"And in the morning, it will be foul weather to day: for the sky is red and lowring (gloomy). O ye hypocrites, ye can discern the face of the sky; but can ye not discern the signs of the times." (Matthew 16:3)
There's a species of "procellous" Sea birds that congregate in great numbers during storms, just so you know.
I remember as a kid, scanning the Summer sky for any trace of cloud, not wanting my fun and excitement and freedom to be interrupted by rain or storm. My Summers usually went off without a hitch, but life is not necessarily so sunny. Sometimes we need rain. It's the natural order of things.
"And it came to pass at the seventh time, that he said, Behold there ariseth a little cloud out of the sea, like a man's hand..." (1 Kings 18:44a) This verse speaks of Elijah, and of his servant's scouting for rain. Rain that would allay the severe drought inflicting the whole country.
So, procellous essentially means stormy, though it centers around the sea. The stormy sea, the procellous sea. God is God, and we find this out, whether our life is smooth sailing, or rough waters. Though many people won't know the depth of God's love until into their life, a little rain falls. I would have to say this is mainly the reason God allows storms in a person's life. When we see the blue sky cloud over and occlude the sun, what do we do? Do we panic? God forbid it should start raining on our parades and picnics. I'm not trying to sound like a killjoy here, and all I'm using are allusions. Thing is, for ecology to run smoothly, rain is essential. If all we had were days of sunshine and fair skies, we'd eventually starve. Also the natural order of things.
"That ye may be the children of your Father which is in Heaven: for He maketh his sun to rise on the evil and on the good, and sendeth His rain on the just and on the unjust." (Matthew 5:45, emphasis mine)
It's calm in the eye of a storm. Centering ourselves in God's presence will bring us the peace and ease and hope needed to weather the storms of life. And the best and most efficient way to invite God's presence into your storm is to worship and praise Him: "But thou art holy, O Thou that inhabitest the praises of Israel." (Psalm 22:3, emphasis mine) This might sound like too simplistic a prognosis to shorten our time on the stormy seas, but what else can we do when waiting out the weather?
Another reason God allows storms is for us to experience a touch of the suffering of Jesus. Western mores purport a life devoid of anything untoward and only glassy seas and mellow skies for the duration. This is altogether unlike the life Jesus told us we'd have upon believing in Him: "In the world ye shall have tribulation: but be of good cheer; I have overcome the world." (John 16:33) Paul listed it as one of the top four desires he had for his life. "That I may know Him, and the power of His resurrection, and the fellowship of His sufferings, being made conformable unto His death." (Philippians 3:10, emphasis mine) Don't be afraid when the storms arise.
"The Lord is slow to anger, and great in power, and will not at all acquit the wicked: the Lord hath His way in the whirlwind and in the storm, and the clouds are the dust of His feet." (Nahum 1:3)
So hang in there. Whatever reason there may be (trust me, there is one and it may not be anything you'd expect) for the procellous seas and skies of your life, God delights in giving you the informtion you require. The "treasures of wisdom and knowledge". (Colossians 2:3, emphasis mine)
"O thou afflicted, tossed with tempest, and not comforted, behold I will lay thy stones with fair colours, and lay thy foundations with sapphires." (Isaiah 54:11)
Like sunken treasure!