Live Updates – Tropical Wave 10 & The ITCZ

Tropical Wave 10 is forecast to move across Trinidad and Tobago on June 18th, the continuing the multi-day heavy rainfall and severe weather event. Periods of showers, rain, and thunderstorms are expected. Heavy rainfall may trigger street or flash flooding. Gusty winds in excess of 60 KM/H may cause downed trees, utility poles, and lines, as well as brief power outages. Landslides/landslips are possible. Live Updates for Tropical Wave 10 have ended.

Isolated Rainfall Totals Up To 40 Millimeters

12:25 AM Friday 19th June 2020

Based on publicly reporting weather stations across Trinidad and Tobago, much of Trinidad and Tobago saw rainfall accumulations less than 10 millimeters, with a few areas across Western Trinidad receiving up to 40 millimeters.

Higher rainfall accumulations likely occurred across parts of Eastern and extreme southwestern Trinidad based on satellite observations where the strongest convection was observed.

24-Hour Rainfall Accumulations Across Trinidad and Tobago


Adverse Weather Alert Discontinued

8:53 PM Thursday 18th June 2020

The Trinidad and Tobago Meteorological Service has discontinued the Adverse Weather Alert as the impactful weather associated with Tropical Wave 10 has passed.

Adverse Weather Alert Discontinued. Click for more information.
Adverse Weather Alert Discontinued. Click for more information.


Street Flooding Continues Along French Street near Wrightson Road

4:00 PM Thursday 18th June 2020

Street flooding continues along French Street, Port of Spain after more than 25 millimeters of rain fell in the area this afternoon.



Street Flooding Along Western Main Road

3:30 PM Thursday 18th June 2020

Street flooding along the Western Main Road (westbound) in the vicinity of West Mall following heavy showers. Expect traffic delays.



Heavy Showers, Gusty Winds Move Across Trinidad

2:45 PM Thursday 18th June 2020

Gusty winds associated with heavy to violent showers are moving across parts of Sangre Grande Thursday afternoon. The axis of Tropical Wave 10 is moving across Trinidad presently.



Showers, Thunderstorms Move Onshore Trinidad

2:45 PM Thursday 18th June 2020

Showers and thunderstorms are moving onshore Trinidad and affecting Tobago as the axis of TW10 remain just offshore Trinidad.

Locally heavy rainfall will trigger street/flash flooding. Gusty winds up to 60 KM/H and frequent lightning may cause power dips, downed trees, and localized wind damage.



Street Flooding In Port of Spain, Cocorite

2:10 PM Thursday 18th June 2020

Street flooding is ongoing along French Street onto Wrightson Road as well as along the Audrey Jeffers Highway at Cocorite (under the tunnel) Expect traffic delays.



Heavy Rainfall Across Western Port of Spain

1:52 PM Thursday 18th June 2020

Heavy rainfall across parts of Port of Spain Thursday afternoon as showers move across the islands.



Showers, Thunderstorms Approaching T&T

1:30 PM Thursday 18th June 2020

Moisture associated with Tropical Wave 10 is moving across Trinidad and Tobago, fueling showers and isolated thunderstorms.

The axis of the wave will move across T&T this afternoon, triggered scattered to widespread showers and thunderstorms mainly across Trinidad

Gusty winds in excess of 60 KM/H expected, accompanying locally heavy showers and isolated thunderstorms. Street/flash flooding and frequent lightning are also possible through tonight.



Isolated Thunderstorm Produces Violent Rainfall Across Northwestern Trinidad

12:19 PM Thursday 18th June 2020

An isolated thunderstorm produced light to moderate rainfall across parts of Eastern Port of Spain just after midday, with heavy to violent rainfall across parts of Western Port of Spain and Diego Martin as the isolated cell moved into the Gulf of Paria.

Violent rainfall rates dumped 15+ millimeters of rainfall across parts of Northwestern Trinidad inside 20 minutes between 12:00 PM and 12:20 PM
Violent rainfall rates dumped 15+ millimeters of rainfall across parts of Northwestern Trinidad inside 20 minutes between 12:00 PM and 12:20 PM


Adverse Weather Alert Updated, Now Through Midnight

11:00 AM Thursday 18th June 2020

A new Adverse Weather Alert (Yellow Level) will go into effect at 2 PM through midnight tonight as Tropical Wave 10 affects the islands. Heavier activity is forecast to favor southern and eastern Trinidad, with possible activity continuing into Friday.



Tropical Wave 09 Moves East, Tropical Wave 10 Nears T&T.

10:30 PM Wednesday 17th June 2020

As Tropical Wave 09 moves west, a brief surge of Saharan Dust has moved in across Trinidad and Tobago, ahead of Tropical Wave 10. Model guidance have backed off higher rainfall totals through the next 24-48 hours, likely due to the influence of the Saharan Dust plume on convection.

However, isolated thunderstorms remain in the forecast tomorrow, as well as isolated to scattered showers due to favorable upper-level conditions and abundant moisture moving across the islands, particularly by the mid to late morning on Thursday. Isolated showers are also possible overnight, favoring Trinidad.

Tropical Waves that exist in the Atlantic Basin that have moved/forecast to move across Trinidad and Tobago over the next 5 days as seen on total precipitable water imagery (CIMSS)
Tropical Waves that exist in the Atlantic Basin that have moved/forecast to move across Trinidad and Tobago over the next 5 days as seen on total precipitable water imagery (CIMSS)


Adverse Weather Alert Extended Until 6 PM Thursday

3:00 PM Wednesday 17th June 2020

Adverse Weather Alert #2 Yellow Level now in effect through 6 PM Thursday as Tropical Wave 10 now approaches the region, interacting with the ITCZ.

Click for details


T&T’s First Prolonged, Heavy Rainfall Event To Begin

8:00 PM Tuesday 16th June 2020

Over the next 5-6 days, four tropical waves are forecast to traverse T&T, in conjunction with the ITCZ, bringing periods of flooding rainfall and gusty winds to the islands.

Beginning after midnight tonight, Tropical Wave 09, which has a low (10%) chance of tropical cyclone development, will begin to affect T&T with periods of showers and thunderstorms throughout tomorrow.

What to expect over the next 6 days:

  • Wednesday: Tropical Wave 09 (Widespread Rainfall, Adverse Weather Alert)
  • Thursday: Tropical Wave 10 (Widespread Rainfall, Adverse Weather Alert)
  • Friday: Brief Saharan Dust Surge
  • Saturday: Trade Wind Surge/Tropical Wave 11
  • Sunday/Monday: Tropical Wave 12
  • Late Monday: Major Saharan Dust Surge


Adverse Weather Alert (Yellow Level) Issued For T&T

3:30 PM Tuesday 16th June 2020

Back-to-back tropical waves and the ITCZ are forecast to bring heavy rainfall, gusty winds and agitated sea conditions to T&T through the remainder of the week.

The Adverse Weather Alert (Yellow Level) will go into effect at 5 AM Wednesday through 4 PM Thursday, though inclement weather may continue through the weekend.



Another Tropical Wave Forecast To Keep ITCZ Across T&T

Sunday 14th June 2020



Overall Rainfall Accumulations Begin to Increase

Sunday 14th June 2020

Forecast confidence begins to increase as more and more models consistently show the ITCZ moving across T&T, dumping heavy rainfall across the islands.



The ITCZ & Tropical Waves 09 & Tropical Wave 10 – T&T’s First Heavy Rainfall Event For 2020

Saturday 13th June 2020

Since Saturday, we’ve been monitoring Tropical Wave 09 and Tropical Wave 10 for T&T’s first heavy rainfall event for 2020. We are also keeping an eye on Tropical Wave 09 for tropical cyclone formation.



Facebook Comments