METAR gust measurements?

[Ellinwood]

Co-worker of mine looking into wind gust measurements has found that the ASOS measures gusts with 3 second max during a 2 minute period, but is unsure about what other measurement sites like AWOS use and what standards are used in different international sites (buoy, Caribbean, etc.).

He saw this information here: http://cimmse.wordpress.com/2013/05/02/wind-gust-climatology-for-southeast-georgia-and-southern-south-carolina/ but is unsure if all of that is correct.

- NDFD Gridded Database: the maximum 3-second wind speed (in knots) forecast to occur within a 2-minute interval at a height of 10 meters.

- NDBC Buoys: 5-second peak gust during an 8-minute period at a height of 5 meters.

- C-MAN Station: 5-second peak gust during a 2-minute period at a height of 10 meters.

- ASOS: 3-second peak gust during a 2-minute period at a height of 10 meters (corrected 5/9/13).

- AWOS: 5-second peak gust during a 2-minute period at a height of 10 meters.

Can anyone provide some additional info (preferably with links to official sources)?

[famartin]

Well... when it comes to METAR, there is a specification:  The reported current "gust" is the highest gust within the last 10 minutes.

http://www.met.tamu.edu/class/metar/metar-pg6.html