What are the cases of atmospheric instability, how do they arise, their nature and their effects? the details

<p style=";text-align:left;direction:ltr"><strong>Arab Weather -</strong> We often hear or read in the weather forecasts about the kingdom or region being affected by a state of atmospheric instability, and many of us think that it is an air depression and regular rains will come to many regions, but the truth is that the cases of atmospheric instability are completely different from the depressions in many ways. On them through the <strong>report.</strong></p><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"><br /></p><h2 style=";text-align:left;direction:ltr"> How do atmospheric instabilities arise?</h2><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> Instability arises when cold air in the upper atmosphere meets with warmer or hotter air in the lower atmosphere and that convergence coincides with the presence of sufficient moisture in the atmosphere, especially the structural layers, and when this meeting occurs over a certain area, it is formed What is known as cumulonimbus thunderstorms, they grow vertically in the atmospheric layers, and these cases are characterized by being of a local character, meaning that clouds arise internally, and rain clouds dissolve in the same affected area or extend to other areas and then vanish.</p><p style=";text-align:left;direction:ltr"></p><h2 style=";text-align:left;direction:ltr"><br /><br /> What are the characteristics of atmospheric instability?</h2><p style=";text-align:left;direction:ltr"><br /> Cases of atmospheric instability are characterized by irregularity in precipitation, as rain may fall in a region and a nearby area that does not witness any rain or witness light rain that I do not remember, and the weather may be sunny and clear, and it is characterized by lack of comprehensiveness in the distribution of rain or even its severity. Rain due to the irregularity in the distribution of rain, and it is difficult for forecasters to accurately determine the locations of precipitation, and these cases are complex and come on the ground in violation, whether in development or in retreat. Narrow geographical foci, causing torrents and floods.</p><p style=";text-align:left;direction:ltr"></p><h2 style=";text-align:left;direction:ltr"><br /> What are the weather phenomena that are associated with instability?</h2><p style=";text-align:left;direction:ltr"></p><p style=";text-align:left;direction:ltr"> Cases of atmospheric instability are associated with several weather phenomena, and these phenomena include cases of different intensity, including strong, medium and weak. Perhaps the most prominent accompanying weather phenomena are the following:</p><p style=";text-align:left;direction:ltr"></p><h3 style=";text-align:left;direction:ltr"> 1 - Heavy rain.</h3><h3 style=";text-align:left;direction:ltr"> 2- Thunderstorms.</h3><h3 style=";text-align:left;direction:ltr"> 3- Downward (severe) winds.</h3><h3 style=";text-align:left;direction:ltr"> 4- The hail falls heavily and in large or different sizes.</h3><h3 style=";text-align:left;direction:ltr"> 5- Sandstorms or the occasional excitation of dense dust, especially if the activity of thunderstorms is over desert areas.</h3><h3 style=";text-align:left;direction:ltr"> 6- In rare cases, but it does get associated with snow over high mountain heights when there is adequate cooling.</h3>