Nav aids

GPS unreliable 20 apr in area within 222 miles of 32-49-59N 118-23-00W

North Pacific Ocean · NAVAREA XII 166/21

What this record establishes

Archived notice · 2021-04-21 00:01Z

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) · COGARD COMMUNICATIONS COMMAND 161657Z APR 21.. Issued 2021-04-16 17:25Z. 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 32.833, -118.383 with a 222.0 nm radius. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Current notices and reporting history in the North Pacific Ocean →

issued: 2021-04-16 17:25Z
status: Archived notice
authority: COGARD COMMUNICATIONS COMMAND 161657Z APR 21.
NAVAREA: NAVAREA XII
issued by: COGARD COMMUNICATIONS COMMAND
sea: North Pacific Ocean
position: 32.833, -118.383 · r 222.0 nm
source: NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

EASTERN NORTH PACIFIC.
CALIFORNIA.
1. GPS UNRELIABLE 20 APR
   IN AREA WITHIN 222 MILES OF 32-49-59N 118-23-00W.
2. CANCEL THIS MSG 21 APR 21.

Reading this warning

GNSS / GPS: Satellite positioning — GPS and other systems — and the testing, jamming and interference that make it unreliable in an area.
Inoperative / unreliable / off air: An aid or radio service is not working as charted or published.
Within a radius of: A circular area — every position within a stated distance of a point.
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.
CANCEL THIS MSG: The warning's own expiry: a line telling the reader when the message cancels itself.

All warning terms →

Collected reports in this area · aids-to-navigation notices

137 within 180 nm since 1998 · 1 in the last 12 months · 1 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.

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

Hazardous operations 010800Z sep to 010800Z oct in area bound by 32-55.00N 118-25.00W, 32-55.00N 118-15.00W,…Exercises · 3.4 nm
Hazardous operations 301300Z to 302300Z sep in area within one mile of 32-52.80N 118-17.70WExercises · 5.3 nm
Hazardous operations 010800Z sep to 010800Z oct in area bound by 32-52.70N 119-11.96W, 33-08.06N 118-52.09W,…Exercises · 24.3 nm
Hazardous operations 010800Z sep to 010800Z oct in area bound by 32-33.00N 118-25.00W, 32-35.00N 118-16.00W,…Exercises · 39.2 nm
PQ63+HX los angeles, ca, USASpills · 53.2 nm
Coronado island south light 32-23.5N 117-14.5W unlitNav aids · 63.5 nm
Hazardous operations 292000Z to 300230Z sep in area bound by 33-32.00N 120-21.00W, 32-45.00N 120-53.00W,…Exercises · 93 nm
Hazardous operations, rocket launching: a. 301600Z to 302025Z sep, alternate 1600Z to 2025Z daily 01 thru 06…Missiles · 100.7 nm

Worldwide in the collected sources

137 aids-to-navigation notices listed in force · see all

Record snapshot 2026-10-01 14:53Z; source collection times vary.

Nav aids

Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →

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.