Topic: PWS wind says "Unavailable" when it's at 0... sometimes?

[TanerH]

Hey all,

WU seems to display "Unavailable" for one of my weather stations when the wind speed is zero (0).  I'm uploading data via weewx (4.1.1) using RapidFire, from a Davis Vantage Pro2.

I am uploading to another WU PWS ID via 5m intervals using a WeatherLink Live, and that one simply says the wind is from the North at 0.0mph.  (Coming from the same physical weather station).

Any ideas what might be wrong here?

I ran weewx in debug, and noticed it does not send a "windDir" when the "windSpeed" is 0.0, is WU expecting a Direction even when the speed is zero?

I could try hacking on weewx to send "windDir=0" if the speed is 0, but figured I would ask before trying that

Thanks,

-Taner

[TanerH]

Heh...

Well, I'll reply to myself because I figured it out after poking around some more.  This might help someone else in the future.

It seems WU *always* wants a wind direction sent.  Luckily, weewx lets me enable this simply by changing a config option "ignore_zero_wind" and setting it to False.

Details here -
http://weewx.com/docs/usersguide.htm#zero_windspeed
and
http://weewx.com/docs/usersguide.htm#ignore_zero_wind

-Taner