Tropical Weather Discussion
Issued by NWS
Issued by NWS
467 AXPQ20 PGUM 080013 TWDPQ Tropical Weather Discussion National Weather Service Tiyan GU 1013 AM ChST Sat Nov 8 2025 Tropical Weather Discussion for the Western North Pacific between the Equator and 25N from 130E to 180. The following information is based on recent satellite imagery/data, weather observations, radar, and meteorological analysis. ...SPECIAL FEATURES... TROPICAL CYCLONES... Typhoon Fung-Wong (32W) is centered 12N133E north-northwest of Palau. It currently moving at 16 mph to the west-northwest, with maximum sustained winds of 80 mph near the center. Moderate to deep convection is associated with this feature, producing showers across a large area between the Equator and 20N, from 130E to 142E. In addition, laterally developing lines of thunderstorms are observed south of Palau, and widely scattered ones west-northwest of the Marianas. Due to its large size, this system is interacting with westerly-moving synoptic systems in the mid-latitudes, forming a squall line along the leading edge of a cold front entering the region near 25N153E just northwest of Minamitorishima. Fung-wong is expected to maintain its general course toward the Philippines, with a slight increase in forward speed expected through Sunday, allowing a minor ridge to form in its wake across the Marianas, Palau and Yap by early next week. For more information please refer to bulletins from the Joint Typhoon Warning Center under WMO header WTPN32 PGTW and from the National Weather Service under WMO header WTPQ32 PGUM. ...OTHER WEATHER SYSTEMS... TRADE-WIND TROUGHS... A few trade-wind troughs span much of eastern Micronesia, with most remaining largely indistinguishable from the background trades. The more notable ones are integrated within the ITCZ in eastern Micronesia, producing scattered to numerous showers near Pohnpei, Kosrae and the Marshalls. These troughs are expected to continue to move west along with the ITCZ, remaining largely transient in nature over the coming days. OTHER SYSTEMS... A large, weak upper-level trough enters the region near 21N180, extending west-southwest to a low near 18N165E to then extend farther south and end near Pohnpei, where it is interacting with the surface features such as the ITCZ to develop scattered thunderstorms just northeast Pohnpei and northwest of Majuro. This system is expected to slowly shift northeast as it gets pinched by the upper- level jet and eventually stretches out near Wake Island, while the southern sector will shift west across Chuuk by early next week. ...ITCZ... The Intertropical Convergence Zone (ITCZ) enters the region near 6N180, to then extend west across the Marshalls and end near Kosrae. Moderate convection is asssociated with this feature, producing scattered to numerous showers and some thunderstorms between 2N and 10N, from Kosrae across the Marshalls to the Date Line. In addition, a pocket of scattered thunderstorms is observed just northeast of Pohnpei, where the leading edge of the ITCZ is interacting with the southern portions of the aforementioned upper-level trough. Convection embedded within the ITCZ is expected to increase over the coming days as the feature continues moving west, before peaking in convective vigor as it interacts with a potential tropical disturbance developing near Chuuk early next week, to then dissipate as early as Tuesday. $$ Montvila