The Meteorological Service has issued a flash flood watch for low-lying and flood-prone areas of southern parishes.
The affected parishes are St Thomas, Kingston and St Andrew, St Catherine, Clarendon, Manchester, St Elizabeth and Westmoreland.
The watch will remain in effect until 5pm on Thursday.
According to a release from the Met Service on Wednesday, the tropical wave west of Jamaica is currently interacting with an area of low pressure across the south-western Caribbean.
This system is expected to remain across the south-central and western Caribbean over the next few days, resulting in unstable weather across Jamaica.
“Projections are for periods of showers and thunderstorms which may be heavy at times, to affect sections of most parishes, especially southern parishes, continuing this afternoon through to Friday morning,” the Met Service said.
Fishers and other marine interests, especially on the south coast, should exercise extreme caution as sea conditions will deteriorate in the vicinity of showers, thunderstorms and strong gusty winds.
A flash flood watch means that flash flooding is possible, and residents are advised to take precautionary measures, keep informed by listening to further releases from the Met Service, and be ready for quick action if flooding is observed or if a warning is issued.
The Met Service said it will continue to monitor the system.