Quakes

Earthquake with magnitude of 7.0 occurred in 22-42S 170-12E at 302057Z mar

Coral Sea · HYDROPAC 847/22

What this record establishes

Archived notice · 2022-03-31 11:41Z

This notice comes from the historical archive. Its archived status does not establish when or how the reported situation ended.

Source and dates
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · PTWC 302225Z MAR 22.. Issued 2022-03-30 22:28Z. First collected 2026-08-17 13:38Z; last seen in collection 2026-08-17 15:46Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Coral Sea. The parsed report position is -21.775, 168.025. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Coral Sea →

issued
2022-03-30 22:28Z
status
Archived notice
authority
PTWC 302225Z MAR 22.
issued by
PTWC
sea
Coral Sea
position
-21.775, 168.025
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

CORAL SEA.
NEW CALEDONIA.
DNC 06.
1. EARTHQUAKE WITH MAGNITUDE OF 7.0 OCCURRED
   IN 22-42S 170-12E AT 302057Z MAR.
   SMALL TSUNAMI WAVES HAVE BEEN OBSERVED.
2. TSUNAMI ACTIVITY IS FORECASTED TO START AT
   THE FOLLOWING TIMES:
   A. OUINNE NEW CALEDONI 22-00S 166-42E AT 2203Z.
   B. MARE NEW CALEDONIA 21-30S 167-54E AT 2208Z.
   C. LIFOU NEW CALEDONIA 20-54S 167-18E AT 2159Z.
3. TSUNAMI WAVES REACHING 0.07 METERS ABOVE
   THE TIDE LEVEL ARE POSSIBLE AND MAY BE
   A SERIES OF WAVES WHICH COULD BE DANGEROUS
   FOR SEVERAL HOURS AFTER THE INITIAL WAVE ARRIVAL.

Reading this warning

DNC (Digital Nautical Chart)
A reference to one of the regions of NGA's Digital Nautical Chart, used to tell the reader which charts a warning affects.
Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
Date-time group (DTG)
A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.

All warning terms →

Collected reports in this area · earthquake & tsunami bulletins

299 within 180 nm since 1997 · 6 in the last 12 months · 0 listed in force now

97
00
05
10
15
20
25
26

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

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

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

3 earthquake & tsunami bulletins listed in force · see all

Record snapshot 2026-10-02 20:38Z; source collection times vary.

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.