For Shag Rock :
Warning strong breeze.
The reliability of the situation is very good.
Very cloudy skies with short clear spells. Drizzle followed by showers in the morning, light showers dying away progressively in the afternoon. In the evening, overcast skies.
Light rain getting progressively heavier. SW force 4 in the morning freshening S force 6 in the evening. Gusts reaching 39 knots in the evening. Moderate sea becoming rough in the evening. Moderate, fairly long swell from SW then low in the evening. Visibility reduced by mist becoming excellent in the middle of the day.