Adverse Weather Alert Discontinued For T&T As Tropical Wave 53 Moves West

Adverse Weather Alert Discontinued

The Trinidad and Tobago Meteorological Service has discontinued the Adverse Weather Alert (Yellow Level) for Trinidad and Tobago as Tropical Wave 53 moves west. However, as we’ve forecast, isolated showers and thunderstorms are possible today through the weekend due to the ITCZ across our islands.

Information from the Trinidad and Tobago Meteorological Service concerning the Adverse Weather Alert Discontinuation for October 2nd, 2020.

According to the TTMS, “Most of the Thunderstorm activity is now to west of the islands and there is no longer any threat of severe weather today.

Trinidad and Tobago is NOT under any tropical storm threat, watch or warning.

The color of the alert indicates the severity of the event and the probability of the event occurring. Currently, the alert level is at Green, as the Discontinuation was issued.

Image Credit: Trinidad and Tobago Meteorological Service
Image Credit: Trinidad and Tobago Meteorological Service
Image Credit: Trinidad and Tobago Meteorological Service. Adverse Weather Alert Discontinuation.
Image Credit: Trinidad and Tobago Meteorological Service

The Forecast

Overview: A surface to low-level high-pressure ridge is forecast to briefly strengthen, reducing atmospheric moisture and increasing wind speeds across the region, particularly due to the presence of a low-level jet. Tropical Wave 52 will move across the islands today but much of the shower and thunderstorm activity will remain north of T&T. Daytime heating and sea breeze convergence are may act as triggers for late morning afternoon shower and thunderstorm development, though precipitation chances remain low for Tuesday.

Friday: During the early morning, brisk, isolated showers and thunderstorms are possible across both islands, with heavier activity favoring Northern and Eastern Trinidad, as well as Tobago. By daybreak, an increase in shower and thunderstorm activity is forecast, mainly across Trinidad, subsiding by the late morning. Throughout the remainder of the day, partly to mostly cloudy skies are anticipated across the island, with brief intervals of showers and isolated thunderstorms. Activity is forecast to increase into the night with periods of persistent rainfall, mainly favoring Northern and Eastern Trinidad and Tobago, with lower rainfall accumulations across Southwestern and Western Trinidad. Note that rainfall will be brisk and highly isolated, but these brief showers can be intense with very gusty winds.

Marine: Seas will still be moderate, with waves between 2.0 meters and 2.5 meters in open waters, returning to up to 2.0 meters by Saturday into Sunday, particularly north and east of Trinidad. Long period swells are forecast to affect our area through Friday morning. In sheltered areas, seas are still forecast to be below 1 meter and choppy, with large breaking waves in nearshore areas of our northern and eastern coastlines.

Winds are forecast to be fresh to strong, up to 20 knots (37 KM/H) from the southeast to east, peaking at 25 knots (46 KM/H).

Hazards: The main hazards include heavy rainfall, which may reduce visibility and gusty winds in downburst-like fashion, up to and in excess of 55 KM/H. Street or flash flooding will be possible in slow-moving showers and thunderstorms. In thunderstorm activity, frequent lightning is also possible. Gusty winds may cause power dips/outages, downed trees, and localized wind damage. Funnel clouds and waterspouts are also possible. With heavy rainfall across elevated areas, landslides and fallen trees will also be possible through the weekend.

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