2026-09-17T05:00:00Z 通常 気象庁本庁 気象庁 2026-09-17T14:00:00+09:00 2026-09-17T15:00:00+09:00 2026-09-18T09:00:00+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、１７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 2026-09-17T15:00:00+09:00 2026-09-17T18:00:00+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 +30.8138+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3173/+30.7627+130.3000/+30.7652+130.2800/+30.7800+130.2614/+30.8000+130.2631/+30.8138+130.2800/ 西 3 鹿児島県三島村 4630300 2026-09-17T18:00:00+09:00 2026-09-17T21:00:00+09:00 降灰 70 +30.8090+130.2200/+30.8180+130.2400/+30.8197+130.2600/+30.8199+130.2800/+30.8198+130.3000/+30.8000+130.3199/+30.7800+130.3198/+30.7602+130.3000/+30.7601+130.2800/+30.7600+130.2781/+30.7419+130.2600/+30.7404+130.2400/+30.7402+130.2200/+30.7401+130.2000/+30.7400+130.1967/+30.7249+130.1800/+30.7217+130.1600/+30.7210+130.1400/+30.7205+130.1200/+30.7200+130.1109/+30.7115+130.1000/+30.7048+130.0800/+30.7030+130.0600/+30.7016+130.0400/+30.7002+130.0200/+30.7000+130.0193/+30.6838+130.0000/+30.6821+129.9800/+30.6803+129.9600/+30.6800+129.9569/+30.6761+129.9400/+30.6725+129.9200/+30.6660+129.9000/+30.6630+129.8800/+30.6635+129.8600/+30.6641+129.8400/+30.6641+129.8200/+30.6638+129.8000/+30.6637+129.7800/+30.6647+129.7600/+30.6660+129.7400/+30.6676+129.7200/+30.6695+129.7000/+30.6713+129.6800/+30.6736+129.6600/+30.6768+129.6400/+30.6800+129.6252/+30.6813+129.6200/+30.6872+129.6000/+30.6899+129.5800/+30.6927+129.5600/+30.6961+129.5400/+30.7000+129.5235/+30.7057+129.5400/+30.7107+129.5600/+30.7144+129.5800/+30.7180+129.6000/+30.7200+129.6041/+30.7269+129.6200/+30.7339+129.6400/+30.7400+129.6585/+30.7405+129.6600/+30.7467+129.6800/+30.7521+129.7000/+30.7553+129.7200/+30.7580+129.7400/+30.7600+129.7489/+30.7622+129.7600/+30.7669+129.7800/+30.7600+129.7921/+30.7580+129.8000/+30.7600+129.8158/+30.7614+129.8200/+30.7669+129.8400/+30.7712+129.8600/+30.7745+129.8800/+30.7707+129.9000/+30.7722+129.9200/+30.7744+129.9400/+30.7758+129.9600/+30.7768+129.9800/+30.7759+130.0000/+30.7769+130.0200/+30.7784+130.0400/+30.7792+130.0600/+30.7798+130.0800/+30.7800+130.0841/+30.7891+130.1000/+30.7950+130.1200/+30.7987+130.1400/+30.7994+130.1600/+30.7998+130.1800/+30.8000+130.2000/+30.8000+130.2039/+30.8090+130.2200/ 西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8050+130.2600/+30.8158+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3178/+30.7622+130.3000/+30.7642+130.2800/+30.7782+130.2600/+30.7800+130.2568/+30.8000+130.2548/+30.8050+130.2600/ 西 5 鹿児島県三島村 4630300 2026-09-17T21:00:00+09:00 2026-09-18T00:00:00+09:00 降灰 70 +30.8217+129.8000/+30.8229+129.8200/+30.8239+129.8400/+30.8271+129.8600/+30.8293+129.8800/+30.8300+129.9000/+30.8312+129.9200/+30.8328+129.9400/+30.8340+129.9600/+30.8349+129.9800/+30.8292+130.0000/+30.8276+130.0200/+30.8238+130.0400/+30.8241+130.0600/+30.8226+130.0800/+30.8200+130.0995/+30.8200+130.1000/+30.8199+130.1200/+30.8197+130.1400/+30.8197+130.1600/+30.8197+130.1800/+30.8198+130.2000/+30.8199+130.2200/+30.8199+130.2400/+30.8199+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3199/+30.7800+130.3198/+30.7602+130.3000/+30.7601+130.2800/+30.7601+130.2600/+30.7600+130.2566/+30.7444+130.2400/+30.7416+130.2200/+30.7410+130.2000/+30.7409+130.1800/+30.7405+130.1600/+30.7400+130.1436/+30.7376+130.1400/+30.7288+130.1200/+30.7261+130.1000/+30.7244+130.0800/+30.7233+130.0600/+30.7228+130.0400/+30.7216+130.0200/+30.7200+130.0116/+30.7109+130.0000/+30.7068+129.9800/+30.7071+129.9600/+30.7076+129.9400/+30.7084+129.9200/+30.7047+129.9000/+30.7054+129.8800/+30.7054+129.8600/+30.7055+129.8400/+30.7062+129.8200/+30.7070+129.8000/+30.7118+129.7800/+30.7139+129.7600/+30.7171+129.7400/+30.7200+129.7254/+30.7211+129.7200/+30.7257+129.7000/+30.7296+129.6800/+30.7337+129.6600/+30.7386+129.6400/+30.7400+129.6354/+30.7600+129.6222/+30.7716+129.6400/+30.7800+129.6572/+30.7813+129.6600/+30.7897+129.6800/+30.7980+129.7000/+30.8000+129.7028/+30.8053+129.7200/+30.8104+129.7400/+30.8151+129.7600/+30.8194+129.7800/+30.8200+129.7844/+30.8217+129.8000/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8024+130.2600/+30.8165+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3146/+30.7654+130.3000/+30.7653+130.2800/+30.7753+130.2600/+30.7800+130.2529/+30.8000+130.2561/+30.8024+130.2600/ 西 5 鹿児島県三島村 4630300 2026-09-18T00:00:00+09:00 2026-09-18T03:00:00+09:00 降灰 70 +30.9220+129.7400/+30.9227+129.7600/+30.9216+129.7800/+30.9207+129.8000/+30.9200+129.8037/+30.9169+129.8200/+30.9145+129.8400/+30.9137+129.8600/+30.9131+129.8800/+30.9128+129.9000/+30.9105+129.9200/+30.9099+129.9400/+30.9049+129.9600/+30.9000+129.9673/+30.8980+129.9800/+30.8962+130.0000/+30.8901+130.0200/+30.8882+130.0400/+30.8800+130.0572/+30.8797+130.0600/+30.8773+130.0800/+30.8764+130.1000/+30.8792+130.1200/+30.8800+130.1322/+30.8816+130.1400/+30.8825+130.1600/+30.8800+130.1629/+30.8710+130.1800/+30.8637+130.2000/+30.8600+130.2072/+30.8578+130.2200/+30.8498+130.2400/+30.8400+130.2531/+30.8398+130.2600/+30.8383+130.2800/+30.8200+130.2991/+30.8200+130.3000/+30.8144+130.3200/+30.8000+130.3344/+30.7800+130.3285/+30.7715+130.3200/+30.7602+130.3000/+30.7602+130.2800/+30.7604+130.2600/+30.7609+130.2400/+30.7619+130.2200/+30.7638+130.2000/+30.7672+130.1800/+30.7736+130.1600/+30.7800+130.1422/+30.7801+130.1400/+30.7806+130.1200/+30.7815+130.1000/+30.7833+130.0800/+30.7839+130.0600/+30.7871+130.0400/+30.7923+130.0200/+30.7942+130.0000/+30.7912+129.9800/+30.7949+129.9600/+30.8000+129.9421/+30.8005+129.9400/+30.8064+129.9200/+30.8116+129.9000/+30.8152+129.8800/+30.8200+129.8615/+30.8205+129.8600/+30.8289+129.8400/+30.8337+129.8200/+30.8395+129.8000/+30.8400+129.7983/+30.8486+129.7800/+30.8592+129.7600/+30.8600+129.7583/+30.8696+129.7400/+30.8790+129.7200/+30.8800+129.7178/+30.8884+129.7000/+30.8986+129.6800/+30.9000+129.6775/+30.9018+129.6800/+30.9131+129.7000/+30.9186+129.7200/+30.9200+129.7274/+30.9220+129.7400/ +30.9072+130.1200/+30.9000+130.1257/+30.8851+130.1200/+30.9000+130.1066/+30.9072+130.1200/ 西 60 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/+30.7812+130.3000/+30.7851+130.2800/+30.8000+130.2618/+30.8150+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-09-18T03:00:00+09:00 2026-09-18T06:00:00+09:00 降灰 70 +31.0045+130.0400/+31.0026+130.0600/+31.0000+130.0672/+30.9971+130.0800/+30.9869+130.1000/+30.9800+130.1060/+30.9725+130.1200/+30.9600+130.1340/+30.9564+130.1400/+30.9400+130.1577/+30.9376+130.1600/+30.9200+130.1770/+30.9176+130.1800/+30.9000+130.1990/+30.8991+130.2000/+30.8827+130.2200/+30.8800+130.2227/+30.8690+130.2400/+30.8600+130.2491/+30.8517+130.2600/+30.8400+130.2719/+30.8387+130.2800/+30.8200+130.2995/+30.8200+130.3000/+30.8148+130.3200/+30.8000+130.3348/+30.7800+130.3289/+30.7711+130.3200/+30.7602+130.3000/+30.7602+130.2800/+30.7614+130.2600/+30.7800+130.2406/+30.7800+130.2400/+30.7802+130.2200/+30.7805+130.2000/+30.7815+130.1800/+30.7847+130.1600/+30.7965+130.1400/+30.8000+130.1352/+30.8010+130.1200/+30.8024+130.1000/+30.8059+130.0800/+30.8190+130.0600/+30.8200+130.0583/+30.8220+130.0400/+30.8254+130.0200/+30.8314+130.0000/+30.8374+129.9800/+30.8400+129.9765/+30.8437+129.9600/+30.8498+129.9400/+30.8600+129.9211/+30.8608+129.9200/+30.8691+129.9000/+30.8800+129.8801/+30.8801+129.8800/+30.8880+129.8600/+30.8973+129.8400/+30.9000+129.8326/+30.9057+129.8200/+30.9200+129.8031/+30.9236+129.8000/+30.9342+129.7800/+30.9400+129.7710/+30.9600+129.7606/+30.9763+129.7800/+30.9796+129.8000/+30.9777+129.8200/+30.9743+129.8400/+30.9673+129.8600/+30.9600+129.8727/+30.9579+129.8800/+30.9544+129.9000/+30.9517+129.9200/+30.9425+129.9400/+30.9400+129.9461/+30.9367+129.9600/+30.9335+129.9800/+30.9287+130.0000/+30.9207+130.0200/+30.9200+130.0206/+30.9000+130.0344/+30.8989+130.0400/+30.8949+130.0600/+30.8867+130.0800/+30.8800+130.0901/+30.8792+130.1000/+30.8780+130.1200/+30.8735+130.1400/+30.8800+130.1492/+30.8902+130.1400/+30.9000+130.1286/+30.9062+130.1200/+30.9196+130.1000/+30.9200+130.0994/+30.9400+130.0807/+30.9411+130.0800/+30.9537+130.0600/+30.9600+130.0521/+30.9782+130.0400/+30.9800+130.0379/+31.0000+130.0323/+31.0045+130.0400/ +30.8636+130.1600/+30.8604+130.1800/+30.8600+130.1805/+30.8599+130.1800/+30.8599+130.1600/+30.8600+130.1578/+30.8636+130.1600/ 西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8102+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7900+130.2800/+30.8000+130.2674/+30.8102+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-09-18T06:00:00+09:00 2026-09-18T09:00:00+09:00 降灰 70 +30.9602+129.7400/+30.9639+129.7600/+30.9650+129.7800/+30.9658+129.8000/+30.9600+129.8087/+30.9546+129.8200/+30.9509+129.8400/+30.9458+129.8600/+30.9400+129.8800/+30.9400+129.8801/+30.9338+129.9000/+30.9279+129.9200/+30.9200+129.9378/+30.9196+129.9400/+30.9148+129.9600/+30.9061+129.9800/+30.9000+129.9898/+30.8987+130.0000/+30.8893+130.0200/+30.8800+130.0326/+30.8792+130.0400/+30.8755+130.0600/+30.8705+130.0800/+30.8600+130.0942/+30.8595+130.1000/+30.8586+130.1200/+30.8571+130.1400/+30.8539+130.1600/+30.8400+130.1771/+30.8399+130.1800/+30.8397+130.2000/+30.8400+130.2181/+30.8419+130.2200/+30.8426+130.2400/+30.8400+130.2434/+30.8384+130.2600/+30.8271+130.2800/+30.8200+130.2875/+30.8199+130.3000/+30.8106+130.3200/+30.8000+130.3306/+30.7800+130.3201/+30.7799+130.3200/+30.7602+130.3000/+30.7601+130.2800/+30.7603+130.2600/+30.7612+130.2400/+30.7647+130.2200/+30.7732+130.2000/+30.7800+130.1900/+30.7802+130.1800/+30.7807+130.1600/+30.7813+130.1400/+30.7826+130.1200/+30.7856+130.1000/+30.7918+130.0800/+30.8000+130.0653/+30.8006+130.0600/+30.8017+130.0400/+30.8048+130.0200/+30.8107+130.0000/+30.8081+129.9800/+30.8146+129.9600/+30.8200+129.9488/+30.8238+129.9400/+30.8400+129.9202/+30.8401+129.9200/+30.8451+129.9000/+30.8506+129.8800/+30.8562+129.8600/+30.8600+129.8499/+30.8648+129.8400/+30.8762+129.8200/+30.8800+129.8155/+30.8907+129.8000/+30.8991+129.7800/+30.9000+129.7790/+30.9200+129.7684/+30.9287+129.7600/+30.9400+129.7410/+30.9545+129.7400/+30.9600+129.7395/+30.9602+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+130.2658/+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、１７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。 　１７日１５時から１８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 　１７日１５時から１８時まで　西　　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　１７日１８時から２１時まで　西　　　　　　　７０ｋｍ　　５ｋｍ　　　　　 　１７日２１時から２４時まで　西　　　　　　　６０ｋｍ　　５ｋｍ　　　　　 　１８日００時から０３時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　１８日０３時から０６時まで　西　　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日０６時から０９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。