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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, February 20, 2022

SPC Feb 20, 2022 1630 UTC Day 1 Convective Outlook

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1005 AM CST Sun Feb 20 2022 Valid 201630Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... A few lighting flashes will be possible with showers across parts of the Northwest today. Isolated thunderstorms may occur tonight across portions of the lower Mississippi Valley/ArkLaTex region. ...Pacific Northwest... Water vapor imagery shows an upper trough digging toward the WA/OR coast. Cold temperatures aloft and strong onshore flow will pose a risk of isolated lightning flashes throughout the forecast period in this area. More diurnally-driven thunderstorms are possible farther east over portions of eastern WA/OR and northern ID as the steeper lapse rates overspread the region. ...Lower MS Valley... Southerly low-level winds are forecast to strengthen tonight over the Arklatex region, helping to transport Gulf moisture northward and slowly destabilize the region. Enhanced warm-advection and lift may lead to a few elevated thunderstorms after 06z. No severe storms are forecast. ..Hart/Thompson.. 02/20/2022 Read more CHECK UPDATE ZOOM GRAPHIC