Subseasonal Weather Outlook and Review

Subseasonal Weather Outlook (15 – 28 November 2021)

Issued 12 November 2021
First forecast week: 15 November – 21 November
Second forecast week: 22 November – 28 November

Figure 1: Rainfall Outlook

Figure 2: Temperature Outlook

 

Wetter conditions are expected over much of western and southern Mainland Southeast Asia in Week 1 (15 – 21 November). These wetter conditions are likely to persist over western Mainland Southeast Asia, but likely to ease over southern Mainland Southeast Asia, in Week 2 (22 – 28 November).

For the Maritime Continent, wetter conditions are expected over the southern parts in the next fortnight (15 – 28 November). Elsewhere, drier conditions are expected over the western and central equatorial region in Week 1 (15 – 21 November).

Warmer than usual temperature is expected over the western and central equatorial region in Week 1 (15 – 21 November), in line with the drier conditions predicted.

No clear MJO signal was present at the start of November. Most models predict the MJO to remain indiscernible based on the RMM Index during the forecast period.

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.

Subseasonal Weather Outlook (15 – 28 November 2021)

Issued 12 November 2021
First forecast week: 15 November – 21 November
Second forecast week: 22 November – 28 November

Figure 1: Rainfall Outlook

Figure 2: Temperature Outlook

 

Wetter conditions are expected over much of western and southern Mainland Southeast Asia in Week 1 (15 – 21 November). These wetter conditions are likely to persist over western Mainland Southeast Asia, but likely to ease over southern Mainland Southeast Asia, in Week 2 (22 – 28 November).

For the Maritime Continent, wetter conditions are expected over the southern parts in the next fortnight (15 – 28 November). Elsewhere, drier conditions are expected over the western and central equatorial region in Week 1 (15 – 21 November).

Warmer than usual temperature is expected over the western and central equatorial region in Week 1 (15 – 21 November), in line with the drier conditions predicted.

No clear MJO signal was present at the start of November. Most models predict the MJO to remain indiscernible based on the RMM Index during the forecast period.

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.