Typhoon Jongdari Races Northward: Caution Urged for Marine Activities as Coastal Effects Persist

2024/08/20 07:00 Weather News

As of 6 AM on August 20 (Tuesday), Typhoon No. 9 (Jongdari) is swiftly moving north in the East China Sea.

▼ Typhoon No. 9 August 20 (Tuesday) 6 AM
　Current location　　East China Sea
　Size class　　　　／／
　Strength class　　　／／
　Movement　　　　　North at 30 km/h
　Central pressure　　　998 hPa
　Maximum wind speed　　20 m/s (near the center)
　Maximum gust speed　　 30 m/s
» Latest typhoon information

Caution for Marine Leisure

Typhoon No. 9 has moved away from Okinawa, and the active clouds have moved off to the East China Sea. It has also moved out of the strong wind area with winds of 15 m/s or more. It is expected to move north to the Yellow Sea and then weaken to a tropical depression near the Korean Peninsula.

There is no direct impact on Kyushu or Honshu, but high waves accompanied by swells will reach Okinawa and western Japan, so caution is necessary for marine leisure due to rip currents, etc.
» Radar Wind Mode

Reference: Numerical simulation results of the trajectory calculated by meteorological agencies around the world

The thin lines in this diagram represent the results of numerical simulations calculated by meteorological agencies around the world. These are derived from the ensemble forecasting method and are displayed to convey the considerable width of potential trajectories.

When comparing these members, it can be seen that there is a general tendency to move northward east of Japan, but there is dispersion between forecasts that diverge northeast and those heading towards Honshu. If the path shifts westward, there is a possibility of wind and rain impacts around the three-day weekend, so it is necessary to pay attention to changes in forecasts. It is expected that the error will decrease over time, so please stay tuned for further information.

Probability of entering the typhoon’s storm zone

The forecast areas with a probability of entering the typhoon’s storm zone of 3% or more within the next five days are as follows (Japan Meteorological Agency):
　Amami region　　　2 %
　Okinawa main island region　13 %
　Miyako Island region　54 %
　Yaeyama region　　72 %

Fifth Typhoon of the Month

Average annual number of typhoons

The occurrence of typhoons is the first since Typhoon No. 8 formed on the 13th (Tuesday), six days ago. This is the fifth typhoon to form this month.

The average number of typhoon occurrences in August is 5.7, making it the time of year when typhoons are most frequent. This year, five typhoons have formed in the last two weeks, indicating a pace that is about average or above.

As we transition from summer to autumn, it is expected that more typhoons will approach near Honshu, marking the onset of the full-fledged typhoon season. Please prepare for typhoon and heavy rain measures accordingly.
» Radar Satellite Cloud Image Mode

Name of the Typhoon

The names of typhoons are proposed by member countries of the international organization “Typhoon Committee,” with 140 names pre-prepared and assigned in the order they occur.

Typhoon No. 9 is named “Jongdari” (종다리), a name proposed by North Korea (Democratic People’s Republic of Korea), derived from the Korean word for “skylark.”
» Radar Typhoon Mode

Reference Material, etc.