index

HYDROARC warnings in force as of 181316Z may 18: 80/18, 79/18, 77/18, 76/18, 75/18, 74/18, 73/18, 72/18,…

HYDROARC 82/18

issued: 2018-05-18 13:17Z
status: cancelled 2018-05-25 17:08Z (archive)
cancels: HYDROARC 68/18
authority: SFH 181315Z MAY 18.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 181316Z MAY 18:
   80/18, 79/18, 77/18, 76/18, 75/18, 74/18, 73/18,
   72/18, 58/18, 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 68/18.

Timeline

HYDROARC warnings in force as of 111202Z may 18: 67/18, 66/18, 65/18, 58/18, 38/18cancels · 2018-05-11
HYDROARC warnings in force as of 111202Z may 18: 67/18, 66/18, 65/18, 58/18, 38/18replaced · 2018-05-11
HYDROARC warnings in force as of 251707Z may 18: 94/18, 93/18, 92/18, 87/18, 84/18, 75/18, 74/18, 72/18,…cancelled by · 2018-05-25

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Worldwide now

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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.