page_title: Typhoon Damrey (2017)
section_title: Meteorological history
hierarchical_section_title: Typhoon Damrey (2017) / Meteorological history
caption_attribution_description: English: Track map of Typhoon Damrey of the 2017 Pacific typhoon season. The points show the location of the storm at 6-hour intervals. The colour represents the storm's maximum sustained wind speeds as classified in the Saffir–Simpson scale (see below), and the shape of the data points represent the nature of the storm, according to the legend below. Saffir–Simpson scale Tropical depression≤38 mph≤62 km/h Category 3111–129 mph178–208 km/h Tropical storm39–73 mph63–118 km/h Category 4130–156 mph209–251 km/h Category 174–95 mph119–153 km/h Category 5≥157 mph≥252 km/h Category 296–110 mph154–177 km/h Unknown Storm type Tropical cyclone Subtropical cyclone Extratropical cyclone / Remnant low / Tropical disturbance / Monsoon depression
context_page_description: Typhoon Damrey, known in the Philippines as Severe Tropical Storm Ramil, was a strong tropical cyclone that affected Vietnam during early November 2017. Damrey first originated as a tropical depression over the Philippine archipelago of Visayas on October 31. Emerging to the South China Sea few days later, the system strengthened into the second deadliest and twenty-third named storm of the 2017 Pacific typhoon season. Rapidly intensifying, Damrey strengthened into the tenth typhoon on November 3, reaching its peak strength as a Category 2 in the same day. Damrey made landfall over Khánh Hoà, Vietnam during the next day as it rapidly weakened, and fully dissipated on November 5. Damrey was the strongest typhoon to strike South-Central Vietnam since 2001's Typhoon Lingling.
  Strong winds, heavy rainfall and result severe flooding in Central Vietnam by the typhoon killed 142 people and total damage reached over US$1 billion. Damrey made landfall in central Vietnam as the region hosted the 2017 APEC Summit in Da Nang.
context_section_description: On October 31, the Japan Meteorological Agency (JMA) began monitoring on a weak tropical depression that had developed approximately 349 km (217 mi) to the west of Cebu. Six hours later, the JMA began issuing advisories on the system after winds near its center has reached about 55 km/h (35 mph). By about 21:00 UTC of the same day, the PAGASA had classified the system as a tropical depression, assigning the local name Ramil. Around the same time, the Joint Typhoon Warning Center (JTWC) had issued a Tropical Cyclone Formation Alert on the system.
  By November 1, the JTWC had classified Ramil to a tropical depression, giving the international designation of 28W, after convection around its low-level circulation center (LLCC) began to consolidate. Thereafter, on November 2, the JMA upgraded the system to a tropical storm, receiving the name Damrey, the twenty-third named storm of the season. After the system was located over in a favorable environment including continuous convective organization, the JTWC followed suit on upgrading it to a tropical storm. Satellite imagery later depicted deep convective banding wrapping into its LLCC which caused Damrey to further strengthen. By 18:00 UTC of the same day, Damrey strengthened into a severe tropical storm by the JMA. Shortly thereafter, the structure of the storm had become symmetric with much deeper convection and an improved radial outflow. Vertical wind shear was also very low at around 5 knots, which is favorable for a cyclone to develop even further.
  The JMA upgraded Damrey to a typhoon early on November 3. Three hours later, the JTWC followed suit and classified it as a Category 1-equivalent typhoon, after animated satellite imagery depicted a "strengthening" system and a well-defined circular eye feature. At this stage, Damrey was located in conditions of low shear and warm sea-surface temperatures of 27–28 °C (81–82 °F) with good outflow. The JMA had already declared that Damrey reached its peak intensity with 10-minute sustained winds of 130 km/h (80 mph) and a minimum barometric pressure of 970 hPa. Six hours later, microwave images showed the eye becoming well-defined and an improved storm structure with a large centralized convective mass occluding to its center. By 21:00 UTC, the JTWC upgraded Damrey to a Category 2-equivalent typhoon, reaching its peak strength with 1-minute sustained winds of 165 km/h (105 mph). The JTWC issued their final advisory on the typhoon on 03:00 UTC on November 4, as it made landfall in Vạn Ninh District, Khánh Hòa Province, Vietnam as its convective structure started to deteriorate. Three hours later, the JMA downgraded Damrey to a severe tropical storm, then to a tropical storm. The JMA issued their final advisory on 12:00 UTC on November 4. The agency continued to track the system as it fully dissipated on 00:00 UTC on November 5.
caption: Map plotting the track and the intensity of the storm, according to the Saffir–Simpson scale
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