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MOBILE DEVICE? Turn sideways. Weather conditions directly above are near Lakefront. Top tabs refer to O'Hare (official).

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, May 24, 2023

SPC May 24, 2023 Day 4-8 Severe Weather Outlook

LIVE MAP (ABOVE) ... Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0353 AM CDT Wed May 24 2023 Valid 271200Z - 011200Z ...DISCUSSION... Medium-range guidance is in good agreement that a Rex Block will be in place over the eastern CONUS D4/Saturday morning. This blocking pattern will likely remain in place through the early next week when the upper low moves off the Southeast coast. During this same time frame, an upper low is forecast to drift slowly southeastward/eastward across the Great Basin. Low-level moisture is expected to remain in place over the Plains and the relatively stagnant upper pattern should allow for a somewhat repetitive scenario of afternoon thunderstorm development across the High Plains. This will result in a broad area of at least low severe potential across the High Plains through the weekend and into early next week. Smaller areas of greater severe potential may become apparent/more predicable as the forecast range decreases. Read more CHECK UPDATE ZOOM GRAPHIC
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CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)