Yes I did notice they spray chemtrails a day or two before they announce rain but in all the cases I've noticed the rain actually did come.
And that made me think there was a correlation there.
So it's surprising to me when you say that in your case the chemtrails actually stop the rain from coming.
Maybe chemtrails (different mix) have the ability to do both - cause rain or prevent it.
You are right, the Aluminium aerosol in Chemtrails is used in conjunction with HAARP to move clouds ( rain ) around. So they can create either floods or droughts in any area ,at will , to suit their objectives. In agricultural areas, where they want to stop cropping and livestock production, most often it will be drought. I often travel through rural areas where agriculture is the main industry, and there are chemtrails cris-crossing the sky - lots of them. They are sprayed there usually just before a weather front with rain comes across so they can push the clouds away. In your case, i guess the Chemtrails are sprayed to keep the rain there, not push it away.
Is it possible chemtrails themselves induce rain or storms?