Subseasonal Weather Outlook and Review

Drier conditions are predicted over much of central and southern Mainland Southeast Asia and northern parts of the Maritime Continent in the next fortnight (1 – 14 April).

Wetter conditions are predicted over much of the southern half of the Maritime continent in the next fortnight (1 – 14 April).

Warmer than usual temperature is predicted over most of Southeast Asia in the next fortnight (1 – 14 April).

A Madden-Julian Oscillation (MJO) signal was observed over the Western Hemisphere (Phase 1) towards the end of March based on the RMM index. Most models predict the signal to decay over the Western Hemisphere, becoming indiscernible by the start of Week 1. Some models predict the signal to emerge over the Indian Ocean (Phase 3) during Week 1 and propagate eastwards through the Maritime Continent (Phases 4 and 5) during Week 2.

The outlook is assessed for the region in general, where conditions are relative to the average conditions for the corresponding time of year. For specific updates on the national scale, the relevant ASEAN National Meteorological and Hydrological Services should be consulted.

Drier conditions are predicted over much of central and southern Mainland Southeast Asia and northern parts of the Maritime Continent in the next fortnight (1 – 14 April).

Wetter conditions are predicted over much of the southern half of the Maritime continent in the next fortnight (1 – 14 April).

Warmer than usual temperature is predicted over most of Southeast Asia in the next fortnight (1 – 14 April).

A Madden-Julian Oscillation (MJO) signal was observed over the Western Hemisphere (Phase 1) towards the end of March based on the RMM index. Most models predict the signal to decay over the Western Hemisphere, becoming indiscernible by the start of Week 1. Some models predict the signal to emerge over the Indian Ocean (Phase 3) during Week 1 and propagate eastwards through the Maritime Continent (Phases 4 and 5) during Week 2.

The outlook is assessed for the region in general, where conditions are relative to the average conditions for the corresponding time of year. For specific updates on the national scale, the relevant ASEAN National Meteorological and Hydrological Services should be consulted.