9 2009 in Vietnam

The September 2009 Vietnam tropical depression was a weak tropical depression that caused deadly flooding throughout central Vietnam in early September. Forming out of an area of low pressure on September 3, the depression hardly intensified as it meandered off the coast of Vietnam. Initially situated in a favorable environment, convective banding features began to develop and shower and thunderstorm activity formed near the center. On September 4, the Joint Typhoon Warning Center issued a Tropical Cyclone Formation Alert; however, a sudden increase in wind shear caused the system to rapidly become disorganized, leading to the cancellation of the alert the next day. The system continued to slowly track off the coast of Vietnam, nearly dissipating on September 5, before becoming better organized. However, the depression remained weak, with the JTWC reporting on September 7 that the depression had dissipated, though the Japan Meteorological Agency (JMA) continued to issue advisories until the depression dissipated during September 9.

Typhoon Chan-hom, known in the Philippines as Typhoon Emong, is 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.

Clash is a 2009 Vietnamese action martial arts film directed by Le Thanh Son and starring Johnny Tri Nguyen and actress/singer Veronica Ngo. Johnny Tri Nguyen and Veronica Ngo had recently appeared together in the 2007 film The Rebel.

Typhoon Ketsana, known in the Philippines as Tropical Storm Ondoy, was the second-most devastating tropical cyclone of the 2009 Pacific typhoon season, causing $1.15 billion in damages and 921 fatalities, only behind Morakot earlier in the season, which caused 789 deaths and damages worth $6.2 billion. Ketsana was the sixteenth tropical storm, and the eighth typhoon of the season. It was the most devastating tropical cyclone to hit Manila, surpassing Typhoon Patsy (Yoling) in 1970.

Typhoon Mirinae, known in the Philippines as Typhoon Santi, was the 34th depression and the 14th typhoon in the 2009 Pacific typhoon season. It came several weeks after Typhoons Ketsana and Parma devastated the Philippines, thus adding additional damage wrought by the two typhoons.

Tropical Storm Mujigae, known in the Philippines as Tropical Depression Maring, formed as a tropical disturbance during September 8, to the northwest of Manila in the Philippines it rapidly consolidated and was designated as Tropical Depression Maring later that day.

Typhoon Parma, known in the Philippines as Typhoon Pepeng, was the second typhoon to affect the Philippines within the span of a week during September 2009.

Sơn Đoòng cave is one of the world's largest natural caves in Phong Nha-Kẻ Bàng National Park, Bố Trạch District, Quảng Bình Province, Vietnam.

Tropical Storm Soudelor, known in the Philippines as Tropical Depression Gorio, was a weak tropical cyclone that produced deadly flooding in the Philippines, China and Vietnam in July 2009. Forming out of an area of low pressure on July 9, Soudelor failed to maintain deep convection around its center for the duration of its existence. On July 10, the depression brushed the northern Philippines and intensified into a tropical storm on July 11. Later that day, the storm crossed the Leizhou Peninsula. The last public advisory from the JMA was issued the following day after Soudelor made landfall in southern China.