Well, now I'm feeling pretty stupid. Earlier today I had noticed that the wind was zero on several occasions that I checked my Davis console and it took a while to sink in that my anemometer my be frozen up. Sure enough. Iced over in Austin Texas! The funny thing was the third time I noticed the 0 wind speed, I checked some other stations near me and they too had zero wind and I thought to myself, "well, mine must be reading correctly". D'oh!