index

HYDROARC warnings in force as of 201217Z jul 18: 158/18, 157/18, 154/18, 153/18, 152/18, 150/18, 147/18,…

HYDROARC 159/18

issued: 2018-07-20 12:18Z
status: cancelled 2018-07-27 12:07Z (archive)
cancels: HYDROARC 151/18
authority: SFH 201218Z JUL 18.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 201217Z JUL 18:
   158/18, 157/18, 154/18, 153/18, 152/18, 150/18,
   147/18, 146/18, 145/18, 142/18, 139/18, 114/18,
   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 151/18.

Timeline

HYDROARC warnings in force as of 131354Z jul 18: 150/18, 147/18, 146/18, 145/18, 144/18, 142/18, 139/18,…cancels · 2018-07-13
HYDROARC warnings in force as of 131354Z jul 18: 150/18, 147/18, 146/18, 145/18, 144/18, 142/18, 139/18,…replaced · 2018-07-13
HYDROARC warnings in force as of 271159Z jul 18: 165/18, 163/18, 162/18, 161/18, 160/18, 158/18, 154/18,…cancelled by · 2018-07-27

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Worldwide now

10 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.