Hazardous seas and large battering waves affect Store Bay, Tobago.
Hazardous Seas, resulting from long-period swells, which originated from strong Mid-Atlantic low-pressure systems are affecting nearly all of the Eastern Caribbean Islands, to as far south as the northeastern coasts of South America.
We’ve received reports and videos from Store Bay, Tobago as well as Macqueripe Bay, Maracas Bay, Tyrico Bay, Las Cuevas Bay and Cedros in Trinidad of large, battering waves in nearshore areas.
6:00 PM Update: Coastal flooding is ongoing across Cedros due to a combination of long-period swells and spring tides.
A Hazardous Seas alert, Yellow level is in effect.
Sea Conditions For The Next 7 Days
The Takeaway: Based on the latest model guidance and analysis, long period swells are forecast through next week, beginning on Sunday and lasting through next Saturday. Spring Tides are forecast to subside by Thursday. A Hazardous Seas Alert is now in effect until 2:00 PM Saturday.
During high tide periods, as noted below, coastal flooding is likely along Mosqutio Creek and other low-lying coastal areas. Peak swells are forecast on Sunday night through Tuesday night, and again on Thursday night into Saturday.
Peak Spring Tides occurs from Saturday 26th October to Thursday 31st October.
Approximate high tides for Trinidad and Tobago are seen below. Mosquito Creek can expect coastal flooding during these times, particularly 30 minutes prior and 30 minutes after when peak high tides occur. Similar conditions are forecast elsewhere during these high tide periods in low-lying coastal areas throughout the week.
On days where localized, afternoon, thunderstorms and heavy showers occur, mainly across Western Coastal Trinidad, onshore winds resulting from this activity may exacerbate coastal flooding.
The general sea state throughout the week is as follows:
PM Sunday 27th Oct. – PM Tuesday 29th Oct.: Moderate to Rough, with waves generally above 1.5 meters to 2.0 meters in open waters, occasionally above to 2.5 meters, particularly across Eastern coastal waters. In sheltered areas, near 1.0 meters but choppy. Long Period Swells ongoing.
AM Wednesday 30th Oct. – PM Thursday 31st Oct.: Slight to Moderate, with waves generally between 1.5 meters to 2.0 meters in open waters, occasionally above 2.0 meters. In sheltered areas, near 1.0 meters but choppy. Long Period Swells ongoing.
PM Thursday 31st Oct. – PM Monday 4th November (beyond the expiration of the Hazardous Seas Alert): Moderate, with waves above 1.5 meters, up to 2.0 meters and occasionally up to 2.5 meters, particularly in Eastern Coastal waters on Saturday into Sunday. In sheltered areas, near 1.0 meters but choppy. Long Period Swells to subside by late Saturday.
Impacts to T&T’s Shorelines
High tides combined with onshore wind and swell actions could result in localized coastal flooding and beach erosion.
Saltwater will likely splash onto low-lying coastal roads such as the South Trunk Road at Mosquito Creek, the Guayaguayare Mayaro Road at the Guayaguayare Sea Wall, and the Manzanilla-Mayaro Road. Bays and beaches may become inundated.
Coral reefs may experience increased stress and damages, in addition to localized beach erosion, particularly in areas where battering waves focus.
There is also the potential for loss of life. There is a high risk of rip currents, strong currents that can carry even the strongest swimmers out to sea.
Large, battering waves affect Store Bay, Tobago as long-period swells affect the region.
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.