I've seen wind speeds of 100 kt and varying wildly whilst taxiing and seen the ground speed calculated to be anything between 5 and 20 kt while we were parked at the gate!
You have seen 100 knots of wind speed when taxiing? Either your indication was in error, or you were seriously in error. But which one?
As TAS is needed to account for windspeed, and a few knots of wind (especially if not straight down the pitot tube) won't give an indication or meaningful data to account for TAS, and as the aircraft can't actually sense the direction or value of the wind when taxiing...how do you suppose the aircraft data systems can come up with a realistic wind value when on the ground? Short answer...they can't.
The values you're seeing are in error.
But if you really believe you've been taxiiing in 100 knot winds, time to step inside and wait it out. Seriously.