Strong earthquake · July 11, 2026

M 6.4 Earthquake, South Sandwich Islands region

A magnitude 6.4 (mww) earthquake struck South Sandwich Islands region on July 11, 2026 at 10:26 UTC, at a depth of about 26 km (16 mi), according to the USGS. The USGS PAGER alert level is green.

Updated Sep 29, 2026, 6:05 PM EDT (USGS snapshot)

M 6.4 mww PAGER Green Reviewed by a seismologist

This is not an early-warning system. For tsunami warnings see tsunami.gov; for emergencies follow local authorities.

Event details
Magnitude6.4 mww (Strong)
Time (UTC)
U.S. Eastern TimeJul 11, 2026, 6:26 AM EDT
LocationSouth Sandwich Islands region
Coordinates55.535° S, 28.911° W
Depth26.0 km (16.2 mi), shallow
Felt reportsNone reported
ShakeMap intensityMMI 3.9 (estimated maximum)
Tsunami flagNo
PAGER alertGreen
USGS event IDus7000szpb

Source: USGS Earthquake Hazards Program, event us7000szpb. Last updated by the USGS Sep 29, 2026, 22:05:22 UTC.

USGS event page View on OpenStreetMap

What the numbers mean

Tsunami flag
The USGS sets this flag for large events in oceanic regions. It does not mean a tsunami happened or will happen. Official tsunami warnings come from the NOAA Tsunami Warning Centers at tsunami.gov.
PAGER alert
An automatic USGS estimate of likely fatalities and economic losses: green (little or none), yellow, orange, or red (highest). It can change as more data arrives.
Felt reports
People who felt shaking can describe it through the USGS "Did You Feel It?" survey on the event page. The count grows for hours or days after an event.
Local time
The local time at the epicenter is not shown because the area spans more than one time zone or is offshore.

Other recent earthquakes within 300 km

Nearby events from the past 30 days (M 4.5+), past 7 days (M 2.5+), and past year (M 6+)
MagnitudeLocationTimeDepth
M 5.0South Sandwich Islands region
0 sec ago		60.9 km
M 5.1South Sandwich Islands region
0 sec ago		101.5 km
M 4.5South Sandwich Islands region
0 sec ago		110.3 km
M 4.9South Sandwich Islands region
0 sec ago		10.0 km
M 4.9South Sandwich Islands region
15 hr ago		35.0 km
M 4.6South Sandwich Islands region
18 hr ago		33.4 km
M 4.8South Sandwich Islands region
31 hr ago		92.9 km
M 6.2South Sandwich Islands region PAGER green
27 days ago		111.0 km

After an earthquake

Expect aftershocks. If you are near the coast and feel strong or long shaking, move to high ground right away without waiting for an official warning. Check on neighbors and follow instructions from local emergency officials.

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