index

HYDROARC warnings in force as of 011458Z oct 21: 260/21, 259/21, 257/21, 256/21, 255/21, 254/21, 253/21,…

HYDROARC 261/21

issued: 2021-10-01 15:03Z
status: cancelled 2021-10-08 12:05Z (archive)
cancels: HYDROARC 251/21
authority: SFH 011458Z OCT 21.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 011458Z OCT 21:
   260/21, 259/21, 257/21, 256/21, 255/21, 254/21,
   253/21, 252/21, 243/21, 241/21, 232/21, 211/21,
   208/21, 207/21, 205/21, 203/21, 190/21, 186/21,
   178/21, 176/21, 167/21, 166/21, 145/21, 141/21,
   58/21.
   249/20, 245/20, 41/20.
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 251/21.

Timeline

HYDROARC warnings in force as of 241322Z sep 21: 250/21, 248/21, 247/21, 246/21, 243/21, 241/21, 240/21,…cancels · 2021-09-24
HYDROARC warnings in force as of 241322Z sep 21: 250/21, 248/21, 247/21, 246/21, 243/21, 241/21, 240/21,…replaced · 2021-09-24
HYDROARC warnings in force as of 081021Z oct 21: 273/21, 272/21, 271/21, 270/21, 269/21, 268/21, 257/21,…cancelled by · 2021-10-08

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.