Concentric eyewalls

{
  "id": "MLC-T-MET-004570",
  "term": "Concentric eyewalls",
  "field": "Meteorology and atmospheric science",
  "definition": "Two or more distinct, nearly circular bands of intense convection and strong winds that surround the center of a powerful tropical cyclone. The inner eyewall typically weakens as the outer eyewall strengthens and contracts, a process known as an eyewall replacement cycle. This phenomenon is characteristic of very intense hurricanes and typhoons.",
  "url": "https://mlchart.com/terminology/meteorology/concentric-eyewalls/"
}