Clouds

I hate dark clouds, i was from 4000ft descend to 1500ft then maintain at 1500ft fly towards KB town. At that time big dark clouds was above KB town, my eyes concentrating on airfield but my aircraft was flying towards the big dark cloud. Then i maintain Instrument flying for more than 1 minute. Then suddenly the altitude indicator decreasing at very fast rate from 1500ft to 1000ft. During that time, i make sure my aircraft in straight & level but still descending..WTF! is this downdraft?! yeah think so.. Then without any thinking i just put full power and climb with stall horn keep on sounding me..(haha cuak punye pasal) after a while i saw the airport..fuhh! Then, APAQ 1758, clear to land!

20 mins after take off, from gual periuk to ayer lanas..