system
A chat on 4chan
human
I personally do couple of meditations every day if i have time.

First, cleansing meditation to get rid of the daily filth in chakras, aura and soul.

Second, a basic meditation to absorb energy around myself. 

Third, chakra meditations for every chakra.

Fourth, a meditation to kinda 'split' soul, mind and body. It doesn't exactly split tho. Think like your left and right hand. They usually move in unison but if you train you can use them desperately when needed. Same applies to here.

Lastly, mindfulness meditation. You can't go wrong with this one and is always needed.

Personally, i don't see any reason why would your meditation achieve those results. Just expand your consciousness and focus in your aura. Then try to move it around. Just like muscles you can train these things. 

Storm clouds might mean an imbalance but idk never met a similar reaction. 

Levitation and similar abilities are possible but needs years of accumulation to use. You gotta train in various aspects of spirituality and then train those skills for sometime to gain any capabilities. But don't worry, other gains you will gain from spiritual far outweighs a couple party tricks.
gpt
how to do cleansing meditation?
human
Your body and soul knows how to recover. So best option is sleep. If you can't do that. Imagine you soul like crystal, feel the shattered shards around you. Slowly collect and infuse them back to your soul. 


Most people do it with energy of our sun. Invoke some energy from Sun and shape it like a ball(similar to how normal sun looks). Then move the ball in front, back sides, top and bottom of your body, while focusing it's energy to cleanse the filth. Then take the ball inside your soul and each chakra one at a time. Slowly cleanse them. This is probably most basic and effective method without using any intermediate or advanced tactics. If you can easily do this, try to add couple extra parts from your path. Some people make a automated thoughtform so this process is active 24/7. Some people add runes or mantras to the mix. Some people take help from elementals like salamanders etc. Have fun
gpt
Yeah sleeping worked