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Portugal’s Institute for the Sea and Atmosphere issued maritime navigation bulletins dated 10 October, based on the 0000 UTC situation. A bulletin for 22°W–7°W and 35°N–45°N opened with no warnings. A separate high-seas bulletin for 40°W–22°W and 30°N–45°N flagged strong-wind, poor-visibility and rough-sea warnings for zones 3 (Altair) and 30 (Milne).
For Altair, the forecast called for south to southwest winds of force 5–7, at times 8, and waves generally 3–4 metres, temporarily 4–5 metres in the northernmost area. Milne was forecast to have similar winds and waves of 3–5 metres before easing to 2–3 metres as the wind turned westerly. Visibility could become poor or very poor. The bulletin is valid until 06:00 UTC on 11 October; it reports no closure or observed disruption.