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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.


Tuesday, December 21, 2021

SPC Dec 21, 2021 1630 UTC Day 1 Convective Outlook

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1030 AM CST Tue Dec 21 2021 Valid 211630Z - 221200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE FLORIDA PENINSULA... ...SUMMARY... A couple of strong to locally severe storms could still occur through early/mid-afternoon across the eastern Florida Peninsula. ...Florida Peninsula... The overall environment/scenario is trending less favorable for severe storms, but a couple of strong/locally severe storms could still occur across the eastern Peninsula through early/mid-afternoon. Overall updraft intensity/lightning flashes have diminished over the past few hours, with an exception being some stronger storms at midday near the immediate coast of southeast Florida, which are focused along prior outflow. This activity should continue to quickly shift offshore away from the upper Keys and the remainder of South Florida. Additional development across the central/south-central Peninsula also seems unlikely or at least uncertain given the prevalence of cloud cover and a tendency for weakening convergence through the afternoon. ..Guyer/Wendt.. 12/21/2021 Read more LIVE:
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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)