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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.


Saturday, November 20, 2021

SPC Nov 20, 2021 0830 UTC Day 3 Severe Thunderstorm Outlook

SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 1259 AM CST Sat Nov 20 2021 Valid 221200Z - 231200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected on Monday. ...Synopsis... An amplified western CONUS ridge/eastern CONUS trough upper pattern is forecast to be in place early Monday morning before progressing eastward throughout the day. Some amplification of the upper trough is anticipated as it moves eastward towards the Eastern Seaboard while the upper ridging deamplifies slightly as it moves into Plains. At the surface, a cold front will likely stretch from eastern NY southwestward through the Mid-Atlantic and off the central Gulf Coast early Monday morning. Stable conditions will persist in the wake of this front across much of the central and eastern CONUS. The only exception is across southern FL, where a few afternoon thunderstorms are possible ahead of the front. ..Mosier.. 11/20/2021 Read more LIVE:
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)