SPC 1930Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 1245 PM CST Mon Dec 29 2025 Valid 311200Z - 011200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible late New Year's Eve into early New Year's Day along coastal southern California. ...Southern CA... An initially retrograding upper low off of the southern CA coast is forecast to stall and then eject northeastward as a shortwave trough through the period, approaching the coast by early Thursday morning. A modest increase in moisture beneath cooling temperatures aloft could support weak thunderstorm development, mainly late in the period from the Channel Islands to the immediate southern CA coast. With only very meager forecast buoyancy, convection is expected to remain too shallow and disorganized for an appreciable severe threat, despite some increase in deep-layer flow/shear with time. ..Dean.. 12/29/2025
