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thunderstorm microburst (Left) The air that forms the microburst is initially “dammed” aloft by the strength of the storm's updraft then cascades downward in a high-velocity, narrow column (less than 4 km, or 2.5 miles, in diameter). (Right, inset) Microbursts are very dangerous to aircraft and can create great damage on the ground.
- Thermal Mountain Effect
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- Downdraft
In thunderstorm: Isolated thunderstorms …and ice becomes...
- Atmospheric Turbulence
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- Movement of Thunderstorms
Thunderstorm - Updrafts, Downdrafts, Air Masses: The motion...
- Thermal Mountain Effect
- The Developing Stage
- The Mature Stage
- The Dissipating Stage
When warm, moist air moves upward in an updraft, puffy cumulus clouds may form in the atmosphere. The moisture in the air condenses into water droplets as it rises. The cloud will continue to grow as long as warm air from below continues to rise. There are several ways that an updraft of warm moist air can form. Sometimes air is forced up the side ...
As the cumulus cloud continues to grow, the tiny water droplets within it grow larger as more water from the rising air is added to the droplets. The cloud starts to look dark and gray as more water is added to it, and the growing droplets that make up the cloud become heavy. Raindrops start to fall through the cloud when the rising air can no long...
When the downdrafts in the cloud become stronger than the updrafts, the storm starts to weaken. Since warm moist air can no longer rise, cloud droplets can no longer form. The storm dies out with light rain as the cloud disappears from bottom to top. The whole process takes about one hour for an ordinary thunderstorm. Severe thunderstorms like supe...
Oct 12, 2024 · Thunderstorm - Updrafts, Downdrafts, Air Masses: The motion of a thunderstorm across the land is determined primarily by the interactions of its updrafts and downdrafts with steering winds in the middle layers of the atmosphere in which the storm develops. The speed of isolated storms is typically about 20 km (12 miles) per hour, but some storms move much faster. In extreme circumstances, a ...
Thunderstorms have three stages in their life cycle: The developing stage, the mature stage, and the dissipating stage. The developing stage of a thunderstorm is marked by a cumulus cloud that is being pushed upward by a rising column of air (updraft). The cumulus cloud soon looks like a tower (called towering cumulus) as the updraft continues ...
A violent thunderstorm having a rotating updraft and persisting for hours is called a supercell storm (Figs. 14.3 & 14.4). Its downdraft and surface features (Fig 14.18, a duplicate of Fig. 14.4b) are organized in a way to trigger new thunderstorms nearby along a flanking line , and then to entrain these incipient updrafts (cumulus congestus clouds) into the main supercell updraft to give it ...
If thunderstorms are triggered, then larger CAPE indicates greater instability, stronger updrafts, and a chance for more violent thunderstorms. It is a useful but not perfect forecast tool, as demonstrated by the lack of statistical sharpness (Figs. 14.42, & 14.44).
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May 9, 2023 · Updrafts, and therefore new cells, continually re-form at the leading edge of the system, with rain and hail following behind. Individual thunderstorm updrafts and downdrafts along the line can become quite strong, resulting in episodes of large hail and strong outflow winds that move rapidly ahead of the system.
