no it's not possible to catch rayquaza in silver but if it is a hacked version you can catch it
It lives in the clouds
in the top of the kanto radio tower.
the same as Pokemon emerald but you need first to get de Pokemon league if you don't know where he is on Pokemon emerald. his tower is on route 230 by walls
I think you have to go to Raquayza's tower and push "a" in front of him. Then he screams, and fly's away. Then there's a cut seen of Raquayza stopping the fight against the two other red and blu things. Then you battle the leader.
it took me a while to do it, get dragonite, ho-oh and other rare or strong pokemon. when you beat him you can catch groudon but not kyogre groudon reveals itself to people with souls of silver, kyogre only shows itself to people who have hearts of gold. :) you need emerald or sapphire if you want kyogre, when you get them both you can get Raquayza
Darkrai Deoxys Palkia Regice Registeel regirock Articuno Moltres Zapdos Raquayza Lucario Uxie Unown Entei Raikou Suicune could be legendarys or pokemon with good stats
204.45.29.54
After catching Kyogre, obtain a Groudon from a friend with Pokemon SoulSilver. You only need the Groudon temporarily. Talk to Professor Oak with both in your party, and Professor Oak will give you the Jade Orb to catch Raquayza.
Pokemon cannot learn Yawn in Pokemon Silver.
You can capture rayquaza at the top of sky pillar.
Lugia
you can get celebi from a Pokemon silver event