Isolated Showers To Interrupt A Mostly Settled Night. Hot & Sunny Wednesday Ahead.

Weather Forecast (Next 24 Hours)

As of 6:30 PM Tuesday 23rd July 2019, mostly clear skies are occurring across the southern half of Trinidad and western half of Tobago, with partly cloudy conditions elsewhere and isolated showers occurring. An increase in showers are forecast over the next 1-3 hours, becoming settled by the late night. Another round of showers forecast by the early morning, leading into a mostly hot and sunny Wednesday. Isolated showers, particularly during the late morning through afternoon possible, interrupting hot, sunny and breezy conditions.


9:20 PM Tuesday 23rd July 2019 Update

Scattered showers are occurring across parts of Trinidad, and is now forecast to do so throughout the night into Wednesday morning. A weak low to mid-level trough is interacting with Tropical Wave 27. This interaction, coupled with abundant moisture and weak wind shear is allowing heavier showers and even the isolated thunderstorm to develop across the Southern Windwards overnight.

Overall rainfall accumulations totals have been bumped up slightly, to generally less than 10-15 millimeters across Trinidad and Tobago, with less than 25 millimeters in isolated areas.

In addition, isolated to scattered showers (instead of a few isolated) showers are forecast tonight, with a low chance of a thunderstorm, favoring Eastern Trinidad.

Parts of West-Central Trinidad, including Freeport, Chase Village, Couva and surrounding areas have already picked up 10-15 millimeters of rainfall between 7:00 PM and 9:00 PM Tuesday.

Street flooding is possible in areas that receive prolonged or locally heavy rainfall.

 A low to mid-level trough is interacting with Tropical Wave 27 as both move in tandem westward across the Eastern Caribean, triggering cloudy conditions and isolated to scattered showers. Street flooding possible in heavier showers and/or thunderstorms. Credit: Weathernerds.org
A low to mid-level trough is interacting with Tropical Wave 27 as both move in tandem westward across the Eastern Caribean, triggering cloudy conditions and isolated to scattered showers. Street flooding possible in heavier showers and/or thunderstorms. Credit: Weathernerds.org
 9:15 PM Tuesday 23rd July 2019 Radar Update: Isolated to scattered showers approaching mainly Trinidad at this time, with isolated heavy pockets of rainfall. Image: Trinidad and Tobago Meteorological Service
9:15 PM Tuesday 23rd July 2019 Radar Update: Isolated to scattered showers approaching mainly Trinidad at this time, with isolated heavy pockets of rainfall. Image: Trinidad and Tobago Meteorological Service


7:10 PM Tuesday 23rd July 2019 Update

An isolated thunderstorm is approaching Eastern Trinidad. Locally heavy rainfall, thunder, lightning, and possible street flooding may occur, favoring Eastern Trinidad.

An isolated thunderstorm is approaching Eastern Trinidad, as lightning has been detected with moderate to strong convection. Credit: Weathernerds.org
An isolated thunderstorm is approaching Eastern Trinidad, as lightning has been detected with moderate to strong convection. Credit: Weathernerds.org

As the axis of Tropical Wave 27 inches closer to the region, shallow low-level moisture and instability will allow for partly cloudy to cloudy skies with some light to moderate isolated showers to continue.

These showers will be brisk tonight through tomorrow, interrupting mostly settled and breezy conditions.

6:15 PM Tuesday 23rd July 2019 Radar Update: Isolated to scattered showers approaching mainly Trinidad at this time, with isolated heavy pockets of rainfall. Image: Trinidad and Tobago Meteorological Service
6:15 PM Tuesday 23rd July 2019 Radar Update: Isolated to scattered showers approaching mainly Trinidad at this time, with isolated heavy pockets of rainfall. Image: Trinidad and Tobago Meteorological Service

An increase in showers is forecast mainly across Trinidad over the next 1-3 hours, and again by the early morning.

Winds are generally forecast between 20-30 KM/H by the late afternoon, with gusts up to 40 KM/H at times. Saharan dust is present in mild to minimal concentrations across Trinidad and Tobago, with peak concentrations occurring today.

Temperatures

Last night’s minimum temperatures were 25°C at Piarco, Trinidad, and 26°C at Crown Point, Tobago. Tonight’s minimum temperatures are forecast to be near 25°C at Piarco, Trinidad, and 26°C at Crown Point, Tobago.

Today’s maximum high temperatures across T&T was 32.2°C at Piarco, Trinidad and 31.5°C at Crown Point, Tobago. On Wednesday, maximum high temperatures across T&T are forecast to be near 33°C at Piarco, Trinidad, and 32°C at Crown Point, Tobago. Heat indices may top at 37°C across Trinidad and 34°C across Tobago. The heat index is an index that combines air temperature and relative humidity, generating a “feel’s like” temperature.

Seas

Seas are forecast to remain moderate in open waters through the weekend. Waves in open waters are forecast up to 2.0 meters, particularly East of Trinidad and Tobago over the 3 days. In sheltered areas, seas to remain near calm through the weekend with winds at 15-20 knots from the east to northeast.

Mild to Minimal Saharan Dust Concentrations Across T&T

Saharan Dust: As of 6:00 PM Tuesday 23rd July 2019, Saharan Dust concentrations are mild to minimal across Trinidad and Tobago, with another mild surge forecast Thursday into Friday. Air quality remains between good to moderate levels.

Tropical Update

Tropical Weather Update:
— Tropical Wave 26: This tropical wave moved across Trinidad and Tobago over the last 24 hours, bringing no significant change to weather across T&T, beyond a surge in Saharan Dust.
— Tropical Wave 27: This tropical wave is embedded with a surge of Saharan Dust. A mild increase in low-level moisture and marginal instability may bring some showers, mainly north of T&T over the next 24 hours. No significant rainfall forecast.
— Tropical Wave 28: This tropical wave is located further east, forecast to move across the Lesser Antilles on Thursday. A dry atmosphere is forecast to persist, inhibiting showers. No significant rainfall is forecast, but we can expect isolated showers interrupting mostly sunny skies across T&T, particularly on Thursday.
— Tropical Wave 29: This tropical wave has just moved off the West African Coast, more than 5 days away from T&T. While it is too soon to tell definitive impacts, a notable surge of moisture is forecast to move across the Lesser Antilles at the beginning of next week, increasing the chances of showers and possible thunderstorms.
— Tropical Depression Three: As of 11:00 AM, this tropical depression has dissipated as it curves away from the Southeastern U.S. Atlantic Coast.
— Gulf of Mexico Area of Interest: The National Hurricane Center is monitoring this area for the formation of a non-tropical low-pressure system, which may acquire tropical characteristics by the end of the week. Low chances of development.

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