Typhoon Hinnamnor Larger Than the Korean Peninsula Approaches North on the Night of the 2nd "Strongest Impact from the 5th to 7th"

Night of the 1st: Rain expands from Jeju to southern regions on the 2nd
2nd-3rd: Jeju up to 300mm+, 100-200mm in many areas
Typhoon strongest impact from 5th to 7th, cumulative rainfall exceeding 500mm
Typhoon path uncertain after 5th, rainfall concentration areas may change

[Asia Economy Reporter Han Jinju] As Typhoon Hinnamnor moves northward from the night of the 2nd, heavy rain of up to 300mm is expected mainly on Jeju Island on the 2nd and 3rd. From the 5th to the 7th, when the typhoon is under its strongest influence, very strong winds and heavy rainfall are anticipated.

According to the Korea Meteorological Administration's (KMA) special briefing on the 1st, Typhoon Hinnamnor is expected to move northward through the Korea Strait from the night of the 2nd after stagnating over the sea east of Taiwan. It is expected to strengthen during the stagnation period and begin moving northward after passing the 30 degrees north latitude.

Typhoon Hinnamnor, the 11th typhoon of the year, is the largest and strongest typhoon affecting the Korean Peninsula this year. As of 3 p.m. on the 1st, Hinnamnor's central pressure is 920 hPa, and its maximum wind speed is 54 meters per second, classifying it as an 'ultra-powerful' typhoon. After the 5th, numerical forecast models show varying projections of the typhoon's path, making the uncertainty very high, and the KMA explains that it is too early to discuss whether it will make landfall or pass through the Korean Peninsula.

Forecaster Woo Jin-gyu explained, "Since the typhoon's size exceeds the scale of our country, there will be little change in the typhoon's area, and regardless of the path it takes, it is highly likely to have a significant impact on Korea," adding, "The central pressure is expected to remain around 915 hPa when the typhoon moves northward toward Korea."

Before the typhoon passes the 30 degrees north latitude, on the 2nd and 3rd, rain will fall mainly on Jeju Island and the southern coast. The rain cloud band is expected to form in a shape that is long east-west and narrow north-south, starting from Jeju Island on the afternoon of the 1st, expanding to the southern coast and southern regions on the 2nd, and possibly extending to the central regions on the 3rd and 4th. Expected rainfall amounts are 100 to 200mm on Jeju Island, with some areas exceeding 300mm, and 50 to 100mm along the southern coast of Jeollanam-do and the coastal areas of Gyeongsangnam-do. From the 2nd, 10 to 60mm of rain is expected in the southern part of Gyeongbuk, and from the 3rd, in Jeollanam-do and inland Gyeongsangnam-do.

From the 5th to the 7th, the period of direct influence from the typhoon, very heavy rain with hourly precipitation of 50 to 100mm is expected, and maximum instantaneous wind speeds of over 50 meters per second are anticipated mainly along the coast. Some areas may record cumulative rainfall exceeding 500mm from the 2nd to the 7th. Forecaster Woo said, "Numerical forecast models predict rainfall exceeding 700mm," adding, "While the degree of impact remains unchanged, the concentration area of rainfall may vary due to changes in the typhoon's path."

The time when Hinnamnor is closest to Jeju Island is expected to be between the 5th and 6th. The Seoul metropolitan area is not expected to fall directly within the typhoon's influence semicircle during the strongest impact period from the 5th to the 7th. However, if the typhoon's path shifts northward and it intensifies strongly, the possibility of it affecting the area cannot be ruled out.

Forecaster Woo warned, "When the typhoon approaches, the very low central pressure weakens the air pressure pressing down on the sea surface, causing a sea level rise effect. This can lead to storm surges caused by strong winds and seawater overflowing onto land," adding, "Backflow and river flooding may cause low-lying areas to be submerged, so special precautions are necessary in areas recently affected by heavy rain damage."

This content was produced with the assistance of AI translation services.