Post-Tropical Cyclone Co-May (11W/Ex-Emong) – Tropical Cyclone Advisory #8 (FINAL): 0000 UTC 26 July 2025

Co-May becomes a remnant low. This is the last advisory.

Author

Will Weaver
July 25, 2025

…Co-May becomes a remnant low… …This is the last advisory…

Himawari-9 visible satellite image (Weathernerds)

Current storm information:

  • Position: 25.3°N 125.7°E

  • Movement: NNE at 25 knots (45 km/h)

  • Intensity: 25 knots (45 km/h)

  • Central pressure: 998 hPa

Trend:

  • The remnant low is forecast to dissipate later today.

Watches and warnings:

  • There are no land-based watches or warnings in effect.

Hazards affecting land:

  • None.

Discussion:

Himawari-9 visible satellite image (Weathernerds)

Co-May has not produced any significant convection for about 24 hours, and it lies as a diffuse swirl of low clouds just northeast of Miyakojima. In addition, the only convection associated with Co-May at all - the cluster of convection near Taiwan - has dissipated along with Co-May’s former mid-level circulation. Strong northeasterly shear will likely prevent convection from returning, so Co-May has become a remnant low. The intensity is lowered to 25 kts, and despite passing directly over Miyakojima, there were no winds stronger than 20 kts reported there. Co-May should continue moving quickly northeastward today before dissipating within the monsoon trough.

GCOM-W1 AMSR2 89GHz microwave image. Co-May is a swirl of low clouds with no convection.

This is the last advisory on Co-May. 

Forecast positions and maximum winds

  • 00 hrs: 25.3°N 125.7°E – 25 kts Post-tropical/remnant low

  • 12 hrs: Dissipated

JMA forecast map