The University of the West Indies Seismic Research Center is reporting high levels of seismic activity at the Kick 'em Jenny underwater volcano in the last few days.
Grenada's National Disaster Management Agency said in a statement that, since the episode began on the afternoon of September 30, several events have taken place.
The largest of those occurred on Monday at magnitudes of 3.3 and 3.5.
Grenada's National Disaster Management Agency has informed marine interests and the general public that the threat level at the volcano, located about five miles north of Grenada, remains at yellow, so the exclusion zone of 1.5 kilometres must continue to be observed.
The yellow alert means the volcano is restless and seismic activity is above the historical level or other unusual activity has been observed, or can be expected without warning.