This post will be updated over the next several hours as Tropical Wave 19 moves across Trinidad, Tobago, and the Windward Islands. Street/Flash flooding, gusty winds, landslides/mudslides, downed trees & utility poles possible.
3:00 PM Friday 12th July 2019
Tropical Wave 19 continues to move westward, with much of the heavier showers and thunderstorms remaining north of Trinidad and Tobago.
Isolated showers have developed across T&T, generally moving WNW. These conditions are forecast to persist, with chances increasing later this evening of scattered showers as the tail end of this wave moves across T&T.
By the second half of Saturday, mostly sunny (and hazy) skies are forecast to return to the region as a brief surge of Saharan Dust returns to the region.
2:00 PM Friday 12th July 2019
As of 1:45 PM, isolated heavy showers have developed across Northwestern Trinidad due to a combination of local climatic features, favorable upper-level divergence, and favorable low-level convergence, in addition to increased moisture available. Elsewhere, isolated light to moderate showers are developing across both islands, interrupting mostly sunny to partly cloudy skies.
Particularly across Northwestern Trinidad, street flooding possible during locally heavy rainfall.
9:45 AM Friday 12th July 2019
Much of the heavier showers and thunderstorms associated with Tropical Wave 19 have remained north and east of Trinidad and Tobago. Overnight through this morning, isolated to scattered showers have occurred across Trinidad, with more widespread showers across Tobago.
Over the next few hours, skies are forecast to clear as the leading edge of showers moves west to west-northwestward. However, that clearing would allow the surface to heat. With already favorable low-level convergence and upper-level divergence in place, isolated heavy showers and thunderstorms are possible, favoring Trinidad.
Later this evening, the area further east, with showers and possible thunderstorms moving northward, is forecast to move across T&T. Southern facing slopes of the Southern, Central and Northern Ranges, in addition to the south coast of Tobago, may aid low-level convergence and enhance shower activity.
2:30 AM Friday 12th July 2019
Scattered to widespread showers and isolated thunderstorms are approaching the Southern Windwards. Showers directly to the east of Trinidad and Tobago are showing signs of weakening as they progress westward (warming cloud tops in the below IR image). Heavier activity remains northeast of T&T.
2:15 AM Friday 12th July 2019
Scattered to widespread showers with isolated heavy pockets and thunderstorms forecast to spread across Trinidad and Tobago by 3:30 AM, lingering through the morning. The axis of Tropical Wave 19 remains east of Trinidad and Tobago at this time.
9:00 PM Thursday 11th July 2019
Tropical Wave 19 forecast to begin affecting Trinidad, Tobago and the Southern Windwards after midnight, beginning on Friday.