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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).

Monday, October 4, 2021

SPC Oct 4, 2021 1300 UTC Day 1 Convective Outlook

SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0710 AM CDT Mon Oct 04 2021 Valid 041300Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected today through tonight. ...Central Gulf Coast to the Southern Appalachians... A shortwave impulse over eastern OK will deepen slightly as it settles into the Lower MS Valley tonight. A weak frontal zone will slowly slide southward across parts of the TN Valley to coastal LA through the period. A richly moist air mass will persist ahead of this front across the central Gulf Coast and parts of the Deep South. As pockets of modest boundary-layer heating occur, scattered thunderstorms are anticipated towards midday through the afternoon. Poor mid-level lapse rates coupled with weak low-level flow beneath modest 500-mb west-southwesterlies should curtail an organized severe threat. Some guidance suggest that a subtle increase in low-level flow may occur across the western FL Panhandle and coastal AL vicinity overnight as weak mid-level height falls overspread the region ahead of the Lower MS Valley low. Regenerative late-period convection may occur within this regime, near and just off the coast. Any damaging wind/brief tornado potential appears negligible enough to mitigate a delineation this outlook cycle. ..Grams/Mosier.. 10/04/2021 Read more LIVE: spc.noaa.gov
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