Tropical Weather Discussion
Issued by NWS
Issued by NWS
690 AXPQ20 PGUM 040104 TWDPQ Tropical Weather Discussion National Weather Service Tiyan GU 1104 AM ChST Wed Nov 4 2026 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 In-fa strengthened despite moving towards colder waters. The latest visible imagery shows In-fa located approximately 175 miles west of Iwo To at 24.4N 138.6E, moving north at 7 mph. Maximum sustained winds have increased to approximately 100 mph. Typhoon In-fa will likely remain at low-mid typhoon strength as it turns northeastward and enters the northern Pacific, and is expected to weaken as it moves out of Guam`s AOR, before transitioning into an extratropical cyclone. For more information please refer to bulletins from the Joint Typhoon Warning Center under WMO header WTPN31 PGTW and from the National Weather Service under WMO header WTPQ31 PGUM. ...OTHER WEATHER SYSTEMS... NEAR-EUQITORIAL TROUGH... A monsoon-like, near-equitorial trough enters Guam`s AOR near 4.5N 130E, extending eastward through Kosrae, passing just south of Majuro, and exiting the AOR near EQ180. A small area of disorganized scattered showers and thunderstorms are found within the trough, starting around 3.0N 133E, extending eastward to 4N 141E. A second area of disorganized scattered showers and thunderstorms are found within the trough, starting around 1.0N 158E, extending east-northeastward to 3.0N 166E. Between these two areas, small pockets of locally isolated showers and thunderstorms are also found. TUTT... A Tropical Upper-Tropospheric Trough with very weak upper-level support is found near 12.0N 162E extending north- northeastward to around 20.2N 168E. The TUTT is expected to move predominantly westward, with model guidance indicating a further decrease in upper-level support as it approaches the Marianas later this week. Scattered showers and thunderstorms are associated with the west axis of this trough. $$ Kennedy