Quakes · tsunami
211 km nne of saipan, northern mariana islands
USGS-US1000GJ78
- issued
- 2018-08-28 22:35Z
- status
- cancelled 2018-08-31 22:35Z
- self-cancels
- 2018-08-31 22:35Z
- authority
- USGS NEIC
- sea
- North Pacific Ocean
- position
- 16.804, 146.839
- source
- usgs · first seen 2026-09-03 15:13Z
Original warning text
211 KM NNE OF SAIPAN, NORTHERN MARIANA ISLANDS. 1. EARTHQUAKE MAGNITUDE 6.4 (MWW) IN 16.804N 146.839E, DEPTH 55 KM AT 282235Z AUG 18. 2. A TSUNAMI MESSAGE WAS ISSUED FOR THIS EVENT. FOLLOW THE TSUNAMI WARNING CENTRES. 3. USGS EVENT US1000GJ78. https://earthquake.usgs.gov/earthquakes/eventpage/us1000gj78
This area · earthquake & tsunami bulletins
78 within 180 nm since 1997 · 1 in the last 12 months · 0 in force now
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25
- 90 km sse of san jose village, northern mariana islands2025-12-15
- 266 km ne of saipan, northern mariana islands2024-09-16
- Earthquake magnitude 6.8 (mww) in 19.110N 145.366E, depth 222 km at 051103Z apr 242024-04-05
- 137 km ene of saipan, northern mariana islands2024-04-02
- Earthquake magnitude 6.1 (mww) in 18.519N 145.634E, depth 184 km at 201548Z jan 242024-01-20
- Earthquake magnitude 5.6 (mww) in 18.821N 146.099E, depth 95 km at 101411Z dec 232023-12-10
Season · when earthquake & tsunami bulletins happen here
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month of issue, all years in the archive
Nearby now · within 120 nm
- Hazardous operations 0100Z to 0800Z daily 01 thru 03 sep in area bound by 17-00.00N 145-04.98E, 17-00.00N…Exercises · 61.3 nm
- Hazardous operationsExercises · 61.3 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.