2026-08-08T20:00:00Z 通常 気象庁本庁 気象庁 2026-08-09T05:00:00+09:00 2026-08-09T06:00:00+09:00 2026-08-10T00:00:00+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０９時から１２時までは火口から北西方向、９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 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 2026-08-09T06:00:00+09:00 2026-08-09T09:00:00+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 +30.4768+130.2000/+30.4600+130.2167/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4221+130.2000/+30.4400+130.1812/+30.4600+130.1808/+30.4768+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-09T09:00:00+09:00 2026-08-09T12:00:00+09:00 降灰 70 +30.7058+129.5200/+30.7103+129.5400/+30.7105+129.5600/+30.7087+129.5800/+30.7072+129.6000/+30.7000+129.6161/+30.6951+129.6200/+30.6865+129.6400/+30.6825+129.6600/+30.6800+129.6726/+30.6788+129.6800/+30.6760+129.7000/+30.6688+129.7200/+30.6600+129.7379/+30.6586+129.7400/+30.6514+129.7600/+30.6400+129.7785/+30.6394+129.7800/+30.6330+129.8000/+30.6297+129.8200/+30.6266+129.8400/+30.6200+129.8514/+30.6147+129.8600/+30.6042+129.8800/+30.6000+129.8854/+30.5972+129.9000/+30.5933+129.9200/+30.5881+129.9400/+30.5800+129.9479/+30.5713+129.9600/+30.5600+129.9780/+30.5596+129.9800/+30.5571+130.0000/+30.5508+130.0200/+30.5400+130.0330/+30.5390+130.0400/+30.5371+130.0600/+30.5283+130.0800/+30.5200+130.0891/+30.5193+130.1000/+30.5174+130.1200/+30.5000+130.1389/+30.4999+130.1400/+30.4997+130.1600/+30.4984+130.1800/+30.4800+130.1989/+30.4800+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/+30.4208+130.1600/+30.4258+130.1400/+30.4400+130.1239/+30.4403+130.1200/+30.4414+130.1000/+30.4447+130.0800/+30.4567+130.0600/+30.4600+130.0551/+30.4617+130.0400/+30.4668+130.0200/+30.4765+130.0000/+30.4800+129.9934/+30.4820+129.9800/+30.4888+129.9600/+30.4985+129.9400/+30.5000+129.9372/+30.5040+129.9200/+30.5042+129.9000/+30.5110+129.8800/+30.5200+129.8606/+30.5202+129.8600/+30.5275+129.8400/+30.5400+129.8234/+30.5415+129.8200/+30.5439+129.8000/+30.5547+129.7800/+30.5600+129.7739/+30.5667+129.7600/+30.5732+129.7400/+30.5800+129.7248/+30.5826+129.7200/+30.5912+129.7000/+30.6000+129.6864/+30.6054+129.6800/+30.6171+129.6600/+30.6200+129.6529/+30.6250+129.6400/+30.6344+129.6200/+30.6400+129.6100/+30.6517+129.6000/+30.6600+129.5902/+30.6738+129.5800/+30.6800+129.5699/+30.6835+129.5600/+30.6895+129.5400/+30.6963+129.5200/+30.7000+129.5081/+30.7058+129.5200/ 北西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4769+130.2000/+30.4600+130.2169/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4220+130.2000/+30.4400+130.1811/+30.4600+130.1803/+30.4769+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-09T12:00:00+09:00 2026-08-09T15:00:00+09:00 降灰 70 +30.7115+129.5400/+30.7174+129.5600/+30.7164+129.5800/+30.7159+129.6000/+30.7110+129.6200/+30.7056+129.6400/+30.7000+129.6527/+30.6956+129.6600/+30.6872+129.6800/+30.6832+129.7000/+30.6800+129.7163/+30.6793+129.7200/+30.6754+129.7400/+30.6693+129.7600/+30.6600+129.7779/+30.6593+129.7800/+30.6498+129.8000/+30.6400+129.8133/+30.6375+129.8200/+30.6317+129.8400/+30.6252+129.8600/+30.6200+129.8738/+30.6184+129.8800/+30.6097+129.9000/+30.6000+129.9092/+30.5972+129.9200/+30.5945+129.9400/+30.5800+129.9546/+30.5771+129.9600/+30.5718+129.9800/+30.5600+129.9958/+30.5593+130.0000/+30.5564+130.0200/+30.5441+130.0400/+30.5400+130.0444/+30.5387+130.0600/+30.5360+130.0800/+30.5200+130.0979/+30.5198+130.1000/+30.5186+130.1200/+30.5064+130.1400/+30.5000+130.1464/+30.4998+130.1600/+30.4991+130.1800/+30.4800+130.1996/+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/+30.4238+130.1600/+30.4400+130.1437/+30.4403+130.1400/+30.4412+130.1200/+30.4472+130.1000/+30.4600+130.0858/+30.4606+130.0800/+30.4629+130.0600/+30.4792+130.0400/+30.4800+130.0391/+30.4819+130.0200/+30.4877+130.0000/+30.5000+129.9840/+30.5009+129.9800/+30.5034+129.9600/+30.5123+129.9400/+30.5200+129.9308/+30.5226+129.9200/+30.5200+129.9048/+30.5162+129.9000/+30.5200+129.8925/+30.5263+129.8800/+30.5400+129.8651/+30.5419+129.8600/+30.5464+129.8400/+30.5537+129.8200/+30.5600+129.8096/+30.5653+129.8000/+30.5700+129.7800/+30.5764+129.7600/+30.5800+129.7497/+30.5847+129.7400/+30.5960+129.7200/+30.6000+129.7139/+30.6108+129.7000/+30.6179+129.6800/+30.6200+129.6742/+30.6251+129.6600/+30.6331+129.6400/+30.6400+129.6281/+30.6504+129.6200/+30.6600+129.6115/+30.6717+129.6000/+30.6800+129.5822/+30.6809+129.5800/+30.6878+129.5600/+30.6952+129.5400/+30.7000+129.5307/+30.7115+129.5400/ 北西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4605+130.1800/+30.4769+130.2000/+30.4600+130.2169/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4221+130.2000/+30.4400+130.1818/+30.4596+130.1800/+30.4600+130.1795/+30.4605+130.1800/ 北西 4 鹿児島県屋久島町 4650500 2026-08-09T15:00:00+09:00 2026-08-09T18:00:00+09:00 降灰 70 +30.6302+129.5800/+30.6333+129.6000/+30.6291+129.6200/+30.6260+129.6400/+30.6237+129.6600/+30.6217+129.6800/+30.6200+129.6981/+30.6198+129.7000/+30.6158+129.7200/+30.6084+129.7400/+30.6000+129.7581/+30.5995+129.7600/+30.5958+129.7800/+30.5930+129.8000/+30.5898+129.8200/+30.5825+129.8400/+30.5800+129.8495/+30.5781+129.8600/+30.5739+129.8800/+30.5699+129.9000/+30.5648+129.9200/+30.5600+129.9248/+30.5516+129.9400/+30.5445+129.9600/+30.5400+129.9676/+30.5382+129.9800/+30.5356+130.0000/+30.5307+130.0200/+30.5214+130.0400/+30.5200+130.0418/+30.5183+130.0600/+30.5158+130.0800/+30.5069+130.1000/+30.5000+130.1081/+30.4994+130.1200/+30.4989+130.1400/+30.4971+130.1600/+30.4800+130.1791/+30.4800+130.1800/+30.4799+130.2000/+30.4796+130.2200/+30.4600+130.2396/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4201+130.1600/+30.4203+130.1400/+30.4208+130.1200/+30.4221+130.1000/+30.4247+130.0800/+30.4292+130.0600/+30.4400+130.0433/+30.4404+130.0400/+30.4414+130.0200/+30.4435+130.0000/+30.4465+129.9800/+30.4535+129.9600/+30.4600+129.9473/+30.4613+129.9400/+30.4643+129.9200/+30.4612+129.9000/+30.4677+129.8800/+30.4787+129.8600/+30.4800+129.8572/+30.4832+129.8400/+30.4876+129.8200/+30.4912+129.8000/+30.4965+129.7800/+30.5000+129.7708/+30.5054+129.7600/+30.5138+129.7400/+30.5200+129.7300/+30.5250+129.7200/+30.5282+129.7000/+30.5360+129.6800/+30.5400+129.6721/+30.5495+129.6600/+30.5600+129.6418/+30.5610+129.6400/+30.5678+129.6200/+30.5728+129.6000/+30.5800+129.5859/+30.5834+129.5800/+30.5971+129.5600/+30.6000+129.5553/+30.6141+129.5600/+30.6200+129.5632/+30.6302+129.5800/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4633+130.1800/+30.4755+130.2000/+30.4600+130.2155/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4219+130.2000/+30.4379+130.1800/+30.4400+130.1773/+30.4600+130.1751/+30.4633+130.1800/ 西 4 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 +30.6642+129.5400/+30.6636+129.5600/+30.6600+129.5753/+30.6571+129.5800/+30.6486+129.6000/+30.6427+129.6200/+30.6400+129.6348/+30.6392+129.6400/+30.6356+129.6600/+30.6320+129.6800/+30.6294+129.7000/+30.6255+129.7200/+30.6200+129.7349/+30.6184+129.7400/+30.6160+129.7600/+30.6102+129.7800/+30.6017+129.8000/+30.6000+129.8028/+30.5960+129.8200/+30.5920+129.8400/+30.5847+129.8600/+30.5800+129.8742/+30.5787+129.8800/+30.5747+129.9000/+30.5709+129.9200/+30.5600+129.9303/+30.5559+129.9400/+30.5522+129.9600/+30.5408+129.9800/+30.5400+129.9810/+30.5376+130.0000/+30.5353+130.0200/+30.5266+130.0400/+30.5200+130.0483/+30.5191+130.0600/+30.5178+130.0800/+30.5113+130.1000/+30.5000+130.1127/+30.4997+130.1200/+30.4993+130.1400/+30.4981+130.1600/+30.4800+130.1796/+30.4800+130.1800/+30.4799+130.2000/+30.4796+130.2200/+30.4600+130.2396/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4202+130.1600/+30.4205+130.1400/+30.4213+130.1200/+30.4236+130.1000/+30.4287+130.0800/+30.4391+130.0600/+30.4400+130.0584/+30.4413+130.0400/+30.4434+130.0200/+30.4467+130.0000/+30.4521+129.9800/+30.4600+129.9641/+30.4609+129.9600/+30.4634+129.9400/+30.4669+129.9200/+30.4673+129.9000/+30.4783+129.8800/+30.4800+129.8776/+30.4845+129.8600/+30.4892+129.8400/+30.4970+129.8200/+30.5000+129.8049/+30.5011+129.8000/+30.5083+129.7800/+30.5200+129.7602/+30.5201+129.7600/+30.5270+129.7400/+30.5354+129.7200/+30.5400+129.7065/+30.5444+129.7000/+30.5566+129.6800/+30.5600+129.6745/+30.5672+129.6600/+30.5749+129.6400/+30.5800+129.6281/+30.5840+129.6200/+30.5963+129.6000/+30.6000+129.5904/+30.6149+129.5800/+30.6200+129.5700/+30.6227+129.5600/+30.6311+129.5400/+30.6400+129.5265/+30.6600+129.5259/+30.6642+129.5400/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4628+130.1800/+30.4753+130.2000/+30.4600+130.2153/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4216+130.2000/+30.4366+130.1800/+30.4400+130.1757/+30.4600+130.1754/+30.4628+130.1800/ 西 4 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 +30.7030+129.5800/+30.7067+129.6000/+30.7019+129.6200/+30.7000+129.6279/+30.6939+129.6200/+30.6913+129.6000/+30.6972+129.5800/+30.7000+129.5695/+30.7030+129.5800/ +30.6804+129.6400/+30.6818+129.6600/+30.6800+129.6691/+30.6788+129.6800/+30.6776+129.7000/+30.6736+129.7200/+30.6698+129.7400/+30.6628+129.7600/+30.6600+129.7659/+30.6557+129.7800/+30.6464+129.8000/+30.6400+129.8086/+30.6361+129.8200/+30.6310+129.8400/+30.6230+129.8600/+30.6200+129.8668/+30.6158+129.8800/+30.6032+129.9000/+30.6000+129.9030/+30.5960+129.9200/+30.5927+129.9400/+30.5800+129.9527/+30.5763+129.9600/+30.5696+129.9800/+30.5600+129.9915/+30.5584+130.0000/+30.5548+130.0200/+30.5401+130.0400/+30.5400+130.0401/+30.5382+130.0600/+30.5341+130.0800/+30.5200+130.0955/+30.5195+130.1000/+30.5182+130.1200/+30.5000+130.1397/+30.5000+130.1400/+30.4997+130.1600/+30.4988+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/+30.4239+130.1600/+30.4400+130.1438/+30.4403+130.1400/+30.4413+130.1200/+30.4487+130.1000/+30.4600+130.0874/+30.4608+130.0800/+30.4634+130.0600/+30.4800+130.0405/+30.4801+130.0400/+30.4822+130.0200/+30.4878+130.0000/+30.5000+129.9831/+30.5006+129.9800/+30.5041+129.9600/+30.5159+129.9400/+30.5200+129.9348/+30.5234+129.9200/+30.5202+129.9000/+30.5298+129.8800/+30.5400+129.8684/+30.5431+129.8600/+30.5488+129.8400/+30.5580+129.8200/+30.5600+129.8165/+30.5674+129.8000/+30.5730+129.7800/+30.5800+129.7638/+30.5822+129.7600/+30.5918+129.7400/+30.6000+129.7254/+30.6060+129.7200/+30.6187+129.7000/+30.6200+129.6968/+30.6267+129.6800/+30.6351+129.6600/+30.6400+129.6503/+30.6538+129.6400/+30.6600+129.6356/+30.6800+129.6397/+30.6804+129.6400/ 北西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4757+130.2000/+30.4600+130.2157/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4220+130.2000/+30.4400+130.1818/+30.4600+130.1814/+30.4757+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０９時から１２時までは火口から北西方向、９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。 　９日６時から９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 　０９日０６時から０９時まで　西　　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　０９日０９時から１２時まで　北西　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　０９日１２時から１５時まで　北西　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０９日１５時から１８時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０９日１８時から２１時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０９日２１時から２４時まで　北西　　　　　　７０ｋｍ　　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。