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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.

Monday, December 27, 2021

SPC Dec 27, 2021 1630 UTC Day 1 Convective Outlook

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1004 AM CST Mon Dec 27 2021 Valid 271630Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are possible today over parts of the mid/upper Ohio Valley region, and late tonight from the south-central Plains to the Ozarks. ...Upper Ohio Valley... A surface warm front currently extends across central OH into northern WV. This boundary will lift slowly northward today into PA, with a warmer and marginally unstable air mass spreading into those areas. Several 12z cams suggest the development of a few thunderstorms during the late afternoon/early evening across southeast OH, the northern panhandle of WV, and southwest PA. Forecast soundings show sufficient elevated CAPE and cloud-bearing shear to pose a risk of small hail and/or gusty winds in the strongest cells. At this time, the risk of severe storms appears low enough to keep probabilities less than 5%. ...OK/MO Vicinity... After midnight tonight, showers and a few elevated thunderstorms are expected to develop in a zone of intensifying low-level warm advection over eastern OK, southeast KS, southwest MO, and northwest AR. No severe storms are anticipated. ..Hart/Squitieri.. 12/27/2021 Read more LIVE: