Hazardous operations 300300Z to 300930Z jul, alternate 310300Z to 310930Z jul and 010300Z to 010930Z aug in…
North Pacific Ocean · NAVAREA XII 317/17
What this record establishes
Archived notice · 2017-07-30 08:51Z
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) · RTS SAFETY KWAJALEIN MH 150456Z JUL 17 - RTS SAFETY KWAJALEIN MH UPDATE 201737Z JUL 17.. Issued 2017-07-25 02:54Z. 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 map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.
Related notices and cancellation links
- Cancel NAVAREA XII 317/17 and this msg, operations completedlater cancellation notice
Current notices and reporting history in the North Pacific Ocean →
Activity windows · 3 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2017-07-30 03:00Z | 2017-07-30 09:30Z | — | 6 h 30 |
| 2017-07-31 03:00Z | 2017-07-31 09:30Z | — | 6 h 30 |
| 2017-08-01 03:00Z | 2017-08-01 09:30Z | — | 6 h 30 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2017-07-25 02:54Z
- status
- Archived notice
- self-cancels
- 2017-08-01 10:30Z
- authority
- RTS SAFETY KWAJALEIN MH 150456Z JUL 17 - RTS SAFETY KWAJALEIN MH UPDATE 201737Z JUL 17.
- NAVAREA
- NAVAREA XII
- issued by
- RTS SAFETY KWAJALEIN MH
- sea
- North Pacific Ocean
- position
- 55.917, -151.471
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
EASTERN NORTH PACIFIC.
GULF OF ALASKA.
ALASKA.
1. HAZARDOUS OPERATIONS 300300Z TO 300930Z JUL,
ALTERNATE 310300Z TO 310930Z JUL AND
010300Z TO 010930Z AUG IN AREAS BOUND BY:
A. 37-18N 164-57W, 36-58N 164-43W,
37-00N 164-11W, 38-22N 164-00W,
38-23N 164-03W.
B. 43-37N 167-08W, 43-25N 166-26W,
45-50N 165-10W, 46-01N 165-44W.
C. 49-41N 158-09W, 49-16N 156-45W,
51-09N 155-24W, 51-30N 156-44W.
D. 54-27N 153-33W, 54-02N 152-19W,
55-18N 149-55W, 56-40N 149-21W,
57-12N 149-48W, 57-33N 150-43W,
57-22N 151-49W, 57-29N 152-24W,
57-13N 152-49W, 56-32N 153-10W.
2. CANCEL THIS MSG 011030Z AUG 17.
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.
- Area bound by
- Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
- 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.
Collected reports in this area · military exercises
11 within 180 nm since 2010 · 0 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.
- Gunnery exercises 191600Z to 192300Z aug in area within one mile of 56-27.4N 151-48.4W2020-08-18
- Hazardous operations 100300Z to 100930Z jul, alternate 0300Z to 0930Z daily 11 thru 13 jul in areas bound…2017-07-05
- Gunnery exercises 252000Z to 260300Z may within 12000 yards of: a. 54-15N 158-00W2015-05-24
- Gunnery exercises 191600Z to 200200Z mar within five miles of 57-26N 151-27W2015-03-18
- Gunnery exercises 301800Z to 302100Z sep within five miles of 58-47N 151-09W2014-09-29
- Gunnery exercises 300100Z to 300400Z sep within five miles of 58-47.0N 151-09.1W2014-09-26
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
Worldwide in the collected sources
9 military exercises listed in force · see all
Record snapshot 2026-10-02 16:07Z; 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.