Low-level jet

{
  "id": "MLC-T-MET-001589",
  "term": "Low-level jet",
  "field": "Meteorology and atmospheric science",
  "definitions": [
    "A narrow current of fast-moving air found in the lower troposphere, typically within the lowest one to two kilometers above the ground. This low-level jet (LLJ) is characterized by a sharp vertical wind shear and a distinct maximum in wind speed below the main polar jet stream. The Great Plains LLJ is a well-known example that transports moisture from the Gulf of Mexico northward, fueling severe thunderstorms.",
    "(abbrev. LLJ)- A region of relatively strong winds in the lower part of the atmosphere. Specifically, it often refers to a southerly wind maximum in the boundary layer, common over the Plains states at night during the warm season (spring and summer).\n\nThe term also may be used to describe a narrow zone of strong winds above the boundary layer, but in this sense the more proper term would be low-level jet stream."
  ],
  "abbreviation": "LLJ",
  "synonyms": [
    "low-level jet stream"
  ],
  "references": [
    "NWS Glossary"
  ],
  "url": "https://mlchart.com/terminology/meteorology/low-level-jet/"
}