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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)

Wednesday, October 29, 2025

SPC Oct 29, 2025 0600 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1238 AM CDT Wed Oct 29 2025

Valid 291200Z - 301200Z

...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
EASTERN NORTH CAROLINA AND SOUTHEAST VIRGINIA...

...SUMMARY...
Storms with marginally severe wind gusts will be possible late
Wednesday night into early Thursday morning across parts of eastern
North Carolina and southeast Virginia.

...Eastern North Carolina/Southeast Virginia...
A mid-level low will move into the Tennessee Valley today, as a jet
streak in the base of the system translates through the Gulf Coast
states. Diffluent mid-level flow associated with the exit region of
the jet will overspread the southern Atlantic Coastal states
Wednesday evening. The core of the jet will move eastward across the
Carolinas Wednesday night. In response, a low will develop over
southern North Carolina after midnight, moving northeastward into
eastern North Carolina by early Thursday morning. Low-level
convergence near the surface low and large-scale ascent along the
eastern edge of the mid-level jet streak will provide support for
isolated thunderstorm development. In addition to the strong flow
aloft, a jet max near 850 mb will translate eastward across eastern
North Carolina and eastern Virginia late in the period.
Thunderstorms that develop in proximity to the low-level jet could
mix the stronger winds to the surface, resulting in an isolated
wind-damage threat.

..Broyles/Wendt.. 10/29/2025


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