SAIPAN – A surface trough near Guam and Rota is producing showers and thunderstorms with locally heavy rain. Tinian and Saipan remain drier and breezier. The disturbance (Invest 90W) west of Guam will move away mid-week, bringing drier weather by Wednesday. Combined seas: 3–4 ft. Low rip current risk.
Yap & Palau: A ridge over Palau keeps fair weather and light winds tonight. Showers may build south into Yap later this week as Invest 90W shifts northwest. Combined seas: 3–4 ft. Winds: 5–10 kt.
FSM (Chuuk, Pohnpei, Kosrae, Majuro): Active ITCZ brings showers and isolated thunderstorms for several days. Southeast winds 10–15 kt south of 5 N; ENE winds north of 5 N. Combined seas: 3–5 ft. Kapingamarangi remains the driest spot.
Drought Outlook: Most areas drought-free. Below-normal rainfall expected near the equator east of 150 E in coming weeks; near-normal elsewhere.
Tropical Systems:
Invest 99W near the Philippines now under a Tropical Cyclone Formation Alert but no threat to Palau, Yap or the Marianas.
Invest 90W west of Guam rated “sub-low,” with development unlikely near the islands.
No other suspect areas at this time, but regional conditions remain active.
