Subj : DAY3SVR: Nws Storm Prediction Center Norman Ok
To   : wx-storm@lists.illinois.edu
From : COD Weather Processor
Date : Sun Oct 19 2025 07:24:37

ACUS03 KWNS 190724
SWODY3
SPC AC 190723

Day 3 Convective Outlook
NWS Storm Prediction Center Norman OK
0223 AM CDT Sun Oct 19 2025

Valid 211200Z - 221200Z

....NO SEVERE THUNDERSTORM AREAS FORECAST...

....SUMMARY...
Isolated thunderstorms are possible over the Great Lakes South
Florida, and Gulf Coast regions Tuesday. Severe thunderstorms are
not expected.

....Synopsis and Discussion...
The upper low over the East Coast will weaken as it phases with a
second upper trough moving across the Great Lakes and Northeast. A
cold front will stretch from the surface low over the Great Lakes to
the central Gulf Coast and move southeastward through the day. Cool
mid-level temperatures beneath the broad low will support very weak
buoyancy and some shallow storms across the Great Lakes/Upper OH
valley Tuesday afternoon.

Southwest of the primary upper low, subsidence behind a strong
northwesterly mid-level jet will strengthen post-frontal high
pressure over the central US. Offshore flow associated with the high
pressure is expected to scour surface moisture over much of the
eastern CONUS outside of south FL and the central Gulf Coast.
Isolated storms are possible along typical sea breeze boundaries,
though with only weak ascent and little to no vertical shear. Thus,
severe storms are unlikely over the CONUS Tuesday.

...Lyons.. 10/19/2025

$$

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