SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0106 PM CST Sun Dec 01 2024 Valid 031200Z - 041200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible along the Texas Coast. No severe thunderstorms are expected. ...Synopsis... Upper troughing is forecast to cover the eastern CONUS early Tuesday morning, with an embedded shortwave trough progressing through the Mid-Atlantic States. Mean upper troughing is expected to continue gradually eastward throughout the day, while another shortwave trough drops southeastward through the Canadian Prairies and into the northern Plains/Upper Midwest late Tuesday/early Wednesday. At the surface, ridging associated with a dry, continental airmass is forecast to gradually shift eastward from the Mid MS Valley into the central Appalachians. Presence of this ridging and associated dry airmass will help to maintain stable conditions across the majority of the eastern CONUS. The only exception is along the TX coast. Here, easterly low-level trajectories around the surface ridging will moisten the low-levels while larger scale mass response ahead of the shortwave trough entering the northern Plains increases the low to mid-level southerly flow. Resulting warm-air advection could be enough for isolated thunderstorms along the TX coast, beginning across south TX early Tuesday before gradually shifting northward throughout the period. ..Mosier.. 12/01/2024