Nav aids

The GPS navigation signal may be unreliable from 0800Z-1200Z daily 06 thru 12 aug, 0800Z-1200Z daily 18 thru…

NAVAREA XII 190/07

issued: 2007-08-04 20:23Z
status: cancelled 2007-09-06 06:14Z (archive)
authority: COGARD CAMSLANT CHESAPEAKE VA 041933Z AUG 07.
position: 32.105, -110.954 · r 70.8 nm
source: nga_json · first seen 2026-08-17 13:38Z

Original warning text

THE GPS NAVIGATION SIGNAL MAY BE UNRELIABLE FROM
0800Z-1200Z DAILY 06 THRU 12 AUG, 0800Z-1200Z DAILY
18 THRU 26 AUG DUE TO INTERFERENCE TESTING ON GPS
FREQUENCIES USED IN SHIPBOARD NAVIGATION AND HANDHELD
SYSTEMS. GPS SYSTEMS THAT RELY ON GPS, SUCH AS E-911,
AIS AND DSC, MAY BE AFFECTED WITHIN 70.78 MILES
OF 32-06-16.4N 110-57-13.5W. DURING THIS PERIOD GPS
USERS ARE ENCOURAGED TO REPORT ANY GPS SERVICE OUTAGES
THAT THEY MAY EXPERIENCE DURING THIS TESTING VIA THE
NAVIGATION INFORMATION SERVICE (NIS), PHONE: 703 313 5900
OR BY USING THE NAVCEN WEB SITE, GPS REPORT A PROBLEM WORKSHEET:
WWW.NAVCEN.USCG.GOV.

This area · aids-to-navigation notices

8 within 180 nm since 2007 · 0 in the last 12 months · 0 in force now

Cabo tepoca light 30-16.3N 112-51.1W unlit2017-03-15
Cabo tepoca light 30-16.3N 112-51.1W unlit2016-06-22
Puerto pensaco light 31-17.1N 113-34.7W unlit2015-11-06
Cabo tepoca light 30-16.3N 112-51.1W unreliable2015-02-24
Golfo de California2014-08-22
Golfo de California2013-09-20

Season · when aids-to-navigation notices happen here

month of issue, all years in the archive

Timeline

NAVAREA XII messages in force 060800Z sep 2007cancelled by · 2007-09-06

Nearby now · within 120 nm

Nothing else in force within 120 nm.

Worldwide now

189 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.