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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.

Sunday, May 15, 2022

SPC May 15, 2022 0730 UTC Day 3 Severe Thunderstorm Outlook

SPC 0730Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0230 AM CDT Sun May 15 2022 Valid 171200Z - 181200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF SOUTHERN NEBRASKA AND NORTHERN KANSAS...AND INTO SOUTHWESTERN IOWA/NORTHWESTERN MISSOURI... ...SUMMARY... Locally severe storms are expected across potions of the central Plains/Missouri Valley Tuesday afternoon and evening. ...Central Plains/Mid Missouri Valley vicinity... West-northwesterly flow aloft is progged across much of the U.S. Tuesday, south of a trio of upper lows over Canada. This westerly flow will advect an elevated mixed layer across the central Plains, with a cap effectively suppressing most convective potential south of central Kansas. However, with afternoon heating/mixing, isolated storm development will be possible over portions of northern Kansas and into Nebraska, in the vicinity of a weak warm front. Other storms are expected to develop within low-level northeasterly upslope flow into the central High Plains. With moderate westerly flow aloft, expect storms to organize locally. While weak low-level flow should limit tornado potential, hail, along with potential for a few stronger wind gusts will exist. After dark, as a low-level jet re-intensifies, storms should increase in coverage, spreading east-southeastward into parts of Iowa and Missouri. Risk for hail and locally strong gusts may continue into the overnight hours. ..Goss.. 05/15/2022 Read more CHECK UPDATE ZOOM GRAPHIC