Alaska's Winter Fades Under a Parade of Cloud Streets
NASA's Earth Observatory image from March 19, 2026 captures a dramatic mix of cloud formations off the Gulf of Alaska—cloud streets formed by cold Arctic air over warmer water, evolving into open-cell clouds, plus von Kármán vortex streets and a polar low with tropical-storm–force winds—illustrating the turbulent transition from winter to spring as Arctic air interacts with the Gulf's ocean heat.