Tropical Depression Senyar (34W) – Tropical Cyclone Advisory #5: 1500 UTC 29 November 2025

…Senyar becoming poorly organized and may be dissipating…

Current storm information:

• Position: 5.5°N 107.8°E

• Movement: ENE at 8 knots (15 km/h)

• Intensity: 30 knots (55 km/h)

• Central pressure: 1006 hPa

Trend:

• Weakening is forecast during the next 24 hours, and Senyar could dissipate on Sunday.

Discussion:

Senyar has become very poorly organized, consisting of a small area of convection being sheared off to the west of an increasingly ill-defined circulation center. This appears to be due to interaction with Tropical Storm Koto’s outflow channel. Scatterometer data indicates that the circulation has spun down quite a bit since the previous advisory and it may no longer be closed. The intensity remains a potentially generous 30 kts, based on Dvorak fixes of T1.5 to T2.0 and CIMSS ADT and D-PRINT estimates ranging from 25 to 34 kts.

Senyar is no longer forecast to become a tropical storm. The environment is expected to become even less favorable as it moves northeastward, and most of the model guidance decays Senyar’s circulation into a trough within the next 24 hours, though it could dissipate before then. Whatever is left of Senyar will likely become absorbed by Koto by Monday.

Forecast positions and maximum winds

• 000 hrs: 5.5°N 107.8°E – 30 kts 55 km/h

• 012 hrs: 6.5°N 108.8°E – 25 kts 45 km/h

• 024 hrs: Dissipated