RSS Mesoscale Discussions from Storm Prediction Center
SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1052 PM CST Sun Jan 11 2026
Valid 121200Z - 131200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorms are not expected today and tonight.
...Synopsis...
Surface high pressure will be in place from the Intermountain West
to the Southeast today. The expansive high pressure extending from
the southern Plains to the Southeast will maintain continental
trajectories and offshore flow, cutting off Gulf moisture. The lack
of boundary layer moisture, and cool/stable conditions will preclude
thunderstorm activity through Monday night/early Tuesday.
..Leitman.. 01/12/2026
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SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1257 AM CST Mon Jan 12 2026
Valid 131200Z - 141200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe thunderstorms are not forecast across the U.S. on Tuesday or
Tuesday night.
...DISCUSSION...
Cyclonic northwesterly mid-level flow will be in place across much
of the central and eastern U.S. on Tuesday, as an embedded shortwave
trough digs southeastward into the Upper Midwest. A relatively cool
and dry airmass will be in place over most of the nation. The only
exception will be in south Florida, where surface dewpoints are
forecast to be in the lower to mid 60s F. As temperatures warm
during the day, isolated non-severe thunderstorms will be possible
over the Florida Keys and in the vicinity of Miami. Elsewhere across
the continental U.S., thunderstorms are not expected to develop
Tuesday and Tuesday night.
..Broyles.. 01/12/2026
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SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0225 AM CST Mon Jan 12 2026
Valid 141200Z - 151200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
No thunderstorms are forecast across the U.S. on Wednesday and
Wednesday night.
...DISCUSSION...
A large-scale upper-level trough will dig southeastward into the
east-central U.S. on Wednesday, as a cold front moves southeastward
into the Appalachians. A large area of high pressure will settle
into the Great Plains and Mississippi Valley, reinforcing a cool and
dry airmass across the region. For this reason, thunderstorms are
not expected on Wednesday and Wednesday night across the continental
U.S.
..Broyles.. 01/12/2026
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