"Thirty telephone poles weigh"... What are the causes and risks of "fat habits"?

Construction (light, dry snow) produced at -20℃ to -10℃

Wet snow (heavy, wet snow) produced at -10℃ to 0℃

The Korea Meteorological Administration introduced a forecast for 'snow weight' since last year.

[Anchor]
The heavy snow was particularly wet and the snow crystals became fat, causing collapse damage everywhere.

Reporter Jang Ah-young analyzed why the habit theory occurred and how dangerous it was.

[Reporter]
The sleek star-shaped snowflakes we commonly know are light, dry snow, 'construction', which is usually made between minus 10 and minus 20 degrees Celsius.

Wet snow, which occurs in relatively less cold weather above minus 10 degrees Celsius, is a form of fattening due to water vapor tangled in snow crystals.

Usually, 1mm of rain is about 1.5cm when it snows,
The snow yesterday (27th), when the temperature of
was close to 0 degrees Celsius, was a "wet snow" with less than 1cm of snow per 1mm of precipitation.

[Kong Sang-min / Meteorological Agency Forecast Analysis: These two are divided according to temperature. On the 27th, the temperature was a little high. Therefore, the water equivalent ratio (snowfall compared to precipitation) was about 10 or less.]

Humidity is much heavier than construction.

If 1m of snow accumulates in 1㎡, the construction is about 150kg, but the weight of the wet snow is more than twice that.

If 50cm of wet snow accumulates in a greenhouse, it can weigh up to 30 tons.

That means there are two 15-ton trucks or 30 1-ton electric poles.

[Ban Ki-sung / YTN Disaster Advisory Committee: In the case of construction, if you just sweep it with a broom, it gets swept away, but in the case of habitual rumors, it remains the same. So it's very difficult to remove snow on the roof or in a greenhouse. It's very heavy, and it clumps up well, and then melts at the bottom. It has the characteristic of freezing as it is when it melts.

In 2022, the Korea Meteorological Administration introduced a "snow weight" forecast since December last year after a series of damage in Jeollabuk-do, including the collapse of greenhouses due to more than 60cm of wet snow.

The snow this time has been concentrated in the metropolitan area and inland Chungcheong Province, deflecting Honam, Gangwon, and the east coast of North Gyeongsang Province, where snow weight forecasts were first introduced due to heavy snow, but
The
weather service has included snow weight in its forecast, emphasizing 'heavy snow' several times.

I'm YTN's Jang Ayoung.


Video editing: Park Jung-ran
Design: Jeon Wirin