Detailed and Extended Weather Forecast in Millisle, Ards and North Down, Northern Ireland

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.

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

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.

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.

Slight structural damage occurs (chimney-pots and slates removed)High waves. Dense streaks of foam along the direction of the wind. Crests of waves begin to topple, tumble and roll over. Spray may affect visibility

Seldom experienced inland; trees uprooted; considerable structural damage occurs.Very high waves with long overhanging crests. The resulting foam, in great patches, is blown in dense white streaks along the direction of the wind. On the whole the surface of the sea takes on a white appearance. The tumbling of the sea becomes heavy and shock-like. Visibility affected.