More areas were placed under Signal No. 1 due to Tropical Depression Quinta on Saturday afternoon, October 24.
In an online briefing past 5 pm on Saturday, the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) said Quinta is now 610 kilometers east of Juban, Sorsogon.
The tropical depression slowed down, moving west northwest at 20 kilometers per hour (km/h) from the previous 30 km/h.
Though it is slower, Quinta remains on track to make landfall in the region of Bicol between Sunday evening, October 25, and early Monday morning, October 26, then cross Southern Luzon on Monday. Metro Manila may be affected.
So far, Quinta continues to have maximum winds of 55 km/h and gustiness of up to 70 km/h. But it is seen to strengthen into a tropical storm within 12 hours, and then into a severe tropical storm before it hits land.
After crossing land, it could then become a typhoon over the West Philippine Sea. (READ: FAST FACTS: Tropical cyclones, rainfall advisories)
PAGASA warned that strong to near gale-force winds will be felt in areas under Signal No. 1 within 36 hours from the time the tropical cyclone wind signal was first raised.
Strong to gale-force winds from a northeasterly surge will also persist in the following areas:
Quinta is not yet near land. But its trough or extension, along with the trough of Severe Tropical Storm Saudel – formerly Pepito when it was still inside the Philippine Area of Responsibility (PAR) – will continue to trigger rain from Saturday evening until Sunday morning. Saudel is now 860 kilometers west of Northern Luzon and still heading for Vietnam.
A stationary front linked to the northeasterly surge is also causing rain in the areas listed below. The World Meteorological Organization defines a front as "a boundary or transition zone between two air masses of different density and thus (usually) of different temperature."
A gale warning remains in effect for these seaboards due to rough to very rough seas, with waves 2.8 to 6 meters high:
Moderate to rough seas, with waves 1.5 to 2.5 meters high, will also be experienced in these seaboards:
"Inexperienced mariners should avoid navigating in these conditions," PAGASA said.
Based on its latest forecast track, Quinta might leave PAR on Tuesday, October 27.
Image from PAGASA
Quinta is the Philippines' 17th tropical cyclone for 2020, and the 4th for October.
An average of 20 tropical cyclones form within or enter PAR each year. (READ: LIST: PAGASA's names for tropical cyclones in 2020)
These are PAGASA's latest estimates for the number of tropical cyclones inside PAR in the next 6 months: