LIVE MAP (ABOVE) ... SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0738 AM CDT Fri Apr 11 2025
Valid 111300Z - 121200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS THIS
AFTERNOON/EVENING FROM NORTH FLORIDA TO EASTERN NORTH CAROLINA AND
EXTREME SOUTHEAST VIRGINIA...
...SUMMARY...
Isolated strong to locally severe thunderstorms are possible from
the eastern Carolinas into southeast Virginia and across far
southeast Georgia and northern Florida.
...North FL to eastern NC this afternoon/evening...
A midlevel trough is in the process of amplifying over the southern
Appalachians as one embedded speed max rotates northeastward over
the Carolinas today, and an upstream speed max digs southeastward
from the mid MS Valley to the Southeast. An associated surface
cyclone will develop northeastward across the eastern Carolinas
today, while a trailing cold front moves southeastward into north
FL. Boundary-layer dewpoints in the low-mid 50s, in combination
with surface heating beneath cold (less than -20 C at 500 mb)
midlevel temperatures, will result in MLCAPE near 500 J/kg with
minimal convective inhibition. Scattered thunderstorms are expected
to form this afternoon near the cyclone track across the eastern
Carolinas and along the front in north FL. The weak buoyancy and
relatively straight hodographs suggest some storm organization will
be possible with a low-end threat for hail and strong outflow winds
for a few hours this afternoon/evening.
A few low-topped thunderstorms are also expected this afternoon over
the southern Appalachians. However, buoyancy and vertical shear
will be weaker compared to areas farther east and southeast, and
only sub-severe hail/wind is expected.
..Thompson/Dean.. 04/11/2025
Read more CHECK UPDATE ZOOM GRAPHIC
http://dlvr.it/TK5jHT
Windy.com Temps | Gusts | WU KORD KPWK |
CLICK for this month's BIG night sky ... | RADAR FULL MAP SCREEN |
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MOBILE DEVICE? Turn sideways. Weather conditions directly above are near Lakefront. Top tabs refer to O'Hare (official).
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.
CONVECTIVE | TORNADO | WIND | HAIL
O'Hare International Airport KORD
(Arlington Heights South)
Chicago Executive Airport KPWK
(Arlington Heights North)
Friday, April 11, 2025
SPC Apr 11, 2025 1300 UTC Day 1 Convective Outlook
SUNRISE AND SUNSET TIMES IN UTC (if you're not logged in to Google)
CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)
CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)