index

HYDROARC warnings in force as of 301315Z jul 21: 156/21, 155/21, 154/21, 153/21, 152/21, 150/21, 145/21,…

HYDROARC 157/21

issued: 2021-07-30 13:16Z
status: cancelled 2021-08-06 12:49Z (archive)
cancels: HYDROARC 149/21
authority: SFH 301312Z JUL 21.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 301315Z JUL 21:
   156/21, 155/21, 154/21, 153/21, 152/21, 150/21,
   145/21, 141/21, 138/21, 135/21, 58/21, 9/21.
   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 149/21.

Timeline

HYDROARC warnings in force as of 231145Z jul 21: 148/21, 147/21, 146/21, 145/21, 143/21, 141/21, 138/21,…cancels · 2021-07-23
HYDROARC warnings in force as of 231145Z jul 21: 148/21, 147/21, 146/21, 145/21, 143/21, 141/21, 138/21,…replaced · 2021-07-23
HYDROARC warnings in force as of 061246Z aug 21: 169/21, 167/21, 166/21, 165/21, 164/21, 163/21, 155/21,…cancelled by · 2021-08-06

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.