index

HYDROARC warnings in force as of 181515Z aug

HYDROARC 172/23

issued
2023-08-18 15:17Z
status
cancelled 2023-08-25 14:35Z (archive)
cancels
HYDROARC 148/23HYDROARC 161/23
authority
NGA NAVSAFETY 0/23 181513Z AUG 23.
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 181515Z AUG.
   ALL THE INFORCE WARNINGS ARE LISTED HERE.
   171/23, 170/23, 169/23, 168/23, 167/23, 164/23,
   163/23, 162/23, 158/23, 157/23, 156/23, 155/23,
   154/23, 138/23, 135/23, 125/23, 109/23, 107/23,
   104/23.
   359/22, 293/22, 291/22, 283/22, 271/22, 262/22,
   260/22, 247/22, 235/22, 228/22, 224/22, 223/22,
   209/22, 198/22, 175/22, 152/22.
   208/21, 207/21.
2. THE COMPLETE TEXT OF ALL IN-FORCE HYDROARC
   BROADCAST WARNINGS ARE AVAILABLE ON THE NGA
   MARITIME SAFETY INFORMATION WEBSITE AT:
   MSI.NGA.MIL/NAVWARNINGS.
   ALTERNATIVELY, THESE MAY BE REQUESTED BY E-MAIL
   FROM NGA AT [email protected].
3. CANCEL HYDROARC 148/23, 161/23.

Timeline

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.