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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.

Tuesday, June 21, 2022

SPC Jun 21, 2022 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0339 AM CDT Tue Jun 21 2022 Valid 241200Z - 291200Z ...DISCUSSION... Guidance continues to be in good agreement regarding the persistence of the southern CONUS upper ridging through the weekend and into early next week. A strong shortwave trough is forecast to move eastward across southern Canada and adjacent portions of the northern CONUS from D4/Friday through D7/Monday. An attendant surface low will precede this shortwave, with an associated cold front sweeping southward across central CONUS on D4/Friday through D6/Sunday, and southeastward through the eastern CONUS on D5/Saturday and D6/Sunday. Thunderstorms are possible along this front as it moves southward/southeastward, but frontal timing is uncertain and buoyancy will likely be limited by strong mixing ahead of the front. These issues limit forecast confidence and overall predictability. Read more CHECK UPDATE ZOOM GRAPHIC
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