Typhoon 200715 (KROSA) Typhoon Name = (KROSA) : Crane [Cambodia]

2007-10-06 23:30 JST

Typhoon KROSA recorded the maximum gust of 63.2m/s at Yonaguni Island, and suddenly turned westward to make landfall at Taiwan. However, the typhoon might be blocked by the central mountain range of Taiwan, and moved backward to the east coast of Taiwan. The typhoon is now moving circular near Taiwan and searching for its direction. Because such a strong typhoon is nearly stationary at the east coast of Taiwan, the strong winds and heavy rains keep raging in Taiwan. According to the Central Weather Bureau of Taiwan, accumulated rainfall since October 5 has exceeded 1000mm at maximum. Moreover, the stationary movement of the typhoon prolongs stormy weather and storm surges at Sakishima Islands, where the typhoon was once regarded as fading away.

2007-10-06 15:00 JST

Typhoon KROSA has passed near Yonaguni Island. The time of pass was earlier than expected because of the increase of speed, and the minimum pressure of 929.2hPa observed at Yonaguni Island at 11:40 JST was the lowest pressure on record. The images below are satellite images (visble imagery) almost exactly at the time that the typhoon was passing near Yonaguni Island. These images show that the eye was covered with clouds, so it seems that clear sky was not seen at Yonaguni Island even when the place was contained in the eye. This year we have seen successive direct hit of string typhoon against remote islands in Okinawa - Typhoon 200711 that hit Kume Island on September, Typhoon 200712 that hit Iriomote Island on September, and this typhoon that hit Yonaguni Island.

2007-10-05 10:30 JST

Typhoon KROSA is now at the peak intensity, and at the closest distance to Sakishima Islands. According to Japan Meteorological Agency, the maximum gust of 59.6m/s was observed at Ishigaki Island at 08:40 JST. Radar and precipitation nowcast shows that Hateruma Island is now just beneath the eye-wall cloud surrounding the eye of the typhoon, indicating that the island is now suffering from extremely strong winds and rains. The image also shows that very active rain clouds are observed at Ishigaki Island. Using Google Earth version to measure distances, as of 09:00 JST, the center of the typhoon is located from about 50km from Hateruma Island, about 100km from Ishigaki Island, and about 100km from Yonaguni Island. Considering that the speed of the typhoon is now 20km/h, the typhoon will reach its closest point to Yonaguni Island around 13:00 or 14:00 JST, and Yonaguni Island may enter into the eye. Because the size of the typhoon is large, the period of extreme weather is long. Yonaguni Island observation station recorded the maximum wind of 37m/s this morning, when the center of the typhoon was still far away.

2007-10-05 22:15 JST

Typhoon KROSA has further intensified to become a "large and extreme" typhoon, and its eye became more rounded. If this typhoon will pass across Sakishima Islands with this peak intensity, islands such as Hateruma and Yonaguni will experience extremely heavy rains and winds for a long period of time. Moreover, this typhoon shows a zigzag track, moving west or moving north, suggesting that the forecast track of the typhoon may change from time to time, so it is necessary to check the latest information.

2007-10-03 21:00 JST

Typhoon KROSA has been stationary at east of Philippines, and is still wandering around its birth place. It starts moving gradually, however, and this may work as a trigger for the typhoon to start intensification. The image of yesterday shows that the gap at the center was just an area without clouds, but the image of this afternoon shows that there is the eye at the center, indicating that the typhoon is intensifying now. This is a typhoon that needs to be watched in terms of intensity and size.

2007-10-02 13:00 JST

Typhoon KROSA was formed in east of Philippines. According to the forecast by Japan Meteorological Agency and others, this typhoon should be watched may approach Southwest Islands with intensification.

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