2026-08-20T14:00:00Z 通常 気象庁本庁 気象庁 2026-08-20T23:00:00+09:00 2026-08-21T00:00:00+09:00 2026-08-21T18:00:00+09:00 511 発表 1 降灰予報 1.1_0 　現在、諏訪之瀬島は噴火警戒レベル２（火口周辺規制）です。諏訪之瀬島で噴火が発生した場合には、２１日０９時から１２時までは火口から北西方向に降灰が予想されます。 降灰予報（定時） 06 諏訪之瀬島 511 降灰 70 鹿児島県十島村 4630400 小さな噴石の落下 75 鹿児島県十島村 4630400 降灰予報（定時） 06 諏訪之瀬島 511 +2938.30+12942.83+796/ 降灰 70 鹿児島県十島村 4630400 小さな噴石の落下 75 鹿児島県十島村 4630400 2026-08-21T00:00:00+09:00 2026-08-21T03:00:00+09:00 降灰 70 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北西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6616+129.6800/+29.6756+129.7000/+29.6600+129.7156/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6805/+29.6577+129.6800/+29.6600+129.6783/+29.6616+129.6800/ 北西 4 鹿児島県十島村 4630400 2026-08-21T03:00:00+09:00 2026-08-21T06:00:00+09:00 降灰 70 +30.0108+129.1600/+30.0139+129.1800/+30.0153+129.2000/+30.0028+129.2200/+30.0000+129.2237/+29.9883+129.2400/+29.9815+129.2600/+29.9800+129.2637/+29.9739+129.2800/+29.9671+129.3000/+29.9600+129.3103/+29.9519+129.3200/+29.9400+129.3376/+29.9389+129.3400/+29.9200+129.3594/+29.9197+129.3600/+29.9114+129.3800/+29.9004+129.4000/+29.9000+129.4007/+29.8800+129.4162/+29.8781+129.4200/+29.8686+129.4400/+29.8600+129.4542/+29.8572+129.4600/+29.8473+129.4800/+29.8400+129.4891/+29.8200+129.4975/+29.8190+129.5000/+29.8051+129.5200/+29.8000+129.5252/+29.7944+129.5400/+29.7800+129.5553/+29.7781+129.5600/+29.7600+129.5794/+29.7598+129.5800/+29.7549+129.6000/+29.7400+129.6153/+29.7387+129.6200/+29.7200+129.6395/+29.7199+129.6400/+29.7169+129.6600/+29.7000+129.6769/+29.6997+129.6800/+29.6918+129.7000/+29.6800+129.7118/+29.6794+129.7200/+29.6600+129.7394/+29.6400+129.7397/+29.6203+129.7200/+29.6201+129.7000/+29.6202+129.6800/+29.6353+129.6600/+29.6400+129.6553/+29.6408+129.6400/+29.6590+129.6200/+29.6600+129.6190/+29.6622+129.6000/+29.6800+129.5800/+29.6845+129.5600/+29.7000+129.5413/+29.7005+129.5400/+29.7070+129.5200/+29.7200+129.5045/+29.7224+129.5000/+29.7333+129.4800/+29.7400+129.4718/+29.7472+129.4600/+29.7600+129.4417/+29.7608+129.4400/+29.7660+129.4200/+29.7800+129.4007/+29.7806+129.4000/+29.7953+129.3800/+29.8000+129.3729/+29.8098+129.3600/+29.8200+129.3400/+29.8200+129.3399/+29.8400+129.3262/+29.8474+129.3200/+29.8574+129.3000/+29.8600+129.2963/+29.8770+129.2800/+29.8800+129.2743/+29.8883+129.2600/+29.9000+129.2481/+29.9096+129.2400/+29.9200+129.2285/+29.9276+129.2200/+29.9400+129.2060/+29.9484+129.2000/+29.9600+129.1896/+29.9749+129.1800/+29.9800+129.1754/+29.9918+129.1600/+30.0000+129.1495/+30.0108+129.1600/ 北西 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6749+129.7000/+29.6600+129.7149/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6809/+29.6600+129.6808/+29.6749+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-21T06:00:00+09:00 2026-08-21T09:00:00+09:00 降灰 70 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北西 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6747+129.7000/+29.6600+129.7147/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6812/+29.6600+129.6815/+29.6747+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-21T09:00:00+09:00 2026-08-21T12:00:00+09:00 降灰 70 +30.1053+129.1600/+30.1000+129.1757/+30.0934+129.1600/+30.1000+129.1478/+30.1053+129.1600/ +30.0909+129.2000/+30.0800+129.2105/+30.0731+129.2200/+30.0636+129.2400/+30.0600+129.2460/+30.0502+129.2600/+30.0400+129.2707/+30.0338+129.2800/+30.0256+129.3000/+30.0200+129.3090/+30.0102+129.3200/+30.0000+129.3277/+29.9904+129.3400/+29.9817+129.3600/+29.9800+129.3623/+29.9600+129.3775/+29.9584+129.3800/+29.9459+129.4000/+29.9400+129.4120/+29.9331+129.4200/+29.9200+129.4282/+29.9106+129.4400/+29.9000+129.4543/+29.8949+129.4600/+29.8800+129.4719/+29.8759+129.4800/+29.8600+129.4987/+29.8591+129.5000/+29.8400+129.5156/+29.8339+129.5200/+29.8200+129.5344/+29.8167+129.5400/+29.8000+129.5571/+29.7985+129.5600/+29.7800+129.5796/+29.7798+129.5800/+29.7705+129.6000/+29.7600+129.6107/+29.7567+129.6200/+29.7400+129.6368/+29.7390+129.6400/+29.7200+129.6591/+29.7197+129.6600/+29.7021+129.6800/+29.7000+129.6821/+29.6985+129.7000/+29.6800+129.7185/+29.6795+129.7200/+29.6600+129.7395/+29.6400+129.7397/+29.6203+129.7200/+29.6201+129.7000/+29.6208+129.6800/+29.6400+129.6608/+29.6403+129.6600/+29.6600+129.6403/+29.6603+129.6400/+29.6691+129.6200/+29.6800+129.6091/+29.6831+129.6000/+29.7000+129.5828/+29.7018+129.5800/+29.7200+129.5606/+29.7204+129.5600/+29.7304+129.5400/+29.7400+129.5303/+29.7456+129.5200/+29.7600+129.5041/+29.7631+129.5000/+29.7800+129.4820/+29.7817+129.4800/+29.7865+129.4600/+29.8000+129.4412/+29.8017+129.4400/+29.8192+129.4200/+29.8200+129.4193/+29.8320+129.4000/+29.8400+129.3916/+29.8491+129.3800/+29.8600+129.3641/+29.8662+129.3600/+29.8800+129.3451/+29.8836+129.3400/+29.9000+129.3226/+29.9032+129.3200/+29.9200+129.3017/+29.9218+129.3000/+29.9362+129.2800/+29.9400+129.2765/+29.9600+129.2630/+29.9636+129.2600/+29.9789+129.2400/+29.9800+129.2386/+30.0000+129.2207/+30.0025+129.2200/+30.0200+129.2111/+30.0281+129.2000/+30.0400+129.1874/+30.0588+129.1800/+30.0600+129.1794/+30.0737+129.1800/+30.0800+129.1807/+30.0909+129.2000/ 北西 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6756+129.7000/+29.6600+129.7155/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6812/+29.6600+129.6814/+29.6756+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-21T12:00:00+09:00 2026-08-21T15:00:00+09:00 降灰 70 +30.0418+129.2400/+30.0400+129.2451/+30.0351+129.2600/+30.0265+129.2800/+30.0241+129.3000/+30.0200+129.3076/+30.0110+129.3200/+30.0000+129.3303/+29.9934+129.3400/+29.9849+129.3600/+29.9800+129.3663/+29.9634+129.3800/+29.9600+129.3819/+29.9479+129.4000/+29.9400+129.4159/+29.9366+129.4200/+29.9200+129.4308/+29.9131+129.4400/+29.9000+129.4590/+29.8992+129.4600/+29.8800+129.4776/+29.8788+129.4800/+29.8659+129.5000/+29.8600+129.5093/+29.8400+129.5173/+29.8373+129.5200/+29.8200+129.5378/+29.8187+129.5400/+29.8000+129.5597/+29.7998+129.5600/+29.7870+129.5800/+29.7800+129.5868/+29.7739+129.6000/+29.7600+129.6146/+29.7580+129.6200/+29.7400+129.6393/+29.7398+129.6400/+29.7200+129.6599/+29.7200+129.6600/+29.7091+129.6800/+29.7000+129.6890/+29.6984+129.7000/+29.6800+129.7184/+29.6796+129.7200/+29.6600+129.7396/+29.6400+129.7398/+29.6202+129.7200/+29.6201+129.7000/+29.6207+129.6800/+29.6400+129.6607/+29.6404+129.6600/+29.6600+129.6403/+29.6603+129.6400/+29.6691+129.6200/+29.6800+129.6091/+29.6832+129.6000/+29.7000+129.5828/+29.7018+129.5800/+29.7200+129.5608/+29.7206+129.5600/+29.7314+129.5400/+29.7400+129.5310/+29.7473+129.5200/+29.7600+129.5063/+29.7645+129.5000/+29.7800+129.4825/+29.7818+129.4800/+29.7882+129.4600/+29.8000+129.4438/+29.8059+129.4400/+29.8200+129.4251/+29.8230+129.4200/+29.8395+129.4000/+29.8400+129.3993/+29.8521+129.3800/+29.8600+129.3691/+29.8739+129.3600/+29.8800+129.3537/+29.8889+129.3400/+29.9000+129.3282/+29.9108+129.3200/+29.9200+129.3089/+29.9278+129.3000/+29.9400+129.2848/+29.9480+129.2800/+29.9600+129.2732/+29.9800+129.2613/+29.9815+129.2600/+30.0000+129.2403/+30.0087+129.2400/+30.0200+129.2396/+30.0400+129.2373/+30.0418+129.2400/ 北西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6751+129.7000/+29.6600+129.7150/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6812/+29.6600+129.6818/+29.6751+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-21T15:00:00+09:00 2026-08-21T18:00:00+09:00 降灰 70 +30.0207+129.2800/+30.0227+129.3000/+30.0200+129.3042/+30.0075+129.3200/+30.0000+129.3270/+29.9887+129.3400/+29.9800+129.3574/+29.9791+129.3600/+29.9600+129.3788/+29.9591+129.3800/+29.9473+129.4000/+29.9400+129.4135/+29.9345+129.4200/+29.9200+129.4299/+29.9124+129.4400/+29.9000+129.4573/+29.8979+129.4600/+29.8800+129.4765/+29.8784+129.4800/+29.8675+129.5000/+29.8600+129.5121/+29.8400+129.5178/+29.8382+129.5200/+29.8200+129.5389/+29.8193+129.5400/+29.8080+129.5600/+29.8000+129.5672/+29.7926+129.5800/+29.7800+129.5943/+29.7774+129.6000/+29.7600+129.6179/+29.7591+129.6200/+29.7464+129.6400/+29.7400+129.6458/+29.7320+129.6600/+29.7200+129.6711/+29.7143+129.6800/+29.7000+129.6940/+29.6987+129.7000/+29.6800+129.7187/+29.6797+129.7200/+29.6600+129.7396/+29.6400+129.7398/+29.6202+129.7200/+29.6200+129.7000/+29.6207+129.6800/+29.6400+129.6607/+29.6404+129.6600/+29.6600+129.6403/+29.6603+129.6400/+29.6696+129.6200/+29.6800+129.6096/+29.6838+129.6000/+29.7000+129.5833/+29.7019+129.5800/+29.7200+129.5606/+29.7205+129.5600/+29.7296+129.5400/+29.7400+129.5293/+29.7469+129.5200/+29.7600+129.5051/+29.7636+129.5000/+29.7800+129.4816/+29.7812+129.4800/+29.7880+129.4600/+29.8000+129.4429/+29.8037+129.4400/+29.8200+129.4226/+29.8220+129.4200/+29.8392+129.4000/+29.8400+129.3990/+29.8544+129.3800/+29.8600+129.3725/+29.8796+129.3600/+29.8800+129.3595/+29.8940+129.3400/+29.9000+129.3343/+29.9200+129.3214/+29.9226+129.3200/+29.9352+129.3000/+29.9400+129.2941/+29.9600+129.2812/+29.9632+129.2800/+29.9800+129.2721/+29.9972+129.2600/+30.0000+129.2576/+30.0084+129.2600/+30.0200+129.2765/+30.0207+129.2800/ 北西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6743+129.7000/+29.6600+129.7142/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6812/+29.6600+129.6830/+29.6743+129.7000/ 北西 2 鹿児島県十島村 4630400 　現在、諏訪之瀬島は噴火警戒レベル２（火口周辺規制）です。諏訪之瀬島で噴火が発生した場合には、２１日０９時から１２時までは火口から北西方向に降灰が予想されます。 　２１日０時から２１日１８時までに噴火が発生した場合には、以下の方向・距離に降灰及び小さな噴石の落下が予想されます。 　 　時刻　　　　　　　　　　　　火口からの方向　降灰の距離　小さな噴石の距離 　２１日００時から０３時まで　北西　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　２１日０３時から０６時まで　北西　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　２１日０６時から０９時まで　北西　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　２１日０９時から１２時まで　北西　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　２１日１２時から１５時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　２１日１５時から１８時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　 　期間中に噴火が発生した場合には、以下の市町村に降灰が予想されます。 　鹿児島県：十島村 　 　噴煙が火口縁上１０００ｍまで上がった場合の火山灰及び小さな噴石の落下範囲を示しています。 　噴火発生時、小さな噴石の落下が予想される範囲内では、屋内や頑丈な屋根の下などに移動してください。