Nav aids
GPS unreliable 1600Z to 2000Z daily 22 feb thru 16 mar and 0001Z to 0400Z daily 23 feb thru 17 mar within 40…
NAVAREA IV 55/04
- issued
- 2004-02-20 15:10Z
- status
- cancelled 2004-03-17 05:00Z (archive)
- self-cancels
- 2004-03-17 05:00Z
- authority
- CCGD SEVEN BNM 329/04 201232Z FEB 04
- sea
- North Atlantic Ocean
- position
- 30.833, -80.417 · r 40.0 nm
- source
- nga_json · first seen 2026-08-17 13:38Z
Original warning text
1. GPS UNRELIABLE 1600Z TO 2000Z DAILY 22 FEB THRU 16 MAR AND 0001Z TO 0400Z DAILY 23 FEB THRU 17 MAR WITHIN 40 MILES OF 30-50N 080-25W. 2. CANCEL THIS MSG 170500Z MAR.
Activity windows · 48 in this warning
| opens (UTC) | closes (UTC) | local | length |
|---|---|---|---|
| 2004-02-22 16:00Z | 2004-02-22 20:00Z | — | 4 h |
| 2004-02-23 00:01Z | 2004-02-23 04:00Z | — | 3 h 59 |
| 2004-02-23 16:00Z | 2004-02-23 20:00Z | — | 4 h |
| 2004-02-24 00:01Z | 2004-02-24 04:00Z | — | 3 h 59 |
| 2004-02-24 16:00Z | 2004-02-24 20:00Z | — | 4 h |
| 2004-02-25 00:01Z | 2004-02-25 04:00Z | — | 3 h 59 |
| 2004-02-25 16:00Z | 2004-02-25 20:00Z | — | 4 h |
| 2004-02-26 00:01Z | 2004-02-26 04:00Z | — | 3 h 59 |
| … 40 more | |||
Parsed from the warning text; outside these windows the area is normally not active, but the warning stays in force until cancelled.
This area · aids-to-navigation notices
151 within 180 nm since 1996 · 1 in the last 12 months · 2 in force now
96
00
05
10
15
20
25
26
- Broadcast and communication services unreliable at uscg remote communication facilities: a. boston 41-43.00N…2026-07-03
- Messaging services unavailable at uscg remote communication facilities: a. boston (f) 41-42.00N 070-30.30W2025-06-13
- NAVTEX station charleston (e) 32-08.00N 081-42.00W unreliable2024-05-07
- Mf, hf, and dsc services unreliable 241300Z to 241800Z apr at uscg remote communication facilities: a.…2024-04-23
- Mf, hf and dsc services off air 221300Z to 221800Z apr at uscg remote communication facilities: a. boston…2024-04-18
- Mf, hf, and dsc services unreliable 141400Z to 141500Z mar at uscg remote communication facilities: a.…2024-03-12
Season · when aids-to-navigation notices 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
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.