2026-08-09T08:00:00Z 通常 気象庁本庁 気象庁 2026-08-09T17:00:00+09:00 2026-08-09T18:00:00+09:00 2026-08-10T12:00:00+09:00 509 発表 1 降灰予報 1.1_0 　現在、口永良部島は噴火警戒レベル２（火口周辺規制）です。口永良部島で噴火が発生した場合には、９日２１時から２４時までは火口から北西方向、１０日０９時から１２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 口永良部島 509 降灰 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 鹿児島県屋久島町 4650500 降灰予報（定時） 06 口永良部島 509 +3026.60+13013.03+657/ 降灰 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 鹿児島県屋久島町 4650500 2026-08-09T18:00:00+09:00 2026-08-09T21:00:00+09:00 降灰 70 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西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4753+130.2000/+30.4600+130.2153/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4222+130.2000/+30.4400+130.1804/+30.4600+130.1809/+30.4753+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-09T21:00:00+09:00 2026-08-10T00:00:00+09:00 降灰 70 +30.7007+129.6000/+30.7000+129.6030/+30.6988+129.6000/+30.7000+129.5959/+30.7007+129.6000/ +30.6778+129.6400/+30.6789+129.6600/+30.6754+129.6800/+30.6737+129.7000/+30.6703+129.7200/+30.6669+129.7400/+30.6600+129.7582/+30.6595+129.7600/+30.6529+129.7800/+30.6420+129.8000/+30.6400+129.8027/+30.6343+129.8200/+30.6292+129.8400/+30.6200+129.8565/+30.6183+129.8600/+30.6111+129.8800/+30.6000+129.8956/+30.5988+129.9000/+30.5948+129.9200/+30.5915+129.9400/+30.5800+129.9524/+30.5757+129.9600/+30.5674+129.9800/+30.5600+129.9897/+30.5583+130.0000/+30.5537+130.0200/+30.5400+130.0372/+30.5395+130.0400/+30.5380+130.0600/+30.5328+130.0800/+30.5200+130.0944/+30.5194+130.1000/+30.5177+130.1200/+30.5000+130.1396/+30.5000+130.1400/+30.4997+130.1600/+30.4987+130.1800/+30.4800+130.1990/+30.4800+130.2000/+30.4798+130.2200/+30.4600+130.2398/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4202+130.1800/+30.4218+130.1600/+30.4400+130.1404/+30.4401+130.1400/+30.4409+130.1200/+30.4437+130.1000/+30.4563+130.0800/+30.4600+130.0757/+30.4620+130.0600/+30.4668+130.0400/+30.4800+130.0217/+30.4804+130.0200/+30.4845+130.0000/+30.4956+129.9800/+30.5000+129.9740/+30.5024+129.9600/+30.5072+129.9400/+30.5198+129.9200/+30.5150+129.9000/+30.5200+129.8912/+30.5261+129.8800/+30.5400+129.8639/+30.5419+129.8600/+30.5469+129.8400/+30.5541+129.8200/+30.5600+129.8087/+30.5647+129.8000/+30.5716+129.7800/+30.5800+129.7614/+30.5807+129.7600/+30.5899+129.7400/+30.6000+129.7227/+30.6041+129.7200/+30.6199+129.7000/+30.6200+129.6998/+30.6270+129.6800/+30.6336+129.6600/+30.6400+129.6448/+30.6461+129.6400/+30.6600+129.6303/+30.6778+129.6400/ 北西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4761+130.2000/+30.4600+130.2161/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4224+130.2000/+30.4400+130.1819/+30.4600+130.1820/+30.4761+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-10T00:00:00+09:00 2026-08-10T03:00:00+09:00 降灰 70 +30.6629+129.6800/+30.6683+129.7000/+30.6650+129.7200/+30.6621+129.7400/+30.6600+129.7463/+30.6572+129.7600/+30.6509+129.7800/+30.6424+129.8000/+30.6400+129.8037/+30.6347+129.8200/+30.6309+129.8400/+30.6247+129.8600/+30.6200+129.8697/+30.6159+129.8800/+30.6029+129.9000/+30.6000+129.9031/+30.5961+129.9200/+30.5923+129.9400/+30.5800+129.9526/+30.5760+129.9600/+30.5711+129.9800/+30.5600+129.9946/+30.5588+130.0000/+30.5546+130.0200/+30.5400+130.0400/+30.5379+130.0600/+30.5332+130.0800/+30.5200+130.0946/+30.5194+130.1000/+30.5178+130.1200/+30.5000+130.1398/+30.5000+130.1400/+30.4996+130.1600/+30.4985+130.1800/+30.4800+130.1988/+30.4800+130.2000/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4217+130.1600/+30.4400+130.1405/+30.4401+130.1400/+30.4410+130.1200/+30.4439+130.1000/+30.4600+130.0808/+30.4602+130.0800/+30.4623+130.0600/+30.4696+130.0400/+30.4800+130.0275/+30.4816+130.0200/+30.4860+130.0000/+30.4950+129.9800/+30.5000+129.9728/+30.5030+129.9600/+30.5105+129.9400/+30.5200+129.9285/+30.5233+129.9200/+30.5211+129.9000/+30.5321+129.8800/+30.5400+129.8713/+30.5448+129.8600/+30.5496+129.8400/+30.5583+129.8200/+30.5600+129.8173/+30.5701+129.8000/+30.5772+129.7800/+30.5800+129.7741/+30.5886+129.7600/+30.6000+129.7435/+30.6043+129.7400/+30.6200+129.7239/+30.6254+129.7200/+30.6315+129.7000/+30.6400+129.6806/+30.6424+129.6800/+30.6600+129.6736/+30.6629+129.6800/ 北西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4755+130.2000/+30.4695+130.2200/+30.4600+130.2295/+30.4400+130.2388/+30.4212+130.2200/+30.4230+130.2000/+30.4400+130.1827/+30.4600+130.1829/+30.4755+130.2000/ 北西 2 鹿児島県屋久島町 4650500 2026-08-10T03:00:00+09:00 2026-08-10T06:00:00+09:00 降灰 70 +30.6468+129.6400/+30.6447+129.6600/+30.6400+129.6750/+30.6373+129.6800/+30.6341+129.7000/+30.6291+129.7200/+30.6284+129.7400/+30.6249+129.7600/+30.6210+129.7800/+30.6200+129.7853/+30.6172+129.8000/+30.6103+129.8200/+30.6000+129.8400/+30.5950+129.8600/+30.5902+129.8800/+30.5841+129.9000/+30.5800+129.9113/+30.5781+129.9200/+30.5676+129.9400/+30.5600+129.9469/+30.5568+129.9600/+30.5542+129.9800/+30.5438+130.0000/+30.5400+130.0055/+30.5380+130.0200/+30.5347+130.0400/+30.5269+130.0600/+30.5200+130.0679/+30.5187+130.0800/+30.5165+130.1000/+30.5036+130.1200/+30.5000+130.1237/+30.4994+130.1400/+30.4988+130.1600/+30.4923+130.1800/+30.4800+130.1925/+30.4800+130.2000/+30.4798+130.2200/+30.4600+130.2398/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4203+130.1600/+30.4208+130.1400/+30.4224+130.1200/+30.4268+130.1000/+30.4382+130.0800/+30.4400+130.0776/+30.4420+130.0600/+30.4454+130.0400/+30.4518+130.0200/+30.4600+130.0073/+30.4618+130.0000/+30.4647+129.9800/+30.4710+129.9600/+30.4800+129.9440/+30.4811+129.9400/+30.4874+129.9200/+30.4891+129.9000/+30.4966+129.8800/+30.5000+129.8722/+30.5052+129.8600/+30.5143+129.8400/+30.5200+129.8287/+30.5234+129.8200/+30.5313+129.8000/+30.5388+129.7800/+30.5400+129.7776/+30.5517+129.7600/+30.5600+129.7462/+30.5648+129.7400/+30.5767+129.7200/+30.5800+129.7086/+30.5830+129.7000/+30.5910+129.6800/+30.6000+129.6621/+30.6141+129.6600/+30.6200+129.6583/+30.6344+129.6400/+30.6400+129.6270/+30.6468+129.6400/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4751+130.2000/+30.4710+130.2200/+30.4600+130.2310/+30.4400+130.2388/+30.4212+130.2200/+30.4231+130.2000/+30.4400+130.1821/+30.4600+130.1828/+30.4751+130.2000/ 北西 2 鹿児島県屋久島町 4650500 2026-08-10T06:00:00+09:00 2026-08-10T09:00:00+09:00 降灰 70 +30.6216+129.6200/+30.6256+129.6400/+30.6262+129.6600/+30.6255+129.6800/+30.6250+129.7000/+30.6205+129.7200/+30.6200+129.7211/+30.6134+129.7400/+30.6056+129.7600/+30.6000+129.7696/+30.5966+129.7800/+30.5921+129.8000/+30.5893+129.8200/+30.5817+129.8400/+30.5800+129.8453/+30.5771+129.8600/+30.5727+129.8800/+30.5687+129.9000/+30.5639+129.9200/+30.5600+129.9238/+30.5470+129.9400/+30.5400+129.9522/+30.5390+129.9600/+30.5362+129.9800/+30.5328+130.0000/+30.5223+130.0200/+30.5200+130.0231/+30.5188+130.0400/+30.5174+130.0600/+30.5128+130.0800/+30.5000+130.0956/+30.4997+130.1000/+30.4992+130.1200/+30.4986+130.1400/+30.4941+130.1600/+30.4800+130.1748/+30.4799+130.1800/+30.4799+130.2000/+30.4797+130.2200/+30.4600+130.2397/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4202+130.1600/+30.4204+130.1400/+30.4213+130.1200/+30.4237+130.1000/+30.4301+130.0800/+30.4400+130.0658/+30.4405+130.0600/+30.4421+130.0400/+30.4438+130.0200/+30.4499+130.0000/+30.4576+129.9800/+30.4600+129.9758/+30.4627+129.9600/+30.4660+129.9400/+30.4730+129.9200/+30.4768+129.9000/+30.4800+129.8953/+30.4831+129.8800/+30.4880+129.8600/+30.4942+129.8400/+30.5000+129.8267/+30.5028+129.8200/+30.5059+129.8000/+30.5140+129.7800/+30.5200+129.7699/+30.5237+129.7600/+30.5300+129.7400/+30.5381+129.7200/+30.5400+129.7114/+30.5454+129.7000/+30.5580+129.6800/+30.5600+129.6769/+30.5698+129.6600/+30.5789+129.6400/+30.5800+129.6375/+30.5885+129.6200/+30.5995+129.6000/+30.6000+129.5991/+30.6027+129.6000/+30.6200+129.6158/+30.6216+129.6200/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4753+130.2000/+30.4600+130.2153/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4227+130.2000/+30.4400+130.1814/+30.4600+130.1819/+30.4753+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-10T09:00:00+09:00 2026-08-10T12:00:00+09:00 降灰 70 +30.6403+129.6200/+30.6438+129.6400/+30.6400+129.6540/+30.6371+129.6400/+30.6399+129.6200/+30.6400+129.6190/+30.6403+129.6200/ +30.6234+129.6800/+30.6265+129.7000/+30.6265+129.7200/+30.6272+129.7400/+30.6232+129.7600/+30.6200+129.7750/+30.6188+129.7800/+30.6137+129.8000/+30.6035+129.8200/+30.6000+129.8246/+30.5961+129.8400/+30.5906+129.8600/+30.5868+129.8800/+30.5800+129.8986/+30.5796+129.9000/+30.5739+129.9200/+30.5600+129.9337/+30.5575+129.9400/+30.5536+129.9600/+30.5434+129.9800/+30.5400+129.9847/+30.5380+130.0000/+30.5358+130.0200/+30.5264+130.0400/+30.5200+130.0482/+30.5191+130.0600/+30.5173+130.0800/+30.5097+130.1000/+30.5000+130.1104/+30.4995+130.1200/+30.4991+130.1400/+30.4973+130.1600/+30.4800+130.1782/+30.4800+130.1800/+30.4800+130.2000/+30.4798+130.2200/+30.4600+130.2398/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4203+130.1600/+30.4211+130.1400/+30.4244+130.1200/+30.4400+130.1006/+30.4401+130.1000/+30.4410+130.0800/+30.4434+130.0600/+30.4478+130.0400/+30.4583+130.0200/+30.4600+130.0176/+30.4631+130.0000/+30.4671+129.9800/+30.4791+129.9600/+30.4800+129.9586/+30.4844+129.9400/+30.4886+129.9200/+30.4894+129.9000/+30.4979+129.8800/+30.5000+129.8761/+30.5070+129.8600/+30.5148+129.8400/+30.5200+129.8290/+30.5234+129.8200/+30.5316+129.8000/+30.5367+129.7800/+30.5400+129.7699/+30.5438+129.7600/+30.5561+129.7400/+30.5600+129.7358/+30.5732+129.7200/+30.5800+129.7067/+30.5845+129.7000/+30.5934+129.6800/+30.6000+129.6680/+30.6200+129.6744/+30.6234+129.6800/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4726+130.2000/+30.4600+130.2126/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4233+130.2000/+30.4400+130.1819/+30.4600+130.1840/+30.4726+130.2000/ 西 2 鹿児島県屋久島町 4650500 　現在、口永良部島は噴火警戒レベル２（火口周辺規制）です。口永良部島で噴火が発生した場合には、９日２１時から２４時までは火口から北西方向、１０日０９時から１２時までは火口から西方向に降灰が予想されます。 　９日１８時から１０日１２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 　０９日１８時から２１時まで　西　　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　０９日２１時から２４時まで　北西　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　１０日００時から０３時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１０日０３時から０６時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１０日０６時から０９時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１０日０９時から１２時まで　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：屋久島町 　 　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。