During this time of the year, thunderstorms also can cause strong winds. Rain falling from a thunderstorm evaporates underneath the cloud, cooling the air beneath it. The air then rushes sideways resulting in strong winds. The Weather Guys. Skip to content. However, winds are not necessarily getting stronger with height. For some weather systems such as low level jet, winds are particularly strong at certain altitudes.
Besides, under gusty conditions associated with thunderstorms, winds near the ground can be much higher than those aloft. The Hong Kong Observatory had reminded people to take precautions against violent gusts in the Thunderstorm Warning. So, when pressure changes rapidly over a small distance, the pressure gradient force is large.
Strong winds almost always result from large pressure gradients. The Coriolis force pulls the wind to the right so that winds blow counterclockwise around lows and clockwise around highs in the Northern Hemisphere. So, if you put your back to the wind, lower pressure is to the left.
What is going on here? The main cause of wind is a little surprising. The gases that make up our atmosphere do interesting things as the temperatures change.
When gases warm up, the atoms and molecules move faster, spread out, and rise. When air is colder, the gases get slower and closer together. Colder air sinks. The sun warms up the air, but it does so unevenly.
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