預警系統
As many television stations had not upgraded their master control infrastructures to allow high definition broadcasts of non-network programs or the hardware for the First Warning system to be compatible with HD broadcasts prior to the late 2000s and early 2010s, the high definition program feed would often be downconverted to standard definition when the map/ticker graphic was displayed. Although many stations have upgraded to HD-compatible versions of First Warning, the on-screen graphic map and/or scroll in some cases, may be displayed in animorphic widescreen if the system is not properly set to a 16:9 display, causing partial cropping of the graphic outside of the safe area on television sets.