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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.


Monday, February 20, 2023

SPC Feb 20, 2023 0700 UTC Day 2 Convective Outlook

LIVE MAP (ABOVE) ... SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1243 AM CST Mon Feb 20 2023 Valid 211200Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Organized severe thunderstorms are not forecast on Tuesday across the contiguous United States. ...Synopsis... A mid-level low near Baja California will evolve into an open trough while moving east across northern Mexico and reaching southwest TX and adjacent portions of Mexico. A powerful upstream speed max will dig south-southeastward along the Pacific Coast. A cyclone will deepen over the Great Basin during the period. A surface warm front will advance north across the Mid South and the Ozark Plateau. Southerly low-level flow will advect moisture north across the southern Great Plains. A strengthening warm conveyor belt (50-65 kt 850mb flow) is forecast from TX into the lower MO Valley/OH Valley mainly after dark, and will favor the development of scattered showers/thunderstorms. The greatest coverage of thunderstorms will probably focus across parts of west into northwest TX and southern OK, and in a separate area from the lower MO Valley east into the OH Valley. MUCAPE ranging from 250-750 J/kg in the presence of strong vertical shear may result in a stronger elevated storm or two near the Red River. ..Smith.. 02/20/2023 Read more CHECK UPDATE ZOOM GRAPHIC
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)