The five main islands are (from north to south) Hokkaido, Honshu, Shikoku, Kyushu and Okinawa. Four large eruptions between 300,000 and 90,000 years ago. Control the animation using the slide bar found beneath the weather map. [130] The Kuril Islands historically belong to Japan. La Pérouse Strait formed about 60,000 to 11,000 years ago closing the path used by mammoths which had earlier moved to northern Hokkaido. About 80 million of the urban population is heavily concentrated on the Pacific coast of Honshu.[21]. The deepest, and thus the last to close, was the western channel of the Korea Strait. At least 15,000 people died as a result. [89] In 2005, Japan ranked sixth in the world in tonnage of fish caught. Since the Kikai Caldera is submerged, it is unclear how much damage the hot ash clouds would cause if much volcanic ash stays below the ocean surface. In northwest Japan are thick quaternary deposits. [107], Japan has a population of 126.3 million in 2019. This created a very deep lake with a maximum depth of 104 m (341 ft). The Pacific Plate moves under the Okhotsk Plate to the north. It has more than 1,000 species and subspecies. This made Hokkaido the most agriculturally rich prefecture of Japan. [24] Tokyo is at about 35 degrees north latitude, comparable to that of Tehran, Athens, or Las Vegas.[24]. There is controversy as to whether the Sea of Japan became a huge cold inland lake. At least 100 aftershocks registering a 6.0 magnitude or higher have followed the main shock. Most of the population lives on the Pacific coast side of Honshū. Reclamation of 80% to 90% of all the tidal flatland was done. In August, the daily average temperature is around 22 °C (71 °F) in Hokkaido, 24.5 °C (76 °F) in northern Honshu, and 27 °C (81 °F) in the area of Tokyo. Japan extends from 20° to 45° north latitude (Okinotorishima to Benten-jima) and from 122° to 153° east longitude (Yonaguni to Minami Torishima). Depending on the experience you’re after, each season offers its own unique conditions and attractions however, the best time to visit Japan is generally spring or autumn when the weather is fine and mild. Okinawa Prefecture (沖縄県) is the southernmost prefecture of Japan. Shikoku (四国) is the second smallest of the five main islands (after Okinawa island), 18,800 km2 (7,300 sq mi). Kyoto is located in the Yamashiro Basin 827.9 km2 (319.7 sq mi) and Nara is in the Nara Basin 300 km2 (120 sq mi). Beyond the pyroclastic area is volcanic ash that falls from the sky. analysis chart (pdf) wwjp27 rjtd 300000 warning and summary 300000. warning valid 010000. warning is updated every 6 hours. [1], This table shows the land use in 2002. Since the 1960s improvements in construction, flood prevention, high tides detection and early warnings substantially reduced the death toll which rarely exceeds a dozen people per typhoon. [16] In 1991, Japan's Unzen Volcano on Kyushu about 40 km (25 mi) east of Nagasaki, awakened from its 200-year slumber to produce a new lava dome at its summit. It is almost 1,200 km (750 mi) long from Ibaraki Prefecture in the northeast to Fukuoka Prefecture in the southwest. Thus it has not naturally filled with sediment. Except for a few sheltered inland valleys during December and January, precipitation in Japan is above 25 millimetres (1 in) of rainfall equivalent in all months of the year, and in the wettest coastal areas it is above 100 millimetres (4 in) per month throughout the year. [136], As many as 1,500 earthquakes are recorded yearly, and magnitudes of 4 to 6 are common. [24] Seasonal variations in flow have led to extensive development of flood control measures. Various plants and large animals, such as the Palaeoloxodon naumanni migrated into the Japanese archipelago. Approximately 0.7% of the Japanese population lives there. There are three major plains in central Honshū. New Year is one of Japan's three major travel seasons with intensive domestic and international travel activity. East of the undersea mountain ranges are three oceanic trenches: the Kuril–Kamchatka Trench (max depth 10,542 m (34,587 ft)), Japan Trench (max depth 10,375 m (34,039 ft)) and Izu-Ogasawara Trench (max depth 9,810 m (32,190 ft)). It spread over vast areas around the volcano and reached Edo almost 100 kilometres (60 mi) away. [73] The south part of the Japanese archipelago remained as a relatively large landmass. The Japanese archipelago is over 3,000 km (1,900 mi) long in a north-to-southwardly direction from the Sea of Okhotsk to the Philippine Sea in the Pacific Ocean. It is the 7th largest island in the world. The underground area of Kyushu must be monitored, because it is a dangerous area with a potential caldera eruption. [73], The northern part of the Japanese archipelago was further fragmented until orogenesis of the northeastern Japanese archipelago began in the Late Miocene. "Terrestrial invasion of pomatiopsid gastropods in the heavy-snow region of the Japanese Archipelago". In December there is a very pronounced sunshine gradient between the Sea of Japan and Pacific coasts, as the former side can receive less than 30 hours and the Pacific side as much as 180 hours. Yamashita Park in Yokohama City was made with rubble from the great Kantō earthquake in 1923. Amounts range from about six hours per day in the Inland Sea coast and sheltered parts of the Pacific Coast and Kantō Plain to four hours per day on the Sea of Japan coast of Hokkaidō. [9] All of these points are accessible to the public. Seno et al., 1996 Journal of Geophysical Research; Apel et al., 2006 Geophysical Research Letters; CS1 maint: multiple names: authors list (, Okada, A., On the Quaternary faulting along the Median Tectonic Line, in. The sea extends from north to south for more than 2,255 km (1,401 mi) and has a maximum width of about 1,070 km (660 mi).[74]. The highest recorded temperature in Japan was 41.1 °C (106.0 °F) on 23 July 2018, an unverified record of 42.7 °C was taken in Adachi on 20 July 2004. Okinawa and Amami have a subtropical oceanic climate. [24] They are separated from the continent by the Sea of Japan, which serves as a protective barrier. The climate of the Ogasawara Island chain ranges from a humid subtropical climate (Köppen climate classification, The climate of the Ryukyu Islands ranges from humid subtropical climate (Köppen climate classification, The Aira Caldera is 17 kilometers long and 23 km wide located in south Kyushu. [24], The Japanese archipelago has been transformed by humans into a sort of continuous land, in which the four main islands are entirely reachable and passable by rail and road transportation thanks to the construction of huge bridges and tunnels that connect each other and various islands. Select from the other forecast maps (on the right) to view the temperature, cloud cover, wind and precipitation for this country on a large scale … Late 20th and early 21st century projects include artificial islands such as Chubu Centrair International Airport in Ise Bay, Kansai International Airport in the middle of Osaka Bay, Yokohama Hakkeijima Sea Paradise and Wakayama Marina City. Contact us; Support; Advertisers; Explore. However, its climate varies from cool humid continental climate (Köppen climate classification Dfb) in the north such as northern Hokkaido, to warm tropical rainforest climate (Köppen climate classification Af) in the south such as the Yaeyama Islands and Minami-Tori-shima. [8] The 5 main islands are Hokkaido, Honshu, Kyushu, Shikoku and Okinawa. [24] The result is a flow of cold air southeastward across Japan that brings freezing temperatures and heavy snowfalls to the central mountain ranges facing the Sea of Japan, but clear skies to areas fronting on the Pacific.[24]. The U.S. Senate Resolution of April 28, 1952, ratifying of the San Francisco Treaty, explicitly stated that the USSR had no title to the Kurils. Japan's remote location, surrounded by vast seas, rugged, mountainous terrain and steep rivers make it secure against invaders and uncontrolled migration from the Asian continent. [144] The eruption is rated a 5 on the Volcanic Explosivity Index.[145]. [85] In regards to agricultural products, the self-sufficiency rate of most items is less than 100% except for rice. Okinawa Island (四国) is the smallest and most southwestern of the five main islands, 1,206.98 km2 (466.02 sq mi). [103] As of 2017, there are 1,027 Natural Monuments (天然記念物, tennen kinenbutsu) and 410 Places of Scenic Beauty (名勝, meishō). The most protective measure is to stop the hot ash clouds from spreading and devastating areas near the eruption so that people don't need to evacuate. Minami-Tori-shima has a tropical savanna climate (Köppen climate classification Aw) and the highest average temperature in Japan of 25 degrees Celsius. [24] The longest, the Shinano River, which winds through Nagano Prefecture to Niigata Prefecture and flows into the Sea of Japan, is 367 km (228 mi) long. [95], On 3 July 2018, Japan's government pledged to increase renewable energy sources from 15% to 22–24% including wind and solar by 2030. The Tsugaru Strait separates Hokkaido from Honshu. [8][9] This includes the Bonin Islands, Daitō Islands, Minami-Tori-shima, Okinotorishima, the Ryukyu Islands, the Volcano Islands, Nansei Islands, and the Nanpō Islands, as well as numerous islets, of which 430 are inhabited. There are technological hurdles to mine at such extreme depths and to limit the ecological impact. [88], Japan maintains one of the world's largest fishing fleets and accounts for nearly 15% of the global catch (2014). Real-time Risk Map ・Real-time Landslide Risk Map ・Real-time Inundation Risk Map ・Real-time Flood Risk Map: Marine Warnings Weather / Volcano Tropical Cyclone Information Hazardous Wind Watch Extreme High Temperature Forecasts; Earthquakes and Volcanoes Tsunami Warnings/Advisories Earthquake Information … The Korean Peninsula was landlocked on the entire west and south side in the Yellow Plane. Tokyo, Japan visibility is going to be around 8 km i.e. Thus Japan possesses one of the largest ocean territories with a combination of all depths from shallow to very deep sea. These are also called the mainland. These are the 50 largest islands of Japan. Select from the other forecast maps (on the right) to view the temperature, cloud cover, wind and precipitation for this country on a large scale with animation. [7] It is narrow, and no point in Japan is more than 150 km (93 mi) from the sea. [39] After the new site was declared safe following a cleanup operation, Toyosu Market was opened.[40]. [34], There is a risk of contamination on artificial islands with landfill and reclaimed land if there was industry that spilled (toxic) chemicals into the ground. ", "Japan aims for 24% renewable energy but keeps nuclear central", "Table 2.10 Population of Three Major Metropolitan Areas", Japan Statistics Bureau – Keihin'yō Major Metropolitan Area, "Discover the Geography of the 4 Main Islands of Japan", Satellite images of stable night time lights in Japan, "City of the future sinks into the ocean", "M 9.1 – near the east coast of Honshu, Japan", "Devastation as Tsunami Crashes Into Japan", "巨大カルデラ噴火のメカニズムとリスクを発表 (Announce the mechanism and risk of a huge caldera eruption)", "Giant lava dome confirmed in Japan's Kikai Caldera", "NASA is trying to figure out how to contain a supervolcano that could destroy humanity", Annual Report on the Environment in Japan 2006, "Colton's Japan: Nippon, Kiusiu, Sikok, Yesso and the Japanese Kuriles",, Wikipedia articles incorporating a citation from the 1911 Encyclopaedia Britannica with Wikisource reference, Wikipedia articles incorporating text from the United States Geological Survey, Short description is different from Wikidata, Articles with unsourced statements from November 2020, Articles containing Japanese-language text, Articles containing potentially dated statements from 2011, All articles containing potentially dated statements, Articles needing additional references from October 2018, All articles needing additional references, Articles containing potentially dated statements from 2016, Creative Commons Attribution-ShareAlike License, varied; tropical in the south to cool continental in the north, and mountainous areas being. East of the Japanese archipelago are three oceanic trenches. Click to zoom and see all forecast periods: During the Paleolithic period around 20,000 BCE at the height of the Last Glacial Maximum, there was a land bridge between Hokkaido and Sakhalin which linked Japan with the Asian continent. The subduction plates have pulled the Japanese archipelago eastward, created the Sea of Japan and separated it from the Asian continent by back-arc spreading 15 million years ago.[14]. Get the Japan weather forecast. In the January, it goes down to 10℃ (50°F) during the daytime and 2-3℃ (35.6-37.4°F) in the morning and at night. [94] Shinzo Abe’s government seeks to restart the nuclear power plants that meet strict new safety standards and is emphasizing nuclear energy's importance as a base-load electricity source. Mid June to mid July is generally the rainy season in Honshu, Shikoku and Kyushu, excluding Hokkaidō since the seasonal rain front or baiu zensen (梅雨前線) dissipates in northern Honshu before reaching Hokkaido.