This marad advisory provides guidance to vessels transiting to or from ports in japan or in waters in the…
North Pacific Ocean · HYDROPAC 850/11
What this record establishes
Archived notice · 2011-05-09 00:00Z
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) · MARAD ADVISORY 2/11 181545Z MAR 11.. Issued 2011-03-18 16:18Z. 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
- North Pacific Ocean. The parsed report position is 37.317, 141.017. 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
These reports were linked by category and sea, with positions within 30 nautical miles and issue dates within 30 days of another report's recorded in-force span. Links can extend through other members, so the full group can cover a larger area or period. Proximity does not confirm that they describe one incident.
- USGS-USP000HUJS2011-02-15 · Cancelled notice
- USGS-USP000HVHJ2011-03-09 · Cancelled notice
- USGS-USP000HVHM2011-03-09 · Cancelled notice
- USGS-USP000HVHN2011-03-09 · Cancelled notice
- USGS-USP000HVJ22011-03-09 · Cancelled notice
- USGS-USP000HVK62011-03-09 · Cancelled notice
Current notices and reporting history in the North Pacific Ocean →
- issued
- 2011-03-18 16:18Z
- status
- Archived notice
- authority
- MARAD ADVISORY 2/11 181545Z MAR 11.
- issued by
- MARAD ADVISORY
- sea
- North Pacific Ocean
- position
- 37.317, 141.017
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
JAPAN-NORTHEAST COAST. 1. THIS MARAD ADVISORY PROVIDES GUIDANCE TO VESSELS TRANSITING TO OR FROM PORTS IN JAPAN OR IN WATERS IN THE VICINITY OF THE NORTHEAST COAST OF THE ISLAND OF HONSHU. 2. U.S. FLAG OPERATORS WITH SHIPS IN THE AFFECTED AREAS ARE REQUESTED TO FORWARD THIS ADVISORY TO THEIR SHIPS BY THE MOST EXPEDITIOUS MEANS. 3. A 8.9/9.0 MAGNITUDE EARTHQUAKE STRUCK THE PACIFIC OCEAN NEAR NORTHEASTERN JAPAN AT AROUND 1446 ON MARCH 11 (JST) CAUSING DAMAGE WITH BLACKOUTS, FIRE AND A TSUNAMI. NUCLEAR POWER PLANTS NEAR FUKUSHIMA WERE DAMAGED AND RADIATION RELEASE WAS DETECTED AND IS BEING MONITORED BY JAPAN. 4. IN RESPONSE TO THE SITUATION AT THE FUKUSHIMA NUCLEAR POWER PLANT, THE UNITED STATES NUCLEAR REGULATORY COMMISSION (NRC), THE DEPARTMENT OF ENERGY AND OTHER TECHNICAL EXPERTS IN THE U.S. GOVERNMENT HAVE REVIEWED SCIENTIFIC AND TECHNICAL INFORMATION COLLECTED FROM ASSETS IN JAPAN, AS WELL AS WHAT THE GOVERNMENT OF JAPAN HAS DISSEMINATED. CONSISTENT WITH THE RESULTS OF THAT REVIEW, NRC GUIDELINES AND GUIDANCE ISSUED BY THE U.S. AMBASSADOR TO JAPAN, THE U.S. COAST GUARD RECOMMENDS, AS A PRECAUTION, THAT VESSELS AVOID TRANSITING WITHIN 50 MILES (80 KILOMETERS) OF THE FUKUSHIMA NUCLEAR POWER PLANT AT 37-19N 141-01E. MARINERS ARE ADVISED THAT THIS RECOMMENDATION SHOULD BE CONSIDERED A MINIMUM DISTANCE FROM THE FUKUSHIMA NUCLEAR POWER PLANT SHOULD BE AVOIDED. PRUDENT TRACKLINE PLANNING SHOULD INCORPORATE CURRENT WIND AND WEATHER CONDITIONS. 5. MARINERS ARE ADVISED TO MONITOR AND COMPLY WITH NAVTEX AND NAVAREA XI WARNINGS. MARINERS SHOULD KEEP ABREAST OF INFORMATION BEING PROVIDED BY THE GOVERNMENT OF JAPAN RELATING TO ANY FURTHER POTENTIAL IMPACTS. THE MARTIME ADMINISTRATION AND THE U.S. COAST GUARD WILL PROVIDE UPDATED NOTICES AS ADDITIONAL GUIDANCE BECOMES AVAILABLE. 6. IN THE EVENT A VESSEL BOUND FOR A U.S. PORT TRANSITS WITHIN THE 50-MILE (80-KILOMETER), PRECAUTIONARY AREA, THE U.S. COAST GUARD RECOMMENDS THE VESSEL'S MASTER TO SUBMIT TRANSIT INFORMATION, INCLUDING THE DATE AND TOTAL TIME WITHIN THE PRECAUTIONARY AREA, TO THE COGNIZANT U.S. COAST GUARD CAPTAIN OF THE PORT USING THE COMMENT BLOCK ON THE 96 HR ADVANCED NOTICE OF ARRIVAL. 7. THIS ADVISORY WILL BE PUBLISHED ON THE MARAD WEB SITE AT WWW.MARAD.DOT.GOV UNDER THE NEWSROOM TAB. 8. FOR FURTHER INFORMATION REGARDING THIS ADVISORY, CONTACT CAPTAIN ROBERT FORD, MARITIME ADMINISTRATION, OFFICE OF SECURITY, CODE: MAR-420, ROOM W25-308, 1200 NEW JERSEY AVE, S.E., WASHINGTON, DC 20590, PHONE: 202 366 0223, FAX: 202 366 3954, TELEX: 710 822 9426 (MARAD DOT WSH) OR E-MAIL: MARADSECURITY@DOT.GOV.
Reading this warning
- 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.
- Track line joining
- Introduces a route through a series of positions — a cable route, a tow's track or a survey line.
- NAVTEX
- An automated medium-frequency radio service that sends coastal warnings as text to a small printer or screen on board.
- NAVAREA
- One of the 21 ocean areas of the World-Wide Navigational Warning Service, each with a coordinator that broadcasts long-range warnings.
Collected reports in this area · earthquake & tsunami bulletins
479 within 180 nm since 1997 · 16 in the last 12 months · 0 listed in force now
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.
- 206 km ese of ōfunato, japan2026-08-26
- 5 km e of ushiku, japan2026-08-22
- 2 km ese of yōkaichiba, japan2026-06-26
- 41 km ese of ōfunato, japan2026-05-15
- 100 km e of miyako, japan2026-04-20
- 123 km e of yamada, japan2026-03-26
Month of issue in the collected archive
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 2026-10-03 02:31Z; 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.