What type of information is typically covered in an AIRMET?

The correct answer regarding the type of information typically covered in an AIRMET is widespread mountain obscuration. AIRMETs, short for Airmen's Meteorological Information, are designed to provide pilots with information about hazardous weather conditions that may affect flight operations. Specifically, they address weather phenomena that are less severe than those covered by SIGMETs, which pertain to more serious weather like severe turbulence or thunderstorms.

Widespread mountain obscuration refers to conditions where mountainous areas are obscured by clouds, fog, or precipitation, significantly impacting visual flight operations. This is a critical piece of information for pilots, particularly in mountainous regions where navigation and maintaining visual references are crucial for flight safety.

Other options like severe turbulence warnings fall under the more stringent criteria for SIGMETs, which denote significant and hazardous weather. Low-level wind shear, while a serious concern for takeoff and landing, is also typically covered in more detail by SIGMETs or other advisories rather than AIRMETs. Flight route updates are logistical rather than meteorological information, and thus not within the scope of what AIRMETs cover.