Typhoon Halong (28W) – Tropical Cyclone Advisory #10: 0000 UTC 9 October 2025

Halong moving away from Japan. Conditions should begin to improve in the Izu Islands during the next few hours.

Author

Will Weaver
October 08, 2025

…Halong moving away from Japan… …Conditions should begin to improve in the Izu Islands during the next few hours…

Himawari-9 visible satellite image (Weathernerds)

Current storm information:

  • Position: 33.0°N 141.1°E

  • Movement: ENE at 16 knots (25 km/h)

  • Intensity: 105 knots (195 km/h) [Category 3]

  • Central pressure: 946 hPa

Trend:

  • Gradual weakening is forecast during the next 24 hours, and Halong will likely become a powerful hurricane-force post-tropical cyclone on Friday.

Watches and warnings:

  • There are no coastal watches or warnings in effect.

Hazards affecting land:

  • Interests in the Aleutian Islands and mainland Alaska should monitor the progress of Halong. Halong’s post-tropical remnants could produce storm- to hurricane-force winds and heavy rain or snow over portions of western Alaska early next week. For additional information, refer to products from the U.S. National Weather Service.

WSFM MWI 89GHz microwave satellite image

The next advisory will be posted after 1200 UTC 9 October 2025.

Forecast positions and maximum winds

  • 000 hrs: 33.0°N 141.1°E – 105 kts

  • 012 hrs: 33.9°N 146.0°E – 95 kts

  • 024 hrs: 34.1°N 153.1°E – 80 kts Post-tropical/extratropical

  • 048 hrs: 36.5°N 169.1°E – 60 kts Post-tropical/extratropical

  • 072 hrs: 49.0°N 176.0°W – 60 kts Post-tropical/extratropical

  • 096 hrs: 63.0°N 174.0°W – 65 kts Post-tropical/extratropical

  • 120 hrs: 66.0°N 170.0°W – 55 kts Post-tropical/extratropical inland

JMA forecast map, extratropical phase omitted (probably good considering the 120 hour position is over the Russian Far East)