Typhoon Halong (28W) – Tropical Cyclone Advisory #8: 0000 UTC 8 October 2025

Powerful Category 4 Halong could produce heavy surf and life-threatening rip currents along the southern coast of Japan during the next few days.

Author

Will Weaver
October 07, 2025

…Powerful Category 4 Halong could produce heavy surf and life-threatening rip currents along the southern coast of Japan during the next few days…

Himawari-9 visible satellite image (Weathernerds)

Current storm information:

  • Position: 29.5°N 137.0°E

  • Movement: NW at 7 knots (10 km/h)

  • Intensity: 120 knots (220 km/h) [Category 4]

  • Central pressure: 935 hPa

Trend:

  • Fluctuations in intensity are likely during the next 24 hours.

Watches and warnings:

  • Fleet Activities Yokosuka is under TCCOR 4.

Hazards affecting land:

  • Halong is not expected to be a direct threat to land, but it could produce rough seas, heavy surf, and life-threatening rip currents along the southern and southeastern coasts of Honshu on Wednesday and Thursday.

  • Interests in the Aleutian Islands and mainland Alaska should monitor the progress of Halong.

  • U.S. military interests in Japan can get additional information via the Stars & Stripes Pacific Storm Tracker: https://www.stripes.com/theaters/asia_pacific/storm_tracker/

The next advisory will be posted after 1200 UTC 8 October 2025.

Forecast positions and maximum winds

  • 000 hrs: 29.5°N 137.0°E – 120 kts

  • 012 hrs: 31.4°N 138.1°E – 125 kts

  • 024 hrs: 33.1°N 140.4°E – 125 kts

  • 048 hrs: 34.3°N 151.9°E – 110 kts

  • 072 hrs: 35.8°N 167.0°E – 75 kts Post-tropical/extratropical

  • 096 hrs: 47.0°N 178.0°W – 75 kts Post-tropical/extratropical

  • 120 hrs: 62.0°N 172.0°W – 75 kts Post-tropical/extratropical

JMA forecast map. The extratropical phase is omitted.