Signal No. 1 up in parts of Bicol due to tropical depression Rosal—PAGASA

Published December 10, 2022, 1:01 PM

by Ellalyn De Vera-Ruiz

Tropical Depression Rosal’s Forecast Track (PAGASA)

The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) on Saturday, Dec. 10 raised tropical cyclone wind signal number 1 over three areas in Bicol after the low pressure area (LPA) developed into tropical depression “Rosal”—the 18th tropical cyclone to form inside the country’s area of responsibility this year.

In its tropical cyclone bulletin issued at 11 a.m., PAGASA hoisted Signal No. 1 over Catanduanes, the eastern portion of Camarines Sur (Caramoan, Presentacion, Garchitorena, Lagonoy, San Jose, Tigaon, Sagñay), and the eastern portion of Albay (City of Tabaco, Bacacay, Rapu-Rapu, Malilipot, Malinao, Tiwi).

“Areas under Tropical Cyclone Wind Signal no. 1 may experience strong winds—strong breeze to near gale strength—associated with tropical depression Rosal,” PAGASA said.

Moreover, moderate to occasional intense rains may prevail over the Bicol Region and Quezon province.

Moderate to heavy rains may also affect Oriental Mindoro, Occidental Mindoro, Marinduque, Romblon, Palawan, and Western Visayas; while light to occasional heavy rains may prevail over Aurora, Cavite, Laguna, Batangas, Rizal, and the rest of Visayas.

By Sunday, Dec. 11, light to occasional heavy rains may persist in Bicol Region, Quezon, and Aurora.

“Under these conditions, flooding and rain-induced landslides are expected, especially in areas that are highly or very highly susceptible to these hazards as identified in hazard maps and in localities with significant antecedent rainfall,” PAGASA warned.

Rosal’s track, intensity

PAGASA said the low pressure area (LPA) east of Sorsogon intensified into a tropical depression and was given the local name “Rosal” at 8 a.m. on Saturday.

As of 10 a.m., Rosal was estimated 110 kilometers (km) north-northeast of Virac, Catanduanes or 315 km east of Infanta, Quezon. It was moving northwestward at a speed of 20 kph.

It has maximum sustained winds of 45 kilometers per hour (kph) near the center and gustiness of up to 55 kph.

“Rosal is forecast to decelerate while moving generally northward in the next 12 hours before turning north-northeastward or northeastward for the remainder of the forecast period,” PAGASA said.

It may further intensify while moving over the Philippine Sea and may reach the tropical storm category in the next 24 hours.

“However, due to the interaction with the northeast monsoon (amihan), the tropical cyclone may weaken into a tropical depression on Monday (Dec. 12) and become a remnant low on Tuesday (Dec. 13),” PAGASA said.

 
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