Now that ERA5 Reanalysis goes back to 1940, I annotated maps showing the coldest and warmest winters (Dec-Feb) since 1940-41. These are 0.25° approximations. Not perfect, but pretty good. Please do not reply telling me your location is different than what the maps show. pic.twitter.com/OLhZHmuCJg

— Brian Brettschneider (@Climatologist49) March 8, 2023