index

HYDROARC warnings in force as of 271215Z apr 18: 58/18, 57/18, 53/18, 44/18, 38/18

HYDROARC 59/18

issued: 2018-04-27 12:15Z
status: cancelled 2018-05-04 12:21Z (archive)
cancels: HYDROARC 55/18
authority: SFH 271215Z APR 18.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 271215Z APR 18:
   58/18, 57/18, 53/18, 44/18, 38/18.
   322/17, 307/17, 306/17, 293/17, 288/17,
   274/17, 267/17, 228/17, 189/17, 188/17,
   139/17.
   205/16, 155/16.
   345/15, 343/15.
   269/14, 268/14, 131/14, 131/14.
   193/12, 112/12.
2. THE COMPLETE TEXT OF ALL IN-FORCE HYDROARC
   BROADCAST WARNINGS ARE AVAILABLE ON THE NGA
   MARITIME SAFETY INFORMATION WEBSITE AT:
   msi.nga.mil/NGAPortal/MSI.portal.
   ALTERNATIVELY, THESE MAY BE REQUESTED BY E-MAIL
   FROM NGA AT [email protected].
3. CANCEL HYDROARC 55/18.

Timeline

HYDROARC warnings in force as of 201047Z apr 18: 54/18, 53/18, 52/18, 51/18, 44/18, 38/18cancels · 2018-04-20
HYDROARC warnings in force as of 201047Z apr 18: 54/18, 53/18, 52/18, 51/18, 44/18, 38/18replaced · 2018-04-20
HYDROARC warnings in force as of 041219Z may 18: 60/18, 58/18, 44/18, 38/18cancelled by · 2018-05-04

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

9 index warnings in force

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.