spc ac 231658
day 2 convective outlook
nws storm prediction center norman ok
1058 am cst mon feb 23 2026
valid 241200z - 251200z
...no thunderstorm areas forecast...
...summary...
thunderstorms are not expected across the us on tuesday.
...synopsis and discussion...
moderate northwesterly flow aloft is forecast to extend across the
majority of the conus early tuesday. several shortwave troughs are
expected to move within the this northwesterly flow, including one
forecast to move across the upper midwest, upper great lakes, and
adjacent northwestern ontario.
a deepening lee trough, and likely lee low development, will help
tighten the surface pressure gradient across the plains. resulting
southerly flow across the southern plains will encourage some modest
low-level moisture return is anticipated late tuesday through
wednesday morning across the tx gulf coast. however, the previously
mentioned shortwave is expected to remain displaced well north of
this low-level moisture and any associated buoyancy, precluding
thunderstorm developing across the conus.
a shortwave trough will also move into the pacific northwest early
wednesday morning. cool and moist profiles are expected to be in
place tuesday morning, with some mid-level drying anticipated across
the region throughout the day ahead of this wave. some additional
cooling/moistening is possible along the wa coast early morning as
the wave moves through. however, stable conditions will prevail
throughout the period, with no lightning anticipated.
..mosier.. 02/23/2026
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note: the next day 2 outlook is scheduled by 0700z