2026-08-03T23:00:00Z 通常 気象庁本庁 気象庁 2026-08-04T08:00:00+09:00 2026-08-04T09:00:00+09:00 2026-08-05T03:00:00+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０９時から１２時までは火口から西方向、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 2026-08-04T09:00:00+09:00 2026-08-04T12:00:00+09:00 降灰 70 +30.8171+130.2400/+30.8197+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3199/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2792/+30.7411+130.2600/+30.7403+130.2400/+30.7402+130.2200/+30.7400+130.2144/+30.7264+130.2000/+30.7218+130.1800/+30.7208+130.1600/+30.7200+130.1459/+30.7149+130.1400/+30.7051+130.1200/+30.7021+130.1000/+30.7003+130.0800/+30.7000+130.0769/+30.6905+130.0600/+30.6854+130.0400/+30.6800+130.0299/+30.6705+130.0200/+30.6667+130.0000/+30.6642+129.9800/+30.6624+129.9600/+30.6602+129.9400/+30.6600+129.9383/+30.6513+129.9200/+30.6439+129.9000/+30.6419+129.8800/+30.6400+129.8670/+30.6362+129.8600/+30.6283+129.8400/+30.6200+129.8235/+30.6187+129.8200/+30.6170+129.8000/+30.6165+129.7800/+30.6160+129.7600/+30.6157+129.7400/+30.6155+129.7200/+30.6153+129.7000/+30.6173+129.6800/+30.6200+129.6650/+30.6214+129.6600/+30.6280+129.6400/+30.6389+129.6200/+30.6400+129.6189/+30.6407+129.6200/+30.6539+129.6400/+30.6600+129.6449/+30.6653+129.6600/+30.6729+129.6800/+30.6788+129.7000/+30.6800+129.7047/+30.6838+129.7200/+30.6885+129.7400/+30.6949+129.7600/+30.7000+129.7709/+30.7053+129.7800/+30.7077+129.8000/+30.7119+129.8200/+30.7151+129.8400/+30.7200+129.8557/+30.7241+129.8600/+30.7357+129.8800/+30.7345+129.9000/+30.7387+129.9200/+30.7400+129.9235/+30.7472+129.9400/+30.7526+129.9600/+30.7563+129.9800/+30.7537+130.0000/+30.7571+130.0200/+30.7587+130.0400/+30.7600+130.0499/+30.7680+130.0600/+30.7756+130.0800/+30.7783+130.1000/+30.7794+130.1200/+30.7800+130.1306/+30.7877+130.1400/+30.7969+130.1600/+30.7991+130.1800/+30.7997+130.2000/+30.7999+130.2200/+30.8000+130.2223/+30.8171+130.2400/ 西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8150+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3173/+30.7627+130.3000/+30.7655+130.2800/+30.7800+130.2613/+30.8000+130.2650/+30.8150+130.2800/ 西 3 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 +30.8158+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3179/+30.7621+130.3000/+30.7658+130.2800/+30.7800+130.2619/+30.8000+130.2641/+30.8158+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 +30.8192+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2839/+30.7561+130.2800/+30.7405+130.2600/+30.7402+130.2400/+30.7400+130.2200/+30.7400+130.2199/+30.7216+130.2000/+30.7205+130.1800/+30.7200+130.1658/+30.7143+130.1600/+30.7025+130.1400/+30.7008+130.1200/+30.7000+130.1114/+30.6898+130.1000/+30.6827+130.0800/+30.6807+130.0600/+30.6800+130.0558/+30.6674+130.0400/+30.6600+130.0200/+30.6600+130.0199/+30.6443+130.0000/+30.6400+129.9883/+30.6364+129.9800/+30.6304+129.9600/+30.6249+129.9400/+30.6200+129.9319/+30.6118+129.9200/+30.6087+129.9000/+30.6057+129.8800/+30.6002+129.8600/+30.6000+129.8595/+30.5840+129.8400/+30.5800+129.8261/+30.5786+129.8200/+30.5744+129.8000/+30.5715+129.7800/+30.5678+129.7600/+30.5643+129.7400/+30.5600+129.7237/+30.5586+129.7200/+30.5480+129.7000/+30.5498+129.6800/+30.5540+129.6600/+30.5600+129.6546/+30.5632+129.6600/+30.5800+129.6787/+30.5828+129.6800/+30.6000+129.6847/+30.6096+129.7000/+30.6200+129.7193/+30.6203+129.7200/+30.6287+129.7400/+30.6362+129.7600/+30.6400+129.7678/+30.6480+129.7800/+30.6600+129.7979/+30.6606+129.8000/+30.6675+129.8200/+30.6727+129.8400/+30.6800+129.8554/+30.6851+129.8600/+30.6977+129.8800/+30.7000+129.8835/+30.7066+129.9000/+30.7080+129.9200/+30.7141+129.9400/+30.7177+129.9600/+30.7200+129.9754/+30.7233+129.9800/+30.7339+130.0000/+30.7363+130.0200/+30.7394+130.0400/+30.7400+130.0435/+30.7509+130.0600/+30.7571+130.0800/+30.7593+130.1000/+30.7600+130.1054/+30.7719+130.1200/+30.7781+130.1400/+30.7795+130.1600/+30.7800+130.1717/+30.7878+130.1800/+30.7988+130.2000/+30.7998+130.2200/+30.7999+130.2400/+30.8000+130.2407/+30.8192+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+130.3186/+30.7614+130.3000/+30.7658+130.2800/+30.7800+130.2620/+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 +30.8114+130.2400/+30.8197+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8007+130.3200/+30.8000+130.3207/+30.7982+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2781/+30.7420+130.2600/+30.7403+130.2400/+30.7402+130.2200/+30.7400+130.2000/+30.7400+130.1996/+30.7225+130.1800/+30.7209+130.1600/+30.7203+130.1400/+30.7200+130.1351/+30.7073+130.1200/+30.7025+130.1000/+30.7007+130.0800/+30.7000+130.0722/+30.6916+130.0600/+30.6843+130.0400/+30.6800+130.0330/+30.6673+130.0200/+30.6642+130.0000/+30.6623+129.9800/+30.6603+129.9600/+30.6600+129.9581/+30.6480+129.9400/+30.6435+129.9200/+30.6400+129.9071/+30.6338+129.9000/+30.6233+129.8800/+30.6200+129.8667/+30.6186+129.8600/+30.6150+129.8400/+30.6128+129.8200/+30.6102+129.8000/+30.6056+129.7800/+30.6000+129.7690/+30.5952+129.7600/+30.5900+129.7400/+30.5883+129.7200/+30.5866+129.7000/+30.5912+129.6800/+30.5990+129.6600/+30.6000+129.6583/+30.6009+129.6600/+30.6127+129.6800/+30.6200+129.6907/+30.6272+129.7000/+30.6400+129.7126/+30.6466+129.7200/+30.6600+129.7342/+30.6627+129.7400/+30.6717+129.7600/+30.6794+129.7800/+30.6800+129.7820/+30.6866+129.8000/+30.6980+129.8200/+30.7000+129.8255/+30.7041+129.8400/+30.7105+129.8600/+30.7146+129.8800/+30.7168+129.9000/+30.7200+129.9150/+30.7229+129.9200/+30.7366+129.9400/+30.7400+129.9483/+30.7454+129.9600/+30.7516+129.9800/+30.7433+130.0000/+30.7530+130.0200/+30.7570+130.0400/+30.7587+130.0600/+30.7600+130.0741/+30.7649+130.0800/+30.7757+130.1000/+30.7786+130.1200/+30.7795+130.1400/+30.7800+130.1512/+30.7879+130.1600/+30.7983+130.1800/+30.7996+130.2000/+30.7998+130.2200/+30.8000+130.2286/+30.8114+130.2400/ 西 70 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/+30.7662+130.2800/+30.7800+130.2627/+30.8000+130.2661/+30.8139+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 +30.8146+130.2400/+30.8197+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3199/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2758/+30.7442+130.2600/+30.7404+130.2400/+30.7402+130.2200/+30.7402+130.2000/+30.7400+130.1911/+30.7293+130.1800/+30.7218+130.1600/+30.7208+130.1400/+30.7205+130.1200/+30.7200+130.1108/+30.7107+130.1000/+30.7034+130.0800/+30.7016+130.0600/+30.7004+130.0400/+30.7000+130.0355/+30.6843+130.0200/+30.6800+130.0114/+30.6745+130.0000/+30.6689+129.9800/+30.6659+129.9600/+30.6639+129.9400/+30.6623+129.9200/+30.6600+129.9142/+30.6478+129.9000/+30.6468+129.8800/+30.6445+129.8600/+30.6418+129.8400/+30.6400+129.8300/+30.6301+129.8200/+30.6215+129.8000/+30.6201+129.7800/+30.6200+129.7792/+30.6185+129.7600/+30.6176+129.7400/+30.6173+129.7200/+30.6170+129.7000/+30.6166+129.6800/+30.6158+129.6600/+30.6152+129.6400/+30.6168+129.6200/+30.6200+129.6146/+30.6400+129.6116/+30.6470+129.6200/+30.6600+129.6333/+30.6624+129.6400/+30.6688+129.6600/+30.6741+129.6800/+30.6786+129.7000/+30.6800+129.7052/+30.6838+129.7200/+30.6889+129.7400/+30.6965+129.7600/+30.7000+129.7655/+30.7100+129.7800/+30.7094+129.8000/+30.7142+129.8200/+30.7181+129.8400/+30.7200+129.8456/+30.7317+129.8600/+30.7399+129.8800/+30.7391+129.9000/+30.7400+129.9032/+30.7460+129.9200/+30.7509+129.9400/+30.7544+129.9600/+30.7570+129.9800/+30.7542+130.0000/+30.7575+130.0200/+30.7590+130.0400/+30.7600+130.0563/+30.7627+130.0600/+30.7750+130.0800/+30.7783+130.1000/+30.7792+130.1200/+30.7798+130.1400/+30.7800+130.1430/+30.7951+130.1600/+30.7991+130.1800/+30.7997+130.2000/+30.7999+130.2200/+30.8000+130.2253/+30.8146+130.2400/ +30.6125+129.6000/+30.6000+129.6092/+30.5980+129.6000/+30.6000+129.5892/+30.6125+129.6000/ 西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8144+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3176/+30.7624+130.3000/+30.7646+130.2800/+30.7800+130.2613/+30.8000+130.2656/+30.8144+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 +30.8191+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2956/+30.7444+130.2800/+30.7403+130.2600/+30.7401+130.2400/+30.7400+130.2373/+30.7235+130.2200/+30.7208+130.2000/+30.7201+130.1800/+30.7200+130.1792/+30.7047+130.1600/+30.7014+130.1400/+30.7000+130.1264/+30.6948+130.1200/+30.6854+130.1000/+30.6818+130.0800/+30.6800+130.0671/+30.6751+130.0600/+30.6668+130.0400/+30.6606+130.0200/+30.6600+130.0155/+30.6497+130.0000/+30.6426+129.9800/+30.6400+129.9699/+30.6363+129.9600/+30.6303+129.9400/+30.6200+129.9209/+30.6193+129.9200/+30.6161+129.9000/+30.6135+129.8800/+30.6117+129.8600/+30.6098+129.8400/+30.6053+129.8200/+30.6000+129.8043/+30.5976+129.8000/+30.5916+129.7800/+30.5868+129.7600/+30.5845+129.7400/+30.5838+129.7200/+30.5830+129.7000/+30.5846+129.6800/+30.5866+129.6600/+30.5896+129.6400/+30.5952+129.6200/+30.6000+129.6100/+30.6036+129.6200/+30.6110+129.6400/+30.6190+129.6600/+30.6200+129.6621/+30.6302+129.6800/+30.6400+129.6924/+30.6448+129.7000/+30.6576+129.7200/+30.6600+129.7237/+30.6654+129.7400/+30.6719+129.7600/+30.6781+129.7800/+30.6800+129.7948/+30.6809+129.8000/+30.6931+129.8200/+30.6996+129.8400/+30.7000+129.8409/+30.7059+129.8600/+30.7098+129.8800/+30.7128+129.9000/+30.7159+129.9200/+30.7193+129.9400/+30.7200+129.9430/+30.7320+129.9600/+30.7393+129.9800/+30.7365+130.0000/+30.7388+130.0200/+30.7400+130.0332/+30.7439+130.0400/+30.7552+130.0600/+30.7581+130.0800/+30.7599+130.1000/+30.7600+130.1005/+30.7752+130.1200/+30.7782+130.1400/+30.7795+130.1600/+30.7800+130.1672/+30.7915+130.1800/+30.7987+130.2000/+30.7997+130.2200/+30.7999+130.2400/+30.8000+130.2408/+30.8191+130.2600/ 西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8149+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3176/+30.7624+130.3000/+30.7646+130.2800/+30.7800+130.2616/+30.8000+130.2651/+30.8149+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０９時から１２時までは火口から西方向、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９時から５日３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０９時から１２時まで　西　　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　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　　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０４日２１時から２４時まで　西　　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０５日００時から０３時まで　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。