The file GWX.exe is located in a subfolder of C:\Windows\System32. Known file sizes on Windows 8/7/XP are 406,528 bytes (96% of all occurrences) or 392,704 bytes. There is an icon for this program on the taskbar next to the clock.
What Causes Thunder? Thunder is the sound of the air expanding around a lightning bolt. Air rapidly expands around a lightning bolt's path, creating an acoustic shock wave that is heard as thunder. Hail can accompany thunderstorms.
A thunderstorm is a storm with lightning and thunder. They are caused by an updraft, which occurs when warm, moist air rises vertically into the atmosphere. The updraft creates a cumulus cloud, which will eventually be the thunderstorm cloud.