Typhoon “Hanna” has slightly weakened as it moves closer to Batanes area which is now under public storm warning signal no. 1, according to the Philippine Atmospheric, Geophysical and Astronomical Services (PAGASA) on Thursday.
PAGASA weather forecaster Aldczar Aurelio said that as of 5 a.m. Thursday, the eye of typhoon Hanna was located 930 km east of Basco, Batanes (20.5°N, 130.9°E).
Aurelio said the typhoon’s maximum sustained winds has gone down from 195 kilometer per hour on Wednesday to 175 kph on Thursday morning near the center and its gustiness from 230 kph to 210 kph. It is forecast to move west northwest at 20 kph.
He said typhoon Hanna is still expected not to make a landfall in any part of the country and is likely to exit the country by Saturday towards Taiwan and China.
He added public storm warning signal no. 1 (30-60 kph expected in 36 hours) has been raised in Batanes group of Islands.
The estimated rainfall amount is from moderate to heavy within the 650 km diameter of the typhoon.
While maintaining its speed and movement, the typhoon is forecast to be at 495 km east northeast of Itbayat, Batanes by Friday morning.
By Saturday morning it is estimated to be at 245 km north of Itbayat, Batanes and by Sunday morning is expected outside PAR or 690 km northwest of Itbayat, Batanes.
He said monsoon rains which may trigger flashfloods and landslides will be experienced over Bicol, Visayas, Mindanao and the province of Palawan while cloudy skies with light to moderate rains and isolated thunderstorms is expected in Metro Manila, Calabarzon (Cavite, Laguna, Batangas, Rizal and Quezon), and the provinces of Mindoro, Marinduque and Romblon. Partly cloudy to cloudy skies with isolated thunderstorms will prevail over the rest of Luzon.
The western part of the country, including Metro Manila, will experience rainy weather by Friday or until weekend due to southwest monsoon enhanced by the typhoon.
Aurelio said the state-run weather bureau also issued a gale warning due to the effects of southwest monsoon enhanced by the typhoon as the sea condition will be rough to very rough due to strong to gale force winds is expected to affect the Northern and Eastern seaboards of Luzon, the seaboards of Palawan, of Visayas and of Mindanao.
“Fishing boats and other small seacrafts are advised not to venture out into the sea while larger sea vessels are alerted against big waves,” it warned.
In its advisory, PAGASA said moderate to strong winds blowing from the northwest to west will prevail over Northern and Central Luzon and coming from the southwest over the rest of the country. The coastal waters throughout the archipelago will be moderate to rough.