1/ The Feb-May North American Cold Area on the updated 1991-2020 climo is interesting. Much of the NH has warmed (as expected), except for the area between 58-118°W over the interior part of North America (42-62°N). Below is the ERA5 '81-10, '91-20 2m T difference for FMAM (K): pic.twitter.com/5Oc1rfQjCq

— Anthony Masiello (@antmasiello) May 7, 2021