SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CDT Mon Sep 28 2020 Valid 281630Z - 291200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS OH TO THE CENTRAL GULF COAST... ...SUMMARY... Isolated strong/damaging wind gusts will be possible, mainly during the late afternoon to early evening, from Ohio to the central Gulf coast. ...OH to the central Gulf coast... Within a large-scale trough over the Great Plains/MS Valley, an initial mid-upper speed max will rotate north-northeast from IL/IN into southern Ontario. Pronounced cyclogenesis is expected through tonight from the Lake Huron vicinity north towards James Bay. The trailing cold front will continue to move east across the OH Valley to central Gulf Coast regions. Poor mid-level lapse rates are expected within the majority of the warm sector, and the richer low-level moisture (boundary-layer dewpoints in the low-mid 70s) will be confined to the Gulf Coast. Thus, buoyancy will be rather shallow and limited in magnitude to the north in the OH Valley (MLCAPE Read more
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