Hail Phenomenon in Yogyakarta and Sleman, Here's What BMKG Explained
Hail at several points in the city of Yogyakarta was confirmed by the Meteorology, Climatology and Geophysics Department (BMKG).
He explained that hail occurs because of a warm, humid and unstable surface on the earth's surface.
The effect of intensive Earth heating due to solar radiation will lift air masses into the atmosphere and then experience cooling.
"After condensation occurs, water droplets will form which appear as cumulonimbus (Cb) clouds. Due to the strong upward push energy during the convection process, the cloud tops are so high that they reach the freezing level. This freezing level forms ice crystals with a large enough size," said Reny.
When the clouds are ripe and unable to withstand the weight of the water vapor, heavy rain and ice occur.
This falling ice rubs against the air so that it melts and when it reaches the ground surface its size is smaller.
There is still a high potential for hail to occur during the rainy season and also during the transition period.
Reny added, hail can occur in sub-tropical and tropical areas and can occur in urban areas and highlands.
"If there is a Cb cloud, then the dynamic conditions of the atmosphere are favorable, then hail can occur," she said
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