201200Z - 211200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
A low chance of a few thunderstorms may develop on Friday near the
Upper Ohio Valley and vicinity, and also near the southeast Florida coast.

...Synopsis...
An upper ridge will remain over the Southwest on Friday, with strong
northwest flow aloft along the Canadian border. A low-amplitude
upper wave will move from northern MN across the upper Great Lakes
late in the day and overnight, with a weak surface low moving from
the Great Lakes into the Northeast. A cold front will extend from
southwest Ontario into MO by 18Z, with southwesterly surface winds
helping to bring a plume of low to mid 50s F dewpoints as far north
as OH and western PA.

Marginal low-level moistening and daytime heating will lead to weak
instability, which may support isolated thunderstorms developing
within the warm advection zone into the Upper OH Valley and
vicinity. Severe storms are not forecast due to the weak
instability, however, veering winds with height and good deep-layer
shear will support cellular activity, perhaps with very
small/non-severe hail.

Elsewhere, the tail-end of the western Atlantic trough will maintain
cool temperatures aloft over FL. This will support afternoon
destabilization, with isolated activity near the eastern shores
where localized surface convergence may develop.

..Jewell.. 03/19/2026

$$
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