Hazardous Seas Alert Discontinued But Moderate To Occasionally Rough Seas By Mid-Week.

The Hazardous Seas Alert

The Trinidad and Tobago Meteorological Service has discontinued the Hazardous Seas Alert for coastlines of Trinidad and Tobago.

Note that wind-driven waves will produce moderate to at times rough seas later next week due to a surge of low-level winds, with a possible low-pressure system.

Trinidad and Tobago is NOT under any tropical storm threat, watch or warning.

Based on the latest model guidance and analysis of buoys across the area, long-period swells have subsided across Trinidad and Tobago with seas returning to “normalcy”

Information from the Trinidad and Tobago Meteorological Service concerning the Hazardous Seas Alert Discontinuation on November 4th, 2019

“Sea conditions are returning to a state of normalcy as the long period swell event has decreased. However, caution should still be exercised as some seas along coastal areas may remain somewhat choppy and will be moderate in open waters.” according to the Trinidad and Tobago Meteorological Service.

The color of the alert indicates the severity of the event and the probability of the event occurring. Currently, the alert level is at Green for hazardous seas.

Image Credit: Trinidad and Tobago Meteorological Service

Sea Conditions For The Next 5 Days

The Takeaway: Based on the latest model guidance and analysis, long period swells have subsided.

However, strong low-level winds are forecast to keep moderate seas in open waters throughout the week, becoming rough at times between late Tuesday and early Thursday.

Moderate to rough seas will mainly affect Eastern Coastal waters of Trinidad and Tobago.

A surge in low-level winds is forecast to begin moving across Trinidad, Tobago and the Southern Windwards today (Monday), peaking late Tuesday into early Thursday this week. Offshore winds may peak between 45-55 KM/H and higher gusts in showers and thunderstorms.

This increase in winds will agitate seas, particularly across Eastern Coastal waters of Trinidad and Tobago.

The general sea state throughout the week is as follows:

PM Monday 4th November – PM Tuesday 5th November: Moderate, with waves above 1.5 meters, up to 2.0 meters and occasionally up to 2.5 meters, particularly in Eastern Coastal waters. Long Period Swells are minimal.

PM Tuesday 5th November – PM Thursday 7th November: Moderate to occasionally Rough. A surge in easterly trade winds is forecast to whip up wind-driven waves with waves between 2 meters to 2.5 meters in open waters, with Eastern coastlines particularly affected. Occasionally, wind-driven waves may reach 3.0 meters in open waters. With possible swells during this period, the overall sea state may top 3.0 meters at times. Mariners and beachgoers during this period, particularly along Atlantic facing coasts should exercise extreme caution and avoid heading out to seas.

PM Thursday 7th November – PM Friday 8th November: Slight to Moderate, seas will gradually become more settled as strong, low-level winds subside

Impacts to T&T’s Shorelines

Note that NO hazardous seas alert is in effect for T&T as the swell event has ended. Moderate to occasionally rough seas is due to locally wind-driven waves. Moderate to occasionally rough seas will mainly affect eastern coastlines of Trinidad and Tobago. Localized coastal flooding and beach erosion possible.

There is also the potential for loss of life as there is an elevated risk of rip currents, strong currents that can carry even the strongest swimmers out to sea.

Rip currents are powerful channels of water flowing quickly away from the shore, which occur most often at low spots or breaks in the sandbar and near structures such as groins, jetties, and piers. If caught in a rip current, relax and float. Don’t swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

There is also the potential for injuries to beachgoers; beach closures; localized disruptions to marine recreation and businesses and financial losses.

High surfs can knock spectators off exposed rocks and jetties. Breaking waves may occasionally impact harbours making navigating the harbour channel dangerous. This may be exacerbated during the afternoon, localized thunderstorms and heavy showers across Western coastal Trinidad.

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