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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, September 12, 2022

SPC Sep 13, 2022 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0757 PM CDT Mon Sep 12 2022 Valid 130100Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PARTS OF THE MID ATLANTIC AND ARIZONA... ...SUMMARY... Storms capable of isolated damaging wind gusts will remain possible through the evening across parts of the Mid Atlantic. Isolated severe gusts and hail are also possible across parts of Arizona. ...Arizona... Widely scattered strong/potentially severe storms are ongoing early this evening across parts of Arizona. Moderate buoyancy and modest deep-layer shear (as noted on the 00Z PHX sounding) will continue to support a threat of isolated severe wind/hail into mid/late evening, before nocturnal cooling/stabilization results in decreasing storm coverage and intensity later tonight. ...Mid Atlantic... Clusters of convection may persist into the late evening across parts of PA into the Mid Atlantic into eastern NC, though storm intensity has thus far been relatively limited, and substantial intensification does not appear likely tonight. Weak-to-moderate buoyancy and moderate effective shear will continue to support occasional storm organization through the evening, with a primary threat of isolated damaging wind gusts and perhaps some small hail. ..Dean.. 09/13/2022 Read more CHECK UPDATE ZOOM GRAPHIC
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