Subseasonal Weather Outlook and Review

Wetter conditions are predicted over much of the Maritime Continent in Week 1 (20 – 26 January).

Drier conditions are predicted over parts of southern and eastern Mainland Southeast Asia in Week 1 (20 – 26 January).

No significant regional temperature anomalies are predicted in the next fortnight (20 January – 2 February).

A Madden-Julian Oscillation (MJO) signal was present over the Western Hemisphere and Africa (Phases 8 and 1) in the second week of January based on the RMM index. Models predict this MJO signal to continue propagating eastwards over the Indian Ocean (Phase 3) during Week 1. In Week 2, most models predict the signal to weaken as it moves through the Maritime Continent (Phases 4 and 5).

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.

Wetter conditions are predicted over much of the Maritime Continent in Week 1 (20 – 26 January).

Drier conditions are predicted over parts of southern and eastern Mainland Southeast Asia in Week 1 (20 – 26 January).

No significant regional temperature anomalies are predicted in the next fortnight (20 January – 2 February).

A Madden-Julian Oscillation (MJO) signal was present over the Western Hemisphere and Africa (Phases 8 and 1) in the second week of January based on the RMM index. Models predict this MJO signal to continue propagating eastwards over the Indian Ocean (Phase 3) during Week 1. In Week 2, most models predict the signal to weaken as it moves through the Maritime Continent (Phases 4 and 5).

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.