2026-08-17T17:00:00Z 通常 気象庁本庁 気象庁 2026-08-18T02:00:00+09:00 2026-08-18T03:00:00+09:00 2026-08-18T21:00:00+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 2026-08-18T03:00:00+09:00 2026-08-18T06:00:00+09:00 降灰 70 +29.9286+129.3200/+29.9200+129.3372/+29.9177+129.3400/+29.9111+129.3600/+29.9000+129.3787/+29.8991+129.3800/+29.8844+129.4000/+29.8800+129.4037/+29.8712+129.4200/+29.8600+129.4373/+29.8585+129.4400/+29.8469+129.4600/+29.8400+129.4693/+29.8262+129.4800/+29.8200+129.4837/+29.8102+129.5000/+29.8000+129.5107/+29.7959+129.5200/+29.7800+129.5383/+29.7792+129.5400/+29.7699+129.5600/+29.7600+129.5703/+29.7563+129.5800/+29.7400+129.5981/+29.7395+129.6000/+29.7323+129.6200/+29.7200+129.6325/+29.7187+129.6400/+29.7000+129.6598/+29.7000+129.6600/+29.6991+129.6800/+29.6800+129.6991/+29.6800+129.7000/+29.6795+129.7200/+29.6600+129.7395/+29.6400+129.7399/+29.6201+129.7200/+29.6200+129.7000/+29.6201+129.6800/+29.6266+129.6600/+29.6400+129.6466/+29.6405+129.6400/+29.6477+129.6200/+29.6600+129.6075/+29.6612+129.6000/+29.6703+129.5800/+29.6800+129.5699/+29.6823+129.5600/+29.6934+129.5400/+29.7000+129.5320/+29.7031+129.5200/+29.7192+129.5000/+29.7200+129.4991/+29.7270+129.4800/+29.7400+129.4631/+29.7425+129.4600/+29.7600+129.4418/+29.7614+129.4400/+29.7642+129.4200/+29.7772+129.4000/+29.7800+129.3968/+29.8000+129.3811/+29.8013+129.3800/+29.8171+129.3600/+29.8200+129.3560/+29.8361+129.3400/+29.8400+129.3373/+29.8600+129.3275/+29.8706+129.3200/+29.8800+129.3102/+29.9000+129.3057/+29.9200+129.3054/+29.9286+129.3200/ 北西 50 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6660+129.7000/+29.6600+129.7060/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6213+129.7000/+29.6400+129.6810/+29.6600+129.6913/+29.6660+129.7000/ 北西 2 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 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北西 50 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6640+129.7000/+29.6600+129.7040/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6805/+29.6600+129.6932/+29.6640+129.7000/ 北西 2 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 +29.8222+129.2200/+29.8279+129.2400/+29.8243+129.2600/+29.8221+129.2800/+29.8200+129.2968/+29.8196+129.3000/+29.8171+129.3200/+29.8082+129.3400/+29.8000+129.3553/+29.7990+129.3600/+29.7935+129.3800/+29.7884+129.4000/+29.7817+129.4200/+29.7800+129.4237/+29.7685+129.4400/+29.7600+129.4459/+29.7573+129.4600/+29.7524+129.4800/+29.7400+129.4964/+29.7394+129.5000/+29.7375+129.5200/+29.7331+129.5400/+29.7200+129.5553/+29.7195+129.5600/+29.7183+129.5800/+29.7135+129.6000/+29.7000+129.6142/+29.6997+129.6200/+29.6994+129.6400/+29.6959+129.6600/+29.6800+129.6760/+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/+29.6232+129.6400/+29.6400+129.6226/+29.6402+129.6200/+29.6407+129.6000/+29.6431+129.5800/+29.6580+129.5600/+29.6600+129.5575/+29.6610+129.5400/+29.6635+129.5200/+29.6703+129.5000/+29.6800+129.4864/+29.6809+129.4800/+29.6838+129.4600/+29.6907+129.4400/+29.7000+129.4216/+29.7003+129.4200/+29.7018+129.4000/+29.7069+129.3800/+29.7118+129.3600/+29.7200+129.3427/+29.7214+129.3400/+29.7323+129.3200/+29.7354+129.3000/+29.7400+129.2881/+29.7443+129.2800/+29.7523+129.2600/+29.7600+129.2474/+29.7654+129.2400/+29.7800+129.2207/+29.7807+129.2200/+29.7933+129.2000/+29.8000+129.1894/+29.8135+129.2000/+29.8200+129.2122/+29.8222+129.2200/ 西 50 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6596+129.7000/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6803/+29.6596+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 +29.8076+129.1400/+29.8128+129.1600/+29.8146+129.1800/+29.8160+129.2000/+29.8124+129.2200/+29.8063+129.2400/+29.8000+129.2534/+29.7981+129.2600/+29.7943+129.2800/+29.7923+129.3000/+29.7908+129.3200/+29.7832+129.3400/+29.7800+129.3487/+29.7771+129.3600/+29.7692+129.3800/+29.7600+129.3964/+29.7595+129.4000/+29.7574+129.4200/+29.7475+129.4400/+29.7400+129.4500/+29.7387+129.4600/+29.7367+129.4800/+29.7325+129.5000/+29.7200+129.5161/+29.7195+129.5200/+29.7185+129.5400/+29.7167+129.5600/+29.7059+129.5800/+29.7000+129.5863/+29.6996+129.6000/+29.6993+129.6200/+29.6976+129.6400/+29.6800+129.6584/+29.6800+129.6600/+29.6799+129.6800/+29.6799+129.7000/+29.6788+129.7200/+29.6600+129.7388/+29.6400+129.7398/+29.6202+129.7200/+29.6200+129.7000/+29.6200+129.6800/+29.6201+129.6600/+29.6208+129.6400/+29.6278+129.6200/+29.6400+129.6071/+29.6403+129.6000/+29.6408+129.5800/+29.6423+129.5600/+29.6483+129.5400/+29.6600+129.5240/+29.6604+129.5200/+29.6618+129.5000/+29.6645+129.4800/+29.6715+129.4600/+29.6800+129.4453/+29.6807+129.4400/+29.6825+129.4200/+29.6800+129.4059/+29.6758+129.4000/+29.6800+129.3906/+29.6841+129.3800/+29.6937+129.3600/+29.7000+129.3512/+29.7027+129.3400/+29.7064+129.3200/+29.7046+129.3000/+29.7200+129.2805/+29.7203+129.2800/+29.7265+129.2600/+29.7331+129.2400/+29.7386+129.2200/+29.7400+129.2152/+29.7525+129.2000/+29.7600+129.1884/+29.7672+129.1800/+29.7795+129.1600/+29.7800+129.1592/+29.7905+129.1400/+29.8000+129.1272/+29.8076+129.1400/ 西 60 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+129.6802/+29.6597+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 +29.8054+129.1200/+29.8102+129.1400/+29.8109+129.1600/+29.8090+129.1800/+29.8071+129.2000/+29.8000+129.2187/+29.7991+129.2200/+29.7930+129.2400/+29.7911+129.2600/+29.7901+129.2800/+29.7884+129.3000/+29.7867+129.3200/+29.7800+129.3332/+29.7765+129.3400/+29.7695+129.3600/+29.7600+129.3749/+29.7591+129.3800/+29.7569+129.4000/+29.7550+129.4200/+29.7400+129.4382/+29.7394+129.4400/+29.7371+129.4600/+29.7337+129.4800/+29.7240+129.5000/+29.7200+129.5055/+29.7190+129.5200/+29.7177+129.5400/+29.7138+129.5600/+29.7000+129.5768/+29.6998+129.5800/+29.6994+129.6000/+29.6990+129.6200/+29.6956+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/+29.6226+129.6200/+29.6375+129.6000/+29.6400+129.5971/+29.6405+129.5800/+29.6412+129.5600/+29.6430+129.5400/+29.6491+129.5200/+29.6600+129.5033/+29.6603+129.5000/+29.6616+129.4800/+29.6641+129.4600/+29.6691+129.4400/+29.6770+129.4200/+29.6693+129.4000/+29.6763+129.3800/+29.6800+129.3695/+29.6825+129.3600/+29.6898+129.3400/+29.7000+129.3226/+29.7007+129.3200/+29.7000+129.3158/+29.6951+129.3000/+29.7000+129.2846/+29.7020+129.2800/+29.7106+129.2600/+29.7200+129.2474/+29.7251+129.2400/+29.7329+129.2200/+29.7378+129.2000/+29.7400+129.1937/+29.7504+129.1800/+29.7600+129.1664/+29.7676+129.1600/+29.7800+129.1425/+29.7812+129.1400/+29.7929+129.1200/+29.8000+129.1053/+29.8054+129.1200/ 西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6613+129.7000/+29.6600+129.7013/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6801/+29.6600+129.6951/+29.6613+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 +29.8022+129.1200/+29.8056+129.1400/+29.8068+129.1600/+29.8065+129.1800/+29.8061+129.2000/+29.8000+129.2155/+29.7976+129.2200/+29.7926+129.2400/+29.7895+129.2600/+29.7873+129.2800/+29.7843+129.3000/+29.7809+129.3200/+29.7800+129.3219/+29.7717+129.3400/+29.7643+129.3600/+29.7600+129.3665/+29.7576+129.3800/+29.7555+129.4000/+29.7533+129.4200/+29.7400+129.4351/+29.7381+129.4400/+29.7352+129.4600/+29.7297+129.4800/+29.7200+129.4978/+29.7198+129.5000/+29.7183+129.5200/+29.7162+129.5400/+29.7111+129.5600/+29.7000+129.5734/+29.6996+129.5800/+29.6992+129.6000/+29.6985+129.6200/+29.6928+129.6400/+29.6800+129.6531/+29.6799+129.6600/+29.6799+129.6800/+29.6799+129.7000/+29.6783+129.7200/+29.6600+129.7383/+29.6400+129.7397/+29.6203+129.7200/+29.6200+129.7000/+29.6200+129.6800/+29.6201+129.6600/+29.6203+129.6400/+29.6210+129.6200/+29.6233+129.6000/+29.6306+129.5800/+29.6400+129.5670/+29.6404+129.5600/+29.6412+129.5400/+29.6424+129.5200/+29.6454+129.5000/+29.6523+129.4800/+29.6600+129.4613/+29.6601+129.4600/+29.6616+129.4400/+29.6652+129.4200/+29.6628+129.4000/+29.6679+129.3800/+29.6724+129.3600/+29.6800+129.3401/+29.6800+129.3400/+29.6889+129.3200/+29.6923+129.3000/+29.6995+129.2800/+29.7000+129.2783/+29.7066+129.2600/+29.7195+129.2400/+29.7200+129.2390/+29.7268+129.2200/+29.7314+129.2000/+29.7399+129.1800/+29.7400+129.1797/+29.7599+129.1600/+29.7600+129.1598/+29.7800+129.1466/+29.7850+129.1400/+29.7961+129.1200/+29.8000+129.1098/+29.8022+129.1200/ 西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6617+129.7000/+29.6600+129.7017/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6386+129.6800/+29.6400+129.6781/+29.6496+129.6800/+29.6600+129.6894/+29.6617+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に降灰が予想されます。 　１８日３時から１８日２１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０３時から０６時まで　北西　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１８日０６時から０９時まで　北西　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　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　　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。