index

HYDROARC warnings in force as of 231423Z feb 18: 20/18, 14/18

HYDROARC 21/18

issued: 2018-02-23 14:24Z
status: cancelled 2018-03-03 15:50Z (archive)
cancels: HYDROARC 19/18
authority: SFH 231423Z FEB 18.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 231423Z FEB 18:
   20/18, 14/18.
   322/17, 307/17, 306/17, 293/17, 288/17, 287/17,
   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 19/18.

Timeline

HYDROARC warnings in force as of 161754Z feb 18: 18/18, 17/18, 14/18cancels · 2018-02-16
HYDROARC warnings in force as of 161754Z feb 18: 18/18, 17/18, 14/18replaced · 2018-02-16
HYDROARC warnings in force as of 031549Z mar 18: 23/18, 22/18, 14/18cancelled by · 2018-03-03

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.