I am pushing a campaign with all La Crosse HeavyWeather users to contact La Crosse at email@example.com
and ask them to get Wind Gust data added to the currdat.lst file. While they may not be able to capture the 6 second updates that would show in HeavyWeather, it should be no biggie to at least capture the gust recorded on the minutely update of the history.dat file.
I made a support request and was given a 1-line response of 'It can't be added', but when I went back and asked again about adding it they responded 'WE have noted your suggestion for future consideration.'
So, I think if they have numerous requests for this from lots of users, it may help speed them up on getting it included.
If you are a La Crosse WS-28XX user and use HeavyWeather and the currdat.lst file to upload your data to Weather Underground or another Internet site, please consider sending them an email asking that they get this change made ASAP.