Satellite imagery
At the time of formation, the depression was located east of Palau as it moved west northwest at 3 mph (5 km/h). Quickscat satellite imagery showed the depression's winds were near 29 mph (46 km/h) and increasing. Satellite imagery later the showed deep convection organizing over the low-level circulation. The depression underwent rapid intensification as it became a tropical storm late in the morning on May 14 and was assigned the name Nida by the Japan Meteorological Agency (JMA). Still intensifying, the storm turned northwest where it reached typhoon status later that night.