Tropical Storm Tapah (22W/Lannie) – Tropical Cyclone Advisory #3: 1500 UTC 6 September 2025

Depression strengthens into Tropical Storm Tapah. Could become a typhoon before making landfall in southern China.

Author

Will Weaver
September 06, 2025

…Depression strengthens into Tropical Storm Tapah… …Could become a typhoon before making landfall in southern China…

Himawari-9 infrared satellite image (Weathernerds)

Current storm information:

  • Position: 18.6°N 115.2°E

  • Movement: WNW at 10 knots (20 km/h)

  • Intensity: 35 knots (65 km/h)

  • Central pressure: 998 hPa

Trend:

  • Some strengthening is forecast during the next 24 hours.

Watches and warnings:

  • No. 1 Standby Signal (HKO/SMG): Hong Kong and Macau

Hazards affecting land:

  • Interests in southern China, including Hong Kong and Macau, should monitor the progress of the depression. It could produce periods of heavy rainfall in the region beginning early on Monday and continuing through midweek.

The next full advisory will be posted after 0000 UTC 7 September 2025.

Forecast positions and maximum winds

  • 00 hrs: 18.6°N 115.2°E – 35 kts

  • 12 hrs: 19.1°N 114.3°E – 45 kts

  • 24 hrs: 20.2°N 113.4°E – 55 kts

  • 36 hrs: 21.3°N 112.2°E – 65 kts

  • 48 hrs: 22.3°N 110.8°E – 40 kts inland

  • 72 hrs: Dissipated

JTWC forecast map