- Tropical cyclone MAWAR continued north-northwest over the North Pacific Ocean towards Guam Island and the southern Northern Mariana Islands (USA). On 23 May around 6.00 UTC, its centre was located over the ocean approximately 255 km south-east of Guam with maximum sustained winds of 213 km/h.
- MAWAR is forecast to continue north-west strengthening and it is expected to make landfall over central Guam in the morning, UTC of 24 May with maximum expected winds up to 230 km/h.
- Heavy rainfall, strong winds and storm surge are forecast over Guam and southern Northern Mariana Islands (in particular the Rota Island) over 23-25 May. NOAA has issued a Typhoon Warning over Guam and Rota and a Tropical Storm Warning over Tinian and Saipan Islands (Northern Mariana Islands). Lou Leon Guerrero Governor of Guam instructed residents who might be in danger from flooding to evacuate.
- It is expected the system to strengthen as it moves west-northwest and approaches northern Luzon, an island of the Philippines that's home to the nation's capital Manila, or the southern Ryukyu Islands of Japan early next week.
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