Each locale has a unique landscape that creates or modifies the wind. These local winds affect where we choose to live, how we build our buildings, what we can grow, and how we are able to travel. During synoptic high pressure (i.e., fair weather), some winds are generated locally by temperature differences. These gentle circulations include thermals, anabatic/katabatic winds, and sea breezes. During synoptically windy conditions, mountains can modify the winds. Examples are gap winds, boras, hydraulic jumps, foehns/chinooks, and mountain waves.