Für Lake Arenal : No gale warning.
The reliability of the situation is very good.
Very cloudy with risk of thunderstorms in the morning, storms developing in the afternoon. Fairly heavy showers for a time.
In the evening, overcast skies with risk of thundery outbreaks. Possibility of showers ENE force 2 in the morning becoming E force 1 in the evening. Gusts reaching 11 knots in the morning. Visibility reduced by mist becoming poor in the middle of the day then reduced by fog.