SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1236 AM CDT Mon Sep 19 2022 Valid 201200Z - 211200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE WESTERN GREAT LAKES REGION... ...SUMMARY... Thunderstorms associated with hail and strong wind gusts may occur on Tuesday across parts of the western Great Lakes. ...Western Great Lakes... Zonal flow will be in place on Tuesday across much of the north-central U.S. A 65 to 80 knot mid-level jet associated with a shortwave trough will move into western Ontario as a belt of stronger low-level flow remains over parts of the Upper Midwest. To the south of this mid-level jet, a cold front will advance southeastward across the northern Plains and upper Mississippi Valley. Ahead of the front, a moist airmass will be in place from southern Wisconsin east-southeastward into southwestern lower Michigan, where surface dewpoints are forecast from 65 to 70 F. As surface temperatures warm during the day, moderate instability is expected to develop along this corridor. A capping inversion across much of the region will prevent convective initiation in most areas. Storms that can initiate in spite of the cap will be elevated. For this reason, any severe threat that develops should remain isolated and marginal. Hail and a few strong wind gusts could occur with the stronger cells. ..Broyles.. 09/19/2022
