15/ Since their central dates are different, I placed them inside 5-day periods in Reanalysis and created 500mb and surface temperature loops for NH. Below is the -5 to +30 day composite of 500mb anomalies that unfolded for these 3 events: pic.twitter.com/EDEDJ8zo1W

— Anthony Masiello (@antmasiello) December 29, 2020