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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).

Sunday, September 5, 2021

SPC Sep 5, 2021 0600 UTC Day 1 Convective Outlook

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1223 AM CDT Sun Sep 05 2021 Valid 051200Z - 061200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Organized severe thunderstorms are not currently forecast today or tonight across the Lower 48 states. ...Synopsis... A broad mid-level trough with cyclonic flow will encompass the Midwest into the Northeast today. A lead mid-level speed max will move from the central Great Lakes into NY by late afternoon. Only weak destabilization is forecast across NY ahead of the approaching disturbance. Nonetheless, a moist boundary layer (60s F dewpoints) and strengthening large-scale ascent will lead to isolated storms developing during peak heating. Farther west, isolated storms are expected to be ongoing across the central Great Plains in association with a mid-level shortwave trough forecast to be absorbed within the larger-scale trough. Although a strong storm cannot be ruled out early this morning over NE, it appears any hail risk will be limited and short-lived. Elsewhere, general thunderstorms are forecast for the lower MS Valley westward into the Desert Southwest. ..Smith/Squitieri.. 09/05/2021 Read more LIVE: spc.noaa.gov
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