Surge line

{
  "id": "MLC-T-MET-009459",
  "term": "Surge line",
  "field": "Meteorology and atmospheric science",
  "definition": "A boundary on a weather map or in atmospheric analysis that delineates the leading edge of a surge of cold, dense air. This line often marks a zone of convergence and uplift, which can trigger the development of thunderstorms or other convective activity. It is a feature sometimes observed in the outflow of mesoscale convective systems.",
  "url": "https://mlchart.com/terminology/meteorology/surge-line/"
}