At 16:05 central time, a Cessna 150K flipped over in a crosswind while taxiing to runway 31 at Minot International Airport. The instructor and student were not injured. The instructor said they were taxiing the airplane when slush was encountered on the left side. That, coupled with a sudden increase in wind speed – gust, made the airplane skid to the left. The nose sank into a snow bank. As they were preparing to exit the airplane, the instructor pilot said, The nose submerged in further and the tail moved upwards progressively till the aircraft laid upside down. Winds were reported at 24 knots.