2026-09-01T20:00:00Z 通常 気象庁本庁 気象庁 2026-09-02T05:00:00+09:00 2026-09-02T06:00:00+09:00 2026-09-03T00:00:00+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、２日０９時から１２時までは火口から西方向、２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 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 2026-09-02T06:00:00+09:00 2026-09-02T09:00:00+09:00 降灰 70 +30.5046+129.9200/+30.5122+129.9400/+30.5145+129.9600/+30.5138+129.9800/+30.5141+130.0000/+30.5139+130.0200/+30.5113+130.0400/+30.5069+130.0600/+30.5033+130.0800/+30.5000+130.0860/+30.4970+130.1000/+30.4953+130.1200/+30.4920+130.1400/+30.4893+130.1600/+30.4806+130.1800/+30.4800+130.1806/+30.4799+130.2000/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2192/+30.4019+130.2000/+30.4011+130.1800/+30.4011+130.1600/+30.4011+130.1400/+30.4008+130.1200/+30.4015+130.1000/+30.4019+130.0800/+30.4014+130.0600/+30.4068+130.0400/+30.4200+130.0237/+30.4238+130.0200/+30.4311+130.0000/+30.4356+129.9800/+30.4400+129.9746/+30.4460+129.9600/+30.4565+129.9400/+30.4600+129.9321/+30.4667+129.9200/+30.4800+129.9080/+30.5000+129.9160/+30.5046+129.9200/ 西 30 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4666+130.2000/+30.4600+130.2078/+30.4591+130.2200/+30.4400+130.2388/+30.4211+130.2200/+30.4237+130.2000/+30.4400+130.1830/+30.4600+130.1923/+30.4666+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-09-02T09:00:00+09:00 2026-09-02T12:00:00+09:00 降灰 70 +30.5217+129.7400/+30.5258+129.7600/+30.5278+129.7800/+30.5294+129.8000/+30.5268+129.8200/+30.5257+129.8400/+30.5236+129.8600/+30.5201+129.8800/+30.5200+129.8807/+30.5176+129.9000/+30.5124+129.9200/+30.5120+129.9400/+30.5105+129.9600/+30.5073+129.9800/+30.5000+129.9932/+30.4991+130.0000/+30.4976+130.0200/+30.4961+130.0400/+30.4941+130.0600/+30.4915+130.0800/+30.4855+130.1000/+30.4800+130.1093/+30.4798+130.1200/+30.4796+130.1400/+30.4797+130.1600/+30.4798+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/+30.4200+130.1968/+30.4052+130.1800/+30.4033+130.1600/+30.4043+130.1400/+30.4085+130.1200/+30.4112+130.1000/+30.4200+130.0846/+30.4203+130.0800/+30.4211+130.0600/+30.4225+130.0400/+30.4257+130.0200/+30.4291+130.0000/+30.4400+129.9811/+30.4402+129.9800/+30.4419+129.9600/+30.4445+129.9400/+30.4481+129.9200/+30.4474+129.9000/+30.4522+129.8800/+30.4578+129.8600/+30.4600+129.8538/+30.4636+129.8400/+30.4693+129.8200/+30.4744+129.8000/+30.4794+129.7800/+30.4800+129.7781/+30.4985+129.7600/+30.5000+129.7582/+30.5149+129.7400/+30.5200+129.7332/+30.5217+129.7400/ 西 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4599+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4231+130.2000/+30.4400+130.1818/+30.4599+130.2000/ 南西 2 鹿児島県屋久島町 4650500 2026-09-02T12:00:00+09:00 2026-09-02T15:00:00+09:00 降灰 70 +30.5003+129.6400/+30.5025+129.6600/+30.5047+129.6800/+30.5047+129.7000/+30.5041+129.7200/+30.5053+129.7400/+30.5062+129.7600/+30.5069+129.7800/+30.5074+129.8000/+30.5057+129.8200/+30.5054+129.8400/+30.5054+129.8600/+30.5030+129.8800/+30.5022+129.9000/+30.5000+129.9024/+30.4949+129.9200/+30.4929+129.9400/+30.4925+129.9600/+30.4908+129.9800/+30.4851+130.0000/+30.4800+130.0136/+30.4797+130.0200/+30.4794+130.0400/+30.4790+130.0600/+30.4789+130.0800/+30.4790+130.1000/+30.4791+130.1200/+30.4793+130.1400/+30.4795+130.1600/+30.4797+130.1800/+30.4799+130.2000/+30.4796+130.2200/+30.4600+130.2396/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2100/+30.4100+130.2000/+30.4012+130.1800/+30.4008+130.1600/+30.4009+130.1400/+30.4011+130.1200/+30.4013+130.1000/+30.4018+130.0800/+30.4024+130.0600/+30.4029+130.0400/+30.4040+130.0200/+30.4047+130.0000/+30.4067+129.9800/+30.4073+129.9600/+30.4100+129.9400/+30.4146+129.9200/+30.4118+129.9000/+30.4169+129.8800/+30.4200+129.8725/+30.4219+129.8600/+30.4230+129.8400/+30.4248+129.8200/+30.4209+129.8000/+30.4244+129.7800/+30.4290+129.7600/+30.4315+129.7400/+30.4346+129.7200/+30.4400+129.7033/+30.4416+129.7000/+30.4503+129.6800/+30.4600+129.6656/+30.4776+129.6600/+30.4800+129.6588/+30.4988+129.6400/+30.5000+129.6373/+30.5003+129.6400/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4639+130.2000/+30.4600+130.2039/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4232+130.2000/+30.4400+130.1815/+30.4600+130.1944/+30.4639+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-09-02T15:00:00+09:00 2026-09-02T18:00:00+09:00 降灰 70 +30.4620+129.5800/+30.4662+129.6000/+30.4671+129.6200/+30.4678+129.6400/+30.4695+129.6600/+30.4717+129.6800/+30.4686+129.7000/+30.4693+129.7200/+30.4711+129.7400/+30.4724+129.7600/+30.4728+129.7800/+30.4731+129.8000/+30.4712+129.8200/+30.4712+129.8400/+30.4711+129.8600/+30.4709+129.8800/+30.4716+129.9000/+30.4614+129.9200/+30.4658+129.9400/+30.4600+129.9586/+30.4599+129.9600/+30.4600+129.9618/+30.4646+129.9800/+30.4662+130.0000/+30.4700+130.0200/+30.4698+130.0400/+30.4703+130.0600/+30.4718+130.0800/+30.4726+130.1000/+30.4743+130.1200/+30.4763+130.1400/+30.4780+130.1600/+30.4794+130.1800/+30.4798+130.2000/+30.4790+130.2200/+30.4600+130.2390/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4012+130.1800/+30.4005+130.1600/+30.4004+130.1400/+30.4005+130.1200/+30.4005+130.1000/+30.4005+130.0800/+30.4003+130.0600/+30.4000+130.0447/+30.3972+130.0400/+30.3913+130.0200/+30.3888+130.0000/+30.3858+129.9800/+30.3846+129.9600/+30.3846+129.9400/+30.3844+129.9200/+30.3800+129.9047/+30.3758+129.9000/+30.3756+129.8800/+30.3754+129.8600/+30.3767+129.8400/+30.3779+129.8200/+30.3737+129.8000/+30.3756+129.7800/+30.3781+129.7600/+30.3800+129.7443/+30.3806+129.7400/+30.3841+129.7200/+30.3849+129.7000/+30.3889+129.6800/+30.3936+129.6600/+30.3986+129.6400/+30.4000+129.6339/+30.4073+129.6200/+30.4158+129.6000/+30.4200+129.5922/+30.4268+129.5800/+30.4382+129.5600/+30.4400+129.5566/+30.4447+129.5600/+30.4600+129.5718/+30.4620+129.5800/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4454+130.1800/+30.4586+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4214+130.2000/+30.4346+130.1800/+30.4400+130.1716/+30.4454+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-02T18:00:00+09:00 2026-09-02T21:00:00+09:00 降灰 70 +30.4627+130.1600/+30.4783+130.1800/+30.4795+130.2000/+30.4783+130.2200/+30.4600+130.2383/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2176/+30.4024+130.2000/+30.4003+130.1800/+30.4002+130.1600/+30.4002+130.1400/+30.4002+130.1200/+30.4000+130.1048/+30.3959+130.1000/+30.3857+130.0800/+30.3831+130.0600/+30.3823+130.0400/+30.3815+130.0200/+30.3811+130.0000/+30.3801+129.9800/+30.3800+129.9776/+30.3744+129.9600/+30.3714+129.9400/+30.3720+129.9200/+30.3634+129.9000/+30.3628+129.8800/+30.3626+129.8600/+30.3628+129.8400/+30.3625+129.8200/+30.3600+129.8025/+30.3584+129.8000/+30.3581+129.7800/+30.3579+129.7600/+30.3575+129.7400/+30.3571+129.7200/+30.3581+129.7000/+30.3600+129.6813/+30.3601+129.6800/+30.3618+129.6600/+30.3635+129.6400/+30.3648+129.6200/+30.3664+129.6000/+30.3692+129.5800/+30.3727+129.5600/+30.3763+129.5400/+30.3797+129.5200/+30.3800+129.5185/+30.3834+129.5000/+30.3909+129.4800/+30.4000+129.4627/+30.4096+129.4800/+30.4181+129.5000/+30.4200+129.5107/+30.4215+129.5200/+30.4245+129.5400/+30.4281+129.5600/+30.4321+129.5800/+30.4354+129.6000/+30.4361+129.6200/+30.4367+129.6400/+30.4374+129.6600/+30.4382+129.6800/+30.4363+129.7000/+30.4375+129.7200/+30.4400+129.7358/+30.4416+129.7400/+30.4478+129.7600/+30.4518+129.7800/+30.4555+129.8000/+30.4513+129.8200/+30.4528+129.8400/+30.4540+129.8600/+30.4558+129.8800/+30.4574+129.9000/+30.4525+129.9200/+30.4536+129.9400/+30.4552+129.9600/+30.4565+129.9800/+30.4576+130.0000/+30.4583+130.0200/+30.4589+130.0400/+30.4593+130.0600/+30.4596+130.0800/+30.4597+130.1000/+30.4599+130.1200/+30.4599+130.1400/+30.4600+130.1561/+30.4627+130.1600/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4492+130.1800/+30.4587+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4213+130.2000/+30.4309+130.1800/+30.4400+130.1669/+30.4492+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-02T21:00:00+09:00 2026-09-03T00:00:00+09:00 降灰 70 +30.4616+129.7600/+30.4634+129.7800/+30.4648+129.8000/+30.4600+129.8086/+30.4565+129.8200/+30.4571+129.8400/+30.4578+129.8600/+30.4592+129.8800/+30.4600+129.8916/+30.4619+129.9000/+30.4600+129.9020/+30.4558+129.9200/+30.4569+129.9400/+30.4574+129.9600/+30.4582+129.9800/+30.4588+130.0000/+30.4592+130.0200/+30.4594+130.0400/+30.4596+130.0600/+30.4597+130.0800/+30.4599+130.1000/+30.4599+130.1200/+30.4600+130.1370/+30.4616+130.1400/+30.4753+130.1600/+30.4790+130.1800/+30.4796+130.2000/+30.4783+130.2200/+30.4600+130.2383/+30.4400+130.2397/+30.4203+130.2200/+30.4200+130.2000/+30.4200+130.1992/+30.4015+130.1800/+30.4005+130.1600/+30.4004+130.1400/+30.4004+130.1200/+30.4004+130.1000/+30.4004+130.0800/+30.4004+130.0600/+30.4003+130.0400/+30.4002+130.0200/+30.4000+130.0115/+30.3934+130.0000/+30.3880+129.9800/+30.3856+129.9600/+30.3849+129.9400/+30.3839+129.9200/+30.3800+129.9079/+30.3723+129.9000/+30.3712+129.8800/+30.3702+129.8600/+30.3693+129.8400/+30.3690+129.8200/+30.3671+129.8000/+30.3670+129.7800/+30.3669+129.7600/+30.3674+129.7400/+30.3680+129.7200/+30.3642+129.7000/+30.3655+129.6800/+30.3671+129.6600/+30.3691+129.6400/+30.3716+129.6200/+30.3749+129.6000/+30.3762+129.5800/+30.3776+129.5600/+30.3790+129.5400/+30.3800+129.5243/+30.3803+129.5200/+30.3818+129.5000/+30.3826+129.4800/+30.3835+129.4600/+30.3870+129.4400/+30.3942+129.4200/+30.4000+129.4069/+30.4069+129.4200/+30.4155+129.4400/+30.4200+129.4593/+30.4202+129.4600/+30.4221+129.4800/+30.4239+129.5000/+30.4257+129.5200/+30.4273+129.5400/+30.4288+129.5600/+30.4303+129.5800/+30.4315+129.6000/+30.4371+129.6200/+30.4400+129.6323/+30.4421+129.6400/+30.4473+129.6600/+30.4518+129.6800/+30.4556+129.7000/+30.4575+129.7200/+30.4597+129.7400/+30.4600+129.7425/+30.4616+129.7600/ 西 80 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4650+130.1800/+30.4721+130.2000/+30.4600+130.2121/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4305+130.1800/+30.4400+130.1650/+30.4600+130.1749/+30.4650+130.1800/ 西 4 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、２日０９時から１２時までは火口から西方向、２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。 　２日６時から２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 　０２日０６時から０９時まで　西　　　　　　　３０ｋｍ　　２ｋｍ　　　　　 　０２日０９時から１２時まで　西　　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　０２日１２時から１５時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　０２日１５時から１８時まで　西　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０２日１８時から２１時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０２日２１時から２４時まで　西　　　　　　　８０ｋｍ　　４ｋｍ　　　　　 　 　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。