More info on the latest GPS interference This one may be based on shutting down satellites or deliberate unreliable signals during military training exercises. That could affect IFR operations and should be a NOTAM D and a NFDC NOTAM.
The U.S. military's exercises on the Nevada Test and Training Range will impact vast portions of the Western U.S. Flying.
Beginning today, January 26, and running through February 18, GPS-equipped aircraft operating in the Western United States should be prepared for possible satellite signal disruptions at various altitudes. The disruptions may lead to traffic delays and even ground stops.