Exercises

Hazardous operations off California within one mile of 32-52.80N 118-17.70W run 1300 to 2300 UTC on 1 October.

North Pacific Ocean · NAVAREA XII 670/26

What this record establishes

Cancelled notice · 2026-09-28 16:45Z

This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.

Source and dates
NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-09-21 21:11Z. First collected 2026-09-28 19:17Z; last seen in collection 2026-09-29 03:17Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
North Pacific Ocean. The parsed report position is 32.880, -118.295 with a 1.0 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 →

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2026-10-01 13:00Z2026-10-01 23:00Z—10 h

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

issued
2026-09-21 21:11Z
status
Cancelled notice
self-cancels
2026-10-02 00:01Z
NAVAREA
NAVAREA XII
sea
North Pacific Ocean
position
32.880, -118.295 · r 1.0 nm
source
NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-09-28 19:17Z

Original warning text

NORTH PACIFIC.
CALIFORNIA.
1. HAZARDOUS OPERATIONS 011300Z TO 012300Z OCT
   IN AREA WITHIN ONE MILE OF 32-52.80N 118-17.70W.
2. CANCEL THIS MSG 020001Z OCT 26.

Reading this warning

Hazardous operations
NGA's heading for activities that make an area dangerous — most often rocket launches, space debris and weapons firings, and some open-ended danger areas.
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.
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 · military exercises

1080 within 180 nm since 1999 · 34 in the last 12 months · 6 listed in force now

99
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

Worldwide in the collected sources

31 military exercises listed in force · see all

Record snapshot 2026-09-29 03:18Z; source collection times vary.

Exercises

Gunnery, firing and naval exercise areas. All current military exercises →

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.