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Weather conditions on bar directly above are near Lakefront. Tabs under Moon Phases refer to O'Hare (official).

Archives for SPC Convective outlook are updated daily with a live map a the beginning of the article. Touch or click map to get possible update, and follow link at end of article for referral to NOAA/NWS Storm Prediction Center. Archives for Chicago's hourly weather data were updated 24-48 hours after end of each day prior to Dec. 2020.

Monday, February 21, 2022

SPC Feb 21, 2022 1630 UTC Day 1 Convective Outlook

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1012 AM CST Mon Feb 21 2022 Valid 211630Z - 221200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON INTO TONIGHT FROM NORTH TEXAS ACROSS THE OZARKS.... ...SUMMARY... Severe thunderstorms will be possible mainly this evening and overnight, in a corridor from north Texas to the Ozarks and vicinity. Damaging winds, hail, and a few tornadoes are possible. ...TX into Mid MS Valley... Morning water vapor imagery shows a shortwave trough moving across southeast AZ. Lift ahead of this feature will overspread west TX by mid afternoon, where a deeply mixed boundary layer will be present. High-based fast-moving showers and thunderstorms will develop, posing a risk of damaging wind gusts. As this activity moves east-northeastward into northern/central TX, it will begin to interact with greater low-level moisture and strengthening southerly low-level winds. This should help to intensify updrafts and increase the risk of hail in the stronger cells. Multiple clusters of intense storms will then persist through the evening and overnight period, tracking across parts of southern/eastern OK, northern AR, and southern MO. A few bowing structures and supercells are expected along this corridor. Damaging winds appear to be the main risk. However, sufficient low-level shear will be present to pose a risk of a few tornadoes as well. ..Hart/Moore.. 02/21/2022 Read more CHECK UPDATE ZOOM GRAPHIC
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