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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, June 17, 2021

SPC Jun 17, 2021 Day 4-8 Severe Weather Outlook

Day 4-8 Outlook Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0348 AM CDT Thu Jun 17 2021 Valid 201200Z - 251200Z ...DISCUSSION... An upper trough is forecast to dig southeastward into the northern Rockies and Plains on Sunday/D4, with further amplification across the Great Lakes and eventually Northeast from Monday/D5 into Tuesday/D6. Significant model differences exist with the evolution of this trough and the placement of the surface low and fronts, thus predictability is too low to depict risk areas. However, severe probabilities may eventually be added in later outlooks as favorable low-level moisture will be in place generally from the mid MO and upper/mid MS Valleys eastward to the Atlantic Coast. Elsewhere, the remnants of the anticipated tropical system will likely move east/northeast across much of the southeastern states Sunday/D4 through Monday/D5, where low-level moisture will remain abundant. This system could pose a localized severe risk, assuming that wind fields remain sufficient, but predictability is low as it has yet to evolve. Read more LIVE: spc.noaa.gov
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