NAVAREA XII
Coordinated by United States (National Geospatial-Intelligence Agency (NGA)); covers the eastern North Pacific: North America's west coast, Hawaii and the central Pacific.
NAVAREA XII is the second area the United States coordinates, covering the Pacific coast of North America, Alaska's southern waters, Hawaii and a wide stretch of the central Pacific. Missile and rocket ranges off California and Hawaii, scientific moorings and U.S. Coast Guard search-and-rescue broadcasts are characteristic of it.
Like NAVAREA IV, it is well covered: NGA's full archive to 2024 and live collection since August 2026.
- own list read
- NGA navigational warnings, NGA warning broadcasts
- attributed by
- own series 11,916 · named in an NGA relay 5
What the archive shows
11,921 warnings in this archive are attributed to NAVAREA XII, issued from 1993-07-02 to 2026-09-23. 22 of them are in force in the latest lists we collected.
11,916 come from the area's own series and 5 are NGA relays that name NAVAREA XII as their source.
Other accounts for 3,317 of 11,921 recorded messages (28%), the largest warning type group in this selection.
The stations and services named as originators most often are SEA RANGE OTC (1,025), COGARD NAVCEN DGPS (982), COGARD COMMUNICATIONS COMMAND (795) and THE OCEAN CLEANUP SYSTEM (730), among 747 in all.
The largest yearly count is 2022, with 937 warnings. Collection is incomplete between 2024-05 and 2026-08-17, so those years are not comparable.
They reached this archive through NAVAREA XII (11,916) and HYDROPAC (5).
Attributed warnings by year of issue
By month of issue, all years
Warning types
Originating stations and services · 747
The authority recorded with each message: the range, rescue centre, coast radio station or national service that issued it.
- SEA RANGE OTC1,025
- COGARD NAVCEN DGPS982
- COGARD COMMUNICATIONS COMMAND795
- THE OCEAN CLEANUP SYSTEM730
- MEXICO XII599
- FACSFAC SAN DIEGO430
- COGARD NAVCEN GPS359
- COGARD NAVCEN330
- WESTERN RANGE289
- PVWA274
- PACMISRANFAC228
- PVMM195
Where they lie · 31 sea areas
Newest in force · 22
- NAVAREA XII 642/26 · Cable ops · Bering Sea2026-09-18Cable operations 180800Z sep to 02 oct by cableship it integrity along trackline joining 62-52.90N…
- NAVAREA XII 639/26 · Surveys · Bering Sea2026-09-17Scientific moorings, at depth 15 meters, established in: a. 65-46.86N 168-34.06W
- NAVAREA XII 586/26 · Exercises · North Pacific Ocean2026-08-21Hazardous operations 010800Z sep to 010800Z oct in area bound by 32-52.70N 119-11.96W, 33-08.06N 118-52.09W,…
- NAVAREA XII 584/26 · Exercises · North Pacific Ocean2026-08-21Hazardous operations 010800Z sep to 010800Z oct in area bound by 32-55.00N 118-25.00W, 32-55.00N 118-15.00W,…
- NAVAREA XII 585/26 · Exercises · North Pacific Ocean2026-08-21Hazardous operations 010800Z sep to 010800Z oct in area bound by 32-33.00N 118-25.00W, 32-35.00N 118-16.00W,…
- NAVAREA XII 486/26 · Other · North Atlantic Ocean2026-07-16Uscg remote communication facility honolulu 21-22.00N 158-09.00W transmit services unreliable
In force the longest
- NAVAREA XII 243/22 · Nav aids · North Pacific Ocean2022-04-15 · MEXICO XIICoronado island south light 32-23.5N 117-14.5W unlit
- NAVAREA XII 244/22 · Nav aids · Gulf of California2022-04-15 · MEXICO XIIBoca del tule light 23-14.3N 109-26.4W unlit
- NAVAREA XII 720/22 · Nav aids · North Pacific Ocean2022-09-27 · EL SALVADORPuerto de la union 16 buoy 13-20.36N 087-48.99W unlit
Most recently issued
- NAVAREA XII 657/26 · Missiles2026-09-23Hazardous operations, space debris 1427Z to 1833Z daily 28 sep thru 04 oct in area bound by 23-55.00N…
- NAVAREA XII 654/26 · Nav aids · Gulf of Alaska2026-09-22Uscg remote communication facility kodiak 57-46.00N 152-34.00W hf and mf transmit capabilities unreliable…
- NAVAREA XII 652/26 · Exercises · North Pacific Ocean2026-09-21Hazardous operations 261500Z to 270100Z sep in area bound by 34-01.00N 121-02.00W, 33-21.00N 119-28.00W,…
- NAVAREA XII 653/26 · Exercises · North Pacific Ocean2026-09-21Hazardous operations 271300Z to 272300Z sep in area within one mile of 32-52.80N 118-17.70W
- NAVAREA XII 656/26 · Exercises · North Pacific Ocean2026-09-21Hazardous operations 281300Z to 282300Z sep in area within one mile of 32-52.80N 118-17.70W
- NAVAREA XII 651/26 · Exercises · North Pacific Ocean2026-09-21Hazardous operations 251300Z to 252300Z sep in area within one mile of 32-52.80N 118-17.70W
- NAVAREA XII 650/26 · Exercises · North Pacific Ocean2026-09-21Hazardous operations 261300Z to 262300Z sep in area within one mile of 32-52.80N 118-17.70W
- NAVAREA XII 649/26 · Exercises · North Pacific Ocean2026-09-21Hazardous operations 241300Z to 242300Z sep in area within one mile of 32-52.80N 118-17.70W
Neighbouring areas
- NAVAREA XI — the north-west Pacific and East Asian seas, from Japan to the South China Sea
- NAVAREA XIII — the north-west Pacific off the Russian Far East
Counts are warnings attributed to NAVAREA XII by their series or by the source an NGA relay names, recounted 2026-09-24; the area's full traffic is larger. Not for navigation — follow official NAVAREA broadcasts.