Until the outcome of the 2025 federal election, the Australian Government is operating under caretaker conventions

Black and White Mean Sea Level Pressure Chart

Latest Black and White Mean Sea Level Pressure Chart

Features:
  • Line with short dashes
    Low pressure
    trough
  • Line with triangles on one side
    Cold front
  • Line with triangles separated by small circles
    Developing
    cold front
  • Line with triangles separated by crosses
    Decaying
    cold front
  • Line with short and long dashes
    Monsoon trough
  • Line with semicircles
    Warm front
  • Line with semicircles separated by small circles
    Developing
    warm front
  • Line with semicircles separated by crosses
    Decaying
    warm front
  • Arrow indicates front direction, label indicates speed in knots
    Front direction
    and speed (knots)
  • Line with semicircles on one side and triangles on the other side
    Stationary front
  • Line with triangles and semicircles on the same side
    Occluded front