Tropical Weather Discussion
Issued by NWS
Issued by NWS
901 AXPQ20 PGUM 010104 TWDPQ Tropical Weather Discussion National Weather Service Tiyan GU 1104 AM ChST Mon Jul 1 2024 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) enters the region at 15N130E east of the Philippines and extends southeast to 7N134E near Koror. This is producing numerous showers and scattered thunderstorms within within 75 miles of the trough axis. The NET is expected to continue moving northwest and be outside of the AOR by tomorrow. ...ITCZ... The western boundary of the Inter-Tropical Convergence Zone (ITCZ) is seen near Eauripik at around 5N145E where spotty showers can be seen south of Chuuk and Satawal to the equator. The ITCZ extends east-northeast, passing south of Chuuk, then extends through Pohnpei and Kosrae, and ends near Majuro. The ITCZ remains weak and fragmented, pockets of showers and isolated thunderstorms are seen in areas of embedded trade-wind troughs. The western portion of the ITCZ near Eauripik is expected to develop and bring an increase in showers for the outer islands of Chuuk State. TRADE-WIND TROUGHS...Embedded within a weak ITCZ, trade-wind troughs over Kosrae and Majuro are producing scattered showers and isolated thunderstorms over a localized area. These trough are expected to continue to produce localized showers along the ITCZ. TUTT... An upper-level low is seen near 16N132E and is producing scattered showers and thunderstorms along the southern portion of the low. It extends eastward to north of the Mariana Islands. Another Tropical Upper-Tropospheric Trough (TUTT) comes down from 25N180 to 10N162E near the Marshall Islands. Widespread cloudiness and light to moderate showers are seen east of the TUTT`s trough axis. Another TUTT is expected to move across the Mariana Islands later tonight through Wednesday. Hong