Quakes

Earthquake magnitude 5.5 (mww) in 18.546S 012.696W, depth 10 km at 180528Z sep 17

Southern Mid-atlantic Ridge · USGS-US2000APRU

issued
2017-09-18 05:28Z
status
cancelled 2017-09-21 05:28Z
self-cancels
2017-09-21 05:28Z
authority
USGS NEIC
sea
South Atlantic Ocean
position
-18.546, -12.696
source
usgs · first seen 2026-09-03 15:13Z

Original warning text

SOUTHERN MID-ATLANTIC RIDGE.
1. EARTHQUAKE MAGNITUDE 5.5 (MWW) IN 18.546S 012.696W, DEPTH 10 KM AT 180528Z SEP 17.
2. USGS EVENT US2000APRU. https://earthquake.usgs.gov/earthquakes/eventpage/us2000apru

This area · earthquake & tsunami bulletins

8 within 180 nm since 2002 · 1 in the last 12 months · 0 in force now

02
05
10
15
20
25
26

Season · when earthquake & tsunami bulletins happen here

J
F
M
A
M
J
J
A
S
O
N
D

month of issue, all years in the archive

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

5 earthquake & tsunami bulletins in force · see all

Quakes

Undersea earthquakes of magnitude 5.5 and above (USGS) and the tsunami bulletins NAVAREA coordinators relay. All current earthquake & tsunami bulletins

Not for navigation. This is a re-rendering of an official navigational warning for awareness; mariners must use official NAVAREA broadcasts and their national MSI service.