LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1144 PM CDT Tue Oct 22 2024
Valid 231200Z - 241200Z
...NO THUNDERSTORM AREAS FORECAST...
...SUMMARY...
Thunderstorm potential appears negligible today through tonight.
...Lower Great Lakes to northern New England...
A broad mid/upper-level trough will progress across parts of
southeast Canada and over the Great Lakes into the Northeast by
Thursday morning. Large-scale ascent will remain on the modest side
along an attendant surface cold front moving similarly eastward.
Moisture return ahead of it will be rather limited, and MUCAPE
should only peak around 100 J/kg. These factors suggest that while a
brief thunderstorm or two is possible, overall thunder probabilities
appear to be less than 10 percent.
...Central AR to southeast OK...
The trailing portion of the aforementioned cold front will sag south
and eventually stall, where it will intercept a plume of moderate
boundary-layer moisture characterized by mean mixing ratios around
12 g/kg. Pockets of weak low-level convergence could support shallow
convective attempts by late afternoon. While a brief thunderstorm is
plausible, the lack of forcing for ascent beyond the stalled front
and persistent warm/dry mid-levels suggest thunder probabilities are
less than 10 percent.
..Grams/Marsh.. 10/23/2024
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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
Wednesday, October 23, 2024
SPC Oct 23, 2024 0600 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)