2026-09-19T17:00:00Z 通常 気象庁本庁 気象庁 2026-09-20T02:00:00+09:00 2026-09-20T03:00:00+09:00 2026-09-20T21:00:00+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、２０日０９時から１２時までは火口から南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 2026-09-20T03:00:00+09:00 2026-09-20T06:00:00+09:00 降灰 70 +29.6599+129.7000/+29.6599+129.7200/+29.6400+129.7399/+29.6200+129.7399/+29.6000+129.7388/+29.5810+129.7200/+29.5800+129.7198/+29.5600+129.7191/+29.5400+129.7122/+29.5260+129.7000/+29.5200+129.6993/+29.5000+129.6962/+29.4800+129.6819/+29.4776+129.6800/+29.4600+129.6776/+29.4400+129.6718/+29.4253+129.6600/+29.4200+129.6580/+29.4000+129.6527/+29.3815+129.6400/+29.3800+129.6395/+29.3726+129.6400/+29.3600+129.6438/+29.3538+129.6400/+29.3400+129.6311/+29.3236+129.6200/+29.3200+129.6190/+29.3000+129.6133/+29.2800+129.6033/+29.2758+129.6000/+29.2600+129.5929/+29.2400+129.5832/+29.2302+129.5800/+29.2200+129.5758/+29.2000+129.5653/+29.1892+129.5600/+29.1800+129.5490/+29.1720+129.5400/+29.1600+129.5220/+29.1573+129.5200/+29.1400+129.5114/+29.1200+129.5001/+29.1199+129.5000/+29.1200+129.4999/+29.1400+129.4916/+29.1600+129.4906/+29.1800+129.4939/+29.2000+129.4970/+29.2072+129.5000/+29.2200+129.5062/+29.2400+129.5034/+29.2600+129.5088/+29.2800+129.5158/+29.2860+129.5200/+29.3000+129.5242/+29.3200+129.5299/+29.3400+129.5368/+29.3471+129.5400/+29.3600+129.5446/+29.3800+129.5598/+29.3802+129.5600/+29.4000+129.5709/+29.4104+129.5800/+29.4200+129.5823/+29.4400+129.5865/+29.4565+129.6000/+29.4600+129.6008/+29.4800+129.6040/+29.4994+129.6200/+29.5000+129.6201/+29.5200+129.6222/+29.5400+129.6379/+29.5421+129.6400/+29.5600+129.6409/+29.5800+129.6487/+29.5914+129.6600/+29.6000+129.6602/+29.6200+129.6621/+29.6379+129.6800/+29.6400+129.6801/+29.6599+129.7000/ 南 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6583+129.7000/+29.6588+129.7200/+29.6400+129.7388/+29.6204+129.7200/+29.6200+129.7167/+29.6057+129.7000/+29.6200+129.6876/+29.6400+129.6817/+29.6583+129.7000/ 南西 3 鹿児島県十島村 4630400 2026-09-20T06:00:00+09:00 2026-09-20T09:00:00+09:00 降灰 70 +29.6599+129.7000/+29.6599+129.7200/+29.6400+129.7399/+29.6200+129.7400/+29.6000+129.7399/+29.5800+129.7395/+29.5600+129.7383/+29.5400+129.7352/+29.5200+129.7280/+29.5040+129.7200/+29.5000+129.7198/+29.4800+129.7188/+29.4600+129.7166/+29.4400+129.7125/+29.4200+129.7028/+29.4113+129.7000/+29.4000+129.6990/+29.3800+129.6944/+29.3600+129.6972/+29.3400+129.6892/+29.3213+129.6800/+29.3200+129.6797/+29.3000+129.6755/+29.2800+129.6719/+29.2600+129.6678/+29.2400+129.6612/+29.2354+129.6600/+29.2200+129.6551/+29.2000+129.6454/+29.1894+129.6400/+29.1800+129.6344/+29.1600+129.6260/+29.1448+129.6200/+29.1400+129.6179/+29.1200+129.6095/+29.1022+129.6000/+29.1200+129.5824/+29.1240+129.5800/+29.1400+129.5730/+29.1600+129.5694/+29.1800+129.5685/+29.2000+129.5680/+29.2200+129.5707/+29.2400+129.5716/+29.2600+129.5729/+29.2800+129.5739/+29.3000+129.5772/+29.3041+129.5800/+29.3200+129.5879/+29.3400+129.5917/+29.3600+129.5957/+29.3750+129.6000/+29.3800+129.6010/+29.3993+129.6200/+29.4000+129.6202/+29.4200+129.6225/+29.4400+129.6250/+29.4600+129.6313/+29.4737+129.6400/+29.4800+129.6405/+29.5000+129.6419/+29.5200+129.6443/+29.5400+129.6558/+29.5446+129.6600/+29.5600+129.6604/+29.5800+129.6608/+29.6000+129.6639/+29.6163+129.6800/+29.6200+129.6800/+29.6400+129.6801/+29.6599+129.7000/ 南 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6582+129.7000/+29.6588+129.7200/+29.6400+129.7388/+29.6200+129.7330/+29.6054+129.7200/+29.6055+129.7000/+29.6200+129.6877/+29.6400+129.6818/+29.6582+129.7000/ 南 3 鹿児島県十島村 4630400 2026-09-20T09:00:00+09:00 2026-09-20T12:00:00+09:00 降灰 70 +29.6599+129.7000/+29.6599+129.7200/+29.6400+129.7399/+29.6200+129.7400/+29.6190+129.7400/+29.6000+129.7577/+29.5800+129.7590/+29.5600+129.7591/+29.5400+129.7591/+29.5200+129.7594/+29.5037+129.7600/+29.5000+129.7624/+29.4800+129.7665/+29.4600+129.7710/+29.4400+129.7705/+29.4200+129.7705/+29.4000+129.7727/+29.3800+129.7723/+29.3600+129.7759/+29.3400+129.7728/+29.3200+129.7715/+29.3000+129.7704/+29.2800+129.7712/+29.2600+129.7679/+29.2400+129.7639/+29.2275+129.7600/+29.2200+129.7576/+29.2000+129.7492/+29.1800+129.7415/+29.1767+129.7400/+29.1600+129.7310/+29.1400+129.7208/+29.1385+129.7200/+29.1200+129.7099/+29.1034+129.7000/+29.1200+129.6896/+29.1400+129.6804/+29.1412+129.6800/+29.1600+129.6749/+29.1800+129.6721/+29.2000+129.6675/+29.2200+129.6638/+29.2400+129.6613/+29.2600+129.6603/+29.2652+129.6600/+29.2800+129.6593/+29.2839+129.6600/+29.3000+129.6623/+29.3200+129.6622/+29.3400+129.6621/+29.3600+129.6619/+29.3800+129.6664/+29.4000+129.6702/+29.4200+129.6704/+29.4400+129.6748/+29.4600+129.6750/+29.4800+129.6763/+29.4911+129.6800/+29.5000+129.6803/+29.5200+129.6804/+29.5400+129.6806/+29.5600+129.6805/+29.5800+129.6803/+29.6000+129.6802/+29.6200+129.6801/+29.6400+129.6801/+29.6599+129.7000/ 南 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6569+129.7000/+29.6588+129.7200/+29.6400+129.7388/+29.6200+129.7336/+29.6043+129.7200/+29.6065+129.7000/+29.6200+129.6888/+29.6400+129.6831/+29.6569+129.7000/ 南 3 鹿児島県十島村 4630400 2026-09-20T12:00:00+09:00 2026-09-20T15:00:00+09:00 降灰 70 +29.6597+129.7000/+29.6599+129.7200/+29.6400+129.7400/+29.6397+129.7400/+29.6200+129.7596/+29.6000+129.7599/+29.5933+129.7600/+29.5800+129.7733/+29.5600+129.7792/+29.5400+129.7799/+29.5392+129.7800/+29.5200+129.7974/+29.5000+129.7994/+29.4962+129.8000/+29.4800+129.8144/+29.4600+129.8186/+29.4533+129.8200/+29.4400+129.8319/+29.4200+129.8380/+29.4109+129.8400/+29.4000+129.8500/+29.3800+129.8596/+29.3784+129.8600/+29.3600+129.8759/+29.3512+129.8800/+29.3400+129.8857/+29.3201+129.9000/+29.3200+129.9001/+29.3000+129.9056/+29.2800+129.9096/+29.2600+129.9151/+29.2466+129.9200/+29.2400+129.9251/+29.2200+129.9336/+29.2000+129.9387/+29.1924+129.9400/+29.1800+129.9436/+29.1600+129.9520/+29.1400+129.9570/+29.1200+129.9540/+29.1000+129.9451/+29.0976+129.9400/+29.1000+129.9377/+29.1168+129.9200/+29.1200+129.9122/+29.1233+129.9000/+29.1400+129.8880/+29.1527+129.8800/+29.1600+129.8760/+29.1800+129.8650/+29.1906+129.8600/+29.2000+129.8549/+29.2200+129.8432/+29.2260+129.8400/+29.2400+129.8296/+29.2504+129.8200/+29.2600+129.8145/+29.2800+129.8076/+29.3000+129.8033/+29.3115+129.8000/+29.3200+129.7940/+29.3400+129.7836/+29.3450+129.7800/+29.3600+129.7702/+29.3800+129.7713/+29.4000+129.7641/+29.4185+129.7600/+29.4200+129.7590/+29.4400+129.7452/+29.4600+129.7418/+29.4750+129.7400/+29.4800+129.7362/+29.5000+129.7236/+29.5200+129.7207/+29.5317+129.7200/+29.5400+129.7127/+29.5600+129.7013/+29.5800+129.7002/+29.6000+129.7000/+29.6002+129.7000/+29.6200+129.6803/+29.6400+129.6803/+29.6597+129.7000/ 南 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6588+129.7200/+29.6400+129.7388/+29.6200+129.7336/+29.6043+129.7200/+29.6200+129.7064/+29.6400+129.7012/+29.6588+129.7200/ 南東 2 鹿児島県十島村 4630400 2026-09-20T15:00:00+09:00 2026-09-20T18:00:00+09:00 降灰 70 +29.6597+129.7000/+29.6599+129.7200/+29.6400+129.7399/+29.6389+129.7400/+29.6200+129.7589/+29.6000+129.7598/+29.5800+129.7599/+29.5739+129.7600/+29.5600+129.7737/+29.5400+129.7790/+29.5200+129.7796/+29.5107+129.7800/+29.5000+129.7902/+29.4800+129.7977/+29.4600+129.7994/+29.4529+129.8000/+29.4400+129.8101/+29.4200+129.8169/+29.4000+129.8195/+29.3986+129.8200/+29.3800+129.8393/+29.3767+129.8400/+29.3600+129.8483/+29.3400+129.8533/+29.3200+129.8563/+29.3130+129.8600/+29.3000+129.8712/+29.2800+129.8740/+29.2600+129.8786/+29.2552+129.8800/+29.2400+129.8908/+29.2200+129.8954/+29.2028+129.9000/+29.2000+129.9018/+29.1800+129.9124/+29.1600+129.9200/+29.1598+129.9200/+29.1400+129.9239/+29.1200+129.9261/+29.1000+129.9292/+29.0800+129.9290/+29.0600+129.9286/+29.0470+129.9200/+29.0400+129.9048/+29.0391+129.9000/+29.0400+129.8993/+29.0600+129.8879/+29.0766+129.8800/+29.0800+129.8784/+29.1000+129.8691/+29.1117+129.8600/+29.1200+129.8524/+29.1335+129.8400/+29.1400+129.8363/+29.1600+129.8258/+29.1726+129.8200/+29.1800+129.8172/+29.2000+129.8126/+29.2200+129.8048/+29.2363+129.8000/+29.2400+129.7973/+29.2600+129.7817/+29.2640+129.7800/+29.2800+129.7752/+29.3000+129.7726/+29.3200+129.7658/+29.3400+129.7615/+29.3436+129.7600/+29.3600+129.7500/+29.3748+129.7600/+29.3800+129.7607/+29.3846+129.7600/+29.4000+129.7493/+29.4200+129.7432/+29.4400+129.7410/+29.4515+129.7400/+29.4600+129.7328/+29.4800+129.7227/+29.5000+129.7208/+29.5200+129.7202/+29.5217+129.7200/+29.5400+129.7027/+29.5600+129.7004/+29.5800+129.7001/+29.5935+129.7000/+29.6000+129.6935/+29.6200+129.6802/+29.6400+129.6803/+29.6597+129.7000/ 南 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6588+129.7200/+29.6400+129.7388/+29.6200+129.7348/+29.6022+129.7200/+29.6200+129.7052/+29.6400+129.7012/+29.6588+129.7200/ 南東 2 鹿児島県十島村 4630400 2026-09-20T18:00:00+09:00 2026-09-20T21:00:00+09:00 降灰 70 +29.6596+129.7000/+29.6599+129.7200/+29.6400+129.7399/+29.6397+129.7400/+29.6200+129.7596/+29.6000+129.7599/+29.5917+129.7600/+29.5800+129.7717/+29.5600+129.7794/+29.5400+129.7798/+29.5373+129.7800/+29.5200+129.7965/+29.5000+129.7992/+29.4893+129.8000/+29.4800+129.8089/+29.4600+129.8177/+29.4400+129.8197/+29.4379+129.8200/+29.4200+129.8336/+29.4000+129.8384/+29.3972+129.8400/+29.3800+129.8569/+29.3606+129.8600/+29.3600+129.8606/+29.3400+129.8760/+29.3304+129.8800/+29.3200+129.8872/+29.3000+129.8961/+29.2915+129.9000/+29.2800+129.9037/+29.2600+129.9086/+29.2400+129.9122/+29.2261+129.9200/+29.2200+129.9270/+29.2000+129.9313/+29.1800+129.9345/+29.1600+129.9386/+29.1523+129.9400/+29.1400+129.9436/+29.1200+129.9493/+29.1000+129.9587/+29.0956+129.9600/+29.0800+129.9628/+29.0600+129.9665/+29.0400+129.9674/+29.0200+129.9644/+29.0046+129.9600/+29.0162+129.9400/+29.0200+129.9386/+29.0400+129.9310/+29.0600+129.9222/+29.0631+129.9200/+29.0761+129.9000/+29.0800+129.8967/+29.1000+129.8845/+29.1080+129.8800/+29.1200+129.8742/+29.1400+129.8665/+29.1561+129.8600/+29.1600+129.8577/+29.1800+129.8429/+29.1839+129.8400/+29.2000+129.8312/+29.2200+129.8250/+29.2293+129.8200/+29.2400+129.8162/+29.2600+129.8087/+29.2800+129.8049/+29.3000+129.8017/+29.3058+129.8000/+29.3200+129.7870/+29.3349+129.7800/+29.3400+129.7775/+29.3600+129.7676/+29.3800+129.7759/+29.4000+129.7642/+29.4200+129.7612/+29.4278+129.7600/+29.4400+129.7496/+29.4600+129.7422/+29.4800+129.7404/+29.4829+129.7400/+29.5000+129.7251/+29.5200+129.7208/+29.5400+129.7201/+29.5411+129.7200/+29.5600+129.7017/+29.5800+129.7002/+29.6000+129.7000/+29.6004+129.7000/+29.6200+129.6804/+29.6400+129.6804/+29.6596+129.7000/ 南 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6588+129.7200/+29.6400+129.7388/+29.6200+129.7359/+29.6009+129.7200/+29.6200+129.7041/+29.6400+129.7012/+29.6588+129.7200/ 南東 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、２０日０９時から１２時までは火口から南方向に降灰が予想されます。 　２０日３時から２０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 　２０日０３時から０６時まで　南　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　２０日０６時から０９時まで　南　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　２０日０９時から１２時まで　南　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　２０日１２時から１５時まで　南　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　２０日１５時から１８時まで　南　　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　２０日１８時から２１時まで　南　　　　　　　７０ｋｍ　　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。