Hokuriku’s Snowfall Forecast for Upcoming Winter, “Average Levels”

Hokuriku’s Snowfall Forecast for Upcoming Winter, “Average Levels”

2020-2021 Season, Meteorological Office’s Three-Month Forecast

On November 25th, the Niigata Local Meteorological Office released its three-month forecast, for December 2020 to February 2021, for the Hokuriku region, with snowfall and temperatures predicted to be “roughly at the yearly average levels”. A Fukui Local Meteorological Office associate cautioned, “We predict the cold atmosphere to enter the region from the latter half of December. Please carefully check the monthly and weekly weather forecasts.”

This winter, due to the influence of La Nina, the prevailing westerlies meander southbound while approaching the vicinity of Japan. Heavy snowfall will depend of whether or not the JPCZ (Japan sea Polar air mass Convergence Zone) takes form. The cold stream flowing from the Siberian region will split in two as it hits the mountain range within the Korean peninsula. The wind streams will then reconverge over the Japan Sea, into the JPCZ, creating snow-laden clouds in succession, leading to the plains near shorelines getting an increased level of snowfall, as characteristic with this phenomenon.

Within Fukui Prefecture, the average snowfall for each month are as follows:

[Fukui City]
December: 42 centimeters
January: 124 centimeters
February: 91 centimeters

[Tsuruga City]
December: 32 centimeters
January: 95 centimeters
February: 70 centimeters

A meteorological office associate expressed, “With the current forecast, it is difficult to consider that we will experience a winter as warm as last winter. We hope for everyone to take proper measures to prepare for the snowfall.”

Source: https://www.fukuishimbun.co.jp/articles/-/1212811

La Nina Appears, Heavy Snow in Fukui?

La Nina Appears, Heavy Snow in Fukui?

Tremendous Snowfall During Last Occurrence… Caution For What’s Ahead

During September, the Japan Meteorological Agency announced that La Nina, a phenomenon that brings about abnormal weather throughout the world, is expected to occur this year. The last occurrence of La Nina was during the autumn of 2017 until the spring of 2018, which was a factor connected to the record levels of heavy snow during February 2018 within Fukui Prefecture. Regarding the amount of snowfall for this winter, the Fukui Local Meteorological Office expressed, “It is almost certain that it will not be a warm winter. However, it is not accurate to say ‘La Nina = heavy snow’. There is no need for great concern, but we must be cautious.”

La Nina is a weather phenomenon where the sea surface temperature decreases across the equatorial Eastern Central Pacific Ocean, and increases around Indonesia and the Philippines. With a high chance of persisting through the winter, the Hokuriku region will likely see heavy rain or snow during the early winter season.

Such weather will lead to the prevailing westerlies over the vicinity of Japan to meander further south than in a regular year. The Siberian High will grow slightly stronger, stretching towards the southeast, making it easier for the cold air to flow into the west part of Japan, including into Fukui Prefecture.

However, on September 25th, the Niigata Local Meteorological Office reported that the winter season (December to February) within Hokuriku is predicted to see “roughly normal levels” of rain and snow. Heavy snowfall would depend on the formation of the “Japan sea Polar air mass Convergence Zone” (JPCZ). The cold stream flowing from the Siberian region will split in two as it hits the mountain ranges within the Korean peninsula. The streams will then reconverge over the Japan Sea, into the JPCZ, creating snow-laden clouds, one after another, leading to the plains along the shore receiving an increased level of snowfall, as is characteristic with this phenomenon.

A weather forecaster with the Fukui Local Meteorological Office, Komyo Nagai, expressed, “There are many factors which are difficult to predict, including how the cold air will travel in and if the JPCZ will spread over areas of Fukui Prefecture.” He continued, “Actually heading towards the winter season, we should pay attention to the forecasts and prepare accordingly.”

Source: https://www.fukuishimbun.co.jp/articles/-/1187155

Hokuriku Region, Including Fukui Prefecture, Enters Rainy Season

Hokuriku Region, Including Fukui Prefecture, Enters Rainy Season

Niigata Local Meteorological Office Report

On June 11th, the Niigata Local Meteorological Office reported that the Hokuriku region, which includes Fukui Prefecture, is believed to have entered its rainy season.

Source: https://www.fukuishimbun.co.jp/articles/-/1102900

A Large Snowfall for this Winter? Fukui’s Forecast

A Large Snowfall for this Winter? Fukui’s Forecast

The Niigata Local Meteorological Office Announces 3-Month Forecast

On November 24, the Niigata Local Meteorological Office published a 3-month forecast, for this December through February of 2020, for the Hokuriku region. According to the Fukui Local Meteorological Office, over the 3 month period, there is expected to be less snow compared to the average year.

The Fukui Local Meteorological Office reported that due to various factors, including global warming, and the high-altitude westerlies zigzagging northwards close to Japan, the effects of the cooler air will decrease. The low-pressure system of the North Pacific’s Aleutian Low will have a weaker effect on Japan’s neighbouring areas, leading to a prediction that the winter pressure pattern will not persist for a long time.

Through the period of last December through February of this year, the total amount of snowfall was 20 centimeters in December, 19 centimeters in January, and 3 centimeters in February; a meteorological associate had predicted, “There will probably be more snowfall than last winter.”

In addition, according to the 3-month forecast published by the Japan Meteorological Agency on the same day, the temperature across the country will be higher than normal during next January, resulting in a prediction of an average forecast for the following February. The areas along the Japan Sea, northern Japan (Hokkaido, Tohoku), eastern Japan (Kanto-Koshin, Hokuriku, Tokai), western Japan (Kinki, Chugoku, Shikoku, Kyushu), are all expected to have lower than average snowfall.

Source: https://www.fukuishimbun.co.jp/articles/-/980649