2023-10-03 22:05:00
2023/10/04 07:05 Weather News
As of 6:00 a.m. on the 4th (Wednesday), Typhoon No. 14 (Koinu), a large and powerful typhoon, is moving northwest over the sea south of Okinawa.
The Sakishima Islands are in a strong wind region with wind speeds of 15 m/s or more, and the maximum instantaneous wind speed by 7:00 was observed at Ishigaki Island at 16.2 m/s and at Yonaguni Island at 18.5 m/s. It is expected to maintain its strong strength and move westward over the sea south of the Sakishima Islands until the 5th (Thursday).
▼Typhoon No.14 October 4th (Wednesday) 6:00 am
Size class large
strength class strong
Movement northwest 10 km/h
Central pressure 955 hPa
Maximum wind speed 40 m/s (near the center)
Maximum instantaneous wind speed 60 m/s
» Latest typhoon information
Sakishima Islands is on alert for stormy weather including high waves and strong winds
Wind forecast 4th (Wednesday) 9am
Today, when the typhoon is closest, the winds will be stronger, with an average speed of around 20m/s, and strong winds that can exceed 30m/s at times, so we need to be on guard.In addition, the rain will be added to the mix, so it will be raining sideways, so try to avoid going out as much as possible during the peak wind hours.
» Radar Wind Mode (Wind Flow)
Big boat at sea
Wave forecast 4th (Wednesday) 9am
The waves are high at sea. As of 6:40 a.m., a wave warning has been issued for the Miyakojima, Ishigakijima, and Yonagunijima regions.In the waters near the Sakishima Islands, waves are expected to be 6 to 8 meters high. Even in the waters near the main island of Okinawa, which is far from the center of the typhoon, waves can be as high as 3 to 4 meters, so you can’t let your guard down.
High waves will continue even following the center of the typhoon leaves on the 5th (Thursday), so vigilance is required at sea and on the coast.
Each thin line in this diagram represents the result of a simulation of the course calculated by meteorological agencies around the world. These members are obtained through the process of ensemble forecasting, and are shown here to illustrate that there is a wide range of possible paths.
Most members have the same tendency to move northeast, but some members change course to the east or north from around the coast of Tokaido, suggesting that their movements may become complicated.
According to the Japan Meteorological Agency’s typhoon forecast, the size of the forecast circle where there is a 70% probability that the center will be in the center is 210 km as of 21:00 on the 7th (Thursday), 48 hours into the future. This is the largest 48-hour forecast circle for a typhoon to date, and it can be said that the uncertainty in the path is extremely large. Note that the size of the forecast circle has nothing to do with the strength or size of the typhoon.
If it approaches Honshu, the impact may be greater, so please pay close attention to future information.
Probability of entering the storm area of a typhoon
The following are the prefectural forecast areas where the probability of entering the typhoon’s storm region within the next 5 days is 3% or higher. (Japan Meteorological Agency)
Okinawa main island region
Northern/central southern main island 1%
Kerama/Aguni Islands 1%
Kumejima 2%
Miyakojima region 17%
Yaeyama region
Ishigaki Island region 28%
Yonagunijima region 24%
The number of typhoons in September is the lowest on record
Number of typhoons in a normal year
This is the second typhoon to occur in September, with the only occurrence being Typhoon No. 13 on the 5th (Tuesday). This is the lowest number of typhoons in September, equaling 1951, 1973, and 1983.Although October is a time when there are fewer typhoons, there are still three or more that occur in a normal year. There are still many typhoons affecting the Japanese archipelago, so please review your typhoon and heavy rain countermeasures.
» Radar satellite cloud image mode
typhoon name
There are 140 typhoon names proposed by member countries of the international organization “Typhoon Commission,” and they are assigned in the order in which they occur.
The name “Koinu” for Typhoon No. 14 was proposed by Japan, and the name comes from the constellation “Canis Minor,” a puppy dog.
» Radar typhoon mode
Reference materials etc.
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