Typhoon No. 31 (In-fa) has weakened to maximum sustained winds of 65 kt (120 km/h) and is moving slowly north, according to the Japan Meteorological Agency (JMA). The storm is forecast to accelerate northeast over the Pacific, dip to a severe tropical storm on 5 November, return to typhoon grade on 6 November, and become an extratropical low by 7 November.
CURRENT STATUS
Based on the latest JMA observations on November 4, 2026 03:45 UTC
- Location: 24.5°N, 138.5°E
- Intensity: Typhoon (TY)
- Movement: North, slow
- Central pressure: 970 hPa
- Maximum sustained winds: 65 kt (120 km/h), with gusts to 95 kt (176 km/h)
- Wind radii: Winds of 50 kt or more extend 130 km (70 NM) to the east and 110 km (60 NM) to the west. Winds of 30 kt or more extend 330 km (180 NM) to the east and 280 km (150 NM) to the west.
Weathernews Global Composite Satellite Imagery valid November 3, 2026 03:30 UTC to November 4, 2026 03:30 UTC
FORECAST TRACK SUMMARY
Typhoon No. 31 (In-fa) is expected to move north, then curve northeast and accelerate sharply, reaching 80 km/h (43 kt) by 7 November.
The forecast track stays over open water and does not approach the Japanese mainland. Track confidence is high in the near term and drops later, as the probability circle widens from 45 km (25 NM) to 300 km (160 NM).
INTENSITY FORECAST
Typhoon No. 31 (In-fa) is forecast to weaken slightly to a severe tropical storm (STS) on 5 November. It is then expected to return to typhoon grade on 6 November, before transitioning to an extratropical low on 7 November.
This is a decline from the 940 hPa and 90 kt (167 km/h) analyzed on 29 October. Even as an extratropical low, the system is forecast to keep winds of 55 kt, so it may still produce rough seas.
IMPACTS & THREATS
The storm warning area, where winds of 50 kt or more are possible, is forecast to expand as the system speeds up. On 4 November the radius is 175 km (95 NM) to the east and 155 km (85 NM) to the west. By 7 November it is forecast to reach 570 km (310 NM) to the southeast and 410 km (220 NM) to the northwest. Vessels in the western and northern Pacific may encounter rough seas and strong winds. Because the storm is forecast to accelerate from 20 km/h (10 kt) to 80 km/h (43 kt) by 7 November, its position can change substantially between forecast updates, so mariners should check the latest advisories frequently.
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While official observations guide the general threat assessment, highly detailed, proprietary routing and port forecasts are essential for safe navigation. Weathernews services provide customers with 24/7 localized data to ensure your vessels remain safe and well-informed. Please consult our dedicated services for the most up-to-date, detailed predictions for your specific routes and operations.
Note on the storm's name: The name 'In-fa' was contributed by Macao, China and refers to fireworks. The WMO and the ESCAP/WMO Typhoon Committee adopt these names sequentially to make tracking specific storms straightforward and to quickly communicate warnings. To learn more about how storms are named, please visit the World Meteorological Organization (WMO) website.
