index

HYDROARC warnings in force as of 161348Z apr 21: 54/21, 53/21, 49/21, 9/21, 249/20, 245/20, 41/20, 2. the…

HYDROARC 55/21

issued: 2021-04-16 13:50Z
status: cancelled 2021-04-23 11:43Z (archive)
cancels: HYDROARC 50/21
authority: SFH 161349Z APR 21.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 161348Z APR 21:
   54/21, 53/21, 49/21, 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 50/21.

Timeline

HYDROARC warnings in force as of 091146Z apr 21: 49/21, 47/21, 9/21cancels · 2021-04-09
HYDROARC warnings in force as of 091146Z apr 21: 49/21, 47/21, 9/21replaced · 2021-04-09
HYDROARC warnings in force as of 231103Z apr 21: 63/21, 62/21, 59/21, 58/21, 54/21, 53/21, 9/21cancelled by · 2021-04-23

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

10 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.