Subseasonal Weather Outlook and Review

Wetter conditions are predicted over western Mainland Southeast Asia and the northwestern Maritime Continent in Week 1 (14 – 20 April). Wetter conditions are also predicted over the southeastern Maritime Continent in the next fortnight (14 – 27 April).

Drier conditions are predicted over eastern Mainland Southeast Asia and parts of the northeastern Maritime Continent in Week 1 (14 – 20 April).

Cooler than usual temperature for this time of year is predicted for parts of western and central Mainland Southeast Asia in Week 1 (14 – 20 April). Warmer than usual temperature is predicted over parts of the northeastern Maritime Continent in the next fortnight (14 – 27 April).

No Madden-Julian Oscillation (MJO) signal was present during the first week of April. Some models predict an MJO signal to emerge over the Western Pacific (Phase 6 or 7) in Week 1, before propagating to the Western Hemisphere and Africa (Phases 8 and 1) in Week 2, while the rest of the models predict no significant MJO activity.

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 western Mainland Southeast Asia and the northwestern Maritime Continent in Week 1 (14 – 20 April). Wetter conditions are also predicted over the southeastern Maritime Continent in the next fortnight (14 – 27 April).

Drier conditions are predicted over eastern Mainland Southeast Asia and parts of the northeastern Maritime Continent in Week 1 (14 – 20 April).

Cooler than usual temperature for this time of year is predicted for parts of western and central Mainland Southeast Asia in Week 1 (14 – 20 April). Warmer than usual temperature is predicted over parts of the northeastern Maritime Continent in the next fortnight (14 – 27 April).

No Madden-Julian Oscillation (MJO) signal was present during the first week of April. Some models predict an MJO signal to emerge over the Western Pacific (Phase 6 or 7) in Week 1, before propagating to the Western Hemisphere and Africa (Phases 8 and 1) in Week 2, while the rest of the models predict no significant MJO activity.

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.