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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, October 24, 2021

SPC Oct 24, 2021 0600 UTC Day 2 Convective Outlook

SPC 0600Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1251 AM CDT Sun Oct 24 2021 Valid 251200Z - 261200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE SOUTHERN AND CENTRAL APPALACHIANS... ...SUMMARY... Thunderstorms associated with wind damage are expected across parts of the southern and central Appalachians on Monday. Marginally severe wind gusts will also be possible in parts of the Mid-Atlantic and eastern Carolinas Monday evening and into the overnight period. ...Southern and Central Appalachians... An upper-level trough will move eastward across the Ohio and Tennessee Valley on Monday as an associated 50 to 60 knot mid-level jet noses into the southern Appalachian Mountains. At the surface, a cold front will advance eastward across the Ohio and Tennessee Valleys. Ahead of the front, a moist airmass will be in place from the southeastern U.S. northeastward into parts of the Mid-Atlantic. Thunderstorms are expected to develop along and ahead of the front around midday with a line of storms moving eastward across the southern and central Appalachians during the afternoon. Although the models only develop weak instability ahead of the front, the mid-level jet will create strong deep-layer shear across much of the southern and central Appalachians. For this reason, a wind-damage threat is expected along the leading edge of the line segment during the afternoon. The wind-damage threat should persist into early evening as the line moves across the Appalachian crest and into the eastern foothills. In addition to a wind-damage threat, a brief tornado or two will also be possible, especially if a supercell can become organized within a gap in the line or at the tail end of the line. ..Broyles.. 10/24/2021 Read more LIVE: spc.noaa.gov
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