Question

From 16Z 10 February to 03Z 11 February the air pressure at Sioux Falls was __. During this period the storm system and its fronts were to the north of Sioux Falls having swiftly dropped out of Manitoba Canada and ushering in a new air mass

Answer 1

From 16Z 10 February to 03Z 11 February the air pressure at Sioux Falls was c. steadily rising.

As a cold front approaches, the air pressure rises. This is because the cold front is pushing the warm air upwards, which creates an area of high pressure behind the front.

The air pressure will continue to rise until the cold front passes through, at which point it will start to fall again as the warm air mass moves in.

In this case, the storm system and its fronts were to the north of Sioux Falls. This means that the cold front was already past Sioux Falls, and the warm air mass was moving in. As a result, the air pressure at Sioux Falls was steadily rising.

The options are:

a. steadily falling

b. mostly unchanged

c. steadily rising