SPC 0700Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1100 PM CST Sat Dec 06 2025 Valid 081200Z - 091200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Aside from the possibility of a couple weak thunderstorms near and, perhaps, inland of southern Florida coastal areas, the risk for thunderstorms will remain negligible across much of the U.S. Monday through Monday night. ...Synopsis... The center of a fairly prominent, but relatively compact mid-level vortex is likely to continue redeveloping east-southeast of southern Hudson/James Bay, into and across the Newfoundland and Labrador vicinity during this period. However, models indicate that large-scale mid-level troughing will be maintained east of the Rockies through the western Atlantic, downstream of persistent broad ridging across the eastern mid-latitude Pacific into U.S Intermountain West. One notable short wave perturbation embedded within the troughing is forecast to accelerate east-northeast of the southern Appalachians, across and offshore of the southern Mid Atlantic, but this may contribute to suppression of subtropical ridging as far south as the Caribbean and Bahamas. In lower levels, an associated reinforcing intrusion of cooler/drier air appears likely to contribute to the southward advancement of the primary cold front through much of the remainder of the Florida Peninsula and Gulf Basin. At the same time, it appears that another notable short wave perturbation, progressing through the crest of upstream ridge, will provide support for surface cyclogenesis to the lee of the Canadian and northern U.S. Rockies by late Monday night. This likely will be accompanied by downslope aided warming across much of the high plains, but dry, stable conditions will be maintained there and across much of the remainder of the U.S. ...Southern Florida/Keys... Latest model output remains varied concerning potential for thunderstorm development along/ahead of the southward advancing front. Mid/upper support appears weak, with potential for appreciable destabilization, particularly inland of coastal areas, limited as well. ..Kerr.. 12/07/2025
