Media Release - St. George's Grenada

1

REL: 2025-11-20

Increased Seismic Activity at Kick-‘em-Jenny Submarine Volcano

August 28, 2025 2:30 pm

Show Details

St. George’s, Grenada – Thursday 28th August 2025. 2:30 p.m.: The University of the West Indies, Seismic Research Center (UWI SRC) has advised the National Disaster Management Agency (NaDMA) of increased seismic activity at the Kick-‘em-Jenny (KeJ) Submarine Volcano. The unrest event began at 10:00 (local time) on the night of Wednesday 27th August 2025. Approximately 800 tremors were detected during the period 10:00 p.m., on August 27, to 8:00 a.m., on August 28. The largest events measured so far are in the range of Magnitude 2.2–2.4. There have been no reports of these tremors being felt in Grenada. While activity is continuing, its intensity has decreased compared to the start of the unrest. The UWI SRC will continue to monitor the Submarine Volcano and provide updated analyses of the situation. Based on the information from UWI SRC, the alert level for Kick-‘em-Jenny remains at YELLOW. This means that all marine interests should maintain the exclusion zone of 1.5 km. The last period of unrest at KeJ occurred between 10th to 14th February 2024, during which over 3,400 events were recorded. The maximum magnitude then was 3.3, and no T-phases (explosion signals) were observed. The National Disaster Management Agency (NaDMA) will continue to monitor the situation and provide updates to the public.

Download (PDF)
3

August 30, 2025 2:00 pm

Latest
Significant decline in seismic activity at the Kick ‘em-Jenny Submarine Volcano

The University of the West Indies Seismic Research Centre (UWI SRC) has advised the National Disaster Management Agency (NaDMA) of elevated seismic activity at the Kick ‘em-Jenny (KeJ) Submarine Volcano. The unrest began on Wednesday, August 27, 2025.

According to UWI SRC, between 12:00 noon on Thursday, 28 August and 08:30 a.m. on Friday, 29 August, the network recorded approximately 72 events. This corresponds to an average of 3-4 tremors every hour, which continues to reflect a lower level of activity compared to the beginning of the episode. The tremors have measured in the magnitude range M1.4-1.8.

As a result of this recent activity, the alert level remains at YELLOW (volcano is restless; activity may be increasing).

NaDMA continues to monitor the situation closely and will provide timely updates to the public through official channels. Residents are urged to follow all guidance issued by the relevant authorities.

Media Release File
2

August 29, 2025 2:30 pm

Elevated seismic activity at the Kick ‘em-Jenny Submarine Volcano

On Thursday, August 28th, the University of the West Indies Seismic Research Centre (UWI SRC) advised the National Disaster Management Agency (NaDMA) of elevated seismic activity at the Kick‘em-Jenny (KeJ) Submarine Volcano. The unrest began on Wednesday, August 27, 2025.

The UWI SRC advised of significantly lower levels of activity at the Kick ‘em-Jenny (KeJ) Submarine Volcano on Friday, August 29th, 2025. As of noon on Saturday, August 30th, 2025, the UWI SRC advised the National Disaster Management Agency that the level of activity at the volcano decreased further to an average of one or two tremors per hour.

Despite the reduced activity the alert level remains at YELLOW (volcano is restless; activity may be increasing).

NaDMA will monitor the situation closely and provide timely updates to the public. Residents are reminded to pay attention to official sources of information, and to follow all guidance provided by the relevant authorities.

Media Release File