Nav aids

GPS jamming exercises occur in the Norwegian Sea near Norway from September 9 to 18, with extended hours on September 15 and 16.

Norwegian Sea · HYDROARC 222/26

What this record establishes

Cancelled notice · 2026-09-09 13:15Z

This notice disappeared from the issuing source's in-force list. No explicit recovery or all-clear is established by that removal.

Source and dates
NGA MSI in-force warnings (DailyMem*.txt). Issued 2026-09-08 21:02Z. First collected 2026-09-09 17:47Z; last seen in collection 2026-09-23 14:47Z. Collection dates record ingestion, not a new incident or a fresh field observation.
Location covered
Norwegian Sea. The map shows an area described by the warning; the listed coordinate is its representative center. Check the original wording for limits and qualifications.

Current notices and reporting history in the Norwegian Sea →

Activity windows · 10 in this warning

opens (UTC)closes (UTC)locallength
2026-09-09 06:00Z2026-09-09 16:00Z—10 h
2026-09-10 06:00Z2026-09-10 16:00Z—10 h
2026-09-11 06:00Z2026-09-11 16:00Z—10 h
2026-09-12 06:00Z2026-09-12 16:00Z—10 h
2026-09-13 06:00Z2026-09-13 16:00Z—10 h
2026-09-14 06:00Z2026-09-14 16:00Z—10 h
2026-09-15 06:00Z2026-09-15 16:00Z—10 h
2026-09-16 06:00Z2026-09-16 16:00Z—10 h
… 2 more

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

issued
2026-09-08 21:02Z
status
Cancelled notice
self-cancels
2026-09-18 17:00Z
sea
Norwegian Sea
position
69.340, 14.835
source
NGA MSI in-force warnings (DailyMem*.txt) · first seen 2026-09-09 17:47Z

Original warning text

NORWEGIAN SEA.
NORWAY.
1. GPS JAMMING EXERCISES 0600Z TO 1600Z
   DAILY 09 THRU 18 AND 1600Z TO 2000Z
   DAILY 15 AND 16 SEP IN AREA BOUND BY
   69-50.40N 013-42.00E, 69-49.80N 016-15.60E,
   69-07.20N 016-23.40E, 68-39.00N 013-25.80E.
2. CANCEL THIS MSG 181700Z SEP 26.

Reading this warning

GNSS / GPS
Satellite positioning — GPS and other systems — and the testing, jamming and interference that make it unreliable in an area.
Area bound by
Introduces a list of positions that are the corners of an area — the polygon the warning applies to.
Position (degrees and minutes)
How warnings write positions: degrees, a hyphen, then minutes, with N/S and E/W — 49-40.8N 003-43.8W.
CANCEL THIS MSG
The warning's own expiry: a line telling the reader when the message cancels itself.
Date-time group (DTG)
A compact UTC timestamp — day, hour and minute followed by Z — such as 201500Z for the 20th at 15:00 UTC.

All warning terms →

Collected reports in this area · aids-to-navigation notices

5 within 180 nm since 2019 · 2 in the last 12 months · 0 listed in force now

19
20
25
26

Counts include repeat notices about the same situation. NGA archive coverage ends 2024-05; live collection began 2026-08-17. The period between them is incomplete. An empty year is not evidence that no hazards occurred.

Month of issue in the collected archive

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

All available years combined. Uneven collection and repeat bulletins affect these counts; this chart does not measure the seasonality or probability of incidents.

Nearby notices listed in force · within 120 nm

No other collected notice is currently listed in force within this radius. This does not establish safe conditions.

Worldwide in the collected sources

147 aids-to-navigation notices listed in force · see all

Record snapshot 2026-09-24 12:21Z; source collection times vary.

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.