Remnants of Wipha (09W) – Special Tropical Cyclone Advisory 15 (FINAL): 1800 UTC 22 July 2025

Wipha’s surface circulation dissipates over northern Vietnam. This is the last advisory.

Author

Will Weaver
July 22, 2025

…Wipha’s surface circulation dissipates over northern Vietnam… …This is the last advisory…

Himawari-9 infrared satellite image (Weathernerds)

Current storm information:

  • Position: 20.1°N 105.2°E

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

  • Intensity: 30 knots (55 km/h)

  • Central pressure: 992 hPa

Trend:

  • N/A. The remnants of Wipha could become incorporated into a new low pressure area over the South China Sea later this week.

Watches and warnings:

  • There are no land-based watches or warnings in effect. For local and marine watches and warnings, refer to products from your local weather office.

Hazards affecting land:

  • Heavy rainfall associated with Wipha and its remnants will spread over northern Laos and northern Thailand during the next couple of days. This rainfall will likely cause widespread flooding. For further information, refer to products from your local weather office.

Discussion:

Himawari-9 infrared satellite image (Weathernerds). While Wipha may have the outward appearance of a healthy tropical cyclone (albeit over land), this is the work of a vigorous mid-level circulation - the surface circulation, which establishes its identity as a tropical cyclone - has dissipated not far inland over Vietnam

Although Wipha continues to have a quite vigorous mid-level circulation that is about to cross out of northern Laos into northeastern Thailand, and this mid-level circulation is generating a large area of very intense convection and heavy rainfall over the region, all indications are that the surface circulation appears to have dissipated. Satellite and radar imagery indicates that what is left of the surface circulation is a broad area of slowly rotating low clouds over the northern portion of Vietnam. JMA has issued its last advisory, and this special advisory is being written to declare Wipha dissipated.

The remnants of Wipha have two distinct futures ahead of them. The global models suggest that the mid-level circulation could survive passage over land and exit off the western coast of Myanmar into the Bay of Bengal, where they could have a brief opportunity to develop into a new tropical cyclone. The remnants of the surface circulation are forecast to linger near the coast of Vietnam before becoming incorporated into a new monsoonal low that will develop to the southeast later this week.

This is the last advisory on Wipha.

Forecast positions and maximum winds

  • 00 hrs: 20.1°N 105.2°E – 30 kts Remnants

  • 12 hrs: Dissipated