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Weather conditions on bar directly above are near Lakefront. Tabs under Moon Phases refer to O'Hare (official).

Archives for SPC Convective outlook are updated daily with a live map a the beginning of the article. Touch or click map to get possible update, and follow link at end of article for referral to NOAA/NWS Storm Prediction Center. Archives for Chicago's hourly weather data were updated 24-48 hours after end of each day prior to Dec. 2020.

Monday, December 6, 2021

SPC Dec 6, 2021 0830 UTC Day 3 Severe Thunderstorm Outlook

SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0215 AM CST Mon Dec 06 2021 Valid 081200Z - 091200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms appear unlikely across the contiguous United States on Wednesday. ...Synopsis and Discussion... Isolated weak/elevated thunderstorms may be ongoing at the start of the period Wednesday morning across parts of the Southeast in a modest low-level warm advection regime. As a large-scale upper trough moves quickly eastward across much of the eastern CONUS, this convection is forecast to likewise develop eastward towards the Atlantic Coast. Elevated instability ahead of this activity should remain quite meager due to a prior frontal intrusion into the northern Gulf of Mexico. There also appears to be some chance that modest low-level moisture may be able to advance inland across parts of north FL and southern GA by Wednesday afternoon. Regardless, mid-level lapse rates are forecast to be particularly poor, which should limit the degree of MLCAPE that can develop. While a few surface-based storms could form across this area during the day, the weak forecast instability suggests that the overall severe potential should remain low. ..Gleason.. 12/06/2021 Read more LIVE: spc.noaa.gov
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