‘Jenny’ seen to intensify into typhoon, Signal No.1 still up in Batanes

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Metro Manila (CNN Philippines, October 1) – Signal No. 1 is still up in Batanes as Severe Tropical Storm Jenny (international name: Koinu) is seen to become a typhoon Monday morning.

In its 11 p.m. update, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said Jenny slightly intensified as it continues to move in a northwestward direction over the Philippine Sea.

Heavy rainfall is expected until Tuesday evening in Batanes, Babuyan Islands, the northern and eastern portion of mainland Cagayan, and the eastern portion of Isabela.

"In addition, Jenny will continue to enhance the southwest monsoon and bring occasional to monsoon rains over the western portions of Central and Southern Luzon, Visayas, and Mindanao in the next three days," PAGASA said.

The enhanced southwest monsoon is expected to bring gusty conditions over most of Mimaropa, Western Visayas, and Bicol Region.

PAGASA earlier said it is also not ruling out the possibility of landfall or a close approach scenario in the Batanes area. Flooding and rain-induced landslides may also happen in areas susceptible to these hazards.

Jenny is forecast to steadily strengthen and reach its peak intensity on Tuesday before leaving the Philippine area of responsibility on Thursday evening or Friday morning.

In the latest update, the storm was last spotted 715 kilometers east of Aparri, Cagayan with maximum sustained winds of 110 kilometers per hour (kph) and gustiness of up to 135 kph.

Jenny is the 10th tropical cyclone to enter the Philippine Area of Responsibility this year, and the second this month after Ineng