index

HYDROARC warnings in force as of 301341Z oct 20: 257/20, 252/20, 250/20, 249/20, 246/20, 245/20, 218/20,…

HYDROARC 258/20

issued: 2020-10-30 13:43Z
status: cancelled 2020-11-06 11:59Z (archive)
cancels: HYDROARC 255/20
authority: SFH 301342Z OCT 20.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 301341Z OCT 20:
   257/20, 252/20, 250/20, 249/20, 246/20, 245/20,
   218/20, 93/20, 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 255/20.

Timeline

HYDROARC warnings in force as of 231237Z oct 20: 252/20, 250/20, 249/20, 246/20, 245/20, 244/20, 239/20,…cancels · 2020-10-23
HYDROARC warnings in force as of 231237Z oct 20: 252/20, 250/20, 249/20, 246/20, 245/20, 244/20, 239/20,…replaced · 2020-10-23
HYDROARC warnings in force as of 061159Z nov 20: 266/20, 265/20, 264/20, 263/20, 260/20, 259/20, 249/20,…cancelled by · 2020-11-06

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.