Weather Fronts

Cold Front
When there is a cold front coming in, the cold air travels forward. When the cold air collides with the warm air in the area, that warm air is pushed up. Because the two temperatures collided, storms begin as the cold front continues. And so the cold temperature keeps traveling and bring along the storms.
Warm Front
When there is a warm front the warm air travels in the direction of the cold air. When the warm air reaches the cold air, it starts to push the cold air away but it also curves upward. And when the warn and the cold air collide storms begin as the cold air continues to be pushed away form the warm air.
Stationary Front
When there is a stationary front the warm air and the cold air both travel toward each other with equal force. And since they are both equal they cannot take "control". So they are stationary and cannot move. So where they both meet, a storm occurs.
Occluded Front
When there is an occluded front, warm air is caught between two cold air situations. When one of the cold fronts starts to get closer to the other cold front and the warm air then is pushed upward above the to cold fronts. As the cold air front gets closer to the other cold air front they mix causing the air to mix and the surface to cool.
Which type of front occurred this week to bring the cold weather and then snow?
This week I believe that there was a cold front that caused the colder air and then the snow.