After the India Met Department (IMD) announced the arrival of South-West monsoon over the South Andaman Sea and parts of the South Bay of Bengal, its northern limit remains unchanged.
The northern limit represents a line linking the exact coordinates where the monsoon has progressed since the onset in its journey to cover the Bay, the Arabian Sea and mainland India into June.
NORTHERN LIMIT
On Sunday morning, this line did not touch any and feature except Car-Nicobar, and lay extended from the Indian Ocean ro the South of Sri Lanka to the South-East Bay just to the West of the Andaman Islands.
But the IMD assessed that conditions are favourable for further advance of the monsoon into more parts of the South Bay, the North Andaman Sea and the Andaman Islands during next three days.
Earlier on Saturday, its onset over the south-extreme outpost in the territorial waters was announced following strengthening and deepening of of the cross-equatorial flows and enhanced cloudiness and rainfall.
The monsoon flows represent robust wind flows from South of the Equator instigated by the sustained heating of the land (mainland India) and creation of lower pressure compared to the adjacent seas.
Meanwhile on Sunday, the Myanmar Department of Meteorology and Hydrology announced that the monsoon would hit the southern parts of the country between Tuesday and Thursday.
Myanmar lies to the North-North-East of the Andaman & Nicobar Islands and is the second major milestone in the northward progression of the monsoon, ahead of the penultimate pit-stop of Sri Lanka.
'LOW' FORECAST IN BAY
The Myanmar Met saw a largely moderate monsoon, and also indicated that a low-pressure area may form over the South Bay to boost the monsoon flows.
The IMD too seemed to agree, and its wind-field projections showed a cyclonic circulation loitering around the seas South of Myanmar by May 28. This is aside of a circulation currently hovering over the Andaman Sea.
The Myanmar Met also said that the weather will remain partly cloudy to cloudy over the Andaman Sea and the South Bay for the rest of the day on Sunday and partly cloudy elsewhere over the Bay.
The Thailand Met Department has warned in its forecast forecast until Friday that all ships in the Andaman Sea should proceed with caution given the forecast for fierce thunderstorms throughout of period.
In its forecast valid until tomorrow (Monday), it said that the Andaman Sea would remain cloudy punctuated by isolated thundershowers. Westerly winds would pick up speeds of up to 35 km/hr. Waves might rise up to a height of up to two meters on an average and above two meters in thundershower areas.
The larger Indochina (that represents the land area) too would remain cloudy with isolated thundershowers. It forecast southwesterly winds of 35 km/hr prevailing over the region.