index

HYDROARC warnings in force as of 081104Z sep 17: 256/17, 255/17, 254/17, 253/17, 252/17, 251/17, 250/17,…

HYDROARC 257/17

issued: 2017-09-08 11:07Z
status: cancelled 2017-09-15 11:45Z (archive)
cancels: HYDROARC 241/17
authority: SFHGA 081106Z SEP 17.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 081104Z SEP 17:
   256/17, 255/17, 254/17, 253/17, 252/17, 251/17,
   250/17, 249/17, 248/17, 235/17, 230/17, 229/17,
   228/17, 225/17, 224/17, 217/17, 204/17, 197/17,
   189/17, 188/17, 182/17, 180/17, 179/17, 163/17,
   156/17, 152/17, 151/17, 148/17, 139/17, 138/17,
   132/17, 124/17, 123/17, 121/17, 119/17, 104/17,
   97/17, 81/17, 72/17, 59/17, 57/17, 44/17.
   222/16, 221/16, 220/16, 205/16, 155/16.
   345/15, 343/15, 320/15, 248/15.
   269/14, 268/14, 131/14.
   220/12, 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 241/17.

Timeline

HYDROARC warnings in force as of 011644Z sep 17: 240/17, 238/17, 237/17, 236/17, 235/17, 230/17, 229/17,…cancels · 2017-09-01
HYDROARC warnings in force as of 011644Z sep 17: 240/17, 238/17, 237/17, 236/17, 235/17, 230/17, 229/17,…replaced · 2017-09-01
HYDROARC warnings in force as of 151145Z sep 17: 276/17, 275/17, 274/17, 273/17, 272/17, 271/17, 270/17,…cancelled by · 2017-09-15

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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.