index

HYDROARC warnings in force as of 251431Z aug

HYDROARC 187/23

issued
2023-08-25 14:35Z
status
cancelled 2023-09-01 15:16Z (archive)
cancels
HYDROARC 172/23
authority
NGA NAVSAFETY 0/23 251431Z AUG 23.
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 251431Z AUG.
   ALL THE INFORCE WARNINGS ARE LISTED HERE.
   186/23, 185/23, 184/23, 183/23, 182/23, 181/23, 180/23,
   179/23, 178/23, 177/23, 176/23, 170/23, 169/23, 164/23,
   163/23, 162/23, 158/23, 157/23, 156/23, 155/23, 154/23,
   138/23, 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 172/23.

Timeline

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

8 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.