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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.


Wednesday, October 20, 2021

SPC Oct 21, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0804 PM CDT Wed Oct 20 2021 Valid 210100Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms will be possible this evening into tonight across parts of the Mississippi Valley, western Great Lakes, Southeast and southern High Plains, but no severe weather is expected. ...DISCUSSION... An upper-level low will move eastward into the upper Mississippi Valley tonight as an associated upper-level trough moves into the Ozarks. Ahead of the system, a narrow corridor of maximized low-level moisture will be in place from the Ozarks to the western Great Lakes. Isolated to scattered thunderstorms will be possible along the moist corridor this evening and tonight. Other storms may develop in parts of the Southeast and in the southern High Plains. Instability and deep-layer shear will be insufficient for organized thunderstorms across the contiguous United States through tonight. ..Broyles.. 10/21/2021 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)