A system for providing the capability for a vehicle to avoid regions of signal interference from high energy (HE) electromagnetic (EM) radiation emitters. The system includes a processing module. A database is operatively connected to the processing module. The database comprises a plurality of geographical areas affected by HE EM radiation emitters and data associated with the geographical areas. The data includes location, lateral and vertical extents, and signal attenuation for selected geographical areas affected by HE EM radiation emitters. The data preferably also includes affected frequency spectrum for the selected geographical areas. A display system is operatively connected to the processing module. The processing module functions to receive information regarding the position of the vehicle and query the database to retrieve relevant HE EM radiation emitters which are a threat to the vehicle's ability to properly navigate or communicate. The relevant HE EM radiation emitters are displayed on the display system. The present invention provides enhanced situational awareness to the pilot and permits decision support systems to refine their trajectory through hazards.