Hail
Analysis
DW-D
2017.05.11
Weather Charts
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Sunchang, Jangsu, Namwon, Jeongeup in North Jeolla Province, for about 10 minutes from 6 a.m.
500 hPa
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Cold Air Advection type.
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Considering the fact that the time of outbreak of hail is 6 a.m., it is estimated that the low pressure that exists in the east of Korea may have been over Korea during the hail.
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-15 degrees celsius passes toward the southern part of Korea and the location is lower than 15 degrees.
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Cold advection
850 hPa
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Just like the case of 500hPa, it is estimated that there was a low pressure with a cold core three hours prior to the time on the weather map.
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In addition, a very big temperature gradient created unstable air as it passed to the northern region of the Korean Peninsula.
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About 30 degrees difference with the temperature at 500hPa.
Surface
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Jet streak stretches over the Korean Peninsula, and it means there is strong wind at the upper floor.
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Low pressure is passing the east side of Korea.
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Significant temperature difference from 500hPa. It is above 40 degrees Celsius, which means unstable air.