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Archives for the SPC Convective Outlook are updated daily (approximately) with a live map at the beginning of each article. Follow the link at the end of the article to check for current updates on the NOAA/NWS Storm Prediction Center website. Also, see Archives for Chicago's hourly weather data on CARDINAL NEWS Magazine.

ARLINGTON HEIGHTS WEATHER
O'Hare International Airport KORD (Arlington Heights South)
Chicago Executive Airport KPWK (Arlington Heights North)

Tuesday, November 25, 2025

SPC Nov 25, 2025 1300 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1300Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0621 AM CST Tue Nov 25 2025

Valid 251300Z - 261200Z

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING FROM EAST-CENTRAL MISSISSIPPI INTO CENTRAL ALABAMA....

...SUMMARY...
Isolated severe storms are possible across parts of the
Southeast/Deep South this morning into the early evening hours. A
couple tornadoes are possible in parts of eastern Mississippi and
central Alabama.

...MS/AL/GA...
A progressive mid-level shortwave trough is moving across west
TN/northern MS. Strong forcing for ascent ahead of this trough has
resulted in a fast-moving line of showers and isolated thunderstorms
across northern AL this morning - now moving into northwest GA.
These storms are tracking into a progressively less unstable air
mass, with surface dewpoints only in the mid 50s. This should limit
downdraft penetration to the surface and diminish the risk of
gusty/damaging winds in the next couple of hours.

In the wake of this activity, southerly low-level winds will allow
gradual return of the moist and moderately unstable air mass into
east-central MS and central/northern AL. Large-scale forcing will
be weak the rest of the day, but pockets of daytime heating may be
sufficient for the re-development of scattered thunderstorms by
early afternoon. Those storms that form will be in an environment
of 20-30 knots of southerly low-level winds and sufficient
deep-layer shear to promote transient supercell structures.
Therefore have maintained the ongoing SLGT risk, despite weak
forcing mechanisms. Gusty winds and a risk of a few tornadoes are
the main concern.

..Hart/Dean.. 11/25/2025


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