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Archives for the SPC Convective Outlook are updated daily (approximately) with a live map at the beginning of each article. Follow the link at the end of the article to check for current updates on the NOAA/NWS Storm Prediction Center website. Also, see Archives for Chicago's hourly weather data on CARDINAL NEWS Magazine.


Friday, September 9, 2022

SPC Sep 10, 2022 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Fri Sep 09 2022 Valid 100100Z - 101200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE UPPER GREAT LAKES AND SOUTHEAST... ...SUMMARY... One or two marginally severe storms may occur across parts of the Southeast and Upper Great Lakes tonight. ...01z Update... Upper trough is advancing slowly east across the northern Plains early this evening. Latest water-vapor imagery suggests leading edge of large-scale ascent appears to be correlated with a band of weak post-frontal elevated convection from northern NE-southern MN-western UP of MI. This activity trails the surface cold front by roughly 30-50 miles, and has struggled to exhibit any appreciable intensity over the last few hours. 00z observed and forecast soundings do not lend appreciable confidence in severe hail with this convection. Even so, will maintain a small corridor of low probabilities for the possibility of marginally severe hail across portions of the upper Great Lakes. Weak baroclinic zone persists across northern FL to just south of SAV. Numerous showers/thunderstorms persist along this warm advection corridor where shear appears adequate for the continuation of weak storm organization. ..Darrow.. 09/10/2022 Read more CHECK UPDATE ZOOM GRAPHIC
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CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)