Hi Piero,
The update time can be adjusted .. I have it 'slow' for testing only. The forecasts line can be hidden by editing the gauges .html page (and removing the <canvas id="canvas_status" width="350" height="25"></canvas>
code, I think).
Yes, the update timeout after 20 instances is adjustable in the gauges.js script itself.
I have to finish up some units conversions as WeatherFlash only emits in F,mph,inHg,in for temp,wind,baro,rain and the defaults are set when the gauges page first loads the data.
Like I said, tomorrow is likely the conclusion of the coding.
Regrettably, VWS doesn't does not provide many of the data needed for the full operation of the Steel Series Gauges. I have used what is available in wflash/wflash2.txt files, but can't display something that is not in there, so no WindRose info is available (amongst other missing data values).
I'm using the 'Weather-Display' option on the script with only three changes in the gauges.js code needed.