Quakes
Earthquake magnitude 5.8 (mwc) in 31.193S 013.338W, depth 4 km at 202105Z dec 08
Southern Mid-atlantic Ridge · USGS-USP000GR1Z
- issued
- 2008-12-20 21:05Z
- status
- cancelled 2008-12-23 21:05Z
- self-cancels
- 2008-12-23 21:05Z
- authority
- USGS NEIC
- sea
- South Atlantic Ocean
- position
- -31.193, -13.338
- source
- usgs · first seen 2026-09-03 15:08Z
Original warning text
SOUTHERN MID-ATLANTIC RIDGE. 1. EARTHQUAKE MAGNITUDE 5.8 (MWC) IN 31.193S 013.338W, DEPTH 4 KM AT 202105Z DEC 08. 2. USGS EVENT USP000GR1Z. https://earthquake.usgs.gov/earthquakes/eventpage/usp000gr1z
This area · earthquake & tsunami bulletins
10 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now
99
00
05
10
15
20
25
- Earthquake magnitude 5.6 (mww) in 32.483S 014.272W, depth 10 km at 161241Z apr 252025-04-16
- Earthquake magnitude 5.9 (mww) in 31.190S 013.319W, depth 10 km at 140951Z jun 242024-06-14
- Earthquake magnitude 5.9 (mww) in 30.940S 013.472W, depth 10 km at 140426Z jun 242024-06-14
- Earthquake magnitude 5.7 (mww) in 28.983S 013.229W, depth 4 km at 101956Z may 132013-05-10
- Earthquake magnitude 5.8 (mww) in 33.096S 015.977W, depth 5 km at 221331Z mar 112011-03-22
- Earthquake magnitude 5.8 (mwc) in 29.031S 013.096W, depth 10 km at 201719Z jul 102010-07-20
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.