Quakes

50 km ssw of ‘ohonua, tonga

USGS-USP000GZBV

issued: 2009-07-17 03:20Z
status: cancelled 2009-07-20 03:20Z
self-cancels: 2009-07-20 03:20Z
authority: USGS NEIC
sea: South Pacific Ocean
position: -21.773, -175.075
source: usgs · first seen 2026-09-03 15:13Z

Original warning text

50 KM SSW OF ‘OHONUA, TONGA.
1. EARTHQUAKE MAGNITUDE 5.7 (MWC) IN 21.773S 175.075W, DEPTH 19 KM AT 170320Z JUL 09.
2. USGS EVENT USP000GZBV. https://earthquake.usgs.gov/earthquakes/eventpage/usp000gzbv

This area · earthquake & tsunami bulletins

341 within 180 nm since 1997 · 3 in the last 12 months · 0 in force now

288 km ssw of houma, tonga2026-05-12
99 km ene of ‘ohonua, tonga2026-01-31
53 km ssw of ‘ohonua, tonga2026-01-26
Earthquake magnitude 5.5 (mww) in 24.674S 175.888W, depth 10 km at 230010Z aug 252025-08-23
Earthquake magnitude 5.6 (mww) in 24.373S 175.969W, depth 12 km at 182303Z aug 252025-08-18
77 km ne of ‘ohonua, tonga2025-07-06

Season · when earthquake & tsunami bulletins happen here

month of issue, all years in the archive

Timeline · 2 messages since 2009-07-17 · closed 2009-08-16

50 km ssw of ‘ohonua, tonga this message2009-07-17 → 2009-07-20
53 km se of ‘ohonua, tonga2009-08-13 → 2009-08-16

joined by proximity

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.