2023-11-05 08:53:32
Hokuriku After the three-day weekend, there is a risk of rough weather due to the rapid development of a low pressure system Unusually high temperatures due to the Foehn phenomenon
November 05, 2023 17:53
After the holidays, a low pressure system accompanied by a front will rapidly develop over the Primorye region. Unusually warm air for this time of year will flow toward fronts and low pressure systems. Due to stronger southerly winds and the effects of the Fohn phenomenon, temperatures will be unusually high for November. Additionally, a cold front will pass through the Hokuriku region from late night on the 6th (Monday) to mid-morning on the 7th (Tuesday). Be careful of strong rain and lightning strikes in a short period of time. There are likely to be places along the coast where waves will rise rapidly following the front passes. Please check the latest weather and traffic information from time to time as there is a risk of major transportation disruptions.
Temperatures will rise on the 5th (Sunday) as well, with many summer spots around Fukui
Today, the 5th (Sunday), the front that had been stationary near the Hokuriku region weakened, and the day was largely sunny with plenty of sunshine in many places. In addition, as warm air from late September flowed into the sky, temperatures rose mainly in Fukui Prefecture, making it a summer day in some places.
In Katsuyama, Fukui Prefecture, the temperature was 26.3 degrees, the highest for November since statistics began, and in Komatsu, Ishikawa Prefecture, it was the third consecutive summer day. In Komatsu, the previous record for the most consecutive and most summer days in November was two days, and these two records were broken. In addition, the maximum temperature was 4 to 8 degrees above normal in many places, making it unseasonably warm.
A low pressure system rapidly develops on the 6th (Monday). Record high temperatures? Be careful of strong winds from the south.
On the 6th (Monday), a low-pressure system accompanied by a front will rapidly develop and move toward Primorye. Warm air at around +15 degrees Celsius at an altitude of around 1,500 meters will flow into the Hokuriku region toward the front and low pressure system. This will be stronger than the 3rd (Friday/holiday), which had a record high temperature for November, and will be as warm as early September. In addition, southerly winds will increase toward the front and low pressure system. In the Hokuriku region, the wind will come over the mountains, adding to the effect of the Fohn phenomenon. Furthermore, it is predicted that there will be many areas with sunny skies mainly in the morning, so the elements are in place for the temperature to rise.
The highest temperature on the 6th (Monday) will be 27 degrees in Toyama and Kanazawa, 26 degrees in Fukui, and 25 degrees in Niigata, so it is expected to be a summer day in all parts of the country. If summer days come, Niigata and Toyama will set a new record for the number of summer days in November, and Kanazawa and Fukui will also tie for the highest number of summer days ever. Also, depending on the way the sun shines and the wind speed, the temperature in Toyama may rise more than expected, approaching the height of summer.
In addition, the southerly winds will strengthen, and there is a risk of locally extremely strong winds, especially in areas along rivers that flow north to south. Maximum instantaneous wind speeds may reach 20 to 30 meters. The winds will be strong enough to disrupt transportation, and drivers should be careful when driving on bridges over rivers that flow north and south, as it is easy to lose control of the steering wheel. Please keep checking for the latest weather and traffic information.
A cold front will pass from late on the night of the 6th (Monday) to the morning of the 7th (Tuesday), with the possibility of warning-level heavy rain.
A cold front extending from the low pressure system will pass through the Hokuriku region from late night on the 6th (Monday) to early morning on the 7th. Atmospheric conditions will be very unstable as warm, humid air moves toward the front.
Heavy rain is expected to fall over a short period of time, especially when the front passes, with localized areas expected to see heavy rain of over 30mm per hour. This rain falls like an overturned bucket, making driving dangerous. In Ishikawa Prefecture, developed rain clouds associated with cold fronts are likely to flow in from the sea, and there is a risk of warning-level heavy rain.
Although the period of heavy rain will not be long, please be careful of flooding of low-lying land and sudden rise in water levels of rivers and irrigation canals. There is a possibility that the underpass may be flooded, so please be careful when driving.
After the front passes, westerly winds will strengthen, and waves will rise rapidly, leading to warning-level high waves.
After the cold front passes through until the 7th (Tuesday), westerly winds will become stronger. The maximum wind speed is expected to be over 15 meters mainly in the coastal areas of Niigata and Ishikawa, and the maximum instantaneous wind speed on land is expected to be 35 meters in Ishikawa, 30 meters in Niigata, and 25 meters in Toyama and Fukui. If the low-pressure system develops more than expected, there is a risk of it becoming a warning-level storm.
Also, before the cold front passes, the waves are low in coastal areas due to southerly winds (off shore winds in most areas), but following the cold front passes, the waves change to westerly winds (head shore winds mainly in Ishikawa and Niigata prefectures). , the waves may rise rapidly and become a barge or large barge. The predicted wave height is expected to be 6 meters in Niigata and Ishikawa, and there is a risk of warning-level waves. Even in Fukui, it will be 4 meters. In addition, swells are expected in all areas on the 7th (Tuesday). Please pay close attention to the latest information as there is a risk that shipping and other services may be significantly disrupted.
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