Typhoon Mawar sets sights on Philippines, Taiwan and Japan after blow to Guam

Typhoon Mawar, which pounded Guam with destructive winds and flooding downpours earlier this week, is continuing to churn west across the Pacific Ocean and will impact more landmasses in the western Pacific and eastern Asia this week, according to AccuWeather forecasters.

Mawar already achieved the status of strongest tropical cyclone on the planet so far this year, and it will remain a powerful storm as it aims for portions of the Philippines, Japan and Taiwan, with more flooding rainfall and strong winds expected this week.

Typhoon Mawar is seen on AccuWeather Enhanced RealVue™ satellite May 28, 2023.

As of Sunday afternoon, local time, Mawar was centered across the central Philippine Sea, packing winds equivalent to that of a Category 3 hurricane on the Saffir-Simpson hurricane wind scale (maximum sustained winds of 111-126 mph, or 178-208 km/h), according to the Japanese Meteorological Agency (JMA), which monitors and tracks tropical cyclones in this portion of the western Pacific tropical basin.

Mawar peaked at the equivalent of a Category 5 hurricane (maximum sustained winds of at least 157 mph, or 252 km/h) on Friday after passing by Guam.

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Mawar is forecast to maintain or slowly lose wind intensity as it continues to track to the west-northwest across the Philippine Sea through the beginning of the week.

The Philippine Sea is a marginal sea located within the western Pacific Ocean, bounded by the Philippines to the west and the Mariana Trench to the east.

"The typhoon is expected to bring heavy rain and gusty winds to northern Luzon in the Philippines through Tuesday, local time," said AccuWeather Lead International Forecaster Jason Nicholls.

While the center of the typhoon is expected to remain to the north of Luzon when it approaches early this week, there will still be impacts, and AccuWeather meteorologists warn that the storm can still be the equivalent of a Category 3 hurricane around then.

"The amount of rain that falls and the strength of the wind in the Philippines will depend on how close the storm gets before making an expected turn to the north," added Nicholls. Despite that uncertainty, even the outer rain bands of a tropical system like Mawar can bring flooding downpours and damaging wind gusts.

As Mawar approached the Philippines, the country's weather bureau, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), began officially monitoring the typhoon as of early Saturday morning, local time. At that point, the typhoon gained the designation of 'Betty' in the Philippines.

Ahead of the expected impacts this weekend, officials in the Philippines are preparing. Sea trips around the archipelago nation are being suspended, an official with the Philippine Ports Authority told CNN. Additionally, operators of smaller boats are being warned against fishing and sailing in the waters off the coast.

After Mawar impacts the Philippines this week, AccuWeather forecasters expect the typhoon to take aim at portions of Japan and Taiwan through the end of the week. Several days of rain from Tuesday into Thursday or Friday can put eastern and northern Taiwan as risk for flooding. The storm should remain far enough offshore to limit the threat for wind damage to mainland Taiwan.

"Despite an expected loss in wind intensity as the typhoon churns to the north, Japan's Ryukyu Islands could also endure impacts during the middle and latter portion of the week," said Nicholls. "Eventually, the southern Japan mainland could endure impacts by the weekend."

Mawar has already carved a powerful and destructive path since it was first designated as a tropical system over the open waters of the Pacific back on May 19. Just two days later, it became the first typhoon of the 2023 season and the strongest storm the planet has seen so far this year less than a week later.

Although typhoons regularly impact Guam, Mawar has since achieved a strength, both in wind intensity and minimum central pressure, not seen in the tropical basin as a whole since deadly Typhoon Surigae in 2021 or in that specific part of the basin near Guam since Typhoon Damrey in 2000.

When it impacted Guam on Wednesday, the typhoon unleashed strong winds of over 140 mph (225 km/h) snapped trees, ripped roofs off of buildings and brought more than 2 feet of rain in just hours.

"We're looking out our door and what used to be a jungle looks like toothpicks, like a scene from the movie 'Twister,' with trees just thrashed apart," Landon Aydlett, a meteorologist with the National Weather Service in Guam, told The Associated Press.

While damage and power outages were widespread, the AP reported that there were no fatalities and only minor injuries as Mawar moved through.

President Biden approved a disaster declaration for the island late Thursday, which will allow federal funding to flow to the United States territory to aid in the recovery effort in the coming days and months.

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