The Meteorological Service on Tuesday evening issued a Flash Flood Warning for Portland, St Mary, St Ann, Trelawny, and St James, effective until 5pm on Wednesday.
It also extended the Flash Flood Watch for low-lying and flood-prone areas of all remaining parishes.
The Met Service said n a news release that a persistent trough across the central Caribbean continues to influence weather conditions across Jamaica.
“Observational data indicate that light to moderate and at times heavy showers and thunderstorms occurred across sections of most parishes throughout this afternoon (Tuesday) and is expected to linger into the night,” it said, adding that the forecast is for periods of showers and thunderstorms to continue into tonight, especially across sections of northern parishes.
The Met Service also said light to moderate morning showers and isolated thunderstorms are expected across sections of north-central and eastern parishes, with moderate to heavy afternoon showers and thunderstorms across sections of most parishes.
According to the Met Service, a flash flood warning means flooding has been reported or will occur shortly.
“Motorists and pedestrians should not attempt to cross flooded roadways or other low-lying areas as strong currents are likely,” it said. “Residents in low-lying areas should be on the alert for rising waters and be ready to move quickly to higher ground.”
A Flash Flood Watch means that flash flooding is possible and residents are advised to take precautionary measures, keep informed and be ready for quick action if flooding is observed or if a Warning is issued.