Typhoon Kalmaegi (31W) – Tropical Cyclone Advisory #12: 1500 UTC 6 November 2025

Kalmaegi rapidly moving inland over southern Vietnam and eastern Cambodia...

Author

Will Weaver
November 06, 2025

…Kalmaegi rapidly moving inland over southern Vietnam and eastern Cambodia…

Replace this image with a current satellite image of the storm (Source)

Current storm information:

  • Position: 14.0°N 108.5°E

  • Movement: WNW at 15 knots (25 km/h)

  • Intensity: 80 knots (150 km/h) [Category 1]

  • Central pressure: 970 hPa

Trend:

  • Rapid weakening is expected during the next 24 hours.

Watches and warnings:

  • There are no coastal watches or warnings in effect.

Hazards affecting land:

  • Kalmaegi is expected to produce very heavy rainfall over portions of southern Vietnam, Cambodia, southern Laos, and eastern Thailand during the next couple of days. Rainfall totals of up to 300 mm are possible across much of the southern half of Vietnam through the weekend. This rainfall will likely exacerbate an already catastrophic flooding situation in much of Vietnam, producing widespread additional flooding. For additional information, refer to products from your local weather office.

Discussion:

Kalmaegi made landfall in southern Vietnam at around 1100 UTC with winds of 110 kts. The typhoon has very quickly made its way inland and the center is now close to the Vietnam-Cambodia border. Its structure has very quickly unraveled, with the convection beginning to race ahead of the low-level circulation center. This is due to a sharp increase in shear which has caused Kalmaegi’s mid- and low-level circulations to decouple. The intensity is lowered to a potentially generous 80 kts, based on expected decay from the 110 kt landfall intensity.

Kalmaegi should continue to weaken rapidly as it moves west-northwestward over rugged terrain and into even stronger shear during the next 24 hours or so. The surface circulation will likely decay into a trough over eastern Thailand by Friday evening.

Forecast positions and maximum winds

  • 000 hrs: 14.0°N 108.5°E – 80 kts inland

  • 012 hrs: 15.0°N 105.8°E – 35 kts inland

  • 024 hrs: 15.8°N 103.8°E – 15 kts inland

  • 048 hrs: Dissipated

JMA forecast map