熱帶氣旋形成警報
On March 26, the Naval Research Laboratory identified a broad area of low pressure in the Western North Pacific. It moved west-northwestward over the next few days, slowly gaining organisation. According to the Japan Meteorological Agency's best-track, it became a tropical depression on March 30. The next day, the Joint Typhoon Warning Center issued a Tropical Cyclone Formation Alert due to an increased consolidation of the low-level circulation of the system. The intensity was increased to 30 knots at the same time by the JMA, as the depression moved westward.