Nav aids

Loran-c station grangeville, rates 7980-W and 9610-Z, off air 091400Z to 091500Z nov

NAVAREA IV 371/99

issued: 1999-11-04 20:42Z
status: cancelled 1999-11-09 16:00Z (archive)
self-cancels: 1999-11-09 16:00Z
cancels: NAVAREA IV 370/99
authority: NAVCEN ALEXANDRIA 041936Z NOV 99
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

1. LORAN-C STATION GRANGEVILLE, RATES 7980-W AND 9610-Z,
   OFF AIR 091400Z TO 091500Z NOV.
2. CANCEL NAVAREA IV 370/99.
3. CANCEL THIS MSG 091600Z NOV.

Activity windows · 1 in this warning

opens (UTC)	closes (UTC)	local	length
1999-11-09 14:00Z	1999-11-09 15:00Z	—	1 h

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

Timeline

Loran-c station grangeville, rates 7980-W and 9610-Z, off air 091400Z to 091500Z nov, alternate 101400Z to…replaced · 1999-11-04

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

193 aids-to-navigation notices in force · see all

Nav aids

Lights extinguished, buoys off station, RACON/NAVTEX outages. All current aids-to-navigation notices →

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.