Typhoon Chan-hom, known in the Philippines as Typhoon Emong, was the sixth tropical depression and the second tropical storm to develop during the 2009 Pacific typhoon season. Chan-hom developed out of an area of convectional cloudiness associated with an area of disturbed weather which originated from the remnants of Tropical Depression Crising and formed southeast of Nha Trang, Vietnam on May 2. Moving towards the northeast, it slowly organized according to JTWC who issued a TCFA, and JMA classified Chan-hom as a minor tropical depression later that day. The next day, both JTWC and JMA upgraded the depression to a tropical storm and named it Chan-hom. On May 6, the storm intensified into a Category 1 typhoon, and on May 7, Chan-hom intensified into a Category 2 typhoon equivalent. However, Chan-hom weakened into a severe tropical storm after passing northern Luzon. On May 14, Chan-hom regenerated into a Tropical Depression, before dissipating late on May 15. Laos submitted the name Chan-hom, which means a kind of tree. Meteorological history Typhoon Chan-hom was first identified as a disorganized area of low pressure on May 2, 2009 situated roughly southeast of Nha Trang, Vietnam in the South China Sea. Deep convection was mainly confined to the northern portion of the system; however, a band of cloud cover had begun to wrap around the center of circulation during the afternoon. Later that day, the Japan Meteorological Agency (JMA) began monitoring the developing low as a tropical depression. Hours later, the Joint Typhoon Warning Center (JTWC) issued a Tropical Cyclone Formation Alert for the system as convection consolidated around the center of circulation. Further development was anticipated as the storm slowly moved through an area of warm sea surface temperatures and low wind shear, conditions favoring tropical cyclone formation. Early on May 3, the JTWC classified the system as Tropical Depression 02W. Following the formation of a central dense overcast, both the JTWC and JMA upgraded the depression to a tropical storm, at which time it received the name Chan-hom. Situated to the north of a weak subtropical ridge, little movement was expected over the next two days. Modest strengthening took place as Chan-hom drifted slowly towards the north before taking a more northeasterly path. By the morning of May 5, the storm developed a symmetrical cloud cover with notable banding features. According to the JMA, maximum sustained winds within the cyclone had reached