Weather forecast in Ytterbyn, for a week

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.

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

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.

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.

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.