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This site collects historically large precipitation events in Japan by ranking precipitation data from AMeDAS. The name of the site is "heavy rain" but it includes not only rains but also snows. The latest ranking is also available at AMeRAS (AMeDAS Ranking Service).
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Precipitation - Top 10

Last Updated: 2019-12-31 15:00 (UTC)
1h Precipitation 2h Precipitation 3h Precipitation 6h Precipitation 12h Precipitation 24h Precipitation 48h Precipitation 72h Precipitation Daily Precipitation (JST) Daily Precipitation (UTC)

1h Precipitation

Rank Name Prefecture Precipitation Start End Historical Ranking
1 KATORI Chiba 153.0 1999-10-27 11 (UTC) 1999-10-27 11 (UTC) 1
1 NAGAURADAKE Nagasaki 153.0 1982-07-23 10 (UTC) 1982-07-23 10 (UTC) 1
3 TARAMA Okinawa 152.0 1988-04-28 07 (UTC) 1988-04-28 07 (UTC) 1
4 MAEBARU Fukuoka 147.0 1991-09-13 22 (UTC) 1991-09-13 22 (UTC) 1
5 OKAZAKI Aichi 146.5 2008-08-28 17 (UTC) 2008-08-28 17 (UTC) 1
6 KONIYA Kagoshima 139.5 2011-11-02 00 (UTC) 2011-11-02 00 (UTC) 1
7 YONAHADAKE Okinawa 139.0 1980-09-24 11 (UTC) 1980-09-24 11 (UTC) 1
8 SUSA Yamaguchi 137.5 2013-07-28 03 (UTC) 2013-07-28 03 (UTC) 1
9 MUROTOMISAKI Kochi 135.0 2006-11-26 08 (UTC) 2006-11-26 08 (UTC) 1
10 NAKASUJI Okinawa 132.5 2010-11-18 22 (UTC) 2010-11-18 22 (UTC) 1

2h Precipitation

Rank Name Prefecture Precipitation Start End Historical Ranking
1 TARAMA Okinawa 283.0 1988-04-28 07 (UTC) 1988-04-28 08 (UTC) 1
2 NAGAURADAKE Nagasaki 271.0 1982-07-23 10 (UTC) 1982-07-23 11 (UTC) 1
3 SUSA Yamaguchi 244.5 2013-07-28 02 (UTC) 2013-07-28 03 (UTC) 1
4 NOBORIBETSU Hokkaido 243.0 1983-09-24 18 (UTC) 1983-09-24 19 (UTC) 1
5 OSHIMA Tokyo 236.5 2013-10-15 18 (UTC) 2013-10-15 19 (UTC) 1
6 YONAHADAKE Okinawa 236.0 1980-09-24 11 (UTC) 1980-09-24 12 (UTC) 1
7 KUROISO Tochigi 232.0 1977-09-03 11 (UTC) 1977-09-03 12 (UTC) 1
7 OWASE Mie 232.0 2004-09-28 23 (UTC) 2004-09-29 00 (UTC) 1
7 SHIMABARA Nagasaki 232.0 1988-05-03 07 (UTC) 1988-05-03 08 (UTC) 1
10 KAMAE Oita 226.0 2006-09-16 09 (UTC) 2006-09-16 10 (UTC) 1

3h Precipitation

Rank Name Prefecture Precipitation Start End Historical Ranking
1 TARAMA Okinawa 383.0 1988-04-28 06 (UTC) 1988-04-28 08 (UTC) 1
2 NOBORIBETSU Hokkaido 338.0 1983-09-24 17 (UTC) 1983-09-24 19 (UTC) 1
3 OSHIMA Tokyo 334.0 2013-10-15 18 (UTC) 2013-10-15 20 (UTC) 1
4 NAGAURADAKE Nagasaki 324.0 1982-07-23 10 (UTC) 1982-07-23 12 (UTC) 1
5 OWASE Mie 315.0 2004-09-28 22 (UTC) 2004-09-29 00 (UTC) 1
6 NAGASAKI Nagasaki 313.0 1982-07-23 11 (UTC) 1982-07-23 13 (UTC) 1
7 NAKASUJI Okinawa 312.5 2010-11-18 21 (UTC) 2010-11-18 23 (UTC) 1
8 KUROISO Tochigi 308.0 1977-09-03 10 (UTC) 1977-09-03 12 (UTC) 1
9 YAKUSHIMA Kagoshima 299.0 1985-06-07 10 (UTC) 1985-06-07 12 (UTC) 1
10 YONAHADAKE Okinawa 292.0 1980-09-24 10 (UTC) 1980-09-24 12 (UTC) 1

6h Precipitation

Rank Name Prefecture Precipitation Start End Historical Ranking
1 OSHIMA Tokyo 549.5 2013-10-15 15 (UTC) 2013-10-15 20 (UTC) 1
2 TARAMA Okinawa 502.0 1988-04-28 04 (UTC) 1988-04-28 09 (UTC) 1
3 OWASE Mie 497.0 2004-09-28 22 (UTC) 2004-09-29 03 (UTC) 1
4 NOBORIBETSU Hokkaido 467.0 1983-09-24 14 (UTC) 1983-09-24 19 (UTC) 1
5 OWASE Mie 463.5 2008-09-18 12 (UTC) 2008-09-18 17 (UTC) 2
6 ASO-OTOHIME Kumamoto 459.5 2012-07-11 17 (UTC) 2012-07-11 22 (UTC) 1
7 OWASE Mie 452.0 2001-10-09 18 (UTC) 2001-10-09 23 (UTC) 3
8 KOCHI Kochi 444.0 1998-09-24 12 (UTC) 1998-09-24 17 (UTC) 1
9 GOMEN Kochi 443.0 1998-09-24 14 (UTC) 1998-09-24 19 (UTC) 1
10 NAGASAKI Nagasaki 432.0 1982-07-23 10 (UTC) 1982-07-23 15 (UTC) 1

12h Precipitation

Rank Name Prefecture Precipitation Start End Historical Ranking
1 HAKONE Kanagawa 711.0 2019-10-12 00 (UTC) 2019-10-12 11 (UTC) 1
2 KOCHI Kochi 695.0 1998-09-24 09 (UTC) 1998-09-24 20 (UTC) 1
3 OSHIMA Tokyo 694.5 2013-10-15 10 (UTC) 2013-10-15 21 (UTC) 1
4 OWASE Mie 643.0 2004-09-28 16 (UTC) 2004-09-29 03 (UTC) 1
5 GOMEN Kochi 636.0 1998-09-24 10 (UTC) 1998-09-24 21 (UTC) 1
6 SHIGETO Kochi 635.0 1998-09-24 10 (UTC) 1998-09-24 21 (UTC) 1
7 EBINO Miyazaki 622.0 1997-09-15 16 (UTC) 1997-09-16 03 (UTC) 1
8 YANASE Kochi 620.0 2014-08-09 10 (UTC) 2014-08-09 21 (UTC) 1
9 YONAGUNIJIMA Okinawa 616.5 2008-09-13 01 (UTC) 2008-09-13 12 (UTC) 1
10 MIKADO Miyazaki 594.0 2005-09-05 14 (UTC) 2005-09-06 01 (UTC) 1

24h Precipitation

Rank Name Prefecture Precipitation Start End Historical Ranking
1 SHIGETO Kochi 979.0 1998-09-23 22 (UTC) 1998-09-24 21 (UTC) 1
2 HAKONE Kanagawa 942.5 2019-10-11 13 (UTC) 2019-10-12 12 (UTC) 1
3 MIKADO Miyazaki 932.0 2005-09-05 05 (UTC) 2005-09-06 04 (UTC) 1
4 HIDEGADAKE Nara 922.0 1982-07-31 14 (UTC) 1982-08-01 13 (UTC) 1
5 EBINO Miyazaki 878.0 2005-09-05 06 (UTC) 2005-09-06 05 (UTC) 1
6 MIYAGAWA Mie 869.0 2011-09-03 02 (UTC) 2011-09-04 01 (UTC) 1
7 GOMEN Kochi 862.0 1998-09-23 22 (UTC) 1998-09-24 21 (UTC) 1
8 KOCHI Kochi 861.0 1998-09-23 21 (UTC) 1998-09-24 20 (UTC) 1
9 YANASE Kochi 860.0 2011-07-18 13 (UTC) 2011-07-19 12 (UTC) 1
10 YANASE Kochi 858.5 2014-08-09 01 (UTC) 2014-08-10 00 (UTC) 2

48h Precipitation

Rank Name Prefecture Precipitation Start End Historical Ranking
1 MIYAGAWA Mie 1346.0 2011-09-02 08 (UTC) 2011-09-04 07 (UTC) 1
2 KAMIKITAYAMA Nara 1343.0 2011-09-02 00 (UTC) 2011-09-03 23 (UTC) 1
3 MIKADO Miyazaki 1238.0 2005-09-04 08 (UTC) 2005-09-06 07 (UTC) 1
4 EBINO Miyazaki 1207.0 2005-09-04 09 (UTC) 2005-09-06 08 (UTC) 1
5 YANASE Kochi 1168.0 2011-07-17 15 (UTC) 2011-07-19 14 (UTC) 1
6 KAZEYA Nara 1154.5 2011-09-01 23 (UTC) 2011-09-03 22 (UTC) 1
7 ASAHIMARU Tokushima 1154.0 2004-07-30 22 (UTC) 2004-08-01 21 (UTC) 1
8 MITATE Miyazaki 1100.0 2005-09-04 11 (UTC) 2005-09-06 10 (UTC) 1
9 UCHINOMI Kagawa 1076.0 1976-09-10 02 (UTC) 1976-09-12 01 (UTC) 1
10 YANASE Kochi 1073.0 2014-08-08 01 (UTC) 2014-08-10 00 (UTC) 2

72h Precipitation

Rank Name Prefecture Precipitation Start End Historical Ranking
1 KAMIKITAYAMA Nara 1650.5 2011-09-01 01 (UTC) 2011-09-04 00 (UTC) 1
2 MIYAGAWA Mie 1517.0 2011-09-01 09 (UTC) 2011-09-04 08 (UTC) 1
3 MIKADO Miyazaki 1322.0 2005-09-03 15 (UTC) 2005-09-06 12 (UTC) 1
4 YANASE Kochi 1316.0 2018-07-04 05 (UTC) 2018-07-07 04 (UTC) 1
5 EBINO Miyazaki 1305.0 2005-09-03 22 (UTC) 2005-09-06 21 (UTC) 1
6 KAZEYA Nara 1302.5 2011-09-01 01 (UTC) 2011-09-04 00 (UTC) 1
7 ASAHIMARU Tokushima 1241.0 2004-07-30 06 (UTC) 2004-08-02 05 (UTC) 1
8 UCHINOMI Kagawa 1231.0 1976-09-09 12 (UTC) 1976-09-12 11 (UTC) 1
9 HIDEGADAKE Nara 1229.0 1992-08-17 01 (UTC) 1992-08-20 00 (UTC) 1
10 YANASE Kochi 1199.0 2011-07-17 07 (UTC) 2011-07-20 06 (UTC) 2

Daily Precipitation (JST)

Rank Name Prefecture Precipitation Start End Historical Ranking
1 HAKONE Kanagawa 922.5 2019-10-11 16 (UTC) 2019-10-12 15 (UTC) 1
2 YANASE Kochi 851.5 2011-07-18 16 (UTC) 2011-07-19 15 (UTC) 1
3 HIDEGADAKE Nara 844.0 1982-07-31 16 (UTC) 1982-08-01 15 (UTC) 1
4 UCHINOMI Kagawa 790.0 1976-09-10 16 (UTC) 1976-09-11 15 (UTC) 1
5 HIDEGADAKE Nara 789.0 2001-08-20 16 (UTC) 2001-08-21 15 (UTC) 2
6 YONAGUNIJIMA Okinawa 765.0 2008-09-12 16 (UTC) 2008-09-13 15 (UTC) 1
7 MIYAGAWA Mie 764.0 2011-07-18 16 (UTC) 2011-07-19 15 (UTC) 1
8 JOJUSHA Ehime 757.0 2005-09-05 16 (UTC) 2005-09-06 15 (UTC) 1
9 OWASE Mie 741.0 2004-09-28 16 (UTC) 2004-09-29 15 (UTC) 1
10 SHIGETO Kochi 735.0 1998-09-23 16 (UTC) 1998-09-24 15 (UTC) 1

Daily Precipitation (UTC)

Rank Name Prefecture Precipitation Start End Historical Ranking
1 SHIGETO Kochi 976.0 1998-09-24 01 (UTC) 1998-09-25 00 (UTC) 1
2 MIKADO Miyazaki 898.0 2005-09-05 01 (UTC) 2005-09-06 00 (UTC) 1
3 YANASE Kochi 858.5 2014-08-09 01 (UTC) 2014-08-10 00 (UTC) 1
4 GOMEN Kochi 858.0 1998-09-24 01 (UTC) 1998-09-25 00 (UTC) 1
5 KOCHI Kochi 850.0 1998-09-24 01 (UTC) 1998-09-25 00 (UTC) 1
6 MIYAGAWA Mie 837.5 2011-09-03 01 (UTC) 2011-09-04 00 (UTC) 1
7 OSHIMA Tokyo 822.5 2013-10-15 01 (UTC) 2013-10-16 00 (UTC) 1
8 MIHAMA Mie 796.0 2011-09-03 01 (UTC) 2011-09-04 00 (UTC) 1
9 EBINO Miyazaki 791.0 2005-09-05 01 (UTC) 2005-09-06 00 (UTC) 1
10 FUKUHARAASAHI Tokushima 750.5 2011-09-02 01 (UTC) 2011-09-03 00 (UTC) 1
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