Detailed hourly weather forecast in McMurdo Station, , Antarctica

Wind felt on face; leaves rustle; ordinary vanes moved by wind.Small wavelets, still short, but more pronounced. Crests have a glassy appearance and do not break.

Leaves and small twigs in constant motion; wind extends light flag.Large wavelets. Crests begin to break. Foam of glassy appearance. Perhaps scattered white horses.

Raises dust and loose paper; small branches are moved.Small waves, becoming larger; fairly frequent white horses.

Direction of wind shown by smoke drift, but not by wind vanes.Ripples with the appearance of scales are formed, but without foam crests.

Large branches in motion; whistling heard in telegraph wires; umbrellas used with difficulty.Large waves begin to form; the white foam crests are more extensive everywhere.

Small trees in leaf begin to sway; crested wavelets form on inland waters.Moderate waves, taking a more pronounced long form; many white horses are formed.