[REVISION HISTORY]
Indonesia BMKG wave warnings
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2026-08-02 10:46 UTC → 2026-08-29 10:17 UTC ·
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In mid‑July 2026 2026, Indonesia’s Meteorology, Climatology, and Geophysics Agency (BMKG) issued a wave warning for the Maluku archipelago and the southern Lombok Strait as Tropical Cyclone Haishen moved north of Papua. The agency forecast moderate waves of 1.25‑2.5 m across 21 sea areas and warned that small fishing boats, tongkangs, ferries and larger ships faced heightened risk at specific wave‑height thresholds. A month later, in risk. In early August 2026, BMKG released additional extended warnings for to the coasts of Bengkulu and South Kalimantan. Expected wave heights of 1.25‑2.5 m In Bengkulu, alerts covered the northern and southern coastal zones and Enggano Island, while in South Kalimantan, risks were linked to wind speeds of up to 25 knots, prompting local noted around Tanah Laut and Kotabaru. Local disaster agencies to advise fishermen and urged maritime operators to monitor updates and suspend sea postpone activities if conditions deteriorated. The became unsafe. By late August, BMKG issued new warnings effective from August alerts similarly highlighted risks to small and larger vessels, extending 29 through September 1, 2026. In the pattern Maluku region, waves of seasonal wave advisories 1.25 to 2.5 meters were expected across Indonesia’s 20 areas, including the waters around Buru, Seram, Ambon, the Kai and Aru Islands, the Banda Sea, and the Arafura Sea, driven by east to southeast winds. In Bengkulu, conditions were forecast to be more severe, with waves potentially reaching 2.5 to 4 meters in the Enggano Island waters and the western Indian Ocean. Authorities reiterated that small fishing boats face significant risks when wind speeds reach 15 knots and southern maritime zones. waves hit 1.25 meters.
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