YOGYAKARTA - The Meteorology, Climatology and Geophysics Agency (BMKG) is monitoring the formation of the Grant Tropical Cyclone in the southwest Indian Ocean Lampung. This phenomenon can trigger the formation of high waves in a number of Indonesian waters. So, what is the Grant Tropical Cyclone?
According to the BMKG's official website, the Tropical Cyclone Grant on December 23, 2025 was observed to be in category 1 with a maximum wind speed of 35 knots (65 km/h) and a pressure of 996 hPa with movement away from the Indonesian region so that it does not affect the weather.
Know What is the Grant Tropical CycloneTropical Cyclone Grant is a tropical storm that formed over the warm waters of the Indian Ocean. This system developed from Cyclone 93S Seed which has been growing since December 11, 2025 at 07.00 WIB in the southern Indian Ocean of East Java and reached tropical cyclone intensity on December 23, 2025 at 07.00 WIB.
On Tuesday, December 23, Tropical Cyclone Grant was observed around the southwest Indian Ocean of Bengkulu 12.2oLS, 98.2oBT (about 1030 kilometers southwest of Bengkulu).
The direction of movement of the Tropical Cyclone Grant is predicted to move west at a speed of 6 knots (11 km/jam) away from the Indonesian region.
In the next 24 hours (until December 25, 2025 at 07.00 WIB), the Tropical Cyclone Grant is predicted to move as follows:
Position: South West Indian Ocean Bengkulu 12.0oLS, 96.3oBT (about 1120 kilometers southwest of Bengkulu) Direction of Movement: West, moving at a speed of 4 knots (7 km/hour) away from the Indonesian region. Strength: 50 knots (95 kilometers/hour) Pressure: 987 hPa Category: 2 (two)Impact of Tropical Cyclone Grant in Indonesian WatersTropical Cyclone Grant is still having an indirect impact on the sea wave conditions on the southern coast of Indonesia. This tropical storm triggers the potential for an increase in wave heights in the medium category (1.25 to 2.5 meters) in a number of Indonesian waters, such as:
West Lampung waters Southern Sunda Strait South Java waters Western Indian Ocean Bengkulu to south Java.According to BMKG monitoring, Tropical Cyclone Grant is moving west-northwest away from the Indonesian archipelago.
BMKG Appeals Regarding Tropical Cyclone Grant ActivityWith the birth of Tropical Cyclone Grant, the BMKG asked people in the affected areas, especially shipping operators, to be alert to changes in sea conditions early on.
For people in coastal areas, it is hoped that they will continue to monitor BMKG information and local BPBD mitigation directions.
That's the explanation of what the Tropical Cyclone Grant is. Get updates on other featured news only at VOI.id.
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