index

HYDROARC warnings in force as of 161317Z oct 20: 240/20, 239/20, 238/20, 237/20, 236/20, 235/20, 234/20,…

HYDROARC 242/20

issued: 2020-10-16 13:19Z
status: cancelled 2020-10-23 12:48Z (archive)
cancels: HYDROARC 224/20
authority: SFH 161319Z OCT 20.
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. HYDROARC WARNINGS IN FORCE AS OF 161317Z OCT 20:
   240/20, 239/20, 238/20, 237/20, 236/20, 235/20,
   234/20, 229/20, 226/20, 225/20, 218/20, 211/20,
   210/20, 204/20, 174/20, 158/20, 93/20, 41/20.
   306/19, 252/19.
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 224/20.

Timeline

HYDROARC warnings in force as of 091306Z oct 20: 222/20, 221/20, 220/20, 218/20, 211/20, 210/20, 204/20,…cancels · 2020-10-09
HYDROARC warnings in force as of 091306Z oct 20: 222/20, 221/20, 220/20, 218/20, 211/20, 210/20, 204/20,…replaced · 2020-10-09
HYDROARC warnings in force as of 231237Z oct 20: 252/20, 250/20, 249/20, 246/20, 245/20, 244/20, 239/20,…cancelled by · 2020-10-23

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.