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Japan Meteorological Agency


Japan Meteorological Agency

Japan Meteorological Agency

Kishō-chō (気象庁)
JMA logo

JMA headquarters building in Tokyo
Agency overview
Formed July 1, 1956 (1956-07-01)
Preceding agencies Tokyo Meteorological Observatory
Central Meteorological Observatory
Jurisdiction Government of Japan
Headquarters 1-3-4 Ōtemachi, Chiyoda-ku, Tokyo
Employees 5,539 (2010)[1]
Annual budget ¥62.0 billion (2010-11)[2]
¥59.0 billion (2011-12)[3]
¥58.9 billion (est. 2012)[3]
Agency executives Mitsuhiko Hatori,
Kōichi Sekiguchi,
Deputy Director-General
Parent department MLIT
Website .jp.go.jmawww

The Japan Meteorological Agency (気象庁 Kishō-chō), frequently abbreviated to JMA, is an agency of the Ministry of Land, Infrastructure, Transport and Tourism.[4] It is charged with gathering and providing results for the public in Japan, that are obtained from data based on daily scientific observation and research into natural phenomena in the fields of meteorology, hydrology, seismology and volcanology, among other related scientific fields. Its headquarters is located in Chiyoda, Tokyo.

JMA is also designated one of the forecasting, naming and distribution of warnings for tropical cyclones in the Northwestern Pacific region, including the Celebes Sea, the Sulu Sea, the South China Sea, the East China Sea, the Yellow Sea, the Sea of Japan and the Sea of Okhotsk.


  • History 1
  • Services 2
    • Overview 2.1
    • Observation and Forecast 2.2
      • Weather 2.2.1
        • Land weather
        • Marine weather
        • Aviation weather
        • Tropical cyclones
      • Earthquakes 2.2.2
      • Tsunamis 2.2.3
      • Volcanos 2.2.4
  • Organization 3
    • Headquarters 3.1
    • Local Offices 3.2
    • Auxiliary Organs 3.3
  • Director-Generals and Chief Executives 4
    • Chief Exectives of Central Meteorological Observatory 4.1
    • Director-Generals of JMA 4.2
  • See also 5
  • References 6
  • External links 7


  • August 26, 1872 - The first weather station in Japan set up in Hakodate, Hokkaido. That is the precursor of the present Hakodate Weather Station (函館海洋気象台 Hakodate Kaiyō Kishō-dai).[1]
  • June 1875 - The original Tokyo Meteorological Observatory (東京気象台 Tōkyō Kishō-dai) was formed within the Survey Division of Geography Bureau of Home Ministry (内務省地理寮量地課 Naimu-shō Chiri-ryō Ryōchi-ka).[1][5]
  • January 1, 1887 - The Tokyo Meteorological Observatory was renamed as the Central Meteorological Observatory (中央気象台 Chūō Kishō-dai) with transferring its jurisdiction to the Home Ministry.
  • April 1895 - The Ministry of Education (文部省 Monbushō) replaced the preceding ministry as an administrator of the Observatory.
  • January 1, 1923 - The main office moved to Motoe-machi, Kōjimachi-ku (later Takehira-chō 1), where is near a moat surrounding the Imperial Palace.[6]
  • November 1943 - The Ministry of Transport and Communications (運輸通信省 Un'yu Tūshin-shō) took over the CMO's operation.
  • May 1945 - It got to be a part of the Ministry of Transport (運輸省 Un'yu-shō).
  • July 1, 1956 - The Central Meteorological Observatory became an agency of Ministry of Transport, and has renamed to the Japan Meteorological Agency (気象庁 Kishō-chō).
  • March 1964 - The headquarters office has relocated to the present building in Ōtemachi, Chiyoda-ku.
  • January 6, 2001 - The JMA has become an agency of the Ministry of Land, Infrastructure and Transport (国土交通省 Kokudo-kōtsū-shō) with the Japanese government's administrative reformation.
  • 2013 - It has been announced that it would be scheduled to move the headquarters into Toranomon, Minato-ku.[6]



The JMA is responsible not only for gathering and reporting weather data and forecasts in Japan, but also for observation and warning of earthquakes, tsunamis, and volcanic eruptions.[7]

The agency has six regional administrative offices (including five DMOs and Okinawa Meteorological Observatory), four Marine Observatories, five auxiliary facilities, four Aviation Weather Service Centers and 47 local offices composed of the LMOs. These are also used to gather data, supplemented by weather satellites such as Himawari, and other research institutes.[7]

In 1968, the Regional Specialized Meteorological Centre (RSMC) for Asia.[8] In June 1988, the WMO also assigned the JMA as a RSMC for the Northwestern Pacific under its Tropical Cyclone programme.[8] In July 1989, the RSMC Tokyo - Typhoon Center was established within the headquarters office, which dealt with the forecasting and dissemination of active tropical cyclones, as well as preparing a summary of each year's cyclone activity.[9]

Observation and Forecast


Land weather

Each DMO and LMO issues weather forecasts and warnings or advisories to the general public live in its own area. Weather data used to these forecasts are acquired from the Surface Observation (represented by the AMeDAS), the Radar Observation, the Upper-air Observation and the Satellite Observation mainly using the Himawari series.

Marine weather

The Marine Observatories are seated in Hakodate, Maizuru, Kobe and Nagasaki. These stations observe ocean waves, tide levels, sea surface temperature and ocean current etc. in the Northwestern Pacific basin, as well as the Sea of Japan and the Sea of Okhotsk basin, and provide marine meteorological forecasts resulted from them, in cooperation with the Hydrographic and Oceanographic Department, Japan Coast Guard.

Aviation weather

In 2005, in accordance with the ICAO's new CNS/ATM system, the Civil Aviation Bureau of the MLIT Japan set up the Air Traffic Management Center (ATMC) in Fukuoka, where the Fukuoka FIR is fixed. Along with this establishment, the JMA placed the Air Traffic Meteorology Center (ATMetC) inside the ATMC.

The agency forecasts SIGMET for aircraft in flight within the Fukuoka FIR airspace, while VOLMET is broadcast by each Aviation Weather Service Centers at the airports of Haneda, Narita, Centrair and Kansai. Additionally, Aviation Weather Stations (beside the airports of New Chitose, Sendai, Osaka, Fukuoka, Kagoshima and Naha) deal with the similar tasks as these.

Tropical cyclones

In the Northwestern Pacific area, the typhoon season ordinarily comes almost from May to November. The JMA forecasts and warns or advises on tropical cyclones to the public in Japan and its surrounding countries as well because it also works as the RSMC Tokyo - Typhoon Center.[10]


The JMA has its own 624 observation stations across the country[11] that set up at intervals of 20 km approximately[12] in order to measure seismic intensity of earthquakes precisely. The agency also utilize about 2,900 more seismographs[11] owned by the National Research Institute for Earth Science and Disaster Prevention (NIED) and local governments. A 24-hour office has been housed within the JMA headquarters in Tokyo, for monitoring and tracking seismic events in the vicinity of Japan to collect and process their data, which issues observed earthquake's information on its hypocenter, magnitude, seismic intensity and possibility of tsunami occurrence after quakes quickly to the public through the Earthquake Phenomena Observation System (EPOS).[13] The Earthquake Early Warning (EEW) began to work fully for the general public on October 1, 2007.

The agency is one of the representatives on the national [14]


It is essential to provide coastal regions for tsunami information so that its catastrophic damages can be reduced and mitigated there. In case of there is a possibility of tsunami after the earthquake, the JMA issues Tsunami Warning or Advisory for each region in Japan that contain estimated tsunami heights and arrival times within around 2 – 3 minutes of the quake.


The agency set up four Volcanic Observations and Information Centers within DMOs in Sapporo, Sendai, Tokyo and Fukuoka. They are monitoring volcanic events on 110 active volcanos in Japan and 47 of these volcanos selected by the Coordinating Committee for Prediction of Volcanic Eruption are under the 24-hour observation with seismographs, GPS, air-shock recorders, fixed point observation cameras and so on. If it is predicted a volcanic eruption affects inhabited areas or around a crater, Volcanic Warning should be issued and supplemented by Volcanic Alert Levels.



  • JMA Headquarters (気象庁本庁 Kishō-chō Honchō)
  • Director-General (長官 Chōkan)
  • Deputy Director-General (次長 Jichō)
    • Administration Department (総務部 Soumu-bu)
    • Forecast Department (予報部 Yohō-bu)
    • Observations Department (観測部 Kansoku-bu)
    • Seismological and Volcanological Department (地震火山部 Jishin-kazan-bu)
    • Global Environment and Marine Department (地球環境・海洋部 Chikyū-kankyō/Kaiyō-bu)

Local Offices

Auxiliary Organs

Director-Generals and Chief Executives

Chief Exectives of Central Meteorological Observatory

  1. Arai Ikunosuke (荒井 郁之助): 1890-1891
  2. Kobayashi Kazutomo (小林 一知): 1891-1895
  3. Nakamura Kiyoo (中村 精男): 1895-1923
  4. Okada Takematsu (岡田 武松): 1923-1941
  5. Fujiwhara Sakuhei (藤原 咲平): 1941-1947
  6. Wadachi Kiyoo (和達 清夫): 1947-1956

Director-Generals of JMA

  1. Wadachi Kiyoo (和達 清夫): 1956-1963
  2. Hatakeyama Hisanao (畠山 久尚): 1963-1965
  3. Shibata Yoshiji (柴田 淑次): 1965-1969
  4. Yoshitake Motoji (吉武 素二): 1969-1971
  5. Takahashi Koūchirō (高橋 浩一郎): 1971-1974
  6. Mouri Keitarō (毛利 圭太郎): 1974-1976
  7. Arizumi Naosuke (有住 直介): 1976-1978
  8. Kubota Masaya (窪田 正八): 1978-1980
  9. Masuzawa Jōtarō (増澤 譲太郎): 1980-1983
  10. Suehiro Shigeji (末廣 重二): 1983-1985
  11. Uchida Eiji (内田 英治): 1985-1987
  12. Kikuchi Yukio (菊地 幸雄): 1987-1990
  13. Tatehira Ryōzō (立平 良三): 1990-1992
  14. Nitta Takashi (新田 尚): 1992-1993
  15. Ninomiya Kōzō (二宮 洸三): 1993-1996
  16. Ono Toshiyuki (小野 俊行): 1996-1998
  17. (瀧川 雄壮): 1998-2000
  18. Yamamoto Kōji (山本 孝二): 2000-2003
  19. Kitade Takeo (北出 武夫): 2003-2004
  20. Nagasaka Kōichi (長坂 昴一): 2004-2006
  21. Hiraki Satoshi (平木 哲): 2006-2009
  22. Sakurai Kunio (櫻井 邦雄): 2009-2011
  23. Hatori Mitsuhiko (羽鳥 光彦): 2011–present

See also


  1. ^ a b c 総合パンフレット「気象庁」 (PDF) (in 日本語). Japan Meteorological Agency. January 2011. Retrieved 2012-04-01. 
  2. ^ 平成23年度 気象庁関係予算決定概要 (PDF) (in 日本語). Japan Meteorological Agency. 2010-12-24. Retrieved 2012-04-01. 
  3. ^ a b 平成24年度 気象庁関係予算決定概要 (PDF) (in 日本語). Japan Meteorological Agency. 2011-12-24. Retrieved 2012-04-01. 
  4. ^ "国土交通省設置法 (e-Gov)" (in 日本語).  
  5. ^ Kan'ichi Koinuma (March 1969). 内務省における気象観測の開始の経緯と気象台の名称 (PDF) (in 日本語). Meteorological Society of Japan. Retrieved 2012-03-30. 
  6. ^ a b 気象庁庁舎移転後の新しい露場を選定 (PDF) (in 日本語). Japan Meteorological Agency. September 2008. Retrieved 2012-03-30. 
  7. ^ a b "Japan Meteorological Agency: The national meteorological service of Japan" (PDF). Japan Meteorological Agency. Retrieved 2011-02-07. 
  8. ^ a b "Cooperation through WMO and Other Multilateral Activities". Japan Meteorological Agency. Retrieved 2012-04-03. 
  9. ^ Japan Meteorological Organization (February 2001). "Annual Report on Activities of the RSMC Tokyo - Typhoon Center 2000" (PDF). Retrieved 2011-11-21. 
  10. ^ RSMC Tokyo - Typhoon Center
  11. ^ a b "Table of Observation Stations" (PDF). The Headquarters for Earthquake Research Promotion (of Japan). September 2011. Retrieved 2012-04-02. 
  12. ^ Jochen Zschau; Andreas N. Küppers, eds. (2002-11-18). Early Warning Systems for Natural Disaster Reduction.  
  13. ^ Corkill, Edan (2011-04-10). "Japan's seismic nerve center".  
  14. ^ "Organizations with ties to CCEP". CCEP. Retrieved 2011-03-19. 

External links

  • JMA Official website
    • RSMC Tokyo - Typhoon Center
    • Tokyo Volcanic Ash Advisory Center (Tokyo VAAC)
    • WMO World Data Centre for Greenhouse Gases (WDCGG)
    • Tokyo Climate Center (TCC) - one of the WMO Regional Climate Center
    • Northwest Pacific Tsunami Advisory Center (NWPTAC)
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