2026-08-04T02:00:00Z 通常 気象庁本庁 気象庁 2026-08-04T11:00:00+09:00 2026-08-04T12:00:00+09:00 2026-08-05T06:00:00+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 2026-08-04T12:00:00+09:00 2026-08-04T15:00:00+09:00 降灰 70 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西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8122+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3180/+30.7620+130.3000/+30.7653+130.2800/+30.7800+130.2614/+30.8000+130.2678/+30.8122+130.2800/ 西 3 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 +30.8193+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+130.2798/+30.7406+130.2600/+30.7402+130.2400/+30.7401+130.2200/+30.7400+130.2188/+30.7222+130.2000/+30.7206+130.1800/+30.7201+130.1600/+30.7200+130.1586/+30.7037+130.1400/+30.7012+130.1200/+30.7000+130.1017/+30.6984+130.1000/+30.6838+130.0800/+30.6815+130.0600/+30.6800+130.0434/+30.6772+130.0400/+30.6616+130.0200/+30.6600+130.0098/+30.6507+130.0000/+30.6407+129.9800/+30.6400+129.9781/+30.6316+129.9600/+30.6262+129.9400/+30.6200+129.9298/+30.6127+129.9200/+30.6102+129.9000/+30.6080+129.8800/+30.6039+129.8600/+30.6000+129.8469/+30.5924+129.8400/+30.5800+129.8207/+30.5797+129.8200/+30.5735+129.8000/+30.5720+129.7800/+30.5703+129.7600/+30.5686+129.7400/+30.5660+129.7200/+30.5600+129.7038/+30.5582+129.7000/+30.5537+129.6800/+30.5443+129.6600/+30.5400+129.6449/+30.5395+129.6400/+30.5400+129.6347/+30.5600+129.6213/+30.5661+129.6400/+30.5725+129.6600/+30.5800+129.6702/+30.6000+129.6760/+30.6027+129.6800/+30.6134+129.7000/+30.6200+129.7150/+30.6220+129.7200/+30.6297+129.7400/+30.6384+129.7600/+30.6400+129.7626/+30.6534+129.7800/+30.6600+129.7887/+30.6634+129.8000/+30.6692+129.8200/+30.6742+129.8400/+30.6800+129.8501/+30.6911+129.8600/+30.7000+129.8757/+30.7016+129.8800/+30.7087+129.9000/+30.7101+129.9200/+30.7159+129.9400/+30.7194+129.9600/+30.7200+129.9635/+30.7310+129.9800/+30.7348+130.0000/+30.7373+130.0200/+30.7395+130.0400/+30.7400+130.0427/+30.7521+130.0600/+30.7578+130.0800/+30.7596+130.1000/+30.7600+130.1030/+30.7744+130.1200/+30.7785+130.1400/+30.7795+130.1600/+30.7800+130.1707/+30.7889+130.1800/+30.7990+130.2000/+30.7998+130.2200/+30.7999+130.2400/+30.8000+130.2405/+30.8193+130.2600/ 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+130.3181/+30.7619+130.3000/+30.7661+130.2800/+30.7800+130.2622/+30.7939+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 +30.8182+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+130.2712/+30.7488+130.2600/+30.7407+130.2400/+30.7403+130.2200/+30.7402+130.2000/+30.7400+130.1866/+30.7341+130.1800/+30.7230+130.1600/+30.7213+130.1400/+30.7206+130.1200/+30.7200+130.1112/+30.7112+130.1000/+30.7041+130.0800/+30.7019+130.0600/+30.7000+130.0426/+30.6979+130.0400/+30.6829+130.0200/+30.6800+130.0132/+30.6741+130.0000/+30.6689+129.9800/+30.6660+129.9600/+30.6639+129.9400/+30.6616+129.9200/+30.6600+129.9160/+30.6482+129.9000/+30.6462+129.8800/+30.6427+129.8600/+30.6400+129.8488/+30.6349+129.8400/+30.6240+129.8200/+30.6206+129.8000/+30.6200+129.7870/+30.6196+129.7800/+30.6182+129.7600/+30.6178+129.7400/+30.6199+129.7200/+30.6200+129.7192/+30.6257+129.7000/+30.6400+129.6884/+30.6577+129.7000/+30.6600+129.7012/+30.6695+129.7200/+30.6777+129.7400/+30.6800+129.7463/+30.6851+129.7600/+30.6943+129.7800/+30.7000+129.7877/+30.7042+129.8000/+30.7104+129.8200/+30.7150+129.8400/+30.7200+129.8542/+30.7247+129.8600/+30.7351+129.8800/+30.7371+129.9000/+30.7400+129.9093/+30.7441+129.9200/+30.7508+129.9400/+30.7556+129.9600/+30.7594+129.9800/+30.7566+130.0000/+30.7588+130.0200/+30.7600+130.0313/+30.7654+130.0400/+30.7737+130.0600/+30.7776+130.0800/+30.7789+130.1000/+30.7796+130.1200/+30.7800+130.1249/+30.7927+130.1400/+30.7980+130.1600/+30.7994+130.1800/+30.7997+130.2000/+30.7999+130.2200/+30.8000+130.2214/+30.8182+130.2400/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8131+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3178/+30.7622+130.3000/+30.7668+130.2800/+30.7800+130.2636/+30.8000+130.2669/+30.8131+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 +30.8178+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+130.2757/+30.7444+130.2600/+30.7405+130.2400/+30.7403+130.2200/+30.7402+130.2000/+30.7400+130.1939/+30.7272+130.1800/+30.7220+130.1600/+30.7209+130.1400/+30.7203+130.1200/+30.7200+130.1151/+30.7084+130.1000/+30.7034+130.0800/+30.7015+130.0600/+30.7000+130.0407/+30.6995+130.0400/+30.6829+130.0200/+30.6800+130.0126/+30.6745+130.0000/+30.6693+129.9800/+30.6663+129.9600/+30.6644+129.9400/+30.6623+129.9200/+30.6600+129.9143/+30.6493+129.9000/+30.6479+129.8800/+30.6452+129.8600/+30.6416+129.8400/+30.6400+129.8313/+30.6327+129.8200/+30.6244+129.8000/+30.6231+129.7800/+30.6216+129.7600/+30.6207+129.7400/+30.6205+129.7200/+30.6202+129.7000/+30.6245+129.6800/+30.6323+129.6600/+30.6400+129.6488/+30.6600+129.6598/+30.6601+129.6600/+30.6680+129.6800/+30.6744+129.7000/+30.6800+129.7150/+30.6820+129.7200/+30.6902+129.7400/+30.7000+129.7567/+30.7020+129.7600/+30.7132+129.7800/+30.7115+129.8000/+30.7179+129.8200/+30.7200+129.8269/+30.7274+129.8400/+30.7372+129.8600/+30.7400+129.8690/+30.7426+129.8800/+30.7419+129.9000/+30.7477+129.9200/+30.7534+129.9400/+30.7573+129.9600/+30.7600+129.9757/+30.7617+129.9800/+30.7600+129.9820/+30.7570+130.0000/+30.7591+130.0200/+30.7600+130.0307/+30.7652+130.0400/+30.7738+130.0600/+30.7769+130.0800/+30.7787+130.1000/+30.7795+130.1200/+30.7800+130.1278/+30.7899+130.1400/+30.7976+130.1600/+30.7993+130.1800/+30.7997+130.2000/+30.7999+130.2200/+30.8000+130.2216/+30.8178+130.2400/ 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+130.3181/+30.7619+130.3000/+30.7653+130.2800/+30.7800+130.2619/+30.8000+130.2661/+30.8139+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 +30.8192+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2943/+30.7457+130.2800/+30.7403+130.2600/+30.7401+130.2400/+30.7400+130.2362/+30.7243+130.2200/+30.7210+130.2000/+30.7202+130.1800/+30.7200+130.1773/+30.7050+130.1600/+30.7017+130.1400/+30.7002+130.1200/+30.7000+130.1187/+30.6858+130.1000/+30.6821+130.0800/+30.6800+130.0661/+30.6751+130.0600/+30.6662+130.0400/+30.6600+130.0205/+30.6593+130.0200/+30.6443+130.0000/+30.6400+129.9890/+30.6358+129.9800/+30.6308+129.9600/+30.6261+129.9400/+30.6200+129.9284/+30.6145+129.9200/+30.6106+129.9000/+30.6071+129.8800/+30.6037+129.8600/+30.6000+129.8447/+30.5964+129.8400/+30.5846+129.8200/+30.5800+129.8057/+30.5784+129.8000/+30.5765+129.7800/+30.5743+129.7600/+30.5731+129.7400/+30.5735+129.7200/+30.5741+129.7000/+30.5800+129.6850/+30.5835+129.6800/+30.6000+129.6689/+30.6063+129.6800/+30.6159+129.7000/+30.6200+129.7098/+30.6246+129.7200/+30.6346+129.7400/+30.6400+129.7474/+30.6493+129.7600/+30.6600+129.7715/+30.6648+129.7800/+30.6684+129.8000/+30.6752+129.8200/+30.6800+129.8319/+30.6852+129.8400/+30.6987+129.8600/+30.7000+129.8631/+30.7052+129.8800/+30.7105+129.9000/+30.7141+129.9200/+30.7186+129.9400/+30.7200+129.9463/+30.7297+129.9600/+30.7375+129.9800/+30.7357+130.0000/+30.7381+130.0200/+30.7400+130.0330/+30.7452+130.0400/+30.7550+130.0600/+30.7583+130.0800/+30.7598+130.1000/+30.7600+130.1012/+30.7746+130.1200/+30.7785+130.1400/+30.7795+130.1600/+30.7800+130.1682/+30.7912+130.1800/+30.7988+130.2000/+30.7997+130.2200/+30.7999+130.2400/+30.8000+130.2407/+30.8192+130.2600/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8125+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3179/+30.7621+130.3000/+30.7652+130.2800/+30.7800+130.2621/+30.8000+130.2675/+30.8125+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 +30.8166+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2994/+30.7406+130.2800/+30.7401+130.2600/+30.7400+130.2584/+30.7221+130.2400/+30.7203+130.2200/+30.7200+130.2172/+30.7039+130.2000/+30.7008+130.1800/+30.7000+130.1748/+30.6870+130.1600/+30.6813+130.1400/+30.6800+130.1335/+30.6696+130.1200/+30.6625+130.1000/+30.6600+130.0887/+30.6537+130.0800/+30.6464+130.0600/+30.6400+130.0508/+30.6292+130.0400/+30.6237+130.0200/+30.6200+130.0055/+30.6172+130.0000/+30.6091+129.9800/+30.6039+129.9600/+30.6000+129.9457/+30.5947+129.9400/+30.5854+129.9200/+30.5807+129.9000/+30.5800+129.8969/+30.5766+129.8800/+30.5713+129.8600/+30.5645+129.8400/+30.5619+129.8200/+30.5600+129.8081/+30.5581+129.8000/+30.5538+129.7800/+30.5480+129.7600/+30.5427+129.7400/+30.5400+129.7267/+30.5392+129.7200/+30.5366+129.7000/+30.5384+129.6800/+30.5400+129.6678/+30.5600+129.6613/+30.5703+129.6800/+30.5800+129.6917/+30.5894+129.7000/+30.6000+129.7060/+30.6079+129.7200/+30.6165+129.7400/+30.6200+129.7493/+30.6237+129.7600/+30.6310+129.7800/+30.6378+129.8000/+30.6400+129.8028/+30.6521+129.8200/+30.6599+129.8400/+30.6600+129.8402/+30.6666+129.8600/+30.6709+129.8800/+30.6782+129.9000/+30.6800+129.9047/+30.6872+129.9200/+30.6968+129.9400/+30.7000+129.9487/+30.7054+129.9600/+30.7111+129.9800/+30.7162+130.0000/+30.7168+130.0200/+30.7200+130.0367/+30.7224+130.0400/+30.7343+130.0600/+30.7384+130.0800/+30.7400+130.0890/+30.7492+130.1000/+30.7573+130.1200/+30.7594+130.1400/+30.7600+130.1440/+30.7743+130.1600/+30.7789+130.1800/+30.7799+130.2000/+30.7800+130.2006/+30.7985+130.2200/+30.7998+130.2400/+30.8000+130.2434/+30.8166+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+130.3176/+30.7624+130.3000/+30.7651+130.2800/+30.7800+130.2614/+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１２時から５日６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１２時から１５時まで　西　　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０４日１５時から１８時まで　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　　　　　 　 　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。