National warning service · United Kingdom

UK coastal warnings (WZ series)

Recorded as: WZ

The UK Hydrographic Office's national series of coastal navigational warnings. seahazards shows them only where the U.S. NGA relayed them; the UK list itself is not collected, because its terms do not allow redistribution.

National warning services and NAVAREA coordinators collect reports of dangers in their waters — from hydrographic surveys, navies, ports and ships — and broadcast them as numbered navigational warnings, some ocean-wide and some coastal.

What the archive holds

16,018 messages in this archive record WZ as their authority, issued from 1999-05-16 to 2024-05-09. None of them is in force in the latest lists we collected.

Nav aids accounts for 5,911 of 16,018 recorded messages (37%), the largest warning type group in this selection.

Attributed to NAVAREAs, they fall mostly in NAVAREA V (51), NAVAREA III (49) and NAVAREA II (39).

Located messages lie in 14 sea areas, most often North Sea, English Channel and Celtic Sea.

The largest yearly count is 2000, with 1,141 messages. Collection is incomplete between 2024-05 and 2026-08-17, so those years are not comparable.

They reached this archive through HYDROLANT (16,013), HYDROPAC (4) and NAVAREA IV (1).

Messages by year of issue

'99
'00
'01
'02
'03
'04
'05
'06
'07
'08
'09
'10
'11
'12
'13
'14
'15
'16
'17
'18
'19
'20
'21
'22
'23
'24

By month of issue, all years

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Warning types

Where

NAVAREA V 51 · NAVAREA III 49 · NAVAREA II 39 · NAVAREA I 19 · NAVAREA VI 12 · NAVAREA VII 5 · NAVAREA IV 1 · NAVAREA XIX 1

Most recently issued

  1. HYDROLANT 973/24 · Other2024-05-08
    Cancel HYDROLANT 833/24 and this msg, aids restored
  2. HYDROLANT 939/24 · Other2024-05-02
    Cancel HYDROLANT 891/24 and this msg, aid restored
  3. HYDROLANT 936/24 · Wrecks · Irish Sea and St. George's Channel2024-05-02
    Dangerous wreck in 54-12.68N 004-16.44W
  4. HYDROLANT 931/24 · Nav aids · North Sea2024-05-01
    All navigational aids at platform 15/17-A 58-25.00N 000-20.10E inoperative
  5. HYDROLANT 914/24 · Other2024-04-29
    Cancel HYDROLANT 909/24 and this msg, service restored
  6. HYDROLANT 909/24 · Nav aids · Inner Seas off the West Coast of Scotland2024-04-29
    Dsc services at glengorm site 56-37.90N 006-08.00W off air
  7. HYDROLANT 896/24 · Other2024-04-26
    Cancel HYDROLANT 882/24 and this msg, operations completed
  8. HYDROLANT 891/24 · Nav aids · Bristol Channel2024-04-26
    Fog signal at mumbles head light 51-34.00N 003-58.30W inoperative

Earliest in the archive

  1. HYDROLANT 984/99 · Other · North Atlantic Ocean1999-05-15
    Seabed tide gauges established in 54-51.5N 010-08.1W and 55-00.0N 009-07.0W

Other national warning services in NAVAREA V

Counts are messages recording this issuer as their authority, recounted 2026-09-24; see coverage for what is collected. Not for navigation.

UK coastal warnings (WZ series) — navigational warnings it issued · seahazards