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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.

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Wednesday, November 27, 2024

SPC Nov 27, 2024 1630 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1630Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1024 AM CST Wed Nov 27 2024

Valid 271630Z - 281200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER PORTIONS OF
MISSISSIPPI...ALABAMA...WESTERN GEORGIA...AND THE FLORIDA
PANHANDLE...

...SUMMARY...
Isolated strong to severe storms are possible late tonight into
early Thanksgiving morning over eastern Mississippi, central and
northern Alabama, and the western/central Florida Panhandle.

...Southeast States...
A progressive and strong shortwave trough is moving across the
central Rockies this morning, and will spread into the Plains
tonight. Ahead of this system, low-level cyclogenesis will result
in strengthening southwesterly low-level winds across the
southeastern states. Gulf moisture will stream northward, with 60s
dewpoints expected tonight across most areas from TN southward. A
cold front will impinge on the low-level moisture after dark,
leading to at least a conditional risk of a few intense
thunderstorms.

A strong low-level inversion is present across the southeast this
morning, and will persist into the evening. However, increasing
large scale ascent will slowly erode the cap, improving the
potential for a few thunderstorms along the approaching cold front.
This is most likely to occur after midnight, and mainly from eastern
MS eastward across parts of AL into GA. Low-level wind fields are
strong, suggesting some concern for gusty/damaging winds or perhaps
a tornado overnight.

Farther south, morning model guidance continues to suggest the
development of scattered thunderstorms along a pre-frontal
convergence zone over southern AL and the FL Panhandle - mainly
after 09z. Shear profiles are strong enough in this region for
rotating storms, although the area is south of the low-level jet
axis and displaced from the more favorable large scale forcing.

..Hart/Thornton.. 11/27/2024


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