Hello, hmm, i will do following. 1) i will buy a hand-held-windmeter to check windspeed at the current position of my weather-sensors ... maybe you are right and the position of the windsensor is not perfect. 2) I will move my weatherstation-outsensors to the top of the roof. (currently its not at the top, 3m lower, but no slipstream from west, north and south)
You should know that I see many kilometers to the mountains. There is nothing higher in sight (from the west) than my house. So the wind loves my roof :D i am just wondering why all other stations i checked have the same "problem". lets see :) thx for you help .... Am Sonntag, 8. März 2020 02:50:12 UTC+1 schrieb Cameron D: > > Hello Stephan, > I am still not sure why you think your station was reading 100km/h. I > wonder if the following could explain the discrepancy... > > If that speed came from official weather reports, then their standard (in > many countries) requires that they are measured in open flat areas with the > anemometer 10m above ground level. Wind speed decreases as you get closer > to the ground. > > Also, the presence of buildings, trees and so on, creates a much more > turbulent flow. The wind can have as much energy but lower measured speeds > are recorded since vertical components are not normally measured by home > instruments. > > > Cameron. > > > On Thursday, 5 March 2020 03:32:24 UTC+10, Stefan Pachlina wrote: >> >> Hello, >> >> feb 24 2020, it was a stormy day in austria ... but most weatherstations >> (weewx-map, wunderground-map) show windspeed like 64kph. >> but on this day wind speed was ~103kph >> i have the same problem with my weather-site. >> http://wetter.pachlina.net/ >> >> *i configured weewx.config to see kph:* >> [[[[Groups]]]] >> .... >> group_speed = km_per_hour >> group_speed2 = km_per_hour2 >> .... >> >> but what i see are miles and not kph. >> cause if i multiplicate the wind-speed with 1,61 i get the right >> wind-speed of 103 kph >> >> so what is to do to get the right values? >> is there something more to do? >> i read the manual again and again, but i cant find the solution to see >> right wind speed. >> all other values are ok .. like temperature in celsius. >> >> and this is what i see on many many weatherstation around austria, >> germany .... with weewx-map, wunderground, ... >> >> hmmmm any idea? >> thx >> >> Stefan >> >> -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/f6ee460c-bd4a-42b3-9adb-af70cc51c413%40googlegroups.com.
