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.
ODPEM Director General Ronald Jackson says the agency has taken note of the forecast adding that tropical cyclones usually develop without warning.
Against this background, he is advising persons, especially those living in low-lying and flood-prone areas, to begin to take the necessary precautions.
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.