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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).

Friday, October 8, 2021

SPC Oct 8, 2021 0600 UTC Day 1 Convective Outlook

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1254 AM CDT Fri Oct 08 2021 Valid 081200Z - 091200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OVER A PORTION OF THE GREAT BASIN AS WELL AS SOUTHEAST GEORGIA INTO NORTHERN FLORIDA... ...SUMMARY... A few storms capable of strong wind gusts and marginally severe hail are possible from southeast Georgia into northeast Florida as well as across a portion of the Great Basin today. ...Southeast Georgia through northeast Florida... Only modest enhancement of mid-upper flow will occur across the southeast states as an upper trough continues east through the OH and TN Valleys. A cluster of storms associated with a weak impulse moving through the base of this trough will likely be ongoing across central through south-central GA. This activity may pose a marginal risk for a few strong wind gusts and marginally severe hail as it continues southeast and offshore during the afternoon. Depending on the evolution of the morning activity, additional storms may develop farther west along a weak front with approach of the next upstream impulse. This activity will be multicellular in character and could pose some risk for locally strong wind gusts and small hail. ...Great Basin area... Vertical shear will undergo a substantial increase across the Great Basin in association with an upper jet moving through the base of a progressive upper trough. Areas of showers and thunderstorms will be ongoing along a cold front from NV into ID as well as farther east into UT within corridor of ascent attendant to the upper jet. If enough cloud breaks can occur in a portion of the pre-frontal zone, instability with up to 500 J/kg MLCAPE might become sufficient for a few organized storms given degree of vertical shear. Locally strong wind gusts and small to marginally severe hail will be the primary threats during the afternoon. ..Dial/Elliott.. 10/08/2021 Read more LIVE: spc.noaa.gov
http://dlvr.it/S98Kj2