2026-08-04T05:00:00Z 通常 気象庁本庁 気象庁 2026-08-04T14:00:00+09:00 2026-08-04T15:00:00+09:00 2026-08-05T09:00:00+09:00 508 発表 1 降灰予報 1.1_0 　現在、薩摩硫黄島は噴火警戒レベル２（火口周辺規制）です。薩摩硫黄島で噴火が発生した場合には、４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 薩摩硫黄島 508 降灰 70 鹿児島県三島村 4630300 小さな噴石の落下 75 鹿児島県三島村 4630300 降灰予報（定時） 06 薩摩硫黄島 508 +3047.58+13018.32+704/ 降灰 70 鹿児島県三島村 4630300 小さな噴石の落下 75 鹿児島県三島村 4630300 2026-08-04T15:00:00+09:00 2026-08-04T18:00:00+09:00 降灰 70 +30.8186+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3199/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2928/+30.7472+130.2800/+30.7403+130.2600/+30.7401+130.2400/+30.7400+130.2319/+30.7282+130.2200/+30.7209+130.2000/+30.7203+130.1800/+30.7200+130.1753/+30.7056+130.1600/+30.7013+130.1400/+30.7001+130.1200/+30.7000+130.1196/+30.6840+130.1000/+30.6813+130.0800/+30.6800+130.0675/+30.6736+130.0600/+30.6636+130.0400/+30.6600+130.0293/+30.6466+130.0200/+30.6400+130.0057/+30.6372+130.0000/+30.6303+129.9800/+30.6258+129.9600/+30.6207+129.9400/+30.6200+129.9387/+30.6085+129.9200/+30.6052+129.9000/+30.6017+129.8800/+30.6000+129.8754/+30.5869+129.8600/+30.5800+129.8488/+30.5748+129.8400/+30.5715+129.8200/+30.5685+129.8000/+30.5676+129.7800/+30.5662+129.7600/+30.5628+129.7400/+30.5600+129.7326/+30.5539+129.7200/+30.5400+129.7010/+30.5396+129.7000/+30.5378+129.6800/+30.5357+129.6600/+30.5373+129.6400/+30.5400+129.6328/+30.5600+129.6378/+30.5610+129.6400/+30.5676+129.6600/+30.5765+129.6800/+30.5800+129.6842/+30.6000+129.6964/+30.6024+129.7000/+30.6133+129.7200/+30.6200+129.7364/+30.6212+129.7400/+30.6291+129.7600/+30.6392+129.7800/+30.6400+129.7814/+30.6518+129.8000/+30.6600+129.8090/+30.6643+129.8200/+30.6700+129.8400/+30.6763+129.8600/+30.6800+129.8728/+30.6853+129.8800/+30.7000+129.8967/+30.7015+129.9000/+30.7000+129.9091/+30.6990+129.9200/+30.7000+129.9217/+30.7106+129.9400/+30.7154+129.9600/+30.7180+129.9800/+30.7200+129.9875/+30.7287+130.0000/+30.7304+130.0200/+30.7370+130.0400/+30.7393+130.0600/+30.7400+130.0644/+30.7521+130.0800/+30.7582+130.1000/+30.7597+130.1200/+30.7600+130.1218/+30.7759+130.1400/+30.7791+130.1600/+30.7798+130.1800/+30.7800+130.1821/+30.7973+130.2000/+30.7997+130.2200/+30.7999+130.2400/+30.8000+130.2414/+30.8186+130.2600/ 南西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3187/+30.7613+130.3000/+30.7658+130.2800/+30.7800+130.2621/+30.7942+130.2800/+30.8000+130.2812/+30.8188+130.3000/ 南西 3 鹿児島県三島村 4630300 2026-08-04T18:00:00+09:00 2026-08-04T21:00:00+09:00 降灰 70 +30.8107+130.2400/+30.8197+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2789/+30.7412+130.2600/+30.7403+130.2400/+30.7402+130.2200/+30.7400+130.2122/+30.7282+130.2000/+30.7215+130.1800/+30.7207+130.1600/+30.7200+130.1466/+30.7139+130.1400/+30.7032+130.1200/+30.7011+130.1000/+30.7000+130.0851/+30.6962+130.0800/+30.6854+130.0600/+30.6817+130.0400/+30.6800+130.0366/+30.6646+130.0200/+30.6620+130.0000/+30.6600+129.9876/+30.6538+129.9800/+30.6435+129.9600/+30.6400+129.9456/+30.6381+129.9400/+30.6314+129.9200/+30.6216+129.9000/+30.6200+129.8954/+30.6159+129.8800/+30.6113+129.8600/+30.6069+129.8400/+30.6006+129.8200/+30.6000+129.8188/+30.5903+129.8000/+30.5862+129.7800/+30.5826+129.7600/+30.5808+129.7400/+30.5808+129.7200/+30.5807+129.7000/+30.5862+129.6800/+30.6000+129.6630/+30.6076+129.6800/+30.6153+129.7000/+30.6200+129.7136/+30.6226+129.7200/+30.6329+129.7400/+30.6400+129.7483/+30.6502+129.7600/+30.6600+129.7686/+30.6668+129.7800/+30.6705+129.8000/+30.6789+129.8200/+30.6800+129.8221/+30.6910+129.8400/+30.7000+129.8558/+30.7017+129.8600/+30.7075+129.8800/+30.7133+129.9000/+30.7184+129.9200/+30.7200+129.9261/+30.7302+129.9400/+30.7392+129.9600/+30.7400+129.9624/+30.7472+129.9800/+30.7400+129.9916/+30.7388+130.0000/+30.7400+130.0070/+30.7483+130.0200/+30.7558+130.0400/+30.7585+130.0600/+30.7600+130.0764/+30.7626+130.0800/+30.7752+130.1000/+30.7785+130.1200/+30.7794+130.1400/+30.7800+130.1503/+30.7885+130.1600/+30.7980+130.1800/+30.7995+130.2000/+30.7998+130.2200/+30.8000+130.2293/+30.8107+130.2400/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8116+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3179/+30.7621+130.3000/+30.7670+130.2800/+30.7800+130.2637/+30.8000+130.2684/+30.8116+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-04T21:00:00+09:00 2026-08-05T00:00:00+09:00 降灰 70 +30.8177+130.2400/+30.8198+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2737/+30.7463+130.2600/+30.7406+130.2400/+30.7403+130.2200/+30.7402+130.2000/+30.7400+130.1879/+30.7326+130.1800/+30.7226+130.1600/+30.7212+130.1400/+30.7207+130.1200/+30.7200+130.1075/+30.7136+130.1000/+30.7047+130.0800/+30.7022+130.0600/+30.7010+130.0400/+30.7000+130.0320/+30.6868+130.0200/+30.6800+130.0019/+30.6791+130.0000/+30.6725+129.9800/+30.6682+129.9600/+30.6660+129.9400/+30.6644+129.9200/+30.6600+129.9105/+30.6507+129.9000/+30.6489+129.8800/+30.6468+129.8600/+30.6445+129.8400/+30.6411+129.8200/+30.6400+129.8178/+30.6253+129.8000/+30.6237+129.7800/+30.6221+129.7600/+30.6207+129.7400/+30.6200+129.7267/+30.6196+129.7200/+30.6178+129.7000/+30.6200+129.6811/+30.6202+129.6800/+30.6253+129.6600/+30.6400+129.6435/+30.6600+129.6560/+30.6619+129.6600/+30.6700+129.6800/+30.6764+129.7000/+30.6800+129.7113/+30.6829+129.7200/+30.6904+129.7400/+30.7000+129.7552/+30.7033+129.7600/+30.7159+129.7800/+30.7128+129.8000/+30.7184+129.8200/+30.7200+129.8257/+30.7281+129.8400/+30.7385+129.8600/+30.7400+129.8647/+30.7438+129.8800/+30.7439+129.9000/+30.7493+129.9200/+30.7534+129.9400/+30.7571+129.9600/+30.7600+129.9766/+30.7614+129.9800/+30.7600+129.9817/+30.7569+130.0000/+30.7591+130.0200/+30.7600+130.0315/+30.7651+130.0400/+30.7741+130.0600/+30.7773+130.0800/+30.7788+130.1000/+30.7796+130.1200/+30.7800+130.1282/+30.7899+130.1400/+30.7977+130.1600/+30.7993+130.1800/+30.7997+130.2000/+30.7999+130.2200/+30.8000+130.2220/+30.8177+130.2400/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8126+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3178/+30.7622+130.3000/+30.7647+130.2800/+30.7800+130.2618/+30.8000+130.2674/+30.8126+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-05T00:00:00+09:00 2026-08-05T03:00:00+09:00 降灰 70 +30.8186+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8035+130.3200/+30.8000+130.3235/+30.7893+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2959/+30.7441+130.2800/+30.7403+130.2600/+30.7401+130.2400/+30.7400+130.2372/+30.7232+130.2200/+30.7206+130.2000/+30.7201+130.1800/+30.7200+130.1790/+30.7031+130.1600/+30.7009+130.1400/+30.7000+130.1284/+30.6927+130.1200/+30.6832+130.1000/+30.6806+130.0800/+30.6800+130.0765/+30.6673+130.0600/+30.6625+130.0400/+30.6600+130.0317/+30.6447+130.0200/+30.6400+130.0086/+30.6359+130.0000/+30.6294+129.9800/+30.6241+129.9600/+30.6200+129.9421/+30.6189+129.9400/+30.6091+129.9200/+30.6052+129.9000/+30.6008+129.8800/+30.6000+129.8775/+30.5879+129.8600/+30.5800+129.8449/+30.5774+129.8400/+30.5748+129.8200/+30.5723+129.8000/+30.5704+129.7800/+30.5676+129.7600/+30.5649+129.7400/+30.5619+129.7200/+30.5600+129.7148/+30.5553+129.7000/+30.5600+129.6861/+30.5800+129.6891/+30.6000+129.6900/+30.6055+129.7000/+30.6155+129.7200/+30.6200+129.7305/+30.6237+129.7400/+30.6315+129.7600/+30.6400+129.7771/+30.6419+129.7800/+30.6540+129.8000/+30.6600+129.8071/+30.6645+129.8200/+30.6703+129.8400/+30.6775+129.8600/+30.6800+129.8672/+30.6885+129.8800/+30.7000+129.8961/+30.7016+129.9000/+30.7010+129.9200/+30.7112+129.9400/+30.7157+129.9600/+30.7186+129.9800/+30.7200+129.9851/+30.7293+130.0000/+30.7320+130.0200/+30.7373+130.0400/+30.7396+130.0600/+30.7400+130.0622/+30.7529+130.0800/+30.7579+130.1000/+30.7596+130.1200/+30.7600+130.1229/+30.7742+130.1400/+30.7788+130.1600/+30.7798+130.1800/+30.7800+130.1823/+30.7965+130.2000/+30.7996+130.2200/+30.7999+130.2400/+30.8000+130.2414/+30.8186+130.2600/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8139+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3176/+30.7624+130.3000/+30.7651+130.2800/+30.7800+130.2624/+30.8000+130.2661/+30.8139+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-05T03:00:00+09:00 2026-08-05T06:00:00+09:00 降灰 70 +30.8160+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2991/+30.7409+130.2800/+30.7401+130.2600/+30.7400+130.2550/+30.7251+130.2400/+30.7206+130.2200/+30.7200+130.2062/+30.7140+130.2000/+30.7020+130.1800/+30.7002+130.1600/+30.7000+130.1589/+30.6843+130.1400/+30.6811+130.1200/+30.6800+130.1141/+30.6682+130.1000/+30.6621+130.0800/+30.6600+130.0677/+30.6542+130.0600/+30.6400+130.0459/+30.6339+130.0400/+30.6271+130.0200/+30.6226+130.0000/+30.6200+129.9879/+30.6164+129.9800/+30.6097+129.9600/+30.6036+129.9400/+30.6000+129.9230/+30.5979+129.9200/+30.5865+129.9000/+30.5801+129.8800/+30.5800+129.8798/+30.5757+129.8600/+30.5684+129.8400/+30.5660+129.8200/+30.5632+129.8000/+30.5602+129.7800/+30.5600+129.7790/+30.5536+129.7600/+30.5463+129.7400/+30.5400+129.7232/+30.5392+129.7200/+30.5348+129.7000/+30.5371+129.6800/+30.5400+129.6616/+30.5425+129.6600/+30.5600+129.6543/+30.5628+129.6600/+30.5752+129.6800/+30.5800+129.6858/+30.5955+129.7000/+30.6000+129.7027/+30.6099+129.7200/+30.6185+129.7400/+30.6200+129.7435/+30.6266+129.7600/+30.6347+129.7800/+30.6400+129.7947/+30.6424+129.8000/+30.6558+129.8200/+30.6600+129.8308/+30.6627+129.8400/+30.6689+129.8600/+30.6730+129.8800/+30.6798+129.9000/+30.6800+129.9005/+30.6884+129.9200/+30.6973+129.9400/+30.7000+129.9471/+30.7064+129.9600/+30.7119+129.9800/+30.7161+130.0000/+30.7165+130.0200/+30.7196+130.0400/+30.7200+130.0416/+30.7340+130.0600/+30.7382+130.0800/+30.7400+130.0942/+30.7452+130.1000/+30.7570+130.1200/+30.7593+130.1400/+30.7600+130.1452/+30.7737+130.1600/+30.7791+130.1800/+30.7798+130.2000/+30.7800+130.2009/+30.7986+130.2200/+30.7998+130.2400/+30.8000+130.2439/+30.8160+130.2600/ 南西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8148+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3176/+30.7624+130.3000/+30.7647+130.2800/+30.7800+130.2611/+30.8000+130.2652/+30.8148+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-05T06:00:00+09:00 2026-08-05T09:00:00+09:00 降灰 70 +30.8174+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3199/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2994/+30.7406+130.2800/+30.7401+130.2600/+30.7400+130.2584/+30.7219+130.2400/+30.7203+130.2200/+30.7200+130.2174/+30.7036+130.2000/+30.7007+130.1800/+30.7000+130.1752/+30.6863+130.1600/+30.6809+130.1400/+30.6800+130.1364/+30.6669+130.1200/+30.6627+130.1000/+30.6600+130.0905/+30.6516+130.0800/+30.6439+130.0600/+30.6400+130.0534/+30.6272+130.0400/+30.6222+130.0200/+30.6200+130.0101/+30.6159+130.0000/+30.6095+129.9800/+30.6048+129.9600/+30.6000+129.9429/+30.5973+129.9400/+30.5873+129.9200/+30.5831+129.9000/+30.5800+129.8830/+30.5795+129.8800/+30.5756+129.8600/+30.5690+129.8400/+30.5666+129.8200/+30.5641+129.8000/+30.5623+129.7800/+30.5600+129.7610/+30.5598+129.7600/+30.5565+129.7400/+30.5527+129.7200/+30.5472+129.7000/+30.5487+129.6800/+30.5515+129.6600/+30.5600+129.6455/+30.5700+129.6600/+30.5800+129.6678/+30.6000+129.6742/+30.6031+129.6800/+30.6119+129.7000/+30.6194+129.7200/+30.6200+129.7218/+30.6257+129.7400/+30.6320+129.7600/+30.6400+129.7794/+30.6403+129.7800/+30.6509+129.8000/+30.6600+129.8177/+30.6605+129.8200/+30.6651+129.8400/+30.6716+129.8600/+30.6766+129.8800/+30.6800+129.8871/+30.6922+129.9000/+30.6939+129.9200/+30.7000+129.9390/+30.7005+129.9400/+30.7093+129.9600/+30.7138+129.9800/+30.7177+130.0000/+30.7184+130.0200/+30.7200+130.0278/+30.7287+130.0400/+30.7361+130.0600/+30.7391+130.0800/+30.7400+130.0853/+30.7517+130.1000/+30.7579+130.1200/+30.7595+130.1400/+30.7600+130.1428/+30.7755+130.1600/+30.7790+130.1800/+30.7799+130.2000/+30.7800+130.2004/+30.7987+130.2200/+30.7998+130.2400/+30.8000+130.2425/+30.8174+130.2600/ 南西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8154+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3179/+30.7621+130.3000/+30.7651+130.2800/+30.7800+130.2607/+30.8000+130.2646/+30.8154+130.2800/ 西 3 鹿児島県三島村 4630300 　現在、薩摩硫黄島は噴火警戒レベル２（火口周辺規制）です。薩摩硫黄島で噴火が発生した場合には、４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。 　４日１５時から５日９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 　０４日１５時から１８時まで　南西　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０４日１８時から２１時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０４日２１時から２４時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０５日００時から０３時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０５日０３時から０６時まで　南西　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０５日０６時から０９時まで　南西　　　　　　７０ｋｍ　　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：三島村 　 　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。