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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.

Thursday, September 2, 2021

SPC Sep 3, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0800 PM CDT Thu Sep 02 2021 Valid 030100Z - 031200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR SMALL PARTS OF NORTHEAST KS AND CENTRAL NE... ...SUMMARY... Isolated severe thunderstorms remain possible this evening, with a threat of locally damaging wind and a brief tornado. ...Central Plains... Occasional rotating storms have been noted across portions of Nebraska and Kansas early this evening, though convection has struggled to maintain severe intensity. Veering wind profiles noted on the 00Z OAX/TOP soundings and recent KUEX VWP will continue to support some rotation with the strongest storms into mid evening, though very warm temperatures aloft and weak midlevel lapse rates will continue to dampen storm intensity. Locally damaging wind and a brief tornado or two remain possible in the short term before the threat begins to substantially wane later tonight. See MCD 1686 and 1687 for more information on the threat in this area. ...Northern UT...Southeast ID...WY... Clusters of thunderstorms will continue this evening from near Salt Lake City northeastward into parts of WY. MUCAPE 500-1000 J/kg and effective shear of 25-30 kt (as noted on the 00Z SLC sounding) will continue to favor some storm organization, with locally damaging wind gusts and perhaps some hail possible into mid/late evening. ..Dean.. 09/03/2021 Read more LIVE: spc.noaa.gov