Official weather service for Grenada, Carriacou and Petite Martinique For pilots For mariners Get alerts

Tsunami information

Threat levels, how a warning reaches you, and what to do.

In effect now

No tsunami message is in effect for Grenada, Carriacou or Petite Martinique.

Threat levels

Level	Meaning	Action
Information statement	An earthquake has occurred; no tsunami threat expected	None — stay informed
Watch	A distant event may produce a tsunami; threat not yet confirmed	Prepare to move; monitor updates
Advisory	Strong currents or waves dangerous in and near the water	Stay out of the water and off beaches
Warning	Dangerous inundation is expected or occurring	Move inland and to high ground immediately

The natural warning comes first

Grenada sits in a seismically active part of the Eastern Caribbean, close to the Lesser Antilles subduction zone and to the submarine volcano Kick 'em Jenny, a few kilometres north of the island.

For a nearby source there may be no time for an official warning to reach you. The natural signs are the warning: strong ground shaking near the coast, a sudden rise or an unusual withdrawal of the sea, or a loud roar from offshore.

If you observe any of these, move immediately. Do not wait for an official message, and do not go to the shore to look.

What to do

Move inland and to high ground on foot if you can — roads jam quickly.
Aim for at least 30 metres above sea level, or 1.6 km inland, whichever you reach first.
Stay there until the official all-clear. Later waves are often larger than the first.
If you are on a boat in deep water, stay offshore — do not return to harbour.

Who issues what

Tsunami messages for the Caribbean originate from the Pacific Tsunami Warning Center, which acts as the tsunami service provider for the region. The Grenada Meteorological Service and the National Disaster Management Agency relay and act on those messages nationally.

Grenada participates in CARIBE WAVE, the annual regional tsunami exercise. During an exercise, every message is clearly marked as such.