Wind speed report error?

[foxy1305]

I have just downloaded October's figures and the max wind gust reported is 29.8mph. However during the recent gales I know the station indicated a high gust of over 45mph, so why doesnt this show up in the max/min report?

[steve]

Was Cumulus actually running at the time the high gust was recorded? As you say you "just downloaded October's figures", I assume it hasn't been running and you have just started it up to get the data from the station's logger?

The data is updated by the station every 48 seconds, but the values are only saved in the logger every N minutes, where N is whatever interval you have set the station to. Any readings which don't coincide with the N minute logging interval are lost for ever, unless Cumulus is actually running so can use all of the individual 48-second updates.

The only exception to the above is that the station does save one value separately if it is the all-time highest. Cumulus does not use the station's own all-time value, it maintains its own from the individual readings.