Typhoon “Pepeng” (international name: Parma) Sunday slowly moved away from the Philippines while another super typhoon has formed over the Pacific and is forecast to enter the archipelago Monday.

The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) warned of continued rain over Cagayan, Ilocos Norte and Batanes in the coming days as the new disturbance (international name: Melor) approaches.

At 10 a.m. Sunday, Pepeng was packing maximum sustained winds of 120 kilometers per hour and gustiness of up to 150 kph when it was spotted by by PAGASA 80 kilometers north northwest of Laoag City in Ilocos Norte.

PAGASA Director Dr. Prisco Nilo said Pepeng was moving very slow at 9 kph west northwest because of the Fujiwara effect – an interaction between two nearby cyclones that cause them to appear to "orbit" each other. Japanese meteorologist Dr. Sakuhei Fujiwhara coined the term in 1921.

Nilo said the phenomenon causes the typhoons to influence each other’s movement.

“Mabagal at hindi halos kumikilos,” Nilo said referring to Pepeng, adding that they are still clueless as to how long the typhoon will linger over the Philippine area of responsibility or PAR.

Nilo said there is even a possibility that Pepeng would return to the country and hit the Ilocos provinces and Batanes anew because of the Fujiwara phenomenon.

According to PAGASA’s 11 a.m. severe weather bulletin Sunday, Pepeng was forecast to remain almost stationary some 120 km north northwest of Laoag City by Monday morning. It is estimated to be 160 km northwest of Laoag by Tuesday morning and 200 km west northwest by Wednesday morning.

As of 11 a.m. Sunday Public Storm Warning Signal No.3 was still hoisted over the Batanes group of islands, northern Cagayan, Babuyan, Calayan Islands, Ilocos Norte and Apayao.

Signal No. 2 was hoisted over Ilocos Sur, Abra, Kalinga, and the rest of Cagayan while La Union, Benguet, Mt. Province and northern Isabela were under Signal No. 1.

Meanwhile, Melor is forecast to enter PAR Monday, about 2,200 kilometers east of Luzon.

According to the website of the National Weather Service of the US National Oceanic and Atmospheric Administration (NOAA), Melor became a super typhoon Sunday and continued moving westward away from the Northern Marianas.

“Melor” was moving west at 16 kph with maximum sustained winds of 165 kph, NOAA said.

PAGASA senior weather forecaster Mario Palafox however said there is a big possibility that Melor would not affect the country.

“Hopefully, tatama siya sa PAR sa may bandang east ng Taiwan so walang epekto sa Pilipinas,” Palafox said.

Once Melor enters the PAR, it would be named “Quedan,” PAGASA said.