Latitude and Wind Speed
Wind speeds indicate that there were no active typhoons or hurricanes in the randomly selected cities because the wind speed records were below 74 mph. On the other hand, winds had more uniform speeds in cities located near the Equator and the speeds became more varied the farther north or south the cities were. In the Southern Hemisphere, the area around 40 and 50° latitude is known as the "Roaring Forties" because of gale force winds. But on this particular day, the wind was relatively weak, with only one city registering wind at around 34 mph. Near the Equator, the winds are typically calm because the air in here tend to go upwards, which causes low movement of air on the surface.
