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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

Thursday, December 7, 2023

SPC Dec 7, 2023 0600 UTC Day 1 Convective Outlook

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


Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
1128 PM CST Wed Dec 06 2023

Valid 071200Z - 081200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected.

...Pacific Northwest...

Midlevel speed max, currently off the Pacific Coast, is forecast to
translate inland across northern CA early in the period before
advancing into the central High Plains by 08/00z. A secondary speed
max will then dig southeast and increase as it approaches the Great
Basin during the latter half of the period. Strong 12hr height falls
will spread across much of the interior West along with
significantly cooler midlevel temperatures/steep lapse rates. While
weak buoyancy may permit shallow convection across this region, it
appears the greatest risk for lightning will occur with convection
near the coast where marine influences will contribute to a bit more
buoyancy. Isolated thunderstorms may be noted early, in association
with the aforementioned lead speed max, and with the secondary
short-wave trough Thursday evening.

..Darrow.. 12/07/2023


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