2026-08-20T20:00:00Z 通常 気象庁本庁 気象庁 2026-08-21T05:00:00+09:00 2026-08-21T06:00:00+09:00 2026-08-22T00:00:00+09:00 511 発表 1 降灰予報 1.1_0 　現在、諏訪之瀬島は噴火警戒レベル２（火口周辺規制）です。諏訪之瀬島で噴火が発生した場合には、２１日０９時から１２時までは火口から北西方向、２１日２１時から２４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 諏訪之瀬島 511 降灰 70 鹿児島県十島村 4630400 小さな噴石の落下 75 鹿児島県十島村 4630400 降灰予報（定時） 06 諏訪之瀬島 511 +2938.30+12942.83+796/ 降灰 70 鹿児島県十島村 4630400 小さな噴石の落下 75 鹿児島県十島村 4630400 2026-08-21T06:00:00+09:00 2026-08-21T09:00:00+09:00 降灰 70 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北西 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6756+129.7000/+29.6600+129.7156/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6812/+29.6600+129.6806/+29.6756+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-21T09:00:00+09:00 2026-08-21T12:00:00+09:00 降灰 70 +30.1011+129.1800/+30.1143+129.2000/+30.1000+129.2166/+30.0896+129.2200/+30.0814+129.2400/+30.0800+129.2430/+30.0737+129.2600/+30.0600+129.2769/+30.0566+129.2800/+30.0432+129.3000/+30.0400+129.3042/+30.0296+129.3200/+30.0200+129.3322/+30.0131+129.3400/+30.0000+129.3533/+29.9958+129.3600/+29.9807+129.3800/+29.9800+129.3806/+29.9600+129.3941/+29.9561+129.4000/+29.9473+129.4200/+29.9400+129.4285/+29.9200+129.4396/+29.9197+129.4400/+29.9090+129.4600/+29.9000+129.4708/+29.8907+129.4800/+29.8800+129.4875/+29.8724+129.5000/+29.8600+129.5189/+29.8522+129.5200/+29.8400+129.5222/+29.8253+129.5400/+29.8200+129.5453/+29.8118+129.5600/+29.8000+129.5719/+29.7948+129.5800/+29.7800+129.5951/+29.7773+129.6000/+29.7600+129.6177/+29.7589+129.6200/+29.7400+129.6391/+29.7396+129.6400/+29.7200+129.6599/+29.7200+129.6600/+29.7133+129.6800/+29.7000+129.6933/+29.6990+129.7000/+29.6800+129.7190/+29.6796+129.7200/+29.6600+129.7396/+29.6400+129.7397/+29.6203+129.7200/+29.6201+129.7000/+29.6209+129.6800/+29.6400+129.6609/+29.6404+129.6600/+29.6600+129.6404/+29.6603+129.6400/+29.6741+129.6200/+29.6800+129.6141/+29.6848+129.6000/+29.7000+129.5845/+29.7030+129.5800/+29.7200+129.5623/+29.7217+129.5600/+29.7380+129.5400/+29.7400+129.5379/+29.7511+129.5200/+29.7600+129.5106/+29.7677+129.5000/+29.7800+129.4863/+29.7856+129.4800/+29.7912+129.4600/+29.8000+129.4487/+29.8160+129.4400/+29.8200+129.4358/+29.8276+129.4200/+29.8400+129.4058/+29.8460+129.4000/+29.8562+129.3800/+29.8600+129.3751/+29.8800+129.3641/+29.8855+129.3600/+29.8977+129.3400/+29.9000+129.3377/+29.9200+129.3256/+29.9270+129.3200/+29.9400+129.3013/+29.9420+129.3000/+29.9600+129.2823/+29.9625+129.2800/+29.9800+129.2650/+29.9861+129.2600/+30.0000+129.2476/+30.0125+129.2400/+30.0200+129.2344/+30.0385+129.2200/+30.0400+129.2188/+30.0600+129.2091/+30.0730+129.2000/+30.0800+129.1954/+30.0992+129.1800/+30.1000+129.1792/+30.1011+129.1800/ 北西 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6757+129.7000/+29.6600+129.7157/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6812/+29.6600+129.6813/+29.6757+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-21T12:00:00+09:00 2026-08-21T15:00:00+09:00 降灰 70 +30.0618+129.2400/+30.0626+129.2600/+30.0600+129.2646/+30.0482+129.2800/+30.0440+129.3000/+30.0400+129.3049/+30.0298+129.3200/+30.0200+129.3388/+30.0195+129.3400/+30.0068+129.3600/+30.0000+129.3658/+29.9901+129.3800/+29.9800+129.3914/+29.9720+129.4000/+29.9600+129.4126/+29.9555+129.4200/+29.9400+129.4386/+29.9385+129.4400/+29.9200+129.4554/+29.9170+129.4600/+29.9020+129.4800/+29.9000+129.4822/+29.8800+129.4960/+29.8775+129.5000/+29.8697+129.5200/+29.8600+129.5292/+29.8400+129.5341/+29.8351+129.5400/+29.8200+129.5556/+29.8171+129.5600/+29.8000+129.5775/+29.7983+129.5800/+29.7800+129.5992/+29.7795+129.6000/+29.7600+129.6197/+29.7598+129.6200/+29.7473+129.6400/+29.7400+129.6464/+29.7327+129.6600/+29.7200+129.6727/+29.7161+129.6800/+29.7000+129.6959/+29.6991+129.7000/+29.6800+129.7191/+29.6796+129.7200/+29.6600+129.7396/+29.6400+129.7398/+29.6202+129.7200/+29.6201+129.7000/+29.6210+129.6800/+29.6400+129.6610/+29.6405+129.6600/+29.6600+129.6405/+29.6605+129.6400/+29.6797+129.6200/+29.6800+129.6197/+29.6868+129.6000/+29.7000+129.5867/+29.7042+129.5800/+29.7200+129.5636/+29.7224+129.5600/+29.7400+129.5412/+29.7413+129.5400/+29.7585+129.5200/+29.7600+129.5183/+29.7724+129.5000/+29.7800+129.4920/+29.7910+129.4800/+29.7971+129.4600/+29.8000+129.4561/+29.8200+129.4421/+29.8222+129.4400/+29.8337+129.4200/+29.8400+129.4128/+29.8534+129.4000/+29.8600+129.3885/+29.8669+129.3800/+29.8800+129.3725/+29.8955+129.3600/+29.9000+129.3519/+29.9102+129.3400/+29.9200+129.3331/+29.9347+129.3200/+29.9400+129.3139/+29.9600+129.3037/+29.9649+129.3000/+29.9800+129.2832/+29.9836+129.2800/+30.0000+129.2676/+30.0200+129.2634/+30.0255+129.2600/+30.0400+129.2439/+30.0521+129.2400/+30.0600+129.2384/+30.0618+129.2400/ 北西 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6776+129.7000/+29.6600+129.7161/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6812/+29.6600+129.6817/+29.6776+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-21T15:00:00+09:00 2026-08-21T18:00:00+09:00 降灰 70 +30.0466+129.2400/+30.0426+129.2600/+30.0400+129.2626/+30.0274+129.2800/+30.0242+129.3000/+30.0200+129.3060/+30.0081+129.3200/+30.0000+129.3278/+29.9906+129.3400/+29.9803+129.3600/+29.9800+129.3603/+29.9600+129.3789/+29.9591+129.3800/+29.9461+129.4000/+29.9400+129.4114/+29.9330+129.4200/+29.9200+129.4298/+29.9124+129.4400/+29.9000+129.4569/+29.8978+129.4600/+29.8800+129.4783/+29.8792+129.4800/+29.8667+129.5000/+29.8600+129.5103/+29.8400+129.5195/+29.8397+129.5200/+29.8236+129.5400/+29.8200+129.5434/+29.8085+129.5600/+29.8000+129.5692/+29.7926+129.5800/+29.7800+129.5930/+29.7769+129.6000/+29.7600+129.6185/+29.7593+129.6200/+29.7462+129.6400/+29.7400+129.6452/+29.7327+129.6600/+29.7200+129.6718/+29.7155+129.6800/+29.7000+129.6950/+29.6986+129.7000/+29.6800+129.7186/+29.6797+129.7200/+29.6600+129.7396/+29.6400+129.7398/+29.6202+129.7200/+29.6201+129.7000/+29.6205+129.6800/+29.6400+129.6605/+29.6403+129.6600/+29.6521+129.6400/+29.6600+129.6321/+29.6627+129.6200/+29.6800+129.6021/+29.6813+129.6000/+29.6939+129.5800/+29.7000+129.5735/+29.7055+129.5600/+29.7200+129.5434/+29.7222+129.5400/+29.7400+129.5203/+29.7403+129.5200/+29.7542+129.5000/+29.7600+129.4929/+29.7681+129.4800/+29.7800+129.4655/+29.7831+129.4600/+29.7935+129.4400/+29.8000+129.4313/+29.8101+129.4200/+29.8200+129.4111/+29.8291+129.4000/+29.8400+129.3880/+29.8476+129.3800/+29.8600+129.3652/+29.8679+129.3600/+29.8800+129.3473/+29.8865+129.3400/+29.9000+129.3267/+29.9077+129.3200/+29.9200+129.3072/+29.9278+129.3000/+29.9400+129.2853/+29.9492+129.2800/+29.9600+129.2739/+29.9800+129.2643/+29.9857+129.2600/+30.0000+129.2466/+30.0200+129.2439/+30.0280+129.2400/+30.0400+129.2358/+30.0466+129.2400/ 北西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6749+129.7000/+29.6600+129.7147/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6213+129.7000/+29.6400+129.6813/+29.6600+129.6829/+29.6749+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-21T18:00:00+09:00 2026-08-21T21:00:00+09:00 降灰 70 +30.0090+129.2200/+30.0190+129.2400/+30.0139+129.2600/+30.0000+129.2794/+29.9992+129.2800/+29.9882+129.3000/+29.9800+129.3136/+29.9763+129.3200/+29.9657+129.3400/+29.9600+129.3444/+29.9508+129.3600/+29.9400+129.3789/+29.9391+129.3800/+29.9200+129.3948/+29.9167+129.4000/+29.9079+129.4200/+29.9000+129.4276/+29.8805+129.4400/+29.8800+129.4405/+29.8718+129.4600/+29.8600+129.4763/+29.8580+129.4800/+29.8446+129.5000/+29.8400+129.5042/+29.8200+129.5148/+29.8169+129.5200/+29.8000+129.5381/+29.7991+129.5400/+29.7850+129.5600/+29.7800+129.5650/+29.7747+129.5800/+29.7600+129.5955/+29.7584+129.6000/+29.7400+129.6189/+29.7397+129.6200/+29.7347+129.6400/+29.7200+129.6548/+29.7190+129.6600/+29.7000+129.6790/+29.6999+129.6800/+29.6933+129.7000/+29.6800+129.7132/+29.6796+129.7200/+29.6600+129.7396/+29.6400+129.7398/+29.6202+129.7200/+29.6200+129.7000/+29.6203+129.6800/+29.6400+129.6603/+29.6401+129.6600/+29.6431+129.6400/+29.6600+129.6230/+29.6609+129.6200/+29.6750+129.6000/+29.6800+129.5949/+29.6836+129.5800/+29.7000+129.5624/+29.7012+129.5600/+29.7115+129.5400/+29.7200+129.5305/+29.7252+129.5200/+29.7400+129.5036/+29.7425+129.5000/+29.7555+129.4800/+29.7600+129.4746/+29.7682+129.4600/+29.7765+129.4400/+29.7800+129.4342/+29.7888+129.4200/+29.8000+129.4071/+29.8070+129.4000/+29.8200+129.3881/+29.8263+129.3800/+29.8400+129.3625/+29.8425+129.3600/+29.8528+129.3400/+29.8600+129.3315/+29.8760+129.3200/+29.8800+129.3152/+29.8933+129.3000/+29.9000+129.2922/+29.9185+129.2800/+29.9200+129.2788/+29.9400+129.2619/+29.9438+129.2600/+29.9600+129.2491/+29.9729+129.2400/+29.9800+129.2348/+29.9963+129.2200/+30.0000+129.2159/+30.0090+129.2200/ 北西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6729+129.7000/+29.6600+129.7129/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6812/+29.6600+129.6835/+29.6729+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-21T21:00:00+09:00 2026-08-22T00:00:00+09:00 降灰 70 +30.0119+129.2000/+30.0160+129.2200/+30.0164+129.2400/+30.0094+129.2600/+30.0000+129.2706/+29.9909+129.2800/+29.9843+129.3000/+29.9800+129.3088/+29.9736+129.3200/+29.9600+129.3383/+29.9590+129.3400/+29.9447+129.3600/+29.9400+129.3687/+29.9303+129.3800/+29.9200+129.3870/+29.9129+129.4000/+29.9050+129.4200/+29.9000+129.4250/+29.8800+129.4355/+29.8776+129.4400/+29.8697+129.4600/+29.8600+129.4722/+29.8556+129.4800/+29.8400+129.4997/+29.8393+129.5000/+29.8200+129.5083/+29.8132+129.5200/+29.8000+129.5342/+29.7975+129.5400/+29.7800+129.5586/+29.7794+129.5600/+29.7691+129.5800/+29.7600+129.5893/+29.7571+129.6000/+29.7400+129.6173/+29.7393+129.6200/+29.7221+129.6400/+29.7200+129.6421/+29.7182+129.6600/+29.7000+129.6781/+29.6998+129.6800/+29.6887+129.7000/+29.6800+129.7087/+29.6795+129.7200/+29.6600+129.7395/+29.6400+129.7398/+29.6202+129.7200/+29.6200+129.7000/+29.6203+129.6800/+29.6400+129.6603/+29.6401+129.6600/+29.6440+129.6400/+29.6600+129.6240/+29.6610+129.6200/+29.6800+129.6003/+29.6802+129.6000/+29.6857+129.5800/+29.7000+129.5649/+29.7019+129.5600/+29.7200+129.5402/+29.7201+129.5400/+29.7279+129.5200/+29.7400+129.5075/+29.7437+129.5000/+29.7600+129.4820/+29.7615+129.4800/+29.7726+129.4600/+29.7800+129.4402/+29.7800+129.4400/+29.7897+129.4200/+29.8000+129.4079/+29.8087+129.4000/+29.8200+129.3913/+29.8303+129.3800/+29.8400+129.3671/+29.8458+129.3600/+29.8552+129.3400/+29.8600+129.3341/+29.8800+129.3209/+29.8812+129.3200/+29.8939+129.3000/+29.9000+129.2911/+29.9136+129.2800/+29.9200+129.2738/+29.9336+129.2600/+29.9400+129.2525/+29.9582+129.2400/+29.9600+129.2387/+29.9800+129.2270/+29.9870+129.2200/+29.9988+129.2000/+30.0000+129.1986/+30.0119+129.2000/ 北西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6714+129.7000/+29.6600+129.7114/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6812/+29.6600+129.6837/+29.6714+129.7000/ 北西 2 鹿児島県十島村 4630400 　現在、諏訪之瀬島は噴火警戒レベル２（火口周辺規制）です。諏訪之瀬島で噴火が発生した場合には、２１日０９時から１２時までは火口から北西方向、２１日２１時から２４時までは火口から北西方向に降灰が予想されます。 　２１日６時から２１日２４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 　２１日０６時から０９時まで　北西　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　２１日０９時から１２時まで　北西　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　２１日１２時から１５時まで　北西　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　２１日１５時から１８時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　２１日１８時から２１時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　２１日２１時から２４時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　 　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：十島村 　 　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。