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  2. Vertical draft - Wikipedia

    en.wikipedia.org/wiki/Vertical_draft

    Vertical drafts, known as updrafts or downdrafts, are localized regions of warm or cool air that move vertically. A mass of warm air will typically be less dense than the surrounding region, and so will rise until it reaches air that is either warmer or less dense than itself.

  3. Hurricane dynamics and cloud microphysics - Wikipedia

    en.wikipedia.org/wiki/Hurricane_dynamics_and...

    Rango and Hobbs (2005) obtained in situ measurements of tropical convective systems. They found that the liquid water content was below adiabatic values. This was true even in newly formed updrafts, suggesting that collision-coalescence and/or entrainment mixing are efficient methods for the removal of liquid water.

  4. Hail - Wikipedia

    en.wikipedia.org/wiki/Hail

    Hail forms in strong thunderstorm clouds, particularly those with intense updrafts, high liquid-water content, great vertical extent, large water droplets, and where a good portion of the cloud layer is below freezing (0 °C; 32 °F). [4] These types of strong updrafts can also indicate the presence of a tornado. [11]

  5. Squall - Wikipedia

    en.wikipedia.org/wiki/Squall

    The leading area of a squall line is composed primarily of multiple updrafts, or singular regions of an updraft, rising from ground level to the highest extensions of the troposphere, condensing water and building a dark, ominous cloud to one with a noticeable overshooting top and anvil (thanks to synoptic scale winds).

  6. Squall line - Wikipedia

    en.wikipedia.org/wiki/Squall_line

    The leading area of a squall line is composed primarily of multiple updrafts, or singular regions of an updraft, rising from ground level to the highest extensions of the troposphere, condensing water and building a dark, ominous cloud to one with a noticeable overshooting top and anvil (thanks to synoptic scale winds).

  7. Cloud physics - Wikipedia

    en.wikipedia.org/wiki/Cloud_physics

    Atmospheric pressure decreases with altitude, so the rising air expands in a process that expends energy and causes the air to cool, which makes water vapor condense into cloud. [8] Water vapor in saturated air is normally attracted to condensation nuclei such as dust and salt particles that are small enough to be held aloft by normal ...

  8. Severe weather - Wikipedia

    en.wikipedia.org/wiki/Severe_weather

    The updrafts and downdrafts within cumulonimbus clouds cause water molecules to freeze and solidify, creating hailstones and other forms of solid precipitation. [60] Due to their larger density, these hailstones become heavy enough to overcome the density of the cloud and fall towards the ground.

  9. Mesocyclone - Wikipedia

    en.wikipedia.org/wiki/Mesocyclone

    The second method occurs during a supercell thunderstorm, in updrafts within the storm. When winds intensify, the force released can cause the updrafts to rotate. This rotating updraft is known as a mesocyclone. [8] For a tornado to form in this manner, a rear-flank downdraft enters the center of the mesocyclone from the back. Cold air, being ...