What you need to know
— What: Trailing convergence from Tropical Wave 44/Invest 98L, now located in the Caribbean Sea combined with marginally favorable upper- and low-level conditions and deep-layered moisture are forecast to lead to isolated to scattered showers and thunderstorms.
— Where: On Monday, both islands are forecast to experience isolated to scattered rainfall, with rainfall totals ranging between 5 and 15 millimeters, with isolated totals across northern and eastern areas between 20 and 35 millimeters. Gusty winds (45-55 km/h) are possible, with higher gusts across Tobago and in heavy shower/thunderstorm activity across both islands.
— When: The TTMS has issued the Adverse Weather Alert from noon Saturday, October 18th, 2025, through 10:00 PM Monday, October 20th, 2025, capturing the most intense activity.
— Impacts: Street/flash flooding and localized ponding are likely in heavy downpours, accompanied by gusty winds exceeding 45 km/h. These wind gusts, combined with heavy rainfall, may lead to fallen trees/utility poles/lines and landslides, as well as localized wind damage and agitated seas. In strong thunderstorm activity, frequent lightning is likely, with the possibility of funnel clouds on Monday. All major rivers remain well contained following heavy rains on Sunday.
— What Should You Do: Secure loose outdoor objects. Motorists and residents in areas prone to flooding or landslides should remain alert and exercise caution. Be aware of your surroundings and changing weather conditions. Take necessary precautions to mitigate potential impacts. If you encounter flood waters, turn around. If you hear thunder, head indoors.
Latest Alerts
High Wind Alert Remains In Effect For T&T
Trinidad and Tobago is NOT under any tropical storm or hurricane threat, watch, or warning at this time.
The Adverse Weather Alert
The Trinidad and Tobago Meteorological Service updated the Adverse Weather Alert (Yellow Level) on Monday, October 20th, 2025, at 10:20 AM. The alert went into effect at noon (12:00 PM) Saturday, October 18th, 2025, and remains in effect for Trinidad, Tobago, and surrounding waters, through 10:00 PM Monday, October 20th, 2025.
According to the TTMS, this “alert” status considers the possibility of the event occurring. This adverse weather event has been observed, and the following are very likely, according to the TTMS:
- The axis of an active tropical wave is now over the Caribbean sea, as it continues to move steadily away from the region. Despite this, trailing moisture and instability are expected to occasionally produce pockets of heavy showers and isolated thunderstorms. While conditions may become settled at times, the atmosphere will remain fairly conducive to impactful weather.
- Impacts: Due to saturated soils, additional heavy rainfall can lead to isolated street/flash flooding as well as localized ponding, and may trigger landslides/landslips especially along hillsides and other vulnerable areas. Gusty winds can also occur in the vicinity of heavy showers/thunderstorms which may displace loose outdoor items and further agitate seas.
The alert’s color indicates the event’s severity and the likelihood of its occurrence. Currently, the alert level is Yellow. This means the hazards are very likely, and the severity of the impacts is moderate for this particular alert. You should be aware of the hazards in your area, which include street or flash flooding, gusty winds exceeding 45 km/h, falling trees, landslides, and agitated seas.
A moderate Adverse Weather Alert can result in possible injuries and behavioral changes, which are necessary to ensure safety. Minor property damage may also occur, temporarily disrupting income-earning activities and affecting several communities.
The Met Office advises the public to secure loose outdoor objects. Motorists and residents in areas prone to flooding or landslides should remain alert and exercise caution. Be aware of your surroundings and changing weather conditions. Take necessary precautions to mitigate potential impacts.
