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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.

ARLINGTON HEIGHTS WEATHER

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
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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)