There was no warning of this incredibly cold winter.
That's because this hasn't been an incredibly cold winter. Who told you such a stupid thing, and why did you believe it?
Back in reality, December 2019 was way warmer than usual. January 2019 was a little warmer than usual. "Incredibly cold" is crazy talk.
In RealityLand, solar activity has slowed. Solar and Volcanic activity are the two real causes of global climate change. And we're in for a long cold spell.
Given that you posted a faked temperature chart, you're clearly not a resident of Reality Land.
Your cult has been predicting the oncoming ice age for over 40 years running now. Your HolyIceAge never arrives, but that never matters to your devout Ice Age Cult. Each time icy armageddon fails to materialize, you just push the date back a little more, like every other doomsday cult.