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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 14, 2022

SPC Feb 14, 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 14 2022 Valid 141630Z - 151200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from western Oregon towards northeast California and northwest Nevada through tonight. ...OR/northeast CA/northwest NV... A vigorous shortwave trough near the WA coast will dig south into northern CA by 12Z. Substantial steepening of low to mid-level lapse rates will occur as the mid-level cold pool (-30 to -35 C at 500 mb) approaches. This should support meager surface-based buoyancy amid 40s surface dew points, mainly along and west of the Cascades across western OR. A few lower-topped showers might sufficiently deepen for sporadic lightning flashes later this afternoon into this evening in the zone of ascent immediately preceding the shortwave trough. Low-end thunder potential may linger tonight as the marginally supportive environment spreads towards the OR/CA/NV border. ..Grams/Squitieri.. 02/14/2022 Read more CHECK UPDATE ZOOM GRAPHIC
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