I found that this one and windy.com give me bad information; something about the plugins I use and/or browser settings I suspect. With windy.com I saw Harvey crashing into Mexico and with earth.nullschool.net I just saw Irma almost directly south of Florida. Since it sounds like windy.com is based on the earth.nullschool.net code, I suspect it is the same issue in both. It seems like sometimes the map and wind layers get out of sync after moving the view area.
https://www.ventusky.com seems to work for me so far.