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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.

Thursday, September 1, 2022

SPC Sep 1, 2022 0730 UTC Day 3 Severe Thunderstorm Outlook

SPC 0730Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0104 AM CDT Thu Sep 01 2022 Valid 031200Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Organized severe thunderstorms are not expected on Saturday. ...Synopsis... A weak mean mid/upper level trough will persist from the Midwest toward the Northeast on Saturday. Stronger westerly deep-layer flow will remain over Ontario and Quebec, with vertical shear becoming quite weak over the central/eastern CONUS. A strong upper anticyclone will remain over the Great Basin/southwestern states, while a compact shortwave trough migrates across the Pacific Northwest and northern Rockies. At the surface, a moist airmass will be in place across the southern Plains into the MS/OH Valley and Southeast. A cold front will extend from northern Lower MI into northwest OK Saturday morning and sag slowly east/southeast through the period. Pockets of moderate to strong destabilization are possible across the warm sector. However, weak large-scale ascent and poor vertical shear will limit organized severe-thunderstorm potential. Sporadic strong gusts aided by water-loaded downdrafts could occur across parts of the southern Plains to the OH/TN Valley vicinities, but overall severe-thunderstorm potential appears low. ..Leitman.. 09/01/2022 Read more CHECK UPDATE ZOOM GRAPHIC
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