Subseasonal Weather Outlook and Review

Subseasonal Weather Outlook (16 Jul – 31 Jul 2018)

Issued 17 Jul 2018
valid for weeks 3 and 4: 16 Jul – 31 Jul 2018

Figure 1: Rainfall Outlook

Figure 2: Temperature Outlook

Above-average rainfall is expected for the northern ASEAN region. Towards the end of the fortnight, a return to average conditions can be expected, initially over the southern areas and gradually moving northwards to affect all parts of the region.

For the southern ASEAN region, prevailing dry conditions are expected to persist for the rest of the month.

As a result of the dry conditions, temperatures in the southern ASEAN region are expected to be warm, in particular over the inland areas. Below-average temperatures are expected in the eastern part of Mekong sub-region.

There are indications of an MJO developing over the Maritime Continent (Phase 4) and is forecast to move slowly eastwards (Phases 5 and 6), which is consistent with the rainfall and temperature outlooks.

The outlook is assessed for the region in general. For specific updates on the national scale, the relevant ASEAN National Meteorological and Hydrological Services should be consulted.

Subseasonal Weather Outlook (16 Jul – 31 Jul 2018)

Issued 17 Jul 2018
valid for weeks 3 and 4: 16 Jul – 31 Jul 2018

Figure 1: Rainfall Outlook

Figure 2: Temperature Outlook

Above-average rainfall is expected for the northern ASEAN region. Towards the end of the fortnight, a return to average conditions can be expected, initially over the southern areas and gradually moving northwards to affect all parts of the region.

For the southern ASEAN region, prevailing dry conditions are expected to persist for the rest of the month.

As a result of the dry conditions, temperatures in the southern ASEAN region are expected to be warm, in particular over the inland areas. Below-average temperatures are expected in the eastern part of Mekong sub-region.

There are indications of an MJO developing over the Maritime Continent (Phase 4) and is forecast to move slowly eastwards (Phases 5 and 6), which is consistent with the rainfall and temperature outlooks.

The outlook is assessed for the region in general. For specific updates on the national scale, the relevant ASEAN National Meteorological and Hydrological Services should be consulted.