Other Local Winds - Santa Ana Winds

  • Hot, dry winds that often sweep through the L.A. Basin in the fall and winter.

  • Need a strong high over the southwestern U.S. -->>

  • winds descend from the higher desert terrain down in to the L.A. Basin - parcels become warmer and drier due to compressional heating

  • wind speeds are enhanced as the flow channels through the mountain passes

  • a satellite view of a Santa Ana event:

  • Fires during October, 2007: