Windy.com Temps | Gusts | WU KORD KPWK

CLICK for this month's BIG night sky ...

RADAR FULL MAP SCREEN

NEXRAD

STORMTRACK

Cardinal SAT

CHGOWX.COM



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.

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

Thursday, February 27, 2025

SPC Feb 27, 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
1138 PM CST Wed Feb 26 2025

Valid 271200Z - 281200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Isolated to scattered thunderstorms are possible from the Mid and
Upper Ohio Valley to the Carolinas/southern Virginia.

...Indiana/Ohio/Kentucky/West Virginia...

Notable mid-level short-wave trough is currently digging across the
upper MS Valley, and will extend across lower MI/IN region by 18z,
before advancing into the middle Atlantic by late evening. Very cold
temperatures are noted with this feature, and profiles should
cool/steepen during the day as a secondary weak surface boundary
advances southeast across the OH Valley. Latest model guidance
suggests surface heating will aid steepening low-level lapse rates,
and 0-3km values will likely approach 8-9 C/km by mid afternoon,
despite surface temperatures only warming into the mid 40s-50s. As a
result, forecast soundings yield several hundred J/kg SBCAPE within
a strongly sheared west-northwesterly flow regime. Current thinking
is scattered low-topped thunderstorms will evolve along the boundary
by mid afternoon, then propagate southeast toward the higher terrain
of the central Appalachians. While this activity will evolve within
a weak-instability air mass, gusty winds and small hail may be noted
with the more organized updrafts. At this time it appears the
prospect for severe winds and hail are too low to warrant
probabilities.

..Darrow/Lyons.. 02/27/2025


Read more CHECK UPDATE ZOOM GRAPHIC


http://dlvr.it/TJCnFp
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)