index

HYDROARC warnings in force as of 100350Z nov 18: 301/18, 300/18, 299/18, 298/18, 297/18, 294/18, 270/18,…

HYDROARC 304/18

issued: 2018-11-10 03:52Z
status: cancelled 2018-11-16 13:53Z (archive)
cancels: HYDROARC 303/18
authority: SFH 100345Z NOV 18.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 100350Z NOV 18:
   301/18, 300/18, 299/18, 298/18, 297/18, 294/18,
   270/18, 268/18, 256/18, 255/18, 254/18, 250/18,
   229/18, 225/18, 223/18, 161/18, 160/18, 147/18,
   146/18, 145/18.
   306/17, 288/17, 274/17, 267/17, 228/17, 189/17,
   188/17, 139/17.
   205/16, 155/16.
   345/15.
   269/14, 268/14, 131/14, 131/14.
   193/12.
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 303/18.

Timeline

HYDROARC warnings in force as of 021212Z nov 18: 289/18, 288/18, 287/18, 284/18, 280/18, 270/18, 268/18,…cancels · 2018-11-09
HYDROARC warnings in force as of 021212Z nov 18: 289/18, 288/18, 287/18, 284/18, 280/18, 270/18, 268/18,…replaced · 2018-11-09
HYDROARC warnings in force as of 161347Z nov 18: 309/18, 308/18, 307/18, 305/18, 301/18, 300/18, 299/18,…cancelled by · 2018-11-16

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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.