Which states will be hit first by heavy rain?

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Kelantan, Terengganu, and Pahang are expected to be the first states to experience prolonged heavy rain due to the North-east Monsoon.

The North-east Monsoon commenced yesterday and is projected to persist until March of the following year. Initial forecasts indicate that Kelantan, Terengganu, and Pahang will be the first to face extended periods of heavy rainfall. This pattern is typical for these three states during the early stages of the monsoon, from November to December.
Monsoon Progression and Affected Regions

Following the initial impact on the northern East Coast states, the continuous rainfall is anticipated to shift its focus. In the subsequent phase, encompassing December and January, the heavy downpours are expected to concentrate on southern Terengganu, Pahang, and Johor. Depending on the dynamics and movement of the monsoon system, Sabah and Sarawak may also experience its effects.
Monitoring and Early Warning Systems

Continuous monitoring of weather patterns is being conducted by MetMalaysia. This involves the use of satellite imagery, which is updated every ten minutes, and nineteen weather radars deployed nationwide. These tools are crucial for detecting the formation of rain clouds and identifying monsoon surges, which are identified as the primary drivers of heavy rainfall events.
Understanding Monsoon Surges and Their Impact

A monsoon surge is characterised by the presence of strong winds originating from the South China Sea. These winds gather significant moisture before unleashing continuous rainfall, often lasting between one to three days. This phenomenon is frequently cited as a trigger for flood events, underscoring the importance of monitoring these surges.

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Which states will be hit first by heavy rain?

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