Abstract Wildfires occur each summer in the boreal forests of Alaska, with an increasing frequency of extreme fire seasons in recent decades. The wildfire season typically begins after the snow melts (i.e., snowoff) in April–May, which is trending toward earlier dates since 1959 (ranging from 2 to 4 days decade−1 over Alaska). This study evaluates snowoff dates in Alaska and related synoptic-scale atmospheric drivers in spring over 1959–2020 to assess possible linkages with the summer w...| AMETSOC