Weather Models – explained.

Wednesday February 14, 2024

The Global Environmental Multiscale Model (GEM), often known as the CMC model in North America, is an integrated forecasting and data assimilation system developed in the Recherche en Prévision Numérique (RPN), Meteorological Research Branch (MRB), and the Canadian Meteorological Centre (CMC).

Forecasting a storm is a process. The powerful Nor’easter that raced south of Nova Scotia Tuesday night had been on my radar since last Wednesday. A day or so later, as the negative vorticity started to take…