La Niña is now the weakest it has been in over two years, using the SOI (Southern Oscillation Index) index for monthly values since 1950. The SOI is one measurement tool for calculating the strength of La Niña atmospherically, in this case using sea level pressure values. How does this change the winter outlook, or does it? I discuss that in this video and will present a research image below. Here's the latest monthly SOI data including November to show you the strength relative to all other p