Forecast: Isolated Showers Interrupting Partly Cloudy Skies. King Tides Are Occurring.

Forecast for the next 24 hours, beginning 12:00PM Monday 18th February 2019.

Isolated showers are occurring across parts of Southern and Central Trinidad. An upper-level jet over the region is enhancing some showery activity, mainly across Southern Trinidad. Brisk isolated showers are to continue through the afternoon, interrupting partly cloudy and hazy skies across mainly Central and Southern Trinidad. Northern Trinidad and Tobago will continue to see partly cloudy and hazy skies throughout the evening.

These showers are due to mild increases in low-level moisture, as well as low-level cloud patches moving across the region. These cloud patches are a result of surface to low-level confluence (convergence) around the dominating Atlantic high-pressure system.

By the late evening, mostly settled conditions are expected, with the low chance of a brisk, isolated shower favoring Southern and Eastern Trinidad. A slight increase in isolated showers is expected during the early morning on Tuesday. Increasing low-level moisture, as well as continuing surface to low-level convergence will increase cloudy periods on Tuesday. T&T may also see more isolated shower activity, which may be moderate at times with gusty winds.

Temperature Forecast

Temperatures are expected to remain warm throughout the next 24-36 horus, with lows in Trinidad between 24-25°C and highs 31-32°C. In Tobago, similar temperatures are expected with lows of 24-25°C and highs of 29-30.5°C. These milder low temperatures, particularly across Trinidad, are due to increased low level moisture, reducing the efficiency of longwave radiation cooling the surface at night.

Rainfall Accumulation

No significant rainfall is expected over the next 36 hours as meteorological drought conditions persist. Generally, less than 10 millimeters of rainfall is possible, favoring Eastern Trinidad through the next 36 hours, with less than 5 millimeters elsewhere.


Seas through are expected to be moderate in open waters, with waves between 1.5 and 2.0 meters. In sheltered areas, less than 1.0-meter waves are expected. Winds are expected to remain from the east to northeast, between 15-20 knots through Friday. King tides are occurring, due to the upcoming Supermoon expected tomorrow. Higher than normal high tides and lower than normal low tides are expected, which may produce minor coastal flooding in low-lying coastal areas.

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