When Wind Map is on, the site requests wind on a regular lat/lon lattice covering (a capped region of) the visible map, using the map model on the toolbar (HRDPS ~1 km West, HRDPS 2.5 km, or HRRR 3km (USA)) within each model’s domain. The time slider under the bar (shared with other overlays) chooses the forecast hour. The Altitude slider selects an isobaric level or, in gust mode, 10 m gust and direction—depending on model support.