2026-08-17T20:00:00Z 通常 気象庁本庁 気象庁 2026-08-18T05:00:00+09:00 2026-08-18T06:00:00+09:00 2026-08-19T00:00:00+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、１８日０９時から１２時までは火口から西方向、１８日２１時から２４時までは火口から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 2026-08-18T06:00:00+09:00 2026-08-18T09:00:00+09:00 降灰 70 +29.8956+129.2800/+29.8932+129.3000/+29.8906+129.3200/+29.8800+129.3354/+29.8774+129.3400/+29.8703+129.3600/+29.8641+129.3800/+29.8600+129.3855/+29.8518+129.4000/+29.8437+129.4200/+29.8400+129.4265/+29.8333+129.4400/+29.8200+129.4560/+29.8186+129.4600/+29.8000+129.4799/+29.8000+129.4800/+29.7938+129.5000/+29.7800+129.5155/+29.7785+129.5200/+29.7703+129.5400/+29.7600+129.5512/+29.7577+129.5600/+29.7410+129.5800/+29.7400+129.5810/+29.7372+129.6000/+29.7200+129.6183/+29.7197+129.6200/+29.7171+129.6400/+29.7000+129.6574/+29.6998+129.6600/+29.6985+129.6800/+29.6800+129.6985/+29.6800+129.7000/+29.6794+129.7200/+29.6600+129.7394/+29.6400+129.7398/+29.6202+129.7200/+29.6200+129.7000/+29.6201+129.6800/+29.6231+129.6600/+29.6400+129.6431/+29.6404+129.6400/+29.6429+129.6200/+29.6600+129.6019/+29.6605+129.6000/+29.6633+129.5800/+29.6800+129.5606/+29.6802+129.5600/+29.6839+129.5400/+29.6963+129.5200/+29.7000+129.5152/+29.7040+129.5000/+29.7196+129.4800/+29.7200+129.4795/+29.7270+129.4600/+29.7400+129.4407/+29.7403+129.4400/+29.7410+129.4200/+29.7573+129.4000/+29.7600+129.3971/+29.7695+129.3800/+29.7800+129.3622/+29.7818+129.3600/+29.7940+129.3400/+29.8000+129.3327/+29.8124+129.3200/+29.8200+129.3069/+29.8253+129.3000/+29.8400+129.2863/+29.8548+129.2800/+29.8600+129.2754/+29.8800+129.2661/+29.8956+129.2800/ 北西 50 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6598+129.7000/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6213+129.7000/+29.6400+129.6805/+29.6598+129.7000/ 南西 1 鹿児島県十島村 4630400 2026-08-18T09:00:00+09:00 2026-08-18T12:00:00+09:00 降灰 70 +29.8216+129.2200/+29.8312+129.2400/+29.8300+129.2600/+29.8278+129.2800/+29.8253+129.3000/+29.8234+129.3200/+29.8200+129.3344/+29.8184+129.3400/+29.8076+129.3600/+29.8000+129.3768/+29.7989+129.3800/+29.7938+129.4000/+29.7885+129.4200/+29.7800+129.4398/+29.7799+129.4400/+29.7600+129.4582/+29.7596+129.4600/+29.7563+129.4800/+29.7496+129.5000/+29.7400+129.5124/+29.7388+129.5200/+29.7363+129.5400/+29.7253+129.5600/+29.7200+129.5657/+29.7190+129.5800/+29.7168+129.6000/+29.7000+129.6185/+29.6999+129.6200/+29.6995+129.6400/+29.6980+129.6600/+29.6800+129.6782/+29.6800+129.6800/+29.6799+129.7000/+29.6791+129.7200/+29.6600+129.7391/+29.6400+129.7398/+29.6202+129.7200/+29.6200+129.7000/+29.6201+129.6800/+29.6203+129.6600/+29.6234+129.6400/+29.6400+129.6225/+29.6402+129.6200/+29.6409+129.6000/+29.6438+129.5800/+29.6575+129.5600/+29.6600+129.5572/+29.6616+129.5400/+29.6652+129.5200/+29.6778+129.5000/+29.6800+129.4972/+29.6825+129.4800/+29.6877+129.4600/+29.7000+129.4403/+29.7001+129.4400/+29.7033+129.4200/+29.7050+129.4000/+29.7111+129.3800/+29.7197+129.3600/+29.7200+129.3594/+29.7280+129.3400/+29.7385+129.3200/+29.7400+129.3030/+29.7403+129.3000/+29.7522+129.2800/+29.7600+129.2679/+29.7658+129.2600/+29.7781+129.2400/+29.7800+129.2349/+29.7881+129.2200/+29.8000+129.2013/+29.8200+129.2170/+29.8216+129.2200/ 西 50 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6597+129.7000/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6804/+29.6597+129.7000/ 南西 1 鹿児島県十島村 4630400 2026-08-18T12:00:00+09:00 2026-08-18T15:00:00+09:00 降灰 70 +29.8019+129.1400/+29.8078+129.1600/+29.8096+129.1800/+29.8109+129.2000/+29.8066+129.2200/+29.8000+129.2400/+29.8000+129.2401/+29.7953+129.2600/+29.7928+129.2800/+29.7903+129.3000/+29.7883+129.3200/+29.7800+129.3381/+29.7792+129.3400/+29.7736+129.3600/+29.7600+129.3795/+29.7599+129.3800/+29.7577+129.4000/+29.7558+129.4200/+29.7400+129.4395/+29.7398+129.4400/+29.7374+129.4600/+29.7340+129.4800/+29.7247+129.5000/+29.7200+129.5059/+29.7190+129.5200/+29.7176+129.5400/+29.7134+129.5600/+29.7000+129.5768/+29.6998+129.5800/+29.6994+129.6000/+29.6990+129.6200/+29.6957+129.6400/+29.6800+129.6561/+29.6799+129.6600/+29.6799+129.6800/+29.6799+129.7000/+29.6787+129.7200/+29.6600+129.7387/+29.6400+129.7398/+29.6202+129.7200/+29.6200+129.7000/+29.6200+129.6800/+29.6201+129.6600/+29.6205+129.6400/+29.6228+129.6200/+29.6400+129.6000/+29.6405+129.5800/+29.6414+129.5600/+29.6437+129.5400/+29.6515+129.5200/+29.6600+129.5081/+29.6608+129.5000/+29.6621+129.4800/+29.6642+129.4600/+29.6717+129.4400/+29.6800+129.4223/+29.6803+129.4200/+29.6800+129.4179/+29.6703+129.4000/+29.6793+129.3800/+29.6800+129.3783/+29.6869+129.3600/+29.7000+129.3414/+29.7004+129.3400/+29.7040+129.3200/+29.7008+129.3000/+29.7170+129.2800/+29.7200+129.2743/+29.7249+129.2600/+29.7320+129.2400/+29.7371+129.2200/+29.7400+129.2069/+29.7447+129.2000/+29.7600+129.1845/+29.7688+129.1800/+29.7800+129.1709/+29.7877+129.1600/+29.7980+129.1400/+29.8000+129.1366/+29.8019+129.1400/ 西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6599+129.7000/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6800/+29.6599+129.7000/ 南西 1 鹿児島県十島村 4630400 2026-08-18T15:00:00+09:00 2026-08-18T18:00:00+09:00 降灰 70 +29.8300+129.1400/+29.8344+129.1600/+29.8326+129.1800/+29.8318+129.2000/+29.8295+129.2200/+29.8272+129.2400/+29.8214+129.2600/+29.8200+129.2669/+29.8171+129.2800/+29.8086+129.3000/+29.8000+129.3124/+29.7979+129.3200/+29.7937+129.3400/+29.7894+129.3600/+29.7841+129.3800/+29.7800+129.3928/+29.7783+129.4000/+29.7698+129.4200/+29.7600+129.4267/+29.7557+129.4400/+29.7501+129.4600/+29.7400+129.4744/+29.7393+129.4800/+29.7372+129.5000/+29.7314+129.5200/+29.7200+129.5336/+29.7195+129.5400/+29.7186+129.5600/+29.7159+129.5800/+29.7000+129.5975/+29.6998+129.6000/+29.6996+129.6200/+29.6989+129.6400/+29.6839+129.6600/+29.6800+129.6639/+29.6799+129.6800/+29.6799+129.7000/+29.6787+129.7200/+29.6600+129.7387/+29.6400+129.7398/+29.6202+129.7200/+29.6200+129.7000/+29.6201+129.6800/+29.6202+129.6600/+29.6215+129.6400/+29.6400+129.6208/+29.6401+129.6200/+29.6405+129.6000/+29.6414+129.5800/+29.6465+129.5600/+29.6600+129.5438/+29.6604+129.5400/+29.6616+129.5200/+29.6645+129.5000/+29.6774+129.4800/+29.6800+129.4762/+29.6814+129.4600/+29.6842+129.4400/+29.6904+129.4200/+29.6881+129.4000/+29.7000+129.3862/+29.7017+129.3800/+29.7044+129.3600/+29.7084+129.3400/+29.7176+129.3200/+29.7200+129.3140/+29.7243+129.3000/+29.7298+129.2800/+29.7347+129.2600/+29.7400+129.2461/+29.7432+129.2400/+29.7524+129.2200/+29.7600+129.2094/+29.7673+129.2000/+29.7744+129.1800/+29.7800+129.1664/+29.7829+129.1600/+29.7925+129.1400/+29.8000+129.1270/+29.8200+129.1331/+29.8300+129.1400/ 西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6608+129.7000/+29.6600+129.7008/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6800/+29.6600+129.6968/+29.6608+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-18T18:00:00+09:00 2026-08-18T21:00:00+09:00 降灰 70 +29.8055+129.1200/+29.8099+129.1400/+29.8103+129.1600/+29.8080+129.1800/+29.8057+129.2000/+29.8008+129.2200/+29.8000+129.2214/+29.7945+129.2400/+29.7932+129.2600/+29.7924+129.2800/+29.7903+129.3000/+29.7883+129.3200/+29.7800+129.3363/+29.7782+129.3400/+29.7723+129.3600/+29.7660+129.3800/+29.7600+129.3893/+29.7583+129.4000/+29.7562+129.4200/+29.7451+129.4400/+29.7400+129.4479/+29.7385+129.4600/+29.7360+129.4800/+29.7318+129.5000/+29.7200+129.5177/+29.7198+129.5200/+29.7184+129.5400/+29.7161+129.5600/+29.7044+129.5800/+29.7000+129.5849/+29.6995+129.6000/+29.6992+129.6200/+29.6971+129.6400/+29.6800+129.6579/+29.6799+129.6600/+29.6799+129.6800/+29.6799+129.7000/+29.6786+129.7200/+29.6600+129.7386/+29.6400+129.7398/+29.6202+129.7200/+29.6200+129.7000/+29.6200+129.6800/+29.6201+129.6600/+29.6205+129.6400/+29.6223+129.6200/+29.6318+129.6000/+29.6400+129.5898/+29.6404+129.5800/+29.6412+129.5600/+29.6429+129.5400/+29.6473+129.5200/+29.6600+129.5001/+29.6600+129.5000/+29.6614+129.4800/+29.6641+129.4600/+29.6691+129.4400/+29.6774+129.4200/+29.6700+129.4000/+29.6773+129.3800/+29.6800+129.3715/+29.6827+129.3600/+29.6894+129.3400/+29.7000+129.3209/+29.7002+129.3200/+29.7000+129.3181/+29.6956+129.3000/+29.7000+129.2864/+29.7028+129.2800/+29.7105+129.2600/+29.7200+129.2454/+29.7233+129.2400/+29.7322+129.2200/+29.7400+129.2022/+29.7428+129.2000/+29.7570+129.1800/+29.7600+129.1754/+29.7738+129.1600/+29.7800+129.1481/+29.7831+129.1400/+29.7931+129.1200/+29.8000+129.1042/+29.8055+129.1200/ 西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6681+129.7000/+29.6600+129.7081/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6801/+29.6600+129.6827/+29.6681+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-18T21:00:00+09:00 2026-08-19T00:00:00+09:00 降灰 70 +29.8025+129.1000/+29.8052+129.1200/+29.8071+129.1400/+29.8073+129.1600/+29.8062+129.1800/+29.8053+129.2000/+29.8000+129.2143/+29.7973+129.2200/+29.7934+129.2400/+29.7899+129.2600/+29.7872+129.2800/+29.7839+129.3000/+29.7804+129.3200/+29.7800+129.3207/+29.7682+129.3400/+29.7600+129.3568/+29.7595+129.3600/+29.7567+129.3800/+29.7543+129.4000/+29.7518+129.4200/+29.7400+129.4335/+29.7375+129.4400/+29.7334+129.4600/+29.7241+129.4800/+29.7200+129.4865/+29.7189+129.5000/+29.7175+129.5200/+29.7138+129.5400/+29.7027+129.5600/+29.7000+129.5631/+29.6994+129.5800/+29.6990+129.6000/+29.6981+129.6200/+29.6895+129.6400/+29.6800+129.6510/+29.6799+129.6600/+29.6799+129.6800/+29.6799+129.7000/+29.6784+129.7200/+29.6600+129.7384/+29.6400+129.7397/+29.6203+129.7200/+29.6200+129.7000/+29.6200+129.6800/+29.6201+129.6600/+29.6202+129.6400/+29.6207+129.6200/+29.6218+129.6000/+29.6248+129.5800/+29.6325+129.5600/+29.6400+129.5478/+29.6404+129.5400/+29.6412+129.5200/+29.6437+129.5000/+29.6469+129.4800/+29.6531+129.4600/+29.6600+129.4484/+29.6615+129.4400/+29.6635+129.4200/+29.6615+129.4000/+29.6666+129.3800/+29.6716+129.3600/+29.6800+129.3405/+29.6802+129.3400/+29.6897+129.3200/+29.6917+129.3000/+29.6986+129.2800/+29.7000+129.2748/+29.7052+129.2600/+29.7166+129.2400/+29.7200+129.2337/+29.7259+129.2200/+29.7306+129.2000/+29.7398+129.1800/+29.7400+129.1796/+29.7600+129.1616/+29.7643+129.1600/+29.7800+129.1466/+29.7839+129.1400/+29.7919+129.1200/+29.7973+129.1000/+29.8000+129.0938/+29.8025+129.1000/ 西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6689+129.7000/+29.6600+129.7089/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6378+129.6800/+29.6400+129.6770/+29.6496+129.6800/+29.6600+129.6828/+29.6689+129.7000/ 西 3 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、１８日０９時から１２時までは火口から西方向、１８日２１時から２４時までは火口から西方向に降灰が予想されます。 　１８日６時から１８日２４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 　１８日０６時から０９時まで　北西　　　　　　５０ｋｍ　　１ｋｍ　　　　　 　１８日０９時から１２時まで　西　　　　　　　５０ｋｍ　　１ｋｍ　　　　　 　１８日１２時から１５時まで　西　　　　　　　６０ｋｍ　　１ｋｍ　　　　　 　１８日１５時から１８時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１８日１８時から２１時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１８日２１時から２４時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　 　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。