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Archives for Chicago's hourly weather data updated 24-48 hours after end of each day. MOBILE CHGOWX.COM ...
Weather conditions on bar directly above are near Lakefront. Weather conditions with Moon are O'Hare (official).

Thursday, August 5, 2021

SPC Aug 6, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0726 PM CDT Thu Aug 05 2021 Valid 060100Z - 061200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE NORTHWEST AND UPPER MIDWEST... ...SUMMARY... A few lingering wind gusts, and perhaps a marginal hail report, remain possible this evening across parts of the Northwest and upper Midwest. ...01z Update... Scattered thunderstorms continue ahead of a frontal zone from the Arrowhead of MN into extreme southeast SD. This activity is mostly behind the short wave and is largely driven by boundary-layer heating and low-level convergence near the front. Diurnal cooling should result in weakening thunderstorms along this corridor in the next few hours. Seasonally strong short-wave trough is ejecting across northern CA toward southeast OR. High-level diffluent flow and strong boundary-layer heating remain conducive for scattered convection ahead of this feature. Gusty winds remain possible with this high-based convection for the next few hours then boundary-layer cooling should limit updraft strength. ..Darrow.. 08/06/2021 Read more LIVE: spc.noaa.gov
http://dlvr.it/S571SY