


Tropical Weather Discussion
Issued by NWS
Issued by NWS
944 AXPQ20 PGUM 090042 TWDPQ Tropical Weather Discussion National Weather Service Tiyan GU 1042 AM ChST Sun Feb 9 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... None. ...OTHER WEATHER SYSTEMS... NEAR EQUATORIAL TROUGH... The Near Equatorial Trough (NET) extends from just east of Mindanao, crossing 130E near 5N. The NET passes through a broad and weak circulation roughly centered near 3N137E, then turns east-southeast to the equator near 142E. Scattered to numerous showers and isolated thunderstorms have been seen across Palau due to a trade-wind trough that is interacting with the NET. The NET is expected to remain fairly stationary over the next few days bringing additional scattered to numerous showers to Palau. TRADE-WIND TROUGHS... A series of trade-wind troughs are seen across Micronesia. The first trough is located just east of Majuro from 12N176E to 2N171E. Scattered to numerous showers are seen on either side of the trough with the bulk of the showers moving across Majuro. The second trough is located near Kwajalein extending from 12N166E to 3N164E. Scattered showers are seen with this trough. Both troughs will move westward over the coming days as they interact with the ITCZ. The next trade-wind trough is located east of Weno and extends from 12N153E to 3N150E. Scattered to numerous showers are seen just south and southeast of Weno along the trough. This trough will move west over the next few days bringing scattered to numerous showers to Chuuk. The last trade-wind trough is located near Palau and extends from 4N138E to 10N130E. Scattered to numerous showers and isolated thunderstorms are seen along the trough. This trough is interacting with the NET to produce a band of enhanced convection. This feature will slowly move westward within the NET over the next couple of days. OTHER SYSTEMS... ...ITCZ... The ITCZ remains weak and has become somewhat fragmented across eastern Micronesia. It stretches westward from the dateline near 7N, passing through Majuro before it ends north of Kosrae near 163E. The ITCZ re-starts just south of Pohnpei around 5N158E and continues westward just south of Weno at 5N151E. Scattered showers are seen along the majority of the ITCZ with numerous showers seen where trade- wind troughs intersect the ITCZ. The ITCZ looks to remain weak and fragmented the next few days. $$ Williams