Live Updates – Tropical Wave 33 & The ITCZ

This post will be updated over the next 24-36 hours as Tropical Wave 33 and the ITCZ moves across the Lesser Antilles. Street/flash flooding, gusty winds, landslides/mudslides, downed trees & utility poles possible.


1:45 PM Thursday 8th August 2019

Street flooding ongoing across parts of Lower Port of Spain, and along the Eastern Main Road in the vicinity of Beetham Gardens and First Citizens Bank, Barataria.

An isolated thunderstorm that has triggered street flooding across parts of West-Central Trinidad is moving northwest, bringing lightning and thunder, as well as locally heavy rainfall, to parts of NW Trinidad. Hot and partly conditions to return in an hour or so across West-Central and Northwestern Trinidad.

Hot and mostly sunny conditions continue across the remainder of Trinidad. Additional isolated showers and thunderstorms possible later this afternoon.

An isolated thunderstorm moving northwest away from Trinidad. Street/flash flooding still possible across NW Trinidad. Credit: Weathernerds.org


1:35 PM Thursday 8th August 2019

Street flooding is ongoing across the Caroni Savannah Road in the vicinity of Endeavour and Charlieville as well as along the Chan Ramlal Street, in the vicinity of Chan Ramlal and Medford.

Street flooding is ongoing across the Caroni Savannah Road in the vicinity of Endeavour and Charlieville
Street flooding is ongoing across the Caroni Savannah Road in the vicinity of Endeavour and Charlieville
Street flooding is ongoing across the Chan Ramlal Road.
Street flooding is ongoing across the Caroni Savannah Road in the vicinity of Endeavour and Charlieville


1:30 PM Thursday 8th August 2019

Heavy showers and thunderstorms are approaching Northwestern Trinidad, presently occurring across Western Trinidad, north of Chaguanas. Street flooding ongoing across parts of Chaguanas and Endeavour.

 1:30 PM Thursday 8th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing isolated heavy showers across Western Trinidad. Street flooding, gusty winds likely.
1:30 PM Thursday 8th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing isolated heavy showers across Western Trinidad. Street flooding, gusty winds likely.
Lightning detected across Northwestern Trinidad between 1:28 PM and 1:30 PM
Lightning detected across Northwestern Trinidad between 1:28 PM and 1:30 PM


12:30 PM Thursday 8th August 2019

Isolated heavy showers are developing across Western Trinidad, slowly moving to the northwest. These showers are forecast to develop into a thunderstorm as it progresses towards Northwestern Trinidad. Street flooding, lightning, and thunder likely.

This activity is due to daytime heating, sea breeze convergence and an overall light wind regime due to the passage of Tropical Wave 33. In addition, high atmospheric moisture is present across the region.

12:30 PM Thursday 8th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing isolated heavy showers across Western Trinidad. Street flooding, gusty winds possible.
12:30 PM Thursday 8th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing isolated heavy showers across Western Trinidad. Street flooding, gusty winds possible.


11:30 AM Thursday 8th August 2019

11:30 AM Thursday – A textbook tropical wave is moving across the Lesser Antilles. While thunderstorms and showers have favored the French Antilles and Leewards, sunny skies have prevailed this morning across T&T due to unfavorable low-level atmospheric conditions.

By the late afternoon, showers and thunderstorms are likely across parts of Western and Northern Trinidad. In the meantime, hot, humid and sunny conditions are likely to continue.

For more information on Tropical Waves, see below.



6:40 PM Wednesday 7th August 2019

According to the Tobago Emergency Management Agency, A landslide has been reported along the Northside Road, Tobago, in the vicinity of Runnemede and Castara. Single-lane traffic is ongoing. Motorists are advised to exercise caution in and around the area. Officials en route to conduct preliminary assessments.



6:00 PM Wednesday 7th August 2019

Tropical Wave 33 is forecast to move across the Windwards over the next 24 hours. Periods of showers and thunderstorms forecast across T&T, interrupting mostly dismal skies.

Street/flash flooding, gusty winds and landslides possible, favoring Northern and Western halves of Trinidad, as well as Tobago.



11:00 AM Wednesday 7th August 2019

Isolated to scattered showers are favoring the northern, western and eastern Trinidad with isolated heavy pockets. Street flooding possible, particularly across Western and Northwestern Trinidad.

11:00 AM Wednesday 7th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing isolated to scattered showers across the Western half of Trinidad, with isolated showers across the remainder of Trinidad and Tobago. Isolated heavy pockets are also occurring, interrupting mostly cloudy to overcast skies. Tropical Wave 33 is approaching the islands, while the ITCZ is across the region. Street flooding, gusty winds possible.
11:00 AM Wednesday 7th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing isolated to scattered showers across the Western half of Trinidad, with isolated showers across the remainder of Trinidad and Tobago. Isolated heavy pockets are also occurring, interrupting mostly cloudy to overcast skies. Tropical Wave 33 is approaching the islands, while the ITCZ is across the region. Street flooding, gusty winds possible.


8:00 AM Wednesday 7th August 2019

Showers and thunderstorms associated with Tropical Wave 33 and the ITCZ have flared up east of Trinidad and Tobago, south and east of Barbados. This activity is forecast to move across the Southern Windwards later today.

With favorable conditions for heavy shower and thunderstorm development, combined with light winds, slow-moving convection may cause high total rainfall accumulations and trigger street/flash flooding and landslides over the next 24-36 hours.

GOES-East IR-13 Satellite Imagery showing scattered convection (showers and thunderstorms) east of Trinidad and Tobago. Tropical Wave 33 and the ITCZ are affecting T&T, forecast to bring showers and thunderstorms this evening and tomorrow. Street/Flash Flooding, Gusty Winds possible. The heaviest rainfall accumulations and thunderstorms likely across mainly Trinidad.


8:30 PM Tuesday 6th August 2019

Showers and thunderstorms are approaching Southern Trinidad. Locally heavy rainfall, lightning, thunder and street/flash flooding possible. An isolated thunderstorm is also ongoing north of Trinidad.

Showers and thunderstorms are nearing Trinidad. Street/flash flooding, gusty winds, and landslides possible. Credit: Weathernerds.org


7:30 PM Tuesday 6th August 2019

A locally heavy shower is occurring along the East-West Corridor, between D’Abadie and San Juan with violent rainfall rates occurring, up to 100 mm/hour. Street/flash flooding along the Eastern Main Road likely. In addition, street flooding possible on the eastbound lanes of the Churchill Roosevelt Highway at the Mausica Pricemart.

 7:15 PM Tuesday 6th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing an isolated heavy shower across the East-West Corridor with scattered showers and isolated thunderstorms approaching T&T. Street flooding, gusty winds possible.
7:15 PM Tuesday 6th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing an isolated heavy shower across the East-West Corridor with scattered showers and isolated thunderstorms approaching T&T. Street flooding, gusty winds possible.


7:25 PM Tuesday 6th August 2019

Moderate to strong convection is waning at it nears Trinidad over the next 1-2 hours. Locally heavy showers and isolated thunderstorms expected.

Showers and thunderstorms are nearing Trinidad. Street/flash flooding, gusty winds, and landslides possible. Credit: Weathernerds.org
Showers and thunderstorms are nearing Trinidad. Street/flash flooding, gusty winds, and landslides possible. Credit: Weathernerds.org


7:00 PM Tuesday 6th August 2019

Scattered showers and isolated thunderstorms, as forecast, are nearing Trinidad and Tobago. Activity is forecast to begin on land over the next 1-2 hours across Trinidad and Tobago, with the exception of Northern and Northwestern Trinidad, where an isolated shower is ongoing.

7:00 PM Tuesday 6th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing scattered showers and isolated thunderstorms approaching T&T. Street flooding, gusty winds possible.
7:00 PM Tuesday 6th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing scattered showers and isolated thunderstorms approaching T&T. Street flooding, gusty winds possible.


6:00 PM Tuesday 6th August 2019

Periods of showers are forecast overnight through Wednesday across T&T, interrupting partly cloudy skies.

Isolated thunderstorms may favor Southern and Eastern Trinidad overnight and Western and Northern Trinidad on Wednesday.

Street/flash flooding, gusty winds, landslides possible.



5:20 PM Tuesday 6th August 2019

As expected, street flooding is ongoing along the Couva Main Road, Couva. Delay travel in the area if possible.



5:00 PM Tuesday 6th August 2019

Heavy to violent rainfall rates continue and an isolated thunderstorm affects the Couva area with rainfall rates between 100 mm/hour to 145 mm/hour. Over the last 25 minutes, over 40 millimeters of rainfall has fallen across the area. Street/flash flooding ongoing or imminent. Scattered showers approaching Eastern Trinidad and occurring across Tobago.

4:45 PM Tuesday 6th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing isolated thunderstorms across mainly Western Trinidad. Scattered showers approaching Trinidad and isolated showers occurring across Tobago. Street flooding, gusty winds possible.


4:40 PM Tuesday 6th August 2019

A heavy shower has been persisting across West-Central Trinidad. Rainfall rates in excess of 100 millimeters per hour are ongoing, with 20 millimeters of rainfall recorded in Couva within 10 minutes, between 4:29 PM and 4:39 PM. Street/flash flooding ongoing or imminent in the area.

4:30 PM Tuesday 6th August 2019 Radar Imagery from the Trinidad and Tobago Meteorological Service showing isolated thunderstorms across mainly Western Trinidad. Street flooding, gusty winds possible.

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