Tropical Storm Kirogi, known in the
Philippines
The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...
as Tropical Storm Tino, was a weak tropical cyclone that affected the Philippines and
Vietnam
Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about and a population of over 100 million, making it the world's List of countries and depende ...
in mid-November 2017. The thirty-ninth tropical depression, twenty-fifth tropical storm, and fourteenth system to affect Vietnam in the
2017 Pacific typhoon season
The 2017 Pacific typhoon season was a below-average season in terms of accumulated cyclone energy and the number of typhoons and super typhoons, and the first since the 1977 Pacific typhoon season, 1977 season to not produce a Category 5-eq ...
,
Kirogi formed as a tropical depression on November 16 in the
Moro Gulf
The Moro Gulf is the largest bay, gulf in the Philippines. It is located off the coast of Mindanao Island, and is part of the Celebes Sea. The gulf is one of the country's tuna fishing grounds.
Geography
The gulf stretches between and is surr ...
. After being given the local name ''Tino'' by the
PAGASA
The Philippine Atmospheric, Geophysical and Astronomical Services Administration (, abbreviated as PAGASA , which means "hope" as in the Tagalog language, Tagalog word ''pag-asa'') is the National Meteorological and Hydrological Services (NMHS ...
, it entered the
South China Sea
The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by South China, in the west by the Indochinese Peninsula, in the east by the islands of Taiwan island, Taiwan and northwestern Philippines (mainly Luz ...
, intensifying into a tropical storm and receiving the name ''Kirogi'' from the
Japan Meteorological Agency
The Japan Meteorological Agency (JMA; ''気象庁, Kishō-chō'') is a division of the Ministry of Land, Infrastructure, Transport and Tourism dedicated to the Scientific, scientific observation and research of natural phenomena. Headquartered ...
on November 18. Continuing westwards, it weakened into a tropical depression before making landfall near
Cam Ranh Bay
Cam Ranh Bay () is a deep-water bay in Vietnam in Khánh Hòa Province. It is located at an inlet of the South China Sea situated on the southeastern coast of Vietnam, between Phan Rang and Nha Trang, approximately 290 kilometers (180 miles) nor ...
in Vietnam on the next day, dissipating shortly afterwards. Kirogi's remnants later contributed to the formation of
Cyclone Ockhi
Very Severe Cyclonic Storm Ockhi () was a strong tropical cyclone that devastated parts of Sri Lanka and India in 2017, and was the most intense tropical cyclone in the Arabian Sea since Cyclone Megh in 2015. The ninth depression, and the third ...
.
Kirogi caused flooding in the Philippines and Vietnam, with trees and power poles toppling in
Ho Chi Minh City
Ho Chi Minh City (HCMC) ('','' TP.HCM; ), commonly known as Saigon (; ), is the most populous city in Vietnam with a population of around 14 million in 2025.
The city's geography is defined by rivers and canals, of which the largest is Saigo ...
. Eight people were killed in Vietnam.
Meteorological history
On November 15 at 15:00
Coordinated Universal Time
Coordinated Universal Time (UTC) is the primary time standard globally used to regulate clocks and time. It establishes a reference for the current time, forming the basis for civil time and time zones. UTC facilitates international communicat ...
(UTC), the
Joint Typhoon Warning Center
The Joint Typhoon Warning Center (JTWC) is a joint United States Navy – United States Air Force command in Pearl Harbor, Hawaii. The JTWC is responsible for the issuing of tropical cyclone warnings in the North-West Pacific Ocean, South P ...
(JTWC) began monitoring an area of convection approximately east-southeast of
Mindanao
Mindanao ( ) is the List of islands of the Philippines, second-largest island in the Philippines, after Luzon, and List of islands by population, seventh-most populous island in the world. Located in the southern region of the archipelago, the ...
for potential development, estimating its development chances within the next day as low. The system was disorganized, with an exposed and ill-defined low-level circulation. The system moved over more favorable conditions for development as the low-level circulation began to consolidate, and at 20:00 UTC, the JTWC upgraded the system's development chances within the next day to medium. On November 16 at 12:00 UTC, the
Japan Meteorological Agency
The Japan Meteorological Agency (JMA; ''気象庁, Kishō-chō'') is a division of the Ministry of Land, Infrastructure, Transport and Tourism dedicated to the Scientific, scientific observation and research of natural phenomena. Headquartered ...
(JMA) assessed that a tropical depression had formed over the
Moro Gulf
The Moro Gulf is the largest bay, gulf in the Philippines. It is located off the coast of Mindanao Island, and is part of the Celebes Sea. The gulf is one of the country's tuna fishing grounds.
Geography
The gulf stretches between and is surr ...
,
and at 21:00 UTC, the JTWC issued a
Tropical Cyclone Formation Alert
A Tropical Cyclone Formation Alert (TCFA) is a bulletin released by the U.S. Navy-operated Joint Typhoon Warning Center in Honolulu, Hawaii or the Fleet Weather Center in Norfolk, Virginia, warning of the possibility of a tropical cyclone formi ...
for the system. On November 17 at 02:00 UTC, the
PAGASA
The Philippine Atmospheric, Geophysical and Astronomical Services Administration (, abbreviated as PAGASA , which means "hope" as in the Tagalog language, Tagalog word ''pag-asa'') is the National Meteorological and Hydrological Services (NMHS ...
assessed that the system developed into a tropical depression, assigning it the local name ''Tino''.
Four hours later at 06:00 UTC, the JTWC assessed that Tino had developed into a tropical depression, assigning it the designation ''31W''.
At 09:00 UTC, Tino made
landfall
Landfall is the event of a storm moving over land after being over water. More broadly, and in relation to human travel, it refers to 'the first land that is reached or seen at the end of a journey across the sea or through the air, or the fact ...
on
Puerto Princesa
Puerto Princesa (, American Spanish: , European Spanish: ), officially the City of Puerto Princesa (Cuyonon language, Cuyonon: ''Siyudad i'ang Puerto Princesa''; ), is a Cities of the Philippines#Legal classification, highly urbanized city in th ...
[ before entering into the ]South China Sea
The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by South China, in the west by the Indochinese Peninsula, in the east by the islands of Taiwan island, Taiwan and northwestern Philippines (mainly Luz ...
. Tino entered the South China Sea as a disorganized system, with a weak low-level circulation and shallow convective bands. Conditions in the area were relatively favorable, with sea surface temperature
Sea surface temperature (or ocean surface temperature) is the ocean temperature, temperature of ocean water close to the surface. The exact meaning of ''surface'' varies in the literature and in practice. It is usually between and below the sea ...
s of , favorable outflow
Outflow may refer to:
*Capital outflow, the capital leaving a particular economy
*Bipolar outflow, in astronomy, two continuous flows of gas from the poles of a star
* Outflow (hydrology), the discharge of a lake or other reservoir system
*Outflow ...
, and vertical wind shear
Wind shear (; also written windshear), sometimes referred to as wind gradient, is a difference in wind speed and/or direction over a relatively short distance in the atmosphere. Atmospheric wind shear is normally described as either vertical ...
at which was partially negated by the system's motion; development was partly limited due to northeasterly dry air.
The JTWC upgraded Tino to a tropical storm at 18:00 UTC[ as the system's low-level circulation became partially exposed; the JMA followed on November 18 at 00:00 UTC, assigning it the international name ''Kirogi''. The JMA estimated that Kirogi peaked in intensity at the same time, with maximum sustained winds of 65 km/h (40 mph) and a minimum central pressure of 1000 ]hPa
The pascal (symbol: Pa) is the unit of pressure in the International System of Units (SI). It is also used to quantify internal pressure, stress, Young's modulus, and ultimate tensile strength. The unit, named after Blaise Pascal, is an S ...
(mbar
The bar is a metric unit of pressure defined as 100,000 Pa (100 kPa), though not part of the International System of Units (SI). A pressure of 1 bar is slightly less than the current average atmospheric pressure on Earth at sea ...
; 29.53 inHg
Inch of mercury (inHg, ″Hg, or in) is a non- SI unit of measurement for pressure. It is used for barometric pressure in weather reports, refrigeration and aviation in the United States.
It is the pressure exerted by a column of mercury in h ...
).[ At 02:00 UTC, Kirogi left the ]Philippine Area of Responsibility
The Philippine Area of Responsibility (PAR) is an area in the Northwestern Pacific where PAGASA, the Philippines' national meteorological agency, monitors weather occurrences. Significant weather disturbances, specifically typhoons that enter o ...
[ as its convection became displaced towards the west and northwest. At 18:00 UTC, the JTWC estimated maximum 1-minute sustained winds of 75 km/h (45 mph);][ convection began to fragment and collapse during the surrounding hours as an ]anticyclone
A high-pressure area, high, or anticyclone, is an area near the surface of a planet where the atmospheric pressure is greater than the pressure in the surrounding regions. Highs are middle-scale meteorological features that result from interpl ...
continued to displace the convection, hindering the system's development. On November 19 at 00:00 UTC, the JMA downgraded Kirogi to a tropical depression,[ before making landfall south-southwest of ]Cam Ranh Bay
Cam Ranh Bay () is a deep-water bay in Vietnam in Khánh Hòa Province. It is located at an inlet of the South China Sea situated on the southeastern coast of Vietnam, between Phan Rang and Nha Trang, approximately 290 kilometers (180 miles) nor ...
and being downgraded to a tropical depression by the JTWC at 06:00 UTC.[ Kirogi was downgraded to a disturbance by the JTWC at 12:00 UTC,][ with the JMA estimating the system to have dissipated.][ Kirogi's remnants would later move into the ]Gulf of Thailand
The Gulf of Thailand (), historically known as the Gulf of Siam (), is a shallow inlet adjacent to the southwestern South China Sea, bounded between the southwestern shores of the Indochinese Peninsula and the northern half of the Malay Peninsula. ...
on November 20 and into the Andaman Sea
The Andaman Sea (historically also known as the Burma Sea) is a marginal sea of the northeastern Indian Ocean bounded by the coastlines of Myanmar and Thailand along the Gulf of Martaban and the west side of the Malay Peninsula, and separated f ...
on November 21, later contributing to the formation of Cyclone Ockhi
Very Severe Cyclonic Storm Ockhi () was a strong tropical cyclone that devastated parts of Sri Lanka and India in 2017, and was the most intense tropical cyclone in the Arabian Sea since Cyclone Megh in 2015. The ninth depression, and the third ...
.
Preparations and impact
Philippines
Signal #1 warnings were raised for the province of Palawan
Palawan (, ), officially the Province of Palawan (; ), is an archipelagic province of the Philippines that is located in the region of Mimaropa. It is the largest province in the country in terms of total area of . The capital and largest c ...
by the PAGASA on November 17 at 03:00 UTC. Warnings remained for Palawan until later that day at 15:00 UTC. The PAGASA advised against sea travel due to rough seas, also warning residents of the possibility of landslides and flooding. In Davao City
Davao City, officially the City of Davao, is a City of the Philippines#Legal classification, highly urbanized city in the Davao Region, Philippines. The city has a total land area of , making it the List of Philippine cities and municipalities ...
, several families evacuated due to flooding.[ Over 200 people in ]Taytay, Palawan
Taytay, officially the Municipality of Taytay ( ), is a municipality in the province of Palawan, Philippines. According to the 2020 census, it has a population of 83,357 people.
Since 2002, its Cathedral of St. Joseph the Worker is the epi ...
, San Vicente, Palawan, and Roxas, Palawan
Roxas, officially the Municipality of Roxas (), is a municipality in the province of Palawan, Philippines. According to the 2020 census, it has a population of 69,624 people.
History
Roxas was created under Republic Act No. 615 in 1951 from the ...
were evacuated. On November 17, Culion
Culion, officially the Municipality of Culion (), is a municipality in the province of Palawan, Philippines. According to the 2020 census, it has a population of 23,213 people.
Culion consists primarily of Culion Island as well as 41 minor sur ...
and Puerto Princesa suspended classes for the day. Almost 100 people were evacuated in Mansalay, Oriental Mindoro
Mansalay, officially the Municipality of Mansalay (), is a municipality in the province of Oriental Mindoro, Philippines. According to the 2020 census, it has a population of 59,114 people.
This town is notable for its indigenous Mangyan popu ...
. Bad weather prompted the cancellation of five domestic flights.
Several barangay
The barangay (; abbreviated as Brgy. or Bgy.), historically referred to as ''barrio'', is the smallest Administrative divisions of the Philippines, administrative division in the Philippines. Named after the Precolonial barangay, precolonial po ...
s in Mansalay were affected by floodwaters deep; San Vicente received floods deep. Three houses were damaged in Palawan; ports in Puerto Princesa, Coron, Palawan
Coron, officially the Municipality of Coron (), is a municipality of the Philippines, municipality in the Philippine Province, province of Palawan, Philippines. According to the 2020 census, it has a population of 65,855 people.
The main popul ...
, Cuyo, Palawan
Cuyo, officially the Municipality of Cuyo (, ), is a municipality of the Philippines, municipality in the Philippine Province, province of Palawan, Philippines. According to the 2020 census, it has a population of 23,489 people.
Its territor ...
, El Nido, Palawan
El Nido, officially the Municipality of El Nido (, ), is a municipality of the Philippines, municipality in the Philippine Province, province of Palawan, Philippines. According to the 2020 census, it has a population of 50,494 people.
A Protec ...
, and Brooke's Point
Brooke's Point, officially the Municipality of Brooke's Point (), is a municipality in the province of Palawan, Philippines. According to the 2020 census, it has a population of 73,994 people.
The Pearl of Lao Tzu, formerly considered the wo ...
temporarily suspended operations, stranding 243 passengers. A total of 497 people were affected as a result of the storm.[
]
Vietnam
The National Center for Hydro-Meteorological Forecasting
The National Centre for Hydro-Meteorological Forecasting (NCHMF, ) is the central and national-level meteorological and weather forecasting service of Vietnam
Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at ...
issued emergency warnings for Bình Thuận Province, Khánh Hòa Province, and Ninh Thuận Province from November 18–19.[ Ninh Thuận ordered fishing boats to anchor in storm shelters before the end of November 18. By the next day, more than 2,600 boats entered storm shelters, with 535 others at sea also having been reported to have sought shelter. Five households in ]Thuận Bắc District
Thuận Bắc is a district (''huyện'') of Ninh Thuận province in the Southeast region of Vietnam.
Geography
Thuan Bac district is located in the northeast of Ninh Thuan province, geographically:
* The northeast borders the East Sea (S ...
were evacuated; residents and tourists were advised and warned to move away from areas close to the shore. Flood warnings were issued for rivers in Bình Thuận, Central Highlands, Đồng Nai Province, and Hà Tĩnh Province Hà is a Vietnamese given name, male or female, meaning "river".
Hà is a Vietnamese 'surname' (during French colonialism). The name is transliterated as He in Chinese and Ha in Korean.
Ha is the anglicized variation of the surname Hà. It is ...
from November 19–24. People living in vulnerable areas were evacuated, with local authorities making plans for reinforcing structures and further evacuations.
Trees in Ho Chi Minh City
Ho Chi Minh City (HCMC) ('','' TP.HCM; ), commonly known as Saigon (; ), is the most populous city in Vietnam with a population of around 14 million in 2025.
The city's geography is defined by rivers and canals, of which the largest is Saigo ...
were uprooted due to strong winds, with several streets experiencing of flooding. Roofs were also blown off of houses in the city, with fallen power poles causing power outages. Flooding on reached depths of . 8,289 buildings were flooded, of which 7,966 were in Thừa Thiên Huế Province and 323 were in Quảng Trị Province. Several hundred meters of embankments for the Hiếu River were damaged by flooding in Cam Lộ
Cam Lộ is a township () and capital of Cam Lộ District, Quảng Trị Province, Vietnam
Vietnam, officially the Socialist Republic of Vietnam (SRV), is a country at the eastern edge of mainland Southeast Asia, with an area of about ...
. Water was released from reservoirs in Central Vietnam
Central Vietnam ( or ), also known as Middle Vietnam or The Middle, formerly known as by the State of Vietnam, by the Republic of Vietnam, or '' Annam'' under French colonial rule, is one of the three geographical regions within Vietnam.
Th ...
and the Central Highlands due to high water levels. In Mỹ Chánh, Quảng Trị, a reported of rain fell within 24 hours. of rain was reported in Qui Nhơn
Quy Nhon ( ) is a coastal city in Bình Định province in central Vietnam. It is composed of 16 wards and five communes with a total of . Quy Nhon was the capital of the former Bình Định province. As of 2022 its population was 481.110. H ...
, with Huế
Huế (formerly Thừa Thiên Huế province) is the southernmost coastal Municipalities of Vietnam, city in the North Central Coast region, the Central Vietnam, Central of Vietnam, approximately in the center of the country. It borders Quảng ...
reporting of rain. of rice and of other crops were damaged. Eight fatalities were reported by the .
Elsewhere
On November 19 in Ko Kut, of rainfall was recorded in 24 hours. The Thai Meteorological Department
The Thai Meteorological Department ( Abrv: TMD; Thai: กรมอุตุนิยมวิทยา, RTGS: ''Krom Utuniyom Witthaya'') is the Thai governmental agency responsible for weather forecasting and monitoring. It is an agency of t ...
advised residents of the possibility of flash floods, strong winds, and storm surge
A storm surge, storm flood, tidal surge, or storm tide is a coastal flood or tsunami-like phenomenon of rising water commonly associated with low-pressure weather systems, such as cyclones. It is measured as the rise in water level above the ...
, also cautioning ships of waves forecasted to reach .
See also
*Weather of 2017
The following is a list of weather events that occurred in 2017.
Summary by weather type
Winter storms and cold waves
Winter weather in 2017 kicked off January 4–8, 2017 North American winter storm, with a winter storm from January 4-8. Th ...
*Tropical cyclones in 2017
During 2017 tropical cyclones formed within seven different tropical cyclone basins, located within various parts of the Atlantic, Pacific and Indian Oceans. During the year, a total of 146 tropical cyclones had formed. 88 tropical cyclones h ...
*Typhoon Damrey (2017)
Typhoon Damrey, known in the Philippines as Severe Tropical Storm Ramil, was a strong tropical cyclone that affected the Philippines and Vietnam during early-November 2017. Damrey first originated as a tropical depression over the Philippine arc ...
– a tropical cyclone that affected similar areas weeks earlier
References
{{reflist
Tropical cyclones in 2017
2017 Pacific typhoon season
2017 disasters in Vietnam