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Weather conditions on bar directly above are near Lakefront. Tabs under Moon Phases refer to O'Hare (official).

Archives for SPC Convective outlook are updated daily with a live map a the beginning of the article. Touch or click map to get possible update, and follow link at end of article for referral to NOAA/NWS Storm Prediction Center. Archives for Chicago's hourly weather data were updated 24-48 hours after end of each day prior to Dec. 2020.

Sunday, July 17, 2022

SPC Jul 17, 2022 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0343 AM CDT Sun Jul 17 2022 Valid 201200Z - 251200Z ...DISCUSSION... Medium-range model guidance is in general agreement in depicting a mid-level trough over the Great Lakes on Wednesday (day 4) and into the Northeast on Thursday (day 5). Convective coverage and intensity remain unclear in the Great Lakes/OH Valley on Wednesday. Models are showing a fairly moist/unstable boundary layer over the Northeast on Thursday coincident with the mid-level trough passage. By the latter part of the extended period, the mid-level ridge will encompass a large part of the southern CONUS with low-amplitude flow to the north. Read more CHECK UPDATE ZOOM GRAPHIC
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