Is it already ' of times that happens me but I don't succeed in understanding the why, how come rains with the sun and the serene sky? he should generally have covered the sky or I am wrong

Hi,No, a layer of FEW and a layer of BKN will not cover the sky.Hope this helps,JimActiveSky Supporthttp://www.hifisim.com/images/as2004proudsupporter.jpg

Thanks.. do I believe of to have understood that it doesn't depend on the configuration of AS but really from the correct metar?

From the data contained in the METAR!Hope this helps,JimActiveSky Supporthttp://www.hifisim.com/images/as2004proudsupporter.jpg