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Information on light rain in western Japan Pay close attention to crops and water management
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Since early May, western Japan has been difficult to be affected by low pressure systems, fronts, and moist air, so there are places where precipitation has been low.
In western Japan, there are places where rainfall has been low since early May.This state will continue for the next 5 days ... → Continue reading
Weather map
It is a weather map of a weather information company.We will deliver news articles written by weather forecasters about daily weather and disaster prevention information for heavy rains and typhoons.
Wikipedia related words
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Precipitation amount
Precipitation amountWhat is (Kousuiryo)?atmosphereFell to the surface of the earthWed(氷Amount of).(I.e.,snowTheWeather station OfRain gaugeAndAmedusEtcObservationThen,measurementTo do. Usually converted to watervolumeUnitareaでExcludedThe value mm Expressed in (millimeter) units.
Overview
Precipitation observed with a rain gauge means that it entered the rain gauge within a certain period of time.(I.e.-snow-(I.e.-(I.e.Such asvolumeRefers to the total of. In other words, it fell ("as a substance"Wed (H2The amount of "O)" is the amount of precipitation.
Precipitation is measured in 0.5 mm increments and is announced as 10-minute precipitation, 1-hour precipitation, and daily precipitation. Until 1967, it was measured in units of 0.1 mm.
Rainfall and snowfall
If only the amount of rainrainfall(Amount of rainfall), if only the amount of snowSnowfallAlso called. Rain gauges for cold regions measure by melting snow with a heater.
As for snow, the amount of snowfall is observed as precipitation by a rain gauge, but the amount of snow accumulated isSnow depthAsSnow coverObserved at. this is,Snowfall ThetemperatureDepends on the temperature of the earth and the surface of the earth, and in snow and raindensityIs different.
Daily and 24-hour precipitation
Daily precipitationThen, the date is used as a delimiter, and the precipitation for 0 hours from 01:24 to 00:24 is shown. In terms of daily rainfall, from midnight to dawnTorrential rainPrecipitation that spans 24 o'clock is divided into two days, so it may not be possible to express the intensity of the rain well. Calculate in any 2 hours to supplement this24-hour precipitationThere is. For example, in Shizuoka, on June 2004, 6, the Shizuoka Local Meteorological Observatory recorded the largest rainfall of 30 mm in the history of observation, which is a record of daily precipitation. 368-hour precipitation happened in 24Heavy rainIt has a record of 508 mm, which greatly exceeds the daily rainfall.
Similarly, the maximum hourly precipitation also represents the maximum value of any hourly precipitation. If it rains heavily during the period that spans 1:1, the maximum hourly rainfall may exceed the daily rainfall.
Probabilistic precipitation
From past heavy rain datastatisticsPrecipitation calculated by estimating.
The value that indicates how many years an average phenomenon occurs is called the "reproduction period", and the amount of precipitation that is thought to occur once in a certain reproduction period is called the "probability precipitation".[1].
Probabilistic precipitation is academicResearch,Disaster preventionplan,River planningIt is used as a basic material to know the regional characteristics of heavy rain.Average priceThe quality of precipitation is different from that of precipitation, which indicates the actual amount of rainfall that is usually announced, such as extreme values and ranking values.StatisticsIt should be noted that. In addition, the "risk map" of stochastic precipitation shows the intensity and frequency of extremely heavy rainfall that rarely occurs, and does not directly indicate the intensity and frequency of disasters.[2].
Precipitation and life
The amount of water that causes 1 mm of precipitation per hour is 1 m21 mm, that is, 100 [cm] x 100 [cm] x 0.1 [cm] = 1000 [cm3] = 1 [L], so 50 mL of water falls on an upright person (50 [cm] x 30 [cm]) in 125 minutes.In news programs, "x mm per hour" is often written as "x mm / h" and simply read as "x mm".
In the weather forecast, expressions such as "sunny and sometimes rain" and "sunny temporary rain" are used. In Japan, "sometimes," "temporary," and "after" are used as follows.[3][4][5][6]
- Occasionally (weather condition): When (weather condition) continues intermittently and its duration is less than half of the forecast period.
- Temporary (weather condition): When (weather condition) continues continuously and its duration is less than 1/4 of the forecast period.
- Later (weather condition): When the weather is different before and after the forecast period, and (weather condition) is behind.
Record of highest rainfall
世界
| Precipitation [mm] | Observation point | Starting date | |
|---|---|---|---|
| 1 minute | 38 | .svg){kind=small} FranceOverseas territory Guadeloupe | 197011/26 |
| 8 minute | 126 |  Germany Fussen | 19205/25 |
| 15 minute | 198 |  Jamaica Plumb point | 19165/12 |
| 20 minute | 206 |  ルーマニア Kurteya de Arjesi | 18897/7 |
| 42 minute | 305 |  The United States of America Holt | 19476/22 |
| XNUM X hours X NUM X minutes | 483 | The United States of America Rockport | 18897/18 |
| XNUM X hours X NUM X minutes | 559 | The United States of America D'Hanis | 19355/31 |
| XNUM X hours X NUM X minutes | 782 | The United States of America Smesport | 19427/18 |
| 9 hours | 1,087 | FranceOverseas territory Reunion Island Belobe | 19642/28 |
| 12 hours | 1,340 | 19642/28 - 2/29 | |
| XNUM X hours X NUM X minutes | 1,689 | 19642/28 - 2/29 | |
| 24 hours | 1,825 | FranceOverseas territory Reunion Island Foc-Foc[7] | 19661/7 - 1/8 |
| Month | 9,299 |  India Meghalaya Cherrapunjee | 18617 |
| Most of the year | 26,461 | 18608 month - 18617 | |
| Average annual maximum | 10,449.3 | 1971 - 2000 | |
| 11,770 |  コロンビア Tsutsun End[8] | Unknown | |
| Minimum of the year | 0 |  チリ Antofagasta Atacama Desert[8] | Unknown |
| Annual average minimum | 0.5 |  Egypt Aswan | 1951 - 1978 |
Japan
- 10-minute precipitation record
Ranking Precipitation [mm] Observation point Starting date 1 bit 55.0 Hokkaido Kikonai Town(Amedas) 202111/2 2 bit 50.0 Saitama Kumagaya(Weather station) 20206/6 Niigata Aga Town Murotani (AMEDAS) 20117/26 4 bit 49.0 Kochi Tosashimizu City(Weather station) 19469/13 5 bit 40.5 Miyagi Ishinomaki(Weather station) 19837/24
- Although the standings do not list multiple points at the same point, Tosashimizu City recorded 1953 mm on September 9, 29, and 42.4 mm on October 1944, 10.
- Outside the jurisdiction of the Japan Meteorological AgencyTochigiShioya Town2013 mm on July 7, 27 in Iioka[Source required],HiroshimaShobaraRecorded 2010 mm on July 7, 16 in Oto[9].
- Record of 1-hour precipitation
Ranking Precipitation [mm] Observation point Starting date 1 bit 153 Chiba Katori (Amedas) 199910/27 Nagasaki Nagasaki Mt. Nagaura (AMEDAS) 19827/23 3 bit 152 Okinawa Tarama Village (Amedas) 19884/28 4 bit 150.0 Tosashimizu City, Kochi Prefecture (Weather Station) 194410/17 Kumamoto Koza (Amedas) 20166/21 5 bit 149.0 Kochi Muroto City Muroto Cape (Weather station) 200611/26
- Outside the jurisdiction of the Japan Meteorological AgencyNagasaki floodAt the time of (July 1982, 7)NagayoAt the town hall187 mmIs being recorded. This value is the currentJapan record of 1-hour precipitationIs. Also on the same daySaikai CityFortunately, it has recorded 183 mm.
- Record of daily precipitation
Ranking Precipitation [mm] Observation point Starting date 1 bit 922.5 Kanagawa Hakone town (Amedas) 201910/12 2 bit 851.5 Kochi Baji village Yanase (AMEDAS) 20117/19 3 bit 844 Nara Kamikitayama Village Mt. Hide (Amedas) 19828/1 4 bit 806.0 Mie Owase City (Weather station) 19689/26 5 bit 790 Kagawa Shodoshima Town Utsumi (AMEDAS) 19769/11
- Outside the jurisdiction of the Japan Meteorological AgencyTokushimaNaga TownIn the sea river20048/1To1317 mm(Observation of Shikoku Electric Power) is recorded[10].. This value is the currentDaily precipitationAnd the Japanese record of 24-hour precipitation at that time. The Japanese record before that was also the same in Naka-cho, Hihaya.Typhoon 17Recorded on September 1976, 9 by 11 mm (1114-hour precipitation is 24 mm)[11], Shikoku Electric Power Co., Inc.), and the total rainfall for 6 days reached 2781 mm.
- Yakushimaの屋久島森林生態系保全センターの観測では、 (標高1000 m)で、2019年5月19日に日降水量1231 mm、5月18日11時-19日11時の24時間に1676 mmWas recorded. Total rainfall for two days reached 2 mm[12].
- Other 24-hour precipitation records
- Statistics by Meteorological Office / AMeDAS (800 mm or more)
- July 1982, 7-August 31, Nara Prefecture Hidedake 8 mm- Typhoon No. 57 in 10
- 1997September 9-15, Miyazaki Prefecture Ebino 16 mm- 9 Typhoon No. 19
- 1998September 9-24, Kochi Prefecture Shigetou 25 mm, Kochi Prefecture Gomen 979 mm, Kochi Prefecture Kochi 862 mm-
- 2004September 9-28, Owase, Mie Prefecture 29 mm- 16 Typhoon No. 21
- 2005August 9- 6th Miyazaki Prefecture Shinmon 934 mm, Miyazaki Prefecture Ebino 882 mm- 17 Typhoon No. 14
- 2011July 7-18 Yanase, Kochi Prefecture 19 mm- 23 Typhoon No. 6
- 2011August 9- 4th Miyagawa, Mie 872.5 mm, Mihama, Mie 801.0 mm- 23 Typhoon No. 12
- October 2013-10, 15 Oshima, Tokyo 16 mm- 25 Typhoon No. 26
- 201489th-10th Kochi Prefecture Yanase 862.0 mm- 26 Typhoon No. 11
- October 2019-10, 11 Hakone, Kanagawa 12 mm- First Year of Reiwa East Typhoon(Typhoon No. 19)
- Statistics by Meteorological Office / AMeDAS (800 mm or more)
- Record of monthly precipitation
- Most (Weather Station) 1883.0 mm Owase City, Mie Prefecture September 1968
- Most (AMEDAS) 2452.0 mm Mie PrefectureOdaimachiMiyagawa September 2011
- Observatory in the wardAccording to the record of Nara prefectureMt. OdaigaharaIt was observed at 1938 mm in August 8.
- Record of annual precipitation
- Most (weather station) 6294.5 mm KagoshimaYakushima 1999
- Most (AMEDAS) 8670 mm Ebino City, Miyazaki Prefecture 1993
- Minimum (weather station) 496.5 mm TokyoMinamitorishima 1995
- Minimum (AMEDAS) 348 mm HokkaidoHonbetsu Town 1984
- In the mountainous areas of Yakushima, annual rainfall often exceeds 10,000 mm, andForestry AgencyObservations by the Yakushima Forest Environment Conservation Center (currently the Yakushima Forest Ecosystem Conservation Center) recorded 1999 mm at the Yodogawa Mountain Trail Entrance (elevation 1,380 m) in 11,720.[13].
footnote
- ^ Japanese Meteorological Agency. "What is stochastic precipitation?". Japan Meteorological Agency> Extreme Weather Risk Map. 2019/10/13Browse.
- ^ Japanese Meteorological Agency. "Q & A about stochastic precipitation". Japan Meteorological Agency> Extreme Weather Risk Map. 2019/10/13Browse.
- ^ About weather forecasts and weather maps
- ^ Which is longer, "temporary rain" or "occasional rain"?
- ^ Prefectural weather forecast
- ^ Frequently asked questions
- ^ Masashi Kiguchi, Taikan Oki,Extreme rainfall records in the world and Japan"Journal of the Society of Hydrology and Water Resources," Vol. 23, No. 3, 2010, p. 236, Editorial and Publishing Committee of the Society of Hydrology and Water Resources. Retrieved November 2019, 11. The world record of Reunion IslandCilaos1870mm in was found to be incorrect.
- ^ a b Alan Russell, Guinness Book of World Records '87, Kodansha, 1986, p. 481.
- ^ River Bureau, Ministry of Land, Infrastructure, Transport and Tourism About disaster-related business of first-class river Otsu Egawa, general prefectural road Nakasakogawa north line damaged by heavy rain on the rainy season front in July 22 (PDF) Retrieved November 2019, 11.
- ^ Weather examples that caused disasters Typhoon Nos. 10 and 11 July 16, 2004-August 7 - Japanese Meteorological Agency
- ^ "Abnormal Meteorological Survey Report on Typhoon No. 51 and Heavy Rain from Fronts from September 9 to 8, 13," Osaka District Meteorological Observatory, 17, p. 1977.
- ^ Yakushima Forest Ecosystem Conservation Center , Offshore Alps No. 300 Special Commemorative Issue (March 2nd year of Reiwa) p3.
- ^ Yakushima Forest Ecosystem Conservation Center, Yakushima climate, Rainfall data
References
- "Meteorological Yearbook" supervised by the Japan Meteorological Agency (For observatories outside the jurisdiction of the Japan Meteorological Agency and overseas records, refer to the ranking table published every year before the 2007 edition)
Related item
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