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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.

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

Saturday, January 24, 2026

SPC Jan 24, 2026 2000 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 2000Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0156 PM CST Sat Jan 24 2026

Valid 242000Z - 251200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected today or tonight.

...20Z Update...
Only minor changes to the thunderstorm forecast were made based on
current observations. Cold air remains in place across the lower
Mississippi Valley this afternoon with ongoing and expected
precipitation reinforcing this airmass through Sunday morning. As
previously mentioned, a slow improvement in the environment is
possible from southeast Louisiana into southern Mississippi and
western Alabama. Given the current observations, it may take longer
to move warm/moist air inland than expected. Confidence in this
occurring before 12Z Sunday remains too low for severe
probabilities. See the previous forecast for additional information.

..Wendt.. 01/24/2026

.PREV DISCUSSION... /ISSUED 0942 AM CST Sat Jan 24 2026/

...LA/MS/AL Overnight...
The primary surface cold front has pushed off the mid/upper TX Gulf
coast, where scattered thunderstorms are ongoing. As the primary
upper trough approaches later tonight, increasing southerly
low-level winds ahead of the front will transport Gulf moisture
northward into parts of southeast LA and southern MS/AL. This will
result in some destabilization and increase in low-level/deep-layer
vertical shear. Despite a slowly improving environment for strong
convection, the main upper forcing is expected to lag to the west of
this region until after 12z. Therefore, will maintain
less-than-marginal severe probabilities for the overnight period.


Read more CHECK UPDATE ZOOM GRAPHIC


http://dlvr.it/TQXyBh

SPC Jan 24, 2026 1630 UTC Day 1 Convective Outlook

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


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0942 AM CST Sat Jan 24 2026

Valid 241630Z - 251200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected today or tonight.

...LA/MS/AL Overnight...
The primary surface cold front has pushed off the mid/upper TX Gulf
coast, where scattered thunderstorms are ongoing. As the primary
upper trough approaches later tonight, increasing southerly
low-level winds ahead of the front will transport Gulf moisture
northward into parts of southeast LA and southern MS/AL. This will
result in some destabilization and increase in low-level/deep-layer
vertical shear. Despite a slowly improving environment for strong
convection, the main upper forcing is expected to lag to the west of
this region until after 12z. Therefore, will maintain
less-than-marginal severe probabilities for the overnight period.

..Hart/Bentley.. 01/24/2026


Read more CHECK UPDATE ZOOM GRAPHIC


http://dlvr.it/TQXndK

Friday, January 23, 2026

SPC Jan 24, 2026 0100 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 0100Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0637 PM CST Fri Jan 23 2026

Valid 240100Z - 241200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Scattered weak thunderstorm activity is possible tonight primarily
across the Texas Big Bend region into central Texas.

...01z Update...

Broad warm advection regime has established itself across the
southern Plains into far west TX. Latest surface data suggests the
polar front has surged to a position from northwest of CLL-ATT-OZA.
This boundary will advance into the lower Rio Grande Valley region
later tonight. Earlier thoughts continue regarding the potential for
elevated convection atop the cooler air mass. Model guidance
continues to suggest some risk for surface-based convection near the
front later tonight. However, low-level convergence is not
particularly noteworthy and updraft strength with this activity is
expected to remain weak.

..Darrow.. 01/24/2026


Read more CHECK UPDATE ZOOM GRAPHIC


http://dlvr.it/TQXJsG

SPC Jan 23, 2026 2000 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 2000Z Day 1 Outlook


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0135 PM CST Fri Jan 23 2026

Valid 232000Z - 241200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Scattered weak thunderstorm activity is likely today into tonight
across the Texas Big Bend region into central Texas.

...20Z Update...
No changes to the ongoing forecast are needed. See the previous
discussion for additional details.

..Wendt.. 01/23/2026

.PREV DISCUSSION... /ISSUED 0958 AM CST Fri Jan 23 2026/

A large upper trough will deepen over the Rockies and High Plains
this evening, with large-scale forcing for ascent spreading across
much of TX/OK. Forecast soundings in this area show sufficiently
steep mid-level lapse rates and MUCAPE > 0 to support occasional
thunderstorms. This includes parts of western north TX and southern
OK where freezing p-types are anticipated.

Over south TX, the main cold front will be surging southward into a
moist air mass with dewpoints in the 60s. Several model solutions
suggest the development of a few thunderstorms along the front -
mainly after dark. While a brief tornado or strong wind gust cannot
be ruled out, rapid undercutting of the front is expected to limit
the overall severe threat so no probabilities have been added.


Read more CHECK UPDATE ZOOM GRAPHIC


http://dlvr.it/TQX8f0
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)