Other

Underwater ordnance detonations 260001Z to 282359Z jun within: a. 75 miles of 29-20N 134-20E

HYDROPAC 564/99

issued
1999-06-25 13:31Z
status
cancelled 1964-06-29 00:59Z (archive)
self-cancels
1999-06-29 00:59Z
authority
CTG SEVEN TWO PT FOUR 251051Z JUN 99
sea
Philippine Sea
position
25.000, 131.333
source
nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. UNDERWATER ORDNANCE DETONATIONS 260001Z TO 282359Z JUN
   WITHIN:
   A. 75 MILES OF 29-20N 134-20E.
   B. 50 MILES OF 20-40N 128-20E.
2. CANCEL THIS MSG 290059Z JUN.

Activity windows · 1 in this warning

opens (UTC)closes (UTC)locallength
1999-06-26 00:01Z1999-06-28 23:59Z71 h 58

Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.

This area · other warnings

26 within 180 nm since 1999 · 0 in the last 12 months · 0 in force now

99
00
05
10
15
16

Season · when other warnings happen here

J
F
M
A
M
J
J
A
S
O
N
D

month of issue, all years in the archive

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

35 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.