Urgent – Immediate Broadcast Requested

Tsunami Bulletin Number 1

Antigua and Barbuda Meteorological Service

Antigua and Barbuda Tsunami Warning Focal Point and Tsunami Warning Centre

8:45 am AST Saturday 21 March 2026

…Tsunami Information Statement…

This is a Tsunami Information Statement to inform the public and authorities that, based on current data, there is no tsunami threat to Antigua and Barbuda following the recent seismic activity.

Preliminary Earthquake Parameters:

• Magnitude: 6.9

• Origin Time and Date: 8:17 AST (1217 UTC) March 21, 2026

• Coordinates: 23.8° North, 45.8° West, about 1818 km/1130 miles northeast of Antigua

• Depth: 1 km/0.6 miles

• Location: Northern Mid-Atlantic Ridge

Evaluation:

An earthquake with a preliminary magnitude of 6.9 occurred at the Northern Mid-Atlantic Ridge at 8:31 am on Saturday, March 21, 2026

Based on all available data, there is no significant tsunami threat from this earthquake. However, there is a very small possibility of tsunami waves along the Atlantic coasts located nearest the epicentre.

Recommended Actions:

• No action required.

• Stay Updated – We advise the public to stay informed by following updates from the Antigua and Barbuda Meteorological Service and other official channels.

• Preparedness Reminder – While there is no immediate risk, this is a good time to review your tsunami evacuation plans and ensure familiarity with designated safe areas, especially if you are in coastal zones.

Next Update and Additional Information:

This will be the only statement issued for this event unless additional data are received or the situation changes.

Stay tuned to updates from the Met Service through antiguamet.com and Twitter, Facebook, YouTube and Instagram @abmetservice. Also, stay tuned to ABS Radio and TV and other media platforms for updates.