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MOBILE DEVICE? Turn sideways. Weather conditions directly above are near Lakefront. Top tabs refer to O'Hare (official).

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.


Sunday, October 3, 2021

SPC Oct 4, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0733 PM CDT Sun Oct 03 2021 Valid 040100Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Organized severe thunderstorms are not expected tonight. ...01z Update... Slow-moving organized line of convection has developed from northwestern OH/eastern IN ahead of a progressive short-wave trough. This activity is expected to propagate downstream this evening, but gradually weaken as boundary-layer cooling results in weaker buoyancy across this region. 00z sounding from ILN exhibits very poor lapse rates and negligible instability with surface temperatures in the mid 60s. Elsewhere, greater instability currently exists across portions of the TN Valley into the central Gulf States but onset of diurnal cooling and the absence of meaningful large-scale ascent do not favor robust convection tonight. ..Darrow.. 10/04/2021 Read more LIVE:
SUNRISE AND SUNSET TIMES IN UTC (if you're not logged in to Google)
CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)