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1. Review of Regional Weather Conditions in October 2008
1.1 The Southwest Monsoon gradually transitioned to the Inter-Monsoon in early October 2008 as the prevailing southeasterly to southwesterly winds weakened and became more variable in direction
1.2 The southern ASEAN region experienced more frequent diurnal-type weather conditions in October 2008 which are characterised by scattered showers and thunderstorms mostly in the afternoon and evening. This marked the end of the dry season for the region. In the northern ASEAN region, wet weather conditions continued to affect most parts of the region during the month. Heavy rains in late October 2008 resulted in severe landslides and flooding in central and northern Vietnam.
1.3 During October 2008, most parts of the region received normal to above normal rainfall, except for northern Peninsular Malaysia, southern Thailand, Cambodia and Myanmar. The rainfall pattern during October 2008 is shown in
Fig. 1.
Fig 1. Percentage of Normal Rainfall for October 2008
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