2026-09-17T17:00:00Z 通常 気象庁本庁 気象庁 2026-09-18T02:00:00+09:00 2026-09-18T03:00:00+09:00 2026-09-18T21:00:00+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時までは火口から東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 2026-09-18T03:00:00+09:00 2026-09-18T06:00:00+09:00 降灰 70 +30.8036+130.2000/+30.8077+130.2200/+30.8079+130.2400/+30.8175+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8101+130.3200/+30.8000+130.3301/+30.7800+130.3256/+30.7744+130.3200/+30.7600+130.3052/+30.7548+130.3000/+30.7403+130.2800/+30.7400+130.2772/+30.7230+130.2600/+30.7201+130.2400/+30.7200+130.2393/+30.7026+130.2200/+30.7000+130.2071/+30.6933+130.2000/+30.6830+130.1800/+30.6800+130.1634/+30.6771+130.1600/+30.6644+130.1400/+30.6600+130.1272/+30.6540+130.1200/+30.6465+130.1000/+30.6415+130.0800/+30.6400+130.0755/+30.6274+130.0600/+30.6237+130.0400/+30.6200+130.0278/+30.6173+130.0200/+30.6137+130.0000/+30.6119+129.9800/+30.6116+129.9600/+30.6109+129.9400/+30.6132+129.9200/+30.6185+129.9000/+30.6200+129.8955/+30.6267+129.8800/+30.6247+129.8600/+30.6228+129.8400/+30.6278+129.8200/+30.6319+129.8000/+30.6362+129.7800/+30.6400+129.7626/+30.6439+129.7600/+30.6600+129.7530/+30.6634+129.7600/+30.6720+129.7800/+30.6800+129.7834/+30.6939+129.8000/+30.6966+129.8200/+30.6993+129.8400/+30.7000+129.8426/+30.7053+129.8600/+30.7131+129.8800/+30.7200+129.8911/+30.7230+129.9000/+30.7292+129.9200/+30.7339+129.9400/+30.7373+129.9600/+30.7394+129.9800/+30.7383+130.0000/+30.7400+130.0061/+30.7466+130.0200/+30.7524+130.0400/+30.7558+130.0600/+30.7584+130.0800/+30.7600+130.0954/+30.7634+130.1000/+30.7738+130.1200/+30.7777+130.1400/+30.7792+130.1600/+30.7800+130.1713/+30.7883+130.1800/+30.8000+130.1958/+30.8036+130.2000/ 西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8121+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3184/+30.7616+130.3000/+30.7653+130.2800/+30.7800+130.2636/+30.8000+130.2678/+30.8121+130.2800/ 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 +30.8184+130.2800/+30.8199+130.3000/+30.8181+130.3200/+30.8000+130.3381/+30.7800+130.3392/+30.7600+130.3356/+30.7423+130.3200/+30.7400+130.3198/+30.7200+130.3184/+30.7000+130.3141/+30.6823+130.3000/+30.6800+130.2990/+30.6600+130.2918/+30.6464+130.2800/+30.6400+130.2729/+30.6256+130.2600/+30.6200+130.2551/+30.6000+130.2426/+30.5975+130.2400/+30.5836+130.2200/+30.5800+130.2153/+30.5675+130.2000/+30.5600+130.1891/+30.5512+130.1800/+30.5423+130.1600/+30.5400+130.1553/+30.5308+130.1400/+30.5209+130.1200/+30.5200+130.1182/+30.5089+130.1000/+30.5028+130.0800/+30.5000+130.0743/+30.4924+130.0600/+30.4835+130.0400/+30.4800+130.0276/+30.4767+130.0200/+30.4680+130.0000/+30.4639+129.9800/+30.4600+129.9664/+30.4581+129.9600/+30.4600+129.9559/+30.4735+129.9400/+30.4800+129.9366/+30.4872+129.9400/+30.5000+129.9464/+30.5200+129.9532/+30.5255+129.9600/+30.5400+129.9774/+30.5426+129.9800/+30.5600+129.9944/+30.5654+130.0000/+30.5800+130.0129/+30.5853+130.0200/+30.5969+130.0400/+30.6000+130.0424/+30.6200+130.0540/+30.6258+130.0600/+30.6361+130.0800/+30.6400+130.0845/+30.6578+130.1000/+30.6600+130.1019/+30.6760+130.1200/+30.6800+130.1251/+30.6957+130.1400/+30.7000+130.1448/+30.7144+130.1600/+30.7200+130.1680/+30.7343+130.1800/+30.7400+130.1935/+30.7600+130.1957/+30.7615+130.2000/+30.7671+130.2200/+30.7793+130.2400/+30.7800+130.2406/+30.7982+130.2600/+30.8000+130.2615/+30.8184+130.2800/ +30.7273+130.0600/+30.7224+130.0800/+30.7200+130.0873/+30.7000+130.0887/+30.6963+130.0800/+30.6821+130.0600/+30.6800+130.0560/+30.6764+130.0400/+30.6800+130.0326/+30.7000+130.0238/+30.7046+130.0400/+30.7200+130.0519/+30.7273+130.0600/ 南西 50 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+130.3188/+30.7606+130.3000/+30.7696+130.2800/+30.7800+130.2710/+30.7874+130.2800/+30.8000+130.2812/+30.8188+130.3000/ 南西 3 鹿児島県三島村 4630300 2026-09-18T09:00:00+09:00 2026-09-18T12:00:00+09:00 降灰 70 +30.8833+130.4600/+30.8913+130.4800/+30.8818+130.5000/+30.8800+130.5029/+30.8600+130.5176/+30.8424+130.5200/+30.8400+130.5215/+30.8382+130.5200/+30.8200+130.5133/+30.8126+130.5200/+30.8000+130.5276/+30.7912+130.5200/+30.7800+130.5121/+30.7600+130.5062/+30.7511+130.5000/+30.7422+130.4800/+30.7400+130.4778/+30.7200+130.4733/+30.7128+130.4800/+30.7000+130.4932/+30.6896+130.4800/+30.6810+130.4600/+30.6800+130.4583/+30.6679+130.4400/+30.6600+130.4310/+30.6433+130.4200/+30.6400+130.4147/+30.6342+130.4000/+30.6274+130.3800/+30.6201+130.3600/+30.6238+130.3400/+30.6400+130.3265/+30.6474+130.3200/+30.6600+130.3105/+30.6800+130.3016/+30.6861+130.3000/+30.7000+130.2919/+30.7200+130.2835/+30.7400+130.2810/+30.7600+130.2802/+30.7800+130.2800/+30.8000+130.2801/+30.8199+130.3000/+30.8200+130.3027/+30.8373+130.3200/+30.8393+130.3400/+30.8400+130.3552/+30.8446+130.3600/+30.8570+130.3800/+30.8600+130.3998/+30.8602+130.4000/+30.8723+130.4200/+30.8778+130.4400/+30.8800+130.4526/+30.8833+130.4600/ 東 20 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8188+130.3000/+30.8178+130.3200/+30.8000+130.3382/+30.7800+130.3330/+30.7664+130.3200/+30.7612+130.3000/+30.7800+130.2816/+30.8000+130.2812/+30.8188+130.3000/ 南東 2 鹿児島県三島村 4630300 2026-09-18T12:00:00+09:00 2026-09-18T15:00:00+09:00 降灰 70 +31.1033+130.3200/+31.1072+130.3400/+31.1000+130.3571/+31.0981+130.3600/+31.0800+130.3714/+31.0751+130.3800/+31.0600+130.3988/+31.0593+130.4000/+31.0400+130.4085/+31.0200+130.4112/+31.0000+130.4161/+30.9800+130.4179/+30.9635+130.4200/+30.9600+130.4211/+30.9400+130.4203/+30.9200+130.4229/+30.9129+130.4200/+30.9000+130.4183/+30.8800+130.4146/+30.8600+130.4007/+30.8592+130.4000/+30.8400+130.3963/+30.8231+130.3800/+30.8200+130.3790/+30.8010+130.3600/+30.8000+130.3596/+30.7805+130.3400/+30.7800+130.3397/+30.7603+130.3200/+30.7602+130.3000/+30.7800+130.2802/+30.8000+130.2800/+30.8200+130.2802/+30.8400+130.2811/+30.8600+130.2827/+30.8800+130.2848/+30.9000+130.2850/+30.9200+130.2861/+30.9400+130.2894/+30.9600+130.2890/+30.9800+130.2881/+31.0000+130.2874/+31.0200+130.2876/+31.0400+130.2844/+31.0600+130.2800/+31.0800+130.2985/+31.0838+130.3000/+31.1000+130.3147/+31.1033+130.3200/ 北 30 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8190+130.3000/+30.8177+130.3200/+30.8000+130.3376/+30.7830+130.3200/+30.7812+130.3000/+30.8000+130.2812/+30.8190+130.3000/ 北東 2 鹿児島県三島村 4630300 2026-09-18T15:00:00+09:00 2026-09-18T18:00:00+09:00 降灰 70 +30.9861+130.0400/+30.9821+130.0600/+30.9800+130.0644/+30.9738+130.0800/+30.9720+130.1000/+30.9674+130.1200/+30.9676+130.1400/+30.9621+130.1600/+30.9600+130.1635/+30.9515+130.1800/+30.9470+130.2000/+30.9400+130.2120/+30.9378+130.2200/+30.9306+130.2400/+30.9200+130.2525/+30.9169+130.2600/+30.9030+130.2800/+30.9000+130.2830/+30.8800+130.2986/+30.8787+130.3000/+30.8600+130.3165/+30.8410+130.3200/+30.8400+130.3209/+30.8200+130.3389/+30.8000+130.3398/+30.7800+130.3390/+30.7610+130.3200/+30.7602+130.3000/+30.7706+130.2800/+30.7800+130.2706/+30.7816+130.2600/+30.8000+130.2414/+30.8010+130.2400/+30.8130+130.2200/+30.8200+130.2125/+30.8245+130.2000/+30.8400+130.1809/+30.8405+130.1800/+30.8479+130.1600/+30.8600+130.1450/+30.8632+130.1400/+30.8724+130.1200/+30.8800+130.1104/+30.8856+130.1000/+30.8955+130.0800/+30.9000+130.0700/+30.9049+130.0600/+30.9200+130.0456/+30.9302+130.0400/+30.9400+130.0224/+30.9439+130.0200/+30.9600+130.0083/+30.9753+130.0200/+30.9800+130.0259/+30.9861+130.0400/ 北西 30 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8190+130.3000/+30.8000+130.3190/+30.7812+130.3000/+30.8000+130.2806/+30.8190+130.3000/ 北西 1 鹿児島県三島村 4630300 2026-09-18T18:00:00+09:00 2026-09-18T21:00:00+09:00 降灰 70 +30.9823+129.8400/+30.9815+129.8600/+30.9808+129.8800/+30.9800+129.8934/+30.9796+129.9000/+30.9783+129.9200/+30.9700+129.9400/+30.9600+129.9530/+30.9587+129.9600/+30.9552+129.9800/+30.9526+130.0000/+30.9490+130.0200/+30.9423+130.0400/+30.9400+130.0431/+30.9311+130.0600/+30.9200+130.0739/+30.9188+130.0800/+30.9162+130.1000/+30.9057+130.1200/+30.9000+130.1268/+30.8985+130.1400/+30.8940+130.1600/+30.8800+130.1770/+30.8797+130.1800/+30.8787+130.2000/+30.8688+130.2200/+30.8600+130.2316/+30.8597+130.2400/+30.8555+130.2600/+30.8400+130.2759/+30.8399+130.2800/+30.8385+130.3000/+30.8200+130.3185/+30.8177+130.3200/+30.8000+130.3377/+30.7800+130.3338/+30.7662+130.3200/+30.7602+130.3000/+30.7613+130.2800/+30.7800+130.2613/+30.7801+130.2600/+30.7809+130.2400/+30.8000+130.2200/+30.8008+130.2000/+30.8048+130.1800/+30.8200+130.1620/+30.8203+130.1600/+30.8223+130.1400/+30.8288+130.1200/+30.8400+130.1032/+30.8405+130.1000/+30.8442+130.0800/+30.8513+130.0600/+30.8600+130.0439/+30.8607+130.0400/+30.8658+130.0200/+30.8667+130.0000/+30.8760+129.9800/+30.8800+129.9665/+30.8814+129.9600/+30.8871+129.9400/+30.8977+129.9200/+30.8990+129.9000/+30.9000+129.8978/+30.9102+129.8800/+30.9200+129.8626/+30.9223+129.8600/+30.9352+129.8400/+30.9400+129.8250/+30.9417+129.8200/+30.9600+129.8013/+30.9759+129.8200/+30.9800+129.8327/+30.9823+129.8400/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8069+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7952+130.2800/+30.8000+130.2741/+30.8069+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時までは火口から東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　西　　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日０６時から０９時まで　南西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日０９時から１２時まで　東　　　　　　　２０ｋｍ　　２ｋｍ　　　　　 　１８日１２時から１５時まで　北　　　　　　　３０ｋｍ　　２ｋｍ　　　　　 　１８日１５時から１８時まで　北西　　　　　　３０ｋｍ　　１ｋｍ　　　　　 　１８日１８時から２１時まで　北西　　　　　　５０ｋｍ　　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。