Isolated Showers, Thunderstorms Forecast Over Next 24 Hours As Hind Leg of Tropical Wave 31 Moves Across T&T

Weather Forecast (Next 24 Hours)

As of 12:00 PM Friday 2nd August 2019, partly cloudy to sunny skies are ongoing across Trinidad and Tobago, with isolated showers and overcast skies across Western parts of Trinidad and parts of interior Tobago. Daytime heating, sea breeze convergence and increased moisture associated with Tropical Wave 31’s passage will aid in the development of showers across mainly Trinidad through the evening. Additional showers are likely through the night as the hind leg of TW31 moves across the region. Street flooding, gusty winds possible in heavy showers and thunderstorms.

Tropical Wave 31 moved across T&T overnight into this morning with little noticeable change in weather. Light winds, in combination with increased atmospheric moisture, continue to create favorable conditions showers and isolated thunderstorms.

Showers and thunderstorms associated with the hind leg of TW31 as low-level convergence and upper-level divergence occur east of Trinidad and Tobago. Credit: Weathernerds.org

Isolated showers have developed over Western Trinidad due to daytime heating and sea breeze convergence. Additional showers are forecast to develop through the evening further inland, affecting mainly the western half of Trinidad and along the East-West Corridor.

Beyond the local climatic features, Tropical Wave 31 moved across the region overnight into this morning, with the hind leg of the wave forecast to traverse the region overnight. This increase in moisture and favorable atmospheric conditions is forecast to bring intermittent showers across the Southern Windwards later this evening into the night.

12:00 PM Friday 2nd August 2019 Radar Update: Isolated showers occurring across Western Trinidad. Image: Trinidad and Tobago Meteorological Service
12:00 PM Friday 2nd August 2019 Radar Update: Isolated showers occurring across Western Trinidad. Image: Trinidad and Tobago Meteorological Service

Rainfall accumulations are generally forecast to be less than 10 millimeters across both islands with isolated totals up to 20 millimeters, across the Western half of Trinidad. Heavier totals tomorrow are forecast to favor Northwestern and generally along south-facing slopes of the Northern Range, and interior Central Trinidad.

Winds are generally forecast between 15-25 KM/H by the late afternoon, with gusts up to 50 KM/H at times. Saharan dust is minimal to negligible across Trinidad and Tobago.

Street/flash flooding is possible as these showers are fairly slow-moving. Gusty winds may occur in the vicinity or during heavy showers and/or thunderstorms. Landslides may occur in landslide-prone areas.

Temperatures

Last night’s minimum temperatures were a cool 23°C at Piarco, Trinidad, and 26°C at Crown Point, Tobago. Tonight’s minimum temperatures are forecast to be near 24°C at Piarco, Trinidad, and 26°C at Crown Point, Tobago.

Today’s maximum high temperatures across T&T are forecast to be near 33°C at Piarco, Trinidad and 32°C at Crown Point, Tobago. Tomorrow, similar maximum high temperatures are forecast. 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 next day or so. Waves in open waters are forecast between 1.5 to 2.0 meters, particularly East of Trinidad and Tobago. In sheltered areas, seas to remain below 1.0 meters but choppy as spring tides are occurring. Spring tides mean higher than usual high tides and lower than usual low tides. Winds are forecast to increase from 10-15 knots to 15-20 knots over the next 24 hours, maintaining these speeds through the weekend.

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