Hazardous high power radar operations 180100Z aug to 100001Z sep vicinity 28-50.0N 136-00.0W
North Pacific Ocean · HYDROPAC 1564/06
What this record establishes
Archived notice · 2006-09-10 01:01Z
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) · CCGDELEVEN ALAMEDA CA 162102Z AUG 06.. Issued 2006-08-16 23:36Z. 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 28.833, -136.000. 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) | local | length |
|---|---|---|---|
| 2006-08-18 01:00Z | 2006-09-10 00:01Z | — | 551 h 01 |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
- issued
- 2006-08-16 23:36Z
- status
- Archived notice
- self-cancels
- 2006-09-10 01:01Z
- authority
- CCGDELEVEN ALAMEDA CA 162102Z AUG 06.
- issued by
- CCGDELEVEN ALAMEDA CA
- sea
- North Pacific Ocean
- position
- 28.833, -136.000
- source
- NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z
Original warning text
1. HAZARDOUS HIGH POWER RADAR OPERATIONS 180100Z AUG TO 100001Z SEP VICINITY 28-50.0N 136-00.0W. THREE MILE BERTH REQUIRED. 2. CANCEL THIS MSG 100101Z SEP.
Reading this warning
- 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.
- 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.
- Wide berth requested
- Keep well clear — or, when a distance is given ("TWO MILE BERTH REQUESTED"), at least that far away.
- CANCEL THIS MSG
- The warning's own expiry: a line telling the reader when the message cancels itself.
Collected reports in this area · other warnings
7 within 180 nm since 2006 · 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.
- Flares sighted in 29-46.00N 133-19.00W2023-04-08
- Three red flares sighted in 29-13N 137-57W2015-02-03
- Green flare sighted in 29-05N 139-08W at 100335Z oct2012-10-09
- Flare sighted in 29-42.14N 133-10.16W2011-09-28
- Bombing exercises 272200Z to 280300Z jul in area bound by 27-49.3N 139-29.7W, 28-03.5N 138-47.6W, 27-45.3N…2009-07-25
- Hazardous high power radar operations 180100Z aug to 100001Z sep vicinity 28-50.0N 136-00.0W2006-08-16
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
23 other warnings listed in force · see all
Record snapshot 2026-10-02 01:59Z; source collection times vary.
Other
Everything the classifier did not place elsewhere. All current other warnings →
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.