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+09:00 508 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、１８日０９時から１２時までは火口から北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 2026-08-18T03:00:00+09:00 2026-08-18T06:00:00+09:00 降灰 70 +31.1311+129.9600/+31.1205+129.9800/+31.1200+129.9806/+31.1094+130.0000/+31.1000+130.0115/+31.0913+130.0200/+31.0800+130.0289/+31.0740+130.0400/+31.0600+130.0559/+31.0566+130.0600/+31.0400+130.0793/+31.0395+130.0800/+31.0200+130.0948/+31.0167+130.1000/+31.0000+130.1153/+30.9926+130.1200/+30.9800+130.1318/+30.9725+130.1400/+30.9600+130.1516/+30.9534+130.1600/+30.9400+130.1734/+30.9352+130.1800/+30.9200+130.1953/+30.9166+130.2000/+30.9000+130.2164/+30.8982+130.2200/+30.8800+130.2384/+30.8793+130.2400/+30.8600+130.2597/+30.8599+130.2600/+30.8554+130.2800/+30.8400+130.2954/+30.8397+130.3000/+30.8200+130.3196/+30.8181+130.3200/+30.8000+130.3381/+30.7800+130.3326/+30.7674+130.3200/+30.7604+130.3000/+30.7637+130.2800/+30.7800+130.2637/+30.7802+130.2600/+30.7841+130.2400/+30.8000+130.2231/+30.8010+130.2200/+30.8086+130.2000/+30.8200+130.1871/+30.8232+130.1800/+30.8400+130.1620/+30.8421+130.1600/+30.8567+130.1400/+30.8600+130.1362/+30.8735+130.1200/+30.8800+130.1135/+30.8948+130.1000/+30.9000+130.0949/+30.9200+130.0802/+30.9202+130.0800/+30.9335+130.0600/+30.9400+130.0522/+30.9600+130.0403/+30.9605+130.0400/+30.9751+130.0200/+30.9800+130.0149/+31.0000+130.0004/+31.0006+130.0000/+31.0200+129.9866/+31.0287+129.9800/+31.0400+129.9682/+31.0569+129.9600/+31.0600+129.9568/+31.0800+129.9417/+31.0934+129.9400/+31.1000+129.9384/+31.1055+129.9400/+31.1200+129.9433/+31.1311+129.9600/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8084+130.2800/+30.8193+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7952+130.2800/+30.8000+130.2745/+30.8084+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T06:00:00+09:00 2026-08-18T09:00:00+09:00 降灰 70 +31.0003+129.8600/+31.0062+129.8800/+31.0022+129.9000/+31.0000+129.9111/+30.9984+129.9200/+30.9920+129.9400/+30.9873+129.9600/+30.9826+129.9800/+30.9800+129.9869/+30.9767+130.0000/+30.9699+130.0200/+30.9600+130.0339/+30.9581+130.0400/+30.9492+130.0600/+30.9400+130.0755/+30.9388+130.0800/+30.9302+130.1000/+30.9200+130.1124/+30.9179+130.1200/+30.9100+130.1400/+30.9000+130.1507/+30.8979+130.1600/+30.8899+130.1800/+30.8800+130.1906/+30.8788+130.2000/+30.8704+130.2200/+30.8600+130.2305/+30.8594+130.2400/+30.8547+130.2600/+30.8400+130.2741/+30.8399+130.2800/+30.8382+130.3000/+30.8200+130.3182/+30.8168+130.3200/+30.8000+130.3368/+30.7800+130.3309/+30.7691+130.3200/+30.7602+130.3000/+30.7611+130.2800/+30.7800+130.2611/+30.7801+130.2600/+30.7806+130.2400/+30.7847+130.2200/+30.8000+130.2027/+30.8004+130.2000/+30.8021+130.1800/+30.8063+130.1600/+30.8200+130.1407/+30.8202+130.1400/+30.8228+130.1200/+30.8283+130.1000/+30.8400+130.0831/+30.8415+130.0800/+30.8469+130.0600/+30.8577+130.0400/+30.8600+130.0360/+30.8652+130.0200/+30.8708+130.0000/+30.8800+129.9866/+30.8844+129.9800/+30.8952+129.9600/+30.9000+129.9529/+30.9071+129.9400/+30.9196+129.9200/+30.9200+129.9192/+30.9330+129.9000/+30.9400+129.8893/+30.9459+129.8800/+30.9600+129.8617/+30.9800+129.8611/+30.9954+129.8600/+31.0000+129.8593/+31.0003+129.8600/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8059+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7952+130.2800/+30.8000+130.2742/+30.8059+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T09:00:00+09:00 2026-08-18T12:00:00+09:00 降灰 70 +31.0312+129.8600/+31.0304+129.8800/+31.0236+129.9000/+31.0200+129.9137/+31.0185+129.9200/+31.0087+129.9400/+31.0000+129.9518/+30.9973+129.9600/+30.9896+129.9800/+30.9800+129.9985/+30.9794+130.0000/+30.9688+130.0200/+30.9600+130.0286/+30.9567+130.0400/+30.9400+130.0573/+30.9383+130.0600/+30.9290+130.0800/+30.9200+130.0903/+30.9177+130.1000/+30.9096+130.1200/+30.9000+130.1311/+30.8986+130.1400/+30.8919+130.1600/+30.8800+130.1732/+30.8792+130.1800/+30.8762+130.2000/+30.8600+130.2170/+30.8597+130.2200/+30.8589+130.2400/+30.8400+130.2596/+30.8400+130.2600/+30.8399+130.2800/+30.8364+130.3000/+30.8200+130.3164/+30.8151+130.3200/+30.8000+130.3351/+30.7800+130.3269/+30.7731+130.3200/+30.7602+130.3000/+30.7611+130.2800/+30.7800+130.2611/+30.7801+130.2600/+30.7805+130.2400/+30.7901+130.2200/+30.8000+130.2100/+30.8005+130.2000/+30.8030+130.1800/+30.8200+130.1604/+30.8201+130.1600/+30.8219+130.1400/+30.8281+130.1200/+30.8400+130.1055/+30.8413+130.1000/+30.8463+130.0800/+30.8600+130.0620/+30.8608+130.0600/+30.8661+130.0400/+30.8800+130.0223/+30.8811+130.0200/+30.8800+130.0030/+30.8791+130.0000/+30.8800+129.9986/+30.8931+129.9800/+30.9000+129.9713/+30.9043+129.9600/+30.9145+129.9400/+30.9200+129.9316/+30.9288+129.9200/+30.9389+129.9000/+30.9400+129.8984/+30.9600+129.8803/+30.9605+129.8800/+30.9793+129.8600/+30.9800+129.8593/+30.9986+129.8400/+31.0000+129.8382/+31.0083+129.8400/+31.0200+129.8434/+31.0312+129.8600/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8092+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7923+130.2800/+30.8000+130.2707/+30.8092+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T12:00:00+09:00 2026-08-18T15:00:00+09:00 降灰 70 +31.0254+129.8400/+31.0232+129.8600/+31.0200+129.8705/+31.0181+129.8800/+31.0060+129.9000/+31.0000+129.9068/+30.9939+129.9200/+30.9880+129.9400/+30.9800+129.9538/+30.9769+129.9600/+30.9639+129.9800/+30.9600+129.9843/+30.9542+130.0000/+30.9463+130.0200/+30.9400+130.0314/+30.9352+130.0400/+30.9200+130.0553/+30.9187+130.0600/+30.9128+130.0800/+30.9000+130.0981/+30.8995+130.1000/+30.8954+130.1200/+30.8813+130.1400/+30.8800+130.1415/+30.8779+130.1600/+30.8727+130.1800/+30.8600+130.1941/+30.8595+130.2000/+30.8584+130.2200/+30.8478+130.2400/+30.8400+130.2479/+30.8399+130.2600/+30.8395+130.2800/+30.8200+130.2999/+30.8200+130.3000/+30.8130+130.3200/+30.8000+130.3330/+30.7800+130.3225/+30.7775+130.3200/+30.7602+130.3000/+30.7603+130.2800/+30.7655+130.2600/+30.7800+130.2449/+30.7801+130.2400/+30.7804+130.2200/+30.7815+130.2000/+30.7849+130.1800/+30.7957+130.1600/+30.8000+130.1529/+30.8010+130.1400/+30.8042+130.1200/+30.8114+130.1000/+30.8200+130.0878/+30.8218+130.0800/+30.8270+130.0600/+30.8372+130.0400/+30.8400+130.0358/+30.8450+130.0200/+30.8495+130.0000/+30.8600+129.9836/+30.8627+129.9800/+30.8726+129.9600/+30.8800+129.9495/+30.8869+129.9400/+30.9000+129.9264/+30.9044+129.9200/+30.9090+129.9000/+30.9200+129.8895/+30.9287+129.8800/+30.9400+129.8600/+30.9400+129.8599/+30.9568+129.8400/+30.9600+129.8362/+30.9800+129.8228/+30.9841+129.8200/+31.0000+129.8024/+31.0197+129.8200/+31.0200+129.8206/+31.0254+129.8400/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8092+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7908+130.2800/+30.8000+130.2685/+30.8092+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T15:00:00+09:00 2026-08-18T18:00:00+09:00 降灰 70 +31.0054+129.7600/+31.0129+129.7800/+31.0168+129.8000/+31.0104+129.8200/+31.0064+129.8400/+31.0000+129.8495/+30.9945+129.8600/+30.9883+129.8800/+30.9824+129.9000/+30.9800+129.9076/+30.9760+129.9200/+30.9600+129.9388/+30.9595+129.9400/+30.9529+129.9600/+30.9458+129.9800/+30.9400+129.9929/+30.9379+130.0000/+30.9330+130.0200/+30.9200+130.0345/+30.9178+130.0400/+30.9089+130.0600/+30.9000+130.0727/+30.8982+130.0800/+30.8945+130.1000/+30.8830+130.1200/+30.8800+130.1237/+30.8782+130.1400/+30.8735+130.1600/+30.8600+130.1764/+30.8597+130.1800/+30.8589+130.2000/+30.8564+130.2200/+30.8400+130.2374/+30.8399+130.2400/+30.8398+130.2600/+30.8392+130.2800/+30.8217+130.3000/+30.8200+130.3017/+30.8114+130.3200/+30.8000+130.3314/+30.7811+130.3200/+30.7800+130.3200/+30.7602+130.3000/+30.7603+130.2800/+30.7665+130.2600/+30.7800+130.2464/+30.7801+130.2400/+30.7803+130.2200/+30.7810+130.2000/+30.7837+130.1800/+30.7949+130.1600/+30.8000+130.1531/+30.8008+130.1400/+30.8025+130.1200/+30.8053+130.1000/+30.8135+130.0800/+30.8200+130.0698/+30.8216+130.0600/+30.8245+130.0400/+30.8299+130.0200/+30.8392+130.0000/+30.8400+129.9973/+30.8423+129.9800/+30.8472+129.9600/+30.8555+129.9400/+30.8600+129.9312/+30.8661+129.9200/+30.8745+129.9000/+30.8800+129.8901/+30.8854+129.8800/+30.8942+129.8600/+30.9000+129.8502/+30.9075+129.8400/+30.9200+129.8200/+30.9356+129.8000/+30.9400+129.7931/+30.9560+129.7800/+30.9600+129.7768/+30.9800+129.7679/+30.9916+129.7600/+31.0000+129.7534/+31.0054+129.7600/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8119+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7900+130.2800/+30.8000+130.2677/+30.8119+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T18:00:00+09:00 2026-08-18T21:00:00+09:00 降灰 70 +31.0328+129.7400/+31.0355+129.7600/+31.0309+129.7800/+31.0291+129.8000/+31.0217+129.8200/+31.0200+129.8245/+31.0145+129.8400/+31.0006+129.8600/+31.0000+129.8608/+30.9928+129.8800/+30.9859+129.9000/+30.9800+129.9147/+30.9777+129.9200/+30.9616+129.9400/+30.9600+129.9414/+30.9552+129.9600/+30.9501+129.9800/+30.9402+130.0000/+30.9400+130.0003/+30.9338+130.0200/+30.9200+130.0324/+30.9161+130.0400/+30.9088+130.0600/+30.9000+130.0705/+30.8977+130.0800/+30.8933+130.1000/+30.8800+130.1186/+30.8798+130.1200/+30.8778+130.1400/+30.8731+130.1600/+30.8600+130.1749/+30.8595+130.1800/+30.8587+130.2000/+30.8546+130.2200/+30.8400+130.2355/+30.8399+130.2400/+30.8398+130.2600/+30.8391+130.2800/+30.8298+130.3000/+30.8200+130.3098/+30.8059+130.3200/+30.8000+130.3259/+30.7904+130.3200/+30.7800+130.3199/+30.7603+130.3000/+30.7603+130.2800/+30.7620+130.2600/+30.7800+130.2410/+30.7800+130.2400/+30.7802+130.2200/+30.7807+130.2000/+30.7819+130.1800/+30.7860+130.1600/+30.7985+130.1400/+30.8000+130.1377/+30.8012+130.1200/+30.8029+130.1000/+30.8074+130.0800/+30.8166+130.0600/+30.8200+130.0544/+30.8230+130.0400/+30.8260+130.0200/+30.8362+130.0000/+30.8400+129.9906/+30.8423+129.9800/+30.8471+129.9600/+30.8556+129.9400/+30.8600+129.9335/+30.8710+129.9200/+30.8800+129.9023/+30.8810+129.9000/+30.8897+129.8800/+30.8971+129.8600/+30.9000+129.8543/+30.9101+129.8400/+30.9200+129.8254/+30.9233+129.8200/+30.9341+129.8000/+30.9400+129.7917/+30.9530+129.7800/+30.9600+129.7740/+30.9761+129.7600/+30.9800+129.7554/+30.9925+129.7400/+31.0000+129.7313/+31.0200+129.7348/+31.0328+129.7400/ 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/+30.7812+130.3000/+30.7884+130.2800/+30.8000+130.2652/+30.8116+130.2800/ 北西 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、１８日０９時から１２時までは火口から北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　　３ｋｍ　　　　　 　１８日０６時から０９時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日０９時から１２時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日１２時から１５時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日１５時から１８時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　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：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。