spc ac 131919
day 3 convective outlook
nws storm prediction center norman ok
0119 pm cst sat dec 13 2025
valid 151200z - 161200z
...no severe thunderstorm areas forecast...
...summary...
thunderstorms are not expected on monday.
...synopsis...
upper ridging will build over much of the central and eastern conus
as a mid-level trough de-amplifies over the pacific northwest on
monday. surface high pressure will sweep across much of the southern
and eastern conus with a statically stable airmass, while a cold
and/or dry surface airmass encompasses much of the plains into the
interior west. as a result, thunderstorm development should be
negligible over most of the conus. the one exception may be over
portions of the pacific northwest coastline. here, the de-amplifying
ridge will aid in the advection of colder temperatures atop a marine
boundary layer. given at least modest forcing for ascent and scant
buoyancy, a few lightning flashes may occur.
..squitieri.. 12/13/2025
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note: the next day 3 outlook is scheduled by 0830z