A blizzards are snowstorms the last for a very long time with very strong winds and intense snowfall. You need three things to have a blizzard;cold air at the surface, lots of moisture, and lift. Warm air must rise over cold air.
When you a blizzard you will to have a temperature below freezing. And it has to be cold.
You need a wind speed of 35mp.
How snowflakes form?
Snowflakes are made of ice crystals. Each snowflake is six-sided and made of as many as 200 ice crystals. Snowflakes form in clouds where the temperature is below freezing. The ice crystals form around tiny bits of dirt that has been carried up into the atmosphere by the wind. As the snow crystals grow, they become heavier and fall toward the ground.
There was a massive snowfall in buffalo and about they got about 20 inches o snow and lots of people were stuck in there houses.
On November 11, 1940, a rapidly deepening low pressure system moved northeast from Kansas City, MO northeast through the Upper Mississippi River Valley and into the Upper Great Lakes. This low pressure area produced the lowest pressure reading ever recorded up to this time at Charles City, IA (28.92 inches), La Crosse, WI (28.72 inches), and Duluth, MN (28.66 inches).