The Office of Disaster Preparedness and Emergency Management (ODPEM) is urging the public to be prepared for a possible storm.
The caution comes amid a warning by the Meteorological Service that an Area of Low Pressure in the central Caribbean could develop into a tropical cyclone by tomorrow.
The Met Service has forecast that in the coming days, Jamaica will be impacted by heavy showers and thunderstorms.
The Met Office says there should be occasional heavy showers and thunderstorms over Jamaica particularly this afternoon.
And it says from tomorrow to Thursday, there will be an increase in rainfall with possible stormy weather conditions developing by Wednesday.
Fishers and other marine interests, especially those on the cays and banks, are strongly advised to exercise caution as the system remains over the area.
** Update **
A Tropical Storm Watch is now in effect for Jamaica as the area of low-pressure over the southern Caribbean has developed into a Tropical Depression and is expected to further strengthen while heading northward towards the island.
The Meteorological Service says that the Tropical Depression is moving towards the southwest near 7 km/h (five mph) and expected to maintain a drift towards the west today and tonight before turning towards the north-northeast with an increase in forward speed on Tuesday and Wednesday.
On this forecast track, the centre of the Depression would approach Jamaica’s mainland on Tuesday night or early Wednesday.