RSS Mesoscale Discussions from Storm Prediction Center
SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1043 AM CDT Tue Mar 24 2026
Valid 241630Z - 251200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Isolated thunderstorms will be possible today across parts of
north/central Florida and late tonight over portions of coastal
Washington, but organized severe thunderstorms are not expected.
...Synopsis...
Broad high pressure will dominate the weather over the
central/eastern US today, with a cold front sagging southward across
the FL peninsula. Strong daytime heating and convergence along the
front and the east-coast sea-breeze will aid in the development of
isolated afternoon/evening thunderstorms. Cool temperatures aloft
could result in a strong storm or two capable of small hail or gusty
winds. But the overall threat of severe storms appears low.
A strong upper trough and associated mid-level speed max will begin
affecting the Pacific Northwest coast late tonight, with some risk
of lightning flashes over the Olympic peninsula.
..Hart.. 03/24/2026
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SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1152 AM CDT Tue Mar 24 2026
Valid 251200Z - 261200Z
...NO SEVERE THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Severe storms are not expected through Wednesday night.
...Synopsis and Discussion...
An upper high will remain over the southwestern states on Wednesday,
but will flatten across the Great Basin/Rockies as a strong upper
wave moves from the Pacific Northwest and into the northern Plains
by 12Z Thursday. East of there, an upper trough will continue to
exist the Northeast/Maritimes region.
At the surface, high pressure will remain over much of the East and
extending into the Gulf of America, while low pressure develops over
the northern Plains ahead of the approaching upper trough. By the
end of the period into Thursday morning, a cold front should extend
roughly from the Upper Great Lakes into the central Plains.
While gusty southerly winds will develop over the Plains, moisture
quality will be limited by the dry upstream trajectories out of the
high. Still, this may be sufficient for isolated thunderstorms over
small parts of the northern Plains and OH Valley overnight.
Otherwise, scattered thunderstorms may develop over the FL Peninsula
during the day due to strong heating and relatively cool
temperatures aloft due to the trough to the northeast. Cold
temperatures aloft over the Pacific Northwest may also support
low-topped convection near/north of the intense midlevel jet.
..Jewell.. 03/24/2026
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