index
HYDROARC warnings in force as of 231237Z oct 20: 252/20, 250/20, 249/20, 246/20, 245/20, 244/20, 239/20,…
HYDROARC 255/20
- issued
- 2020-10-23 12:48Z
- status
- cancelled 2020-10-30 13:43Z (archive)
- cancels
- HYDROARC 306/19HYDROARC 204/20HYDROARC 237/20HYDROARC 242/20HYDROARC 251/20
- authority
- SFH 231248Z OCT 20.
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. HYDROARC WARNINGS IN FORCE AS OF 231237Z OCT 20: 252/20, 250/20, 249/20, 246/20, 245/20, 244/20, 239/20, 238/20, 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 306/19, 204/20, 237/20, 242/20, 251/20.
Timeline
- Sub-surface scientific moorings established in 71-00.13N 135-29.44Wcancels · 2019-12-04
- Scientific mooring, top float 12 meters below surface, established in 70-34.7N 123-38.2Wcancels · 2020-09-22
- Underwater equipment established in: a. 73-06.76N 080-14.40Ecancels · 2020-10-15
- HYDROARC warnings in force as of 161317Z oct 20: 240/20, 239/20, 238/20, 237/20, 236/20, 235/20, 234/20,…cancels · 2020-10-16
- Odas buoy established in 79-00.0N 087-42.7Ecancels · 2020-10-22
- Sub-surface scientific moorings established in 71-00.13N 135-29.44Wreplaced · 2019-12-04
- Scientific mooring, top float 12 meters below surface, established in 70-34.7N 123-38.2Wreplaced · 2020-09-22
- Underwater equipment established in: a. 73-06.76N 080-14.40Ereplaced · 2020-10-15
- HYDROARC warnings in force as of 161317Z oct 20: 240/20, 239/20, 238/20, 237/20, 236/20, 235/20, 234/20,…replaced · 2020-10-16
- Odas buoy established in 79-00.0N 087-42.7Ereplaced · 2020-10-22
- HYDROARC warnings in force as of 301341Z oct 20: 257/20, 252/20, 250/20, 249/20, 246/20, 245/20, 218/20,…cancelled by · 2020-10-30
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.