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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.

Monday, August 8, 2022

SPC Aug 8, 2022 0730 UTC Day 3 Severe Thunderstorm Outlook

SPC 0730Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0210 AM CDT Mon Aug 08 2022 Valid 101200Z - 111200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Organized severe weather appears unlikely across the CONUS on Wednesday. ...Discussion... The pattern on Wednesday will feature an upper high over the central Rockies, an upper low off the coastal Pacific Northwest, and upper troughing from the Great Lakes into the Northeast. At the surface, a quasi-stationary front will extend roughly from the Mid Atlantic into the southern Plains, with 60s F dewpoints and a few 70s F common along the boundary. While winds aloft will increase across the Great Lakes as the main jet max moves from Ontario into Quebec, any substantial shear is forecast to remain well north of the surface front. As such, scattered storms from northern TX to the Mid Atlantic are expected to be largely non-severe, though a few strong gusts may occur during the peak heating hours. To the west, 40 kt southerlies at 500 mb will remain over OR and WA, with a weak surface trough east of the Cascades. MLCAPE is forecast to be below 500 J/kg, with straight-line hodographs. This may support a few cells during the afternoon and evening, but forecast soundings show relatively poor midlevel lapse rates despite the upper low to the west. As such, severe weather is currently not forecast. ..Jewell.. 08/08/2022 Read more CHECK UPDATE ZOOM GRAPHIC
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