[ad_1]
2020/11/09 04:36 Weather news
Today, after 1 p.m. on Monday, November 9, the Aomori Local Weather Observatory announced that it had observed the first snowfall. It is the first snow observation 4 days later than normal.
It was the first snow announcement this winter among the Honshu weather stations.
(Additional) After 4 o’clock, the Morioka Local Weather Observatory in Iwate Prefecture announced the observation of the first snowfall. It is the first snowfall that comes 3 days later than usual.
When there is precipitation, the type of precipitation (rain, snow, spill) is determined from the observed values of temperature and humidity. Even at the same temperature, the lower the humidity, the easier it is to fall as snow.
In Aomori, precipitation was observed intermittently after 9:00 p.m. last night, and although the humidity reached 74%, the temperature dropped to the level of 3 ° C at 1 o’clock, and it appears that it was analyzed as a spill or snow. Mizore refers to “precipitation with a mixture of rain and snow”, so it fits the definition of first snow.
According to the Meteorological Agency, continuous observation is possible unlike conventional visual observation by humans, so when it comes to automatic observation, the “first snow” isTendency to be faster… apparently … The mean value has been updated to the mean value for automatic observation.
On the other hand, since last winter’s observation was a visual observation, although it is a “observation 5 days earlier than last season,” a simple comparison cannot be made.
The cold air inflow this time will continue until around Wednesday the 11th, and it is expected that it will mainly snow in Hokkaido and the area on the side of the Sea of Japan in the northern part of Tohoku. Be careful of deterioration of the road surface due to snowfall and freezing of the road surface.
