The Met Office is advising of an active Tropical Wave east of Trinidad and Tobago that will pass over the islands in the next 24 hours.
The Met Office says the Wave has a 60% chance of heavy showers and thundershowers in some areas.
The following is a bulletin issued by the Met Office.
"An active Tropical Wave is currently located east of Trinidad and Tobago with accompanying showers and thundershowers.
Information from the Meteorological Office of Trinidad and Tobago suggests that Tobago is no longer at great risk from severe weather conditions, as the Intertropical Convergence Zone (ITCZ) has since passed over the island and no longer threatens severe or heavy rainfall.
However, persons are being advised to continue being vigilant and cautious and to take the necessary measures to ensure personal safety.
Director of TEMA, Allan Stewart, has advised that while Tobago is now outside the danger zone, showers are expected throughout the day.
Weather forecast courtesy the TTMS for the period this afternoon and tonight.
Cloudy to overcast with frequent periods of light to moderate showers or rain over broad areas.
Some of these showers can become heavy and thundery.
Conditions should gradually settle from evening with lingering showers overnight of which some can become heavy or thundery.
GUSTY WINDS, STREET/FLASH FLOODING IS LIKELY IN AREAS OF HEAVYSHOWERS/THUNDERSTORMS!
Adverse Weather Alert In Effect: Orange Level! Riverine Flood Alert In Effect: Red Level!
The Water and Sewerage Authority (WASA) is advising customers that heavy rainfall over the past 48 hours continues to negatively impact operation at some of its Water Treatment Plants (WTPs) throughout Trinidad and Tobago, due to various issues including turbid river conditions, clogged intake screens and power failures.
All classes at the School of Accounting and Management (SAM) are canceled tomorrow.
SAM will be closed due to the inclement weather.
This includes all branches across the country.
Caribbean Airlines has advised that due to the adverse weather conditions currently affecting Trinidad and Tobago, the following flights for October 19, 2018 were delayed for between one to three hours.
BW 434 Port of Spain to St. Lucia
BW 435 St. Lucia to Port of Spain
BW 448 Port of Spain to Barbados
BW 449 Barbados to Port of Spain
BW 550 Port of Spain to JFK, New York
The airline is advising passengers are advised that these services are delayed and NOT cancelled.
The Met Office has raised its warning level to the highest with regard to possible riverine flooding.
Riverine flooding occurs when water levels in a river overtops its banks and spills onto surrounding areas.
The Met Office says this type of flooding is more widespread and usually lasts for several days.
Currently, river levels have exceeded threshold levels and some have already over-spilled their banks.
Additional rainfall is expected hence river levels will remain at an elevated level over the next several days.
The Ministry of Rural Development and Local Government says that as the deluge across the country continues, all 14 Disaster Management Units (DMU) remain on high alert and continue to assist persons who may be trapped in their homes due to flooding or landslides.
The ministry says that earlier today, field officers from the respective DMUs visited critical areas that were reportedly affected following yesterday’s occurrences, to conduct damage assessments and distributing relief items as quickly as possible.
The Office of Disaster Preparedness and Management (ODPM) is advising persons residing in low-lying areas with a history of flooding, to commence precautionary measures to reduce the impact of flash and riverine flooding.
Communities with a history of flooding, especially along the Caroni River Basin are urged to commence sandbagging and to take the necessary steps to preserve life and property.
The ODPM says persons should remain alert for rising river levels and possible over-spill.