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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, December 28, 2022

SPC Dec 28, 2022 0600 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1153 PM CST Tue Dec 27 2022 Valid 281200Z - 291200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms will be possible in the Four Corners and in the Sabine River Valley today into tonight. No severe threat is expected across the continental U.S. through tonight. ...DISCUSSION... An upper-level ridge will move eastward across the Great Lakes and Ohio Valley today as an upper-level trough moves across the western U.S. Mid-level southwest flow will enable moisture return across the Texas and Louisiana Coastal Plain. Although instability will remain weak in this area, elevated thunderstorms could develop in the Sabine River Valley as low-level flow strengthens during the evening and overnight period. Out west, a few thunderstorms could develop ahead of an upper-level trough in the Four Corners region. This will be due to strong large-scale ascent, mid-level moisture and steep lapse rates. In spite of the potential for thunderstorms in these two areas, a severe threat is not expected today or tonight. ..Broyles/Thornton.. 12/28/2022 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)