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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.

Saturday, September 3, 2022

SPC Sep 3, 2022 0730 UTC Day 3 Severe Thunderstorm Outlook

SPC 0730Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0125 AM CDT Sat Sep 03 2022 Valid 051200Z - 061200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk for severe thunderstorms appears negligible across the U.S., Monday through Monday night. ...Discussion... Within the westerlies, models indicate that significant lower/mid tropospheric cyclogenesis is possible, but well to the north of the international border, across the Canadian Northwest Territories during this period. Another vigorous, but more compact, perturbation may evolve over the northeastern Pacific by late Monday night. Across much of the U.S., models indicate little change to the large-scale flow from Sunday into Monday. The center of a broad mid-level high may become a bit more prominent once again across the Great Basin. Weak mid-level troughing accompanied by more substantive lower/mid tropospheric drying may shift south of the St. Lawrence Valley and lower Great Lakes region. Otherwise, seasonably moist conditions likely will persist along, south and east of a lingering weak positively tilted trough axis trailing west-southwestward across the Ohio through lower Mississippi Valleys and southeast Texas. This may again provide support for scattered to numerous mainly afternoon into early evening thunderstorms on Monday. However, the risk for severe weather is likely to remain generally negligible. ..Kerr.. 09/03/2022 Read more CHECK UPDATE ZOOM GRAPHIC
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