Tropical Storm Jangmi advances across the Western Pacific near 16.7°N, 130.8°E with 50-knot winds and rapid intensification risk over warm waters threatening Mariana Islands and Micronesia.
⛈️ OPEN LIVE 3D WEATHER ALERTSTropical Storm Jangmi is advancing across the Western Pacific near 16.7°N, 130.8°E as of 29 May 2026, with sustained winds near 50 knots (57 mph) and a track toward the Mariana Islands and Micronesia. The storm system poses immediate risk of heavy rainfall, gusty winds exceeding 60 knots, and rough seas across shipping lanes and island communities in the region. Satellite imagery from NOAA shows a compact circulation with organized convection intensifying in the past 12 hours, indicating continued strengthening potential over warm tropical waters.
Tropical cyclone formation in the Western Pacific depends on warm sea surface temperatures (≥26.5°C), low wind shear, and sufficient atmospheric moisture—all present in this region during late May. Jangmi is intensifying through latent heat release: warm ocean water evaporates, rises in the storm's core, condenses at altitude, and releases enormous energy that tightens the circulation and deepens the low-pressure center. The storm's northwestward trajectory reflects the subtropical ridge—a high-pressure system steering tropical systems along its western flank.
Real-time NOAA satellite passes (GOES-West infrared and microwave) measure cloud-top brightness temperature and precipitation rates, updating every 30 minutes. Atmospheric pressure from dropsondes deployed by NOAA Hurricane Hunters directly into Jangmi's core confirms circulation strength, while wind-field models assimilate buoy and ship reports to refine track and intensity forecasts visible in live simulation overlays.
Tropical storms develop over warm oceans between 5° and 30° latitude where Coriolis force enables rotation. Wind shear below 10 m/s and sea surface temperature above 26.5°C are optimal conditions. The Western Pacific basin averages 26 tropical cyclones annually—the planet's most active region.
Monitor Pandita Data's live weather simulation to track Jangmi's pressure, wind field, and rainfall forecast in real time as new satellite data streams in.