Special Weather Statement - Moderate | Effective 05/25/2026 00:04

A tropical disturbance, known as JTWC's Invest 99W, is currently centered near 8N141E, east of Sorol. Invest 99W continues to slowly improve in organization as the eastern half of the broader circulation begins to pivot to a more northeast to southwest orientation instead of an east to west orientation. This will allow for 99W to begin consolidating over the next few days. The JTWC has increased 99W to LOW, which means development into a tropical cyclone is not expected within 24 hours, but could potentially organize in the next few days. Numerous to widespread showers and isolated thunderstorms are seen along the southern, eastern, and northern peripheries of 99W. Heavy rainfall and gusty winds are expected across much of Palau and western Yap State, including Yap Proper this week. As Invest 99W lifts northward this week, the developing monsoon tail will continue to intensify on the south side. Westerly to southwesterly winds of 20 to 30 kts are expected along with seas hazardous to small craft. Guidance still shows this region as a narrow band displaced from both Yap's and Palau's coastal waters to the south and east, with seas remaining below 10 feet through Wednesday. As the system shifts further northwest, the monsoon tail may transition into an inflow tail with southerly flow. This looks to bring seas near hazardous conditions to Yap's and potentially Palau's coastal waters late this week. Residents and mariners should monitor the latest forecasts for the region at weather.gov/gum/PublicForecasts and any information shared by WSO Palau, WSO Yap, and WSO Chuuk for the local regions. For more information on Invest 99W, see bulletins issued by JTWC under WMO header ABPW10 PGTW.