Other
Prn 23 unusable 171630Z to 180430Z may
HYDROLANT 976/99
- issued
- 1999-05-14 11:59Z
- status
- cancelled 1999-05-18 05:30Z (archive)
- self-cancels
- 1999-05-18 05:30Z
- authority
- COGARD NAVCEN ALEXANDRIA 141129Z MAY 99
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. PRN 23 UNUSABLE 171630Z TO 180430Z MAY. 2. CANCEL THIS MSG 180530Z MAY.
Activity windows · 1 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 1999-05-17 16:30Z | 1999-05-18 04:30Z | — | 12 h |
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
Nearby now · within 120 nm
Nothing else in force within 120 nm.
Worldwide now
34 other warnings in force · see all
Other
Everything the classifier did not place elsewhere. All current other warnings →
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.