SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0641 PM CST Thu Dec 17 2020 Valid 180100Z - 181200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected across the continental United States through tonight. ...DISCUSSION... An upper-level trough will move eastward across the Ohio and Tennessee Valleys this evening as an upper-level ridge moves across the Great Plains. An upper-level trough will also move eastward across the Desert Southwest. At the surface, cool and dry high pressure will dominate across much of the continental United States. For this reason, thunderstorms are not expected through tonight. ..Broyles.. 12/18/2020
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