Nav aids

Nga chart 36025 (1ST ed)

Irish Sea and St. George's Channel · HYDROLANT 648/10

What this record establishes

Archived notice · 2010-04-15 18:00Z

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) · WZ 427/10 142308Z APR 10.. Issued 2010-04-15 04:52Z. 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
Irish Sea and St. George's Channel. The parsed report position is 53.417, -4.288. It is a position in the source message, not a live location. Check the original wording for limits and qualifications.

Related notices and cancellation links

Current notices and reporting history in the Irish Sea and St. George's Channel →

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
2010-04-15 07:30Z2010-04-15 17:00Z—9 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
2010-04-15 04:52Z
status
Archived notice
self-cancels
2010-04-15 18:00Z
authority
WZ 427/10 142308Z APR 10.
issued by
WZ
sea
Irish Sea and St. George's Channel
position
53.417, -4.288
source
NGA MSI broadcast-warn JSON (archive, frozen 2024-05) · first seen 2026-08-17 13:38Z

Original warning text

WALES-NORTH COAST.
NGA CHART 36025 (1ST ED).
1. POINT LYNAS LIGHT 53-25.0N 004-17.3W
   UNLIT 150730Z TO 151700Z APR.
2. HYDROLANT 646/10 NOT PROMULGATED.
3. CANCEL THIS MSG 151800Z APR.

Reading this warning

Chart reference
The number of the nautical chart on which the reported position lies.
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.
Unlit / extinguished
A light, buoy or structure that is not showing its charted light.
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.
HYDROLANT
The U.S. long-range warning series for Atlantic waters outside NAVAREA IV, including the eastern Atlantic, the Mediterranean and adjoining seas.
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

1703 within 180 nm since 1997 · 4 in the last 12 months · 0 listed in force now

97
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

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

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

Record snapshot 2026-10-03 16:43Z; 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.