Adverse Weather Alert Issued For T&T As Tropical Wave 04 Nears

An active tropical wave is approaching Trinidad and Tobago with periods of rain, showers, and thunderstorms likely across the country, particularly across Trinidad. This tropical wave (Tropical Wave 04) is the first of three to affect the country over the next five to six days, with rounds of heavy rainfall and gusty winds forecast.

Tropical Wave 05 is forecast to move across the country on Wednesday, and Tropical Wave 06 is forecast to arrive across the country by Friday into Saturday – both bringing additional rounds of rainfall.

What you need to know

— Rainfall: For this initial alert period, forecast models indicate at least 20 and 50 millimeters of rainfall across most of Trinidad and Tobago, with higher rainfall totals in the eastern and southern parts of both islands, as well as isolated western coastal areas of Trinidad. However, rainfall totals nearing 100 millimeters are likely across the eastern and southern halves of Trinidad due to repeated rounds of persisting rainfall, which at times may occur in heavy showers and thunderstorms.
— Hazards: With heavy showers and thunderstorms, as well as periods of rain, many of the typical Wet Season hazards are on the table for the next five days. Street and flash flooding is likely in heavy rain, showers, and thunderstorms, accompanied by wind gusts exceeding 50 km/h, and lightning during thunderstorm activity. From Wednesday, as soils become increasingly saturated, landslides are possible in elevated areas. Seas may become locally rough or agitated during heavy showers or thunderstorm activity.

Latest Alerts

Adverse Weather Alert Discontinued For Western Trinidad

Localized heavy showers and thunderstorms moved across western Trinidad on Monday, leading to isolated street and flash flooding. Areas affected included Boissiere, Chaguanas Proper, Duncan…

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 issued an Adverse Weather Alert (Yellow Level) on Monday, June 9th, 2025, at 4:06 PM for Trinidad and Tobago. The alert goes into effect from 2:00 AM Tuesday, June 10th, 2025, through 4:00 PM Wednesday, June 11th, 2025. Impactful weather is likely to occur ahead of and beyond this alert period due to additional moisture and instability flowing across T&T, particularly with favorable low- and upper-level conditions.

Adverse Weather Alert information from the Trinidad and Tobago Meteorological Service
Adverse Weather Alert information from the Trinidad and Tobago Meteorological Service

According to the TTMS, this period of inclement weather is “associated with atmospheric instability expected from early morning. The most impactful weather is expected mainly over southern and eastern offshore areas tomorrow morning, slowly extending across Trinidad and Tobago.”

This “alert” status considers the possibility of the event occurring. This adverse weather event is likely, and the following impacts are likely, according to the TTMS:

  • Gusty winds with varying intensities are expected in the vicinity of heavy downpours.
  • Impacts include temporary traffic disruptions, street flooding and localised ponding, displacement of objects by gusts, and difficulty anchoring marine craft.
  • These conditions and impacts are expected in intervals over the period.

The alert’s color indicates the severity of the event and the probability of its occurrence. Currently, the alert level is Yellow. This means that the hazards are likely, and the severity of the impacts is moderate for this particular alert. You should be aware of the hazards in your area, which are primarily associated with street or flash flooding, gusty winds exceeding 50 km/h, possibly 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, and motorists and residents in flood-prone areas should exercise caution and take necessary precautions to mitigate potential impacts, and monitor official weather updates

This image has an empty alt attribute; its file name is AlertLevel_ImpactSeverity-1024x491.jpg
Image Credit: Trinidad and Tobago Meteorological Service
This image has an empty alt attribute; its file name is YELLOW-LEVEL.png

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