2026-09-02T14:00:00Z 通常 気象庁本庁 気象庁 2026-09-02T23:00:00+09:00 2026-09-03T00:00:00+09:00 2026-09-03T18:00:00+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、３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 2026-09-03T00:00:00+09:00 2026-09-03T03:00:00+09:00 降灰 70 +30.4802+130.1000/+30.4800+130.1008/+30.4762+130.1000/+30.4800+130.0993/+30.4802+130.1000/ +30.4754+130.1200/+30.4745+130.1400/+30.4763+130.1600/+30.4787+130.1800/+30.4794+130.2000/+30.4782+130.2200/+30.4600+130.2382/+30.4400+130.2397/+30.4203+130.2200/+30.4200+130.2173/+30.4027+130.2000/+30.4003+130.1800/+30.4002+130.1600/+30.4002+130.1400/+30.4001+130.1200/+30.4000+130.1109/+30.3908+130.1000/+30.3839+130.0800/+30.3824+130.0600/+30.3817+130.0400/+30.3811+130.0200/+30.3804+130.0000/+30.3800+129.9800/+30.3800+129.9799/+30.3726+129.9600/+30.3698+129.9400/+30.3687+129.9200/+30.3632+129.9000/+30.3628+129.8800/+30.3623+129.8600/+30.3613+129.8400/+30.3611+129.8200/+30.3600+129.8068/+30.3568+129.8000/+30.3565+129.7800/+30.3562+129.7600/+30.3541+129.7400/+30.3521+129.7200/+30.3506+129.7000/+30.3516+129.6800/+30.3527+129.6600/+30.3540+129.6400/+30.3554+129.6200/+30.3570+129.6000/+30.3592+129.5800/+30.3600+129.5739/+30.3618+129.5600/+30.3649+129.5400/+30.3683+129.5200/+30.3722+129.5000/+30.3728+129.4800/+30.3736+129.4600/+30.3773+129.4400/+30.3800+129.4327/+30.3851+129.4200/+30.3946+129.4000/+30.4000+129.3800/+30.4000+129.3799/+30.4000+129.3800/+30.4034+129.4000/+30.4091+129.4200/+30.4135+129.4400/+30.4157+129.4600/+30.4165+129.4800/+30.4173+129.5000/+30.4200+129.5189/+30.4201+129.5200/+30.4227+129.5400/+30.4257+129.5600/+30.4289+129.5800/+30.4316+129.6000/+30.4346+129.6200/+30.4371+129.6400/+30.4390+129.6600/+30.4400+129.6724/+30.4409+129.6800/+30.4400+129.6860/+30.4390+129.7000/+30.4400+129.7104/+30.4422+129.7200/+30.4494+129.7400/+30.4545+129.7600/+30.4572+129.7800/+30.4597+129.8000/+30.4546+129.8200/+30.4554+129.8400/+30.4556+129.8600/+30.4566+129.8800/+30.4579+129.9000/+30.4531+129.9200/+30.4531+129.9400/+30.4551+129.9600/+30.4562+129.9800/+30.4578+130.0000/+30.4586+130.0200/+30.4591+130.0400/+30.4595+130.0600/+30.4598+130.0800/+30.4600+130.1000/+30.4600+130.1010/+30.4754+130.1200/ 西 80 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4520+130.1800/+30.4588+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4282+130.1800/+30.4400+130.1620/+30.4520+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-03T03:00:00+09:00 2026-09-03T06:00:00+09:00 降灰 70 +30.4872+130.1000/+30.4802+130.1200/+30.4800+130.1212/+30.4794+130.1400/+30.4787+130.1600/+30.4792+130.1800/+30.4795+130.2000/+30.4782+130.2200/+30.4600+130.2382/+30.4400+130.2397/+30.4203+130.2200/+30.4200+130.2155/+30.4045+130.2000/+30.4005+130.1800/+30.4002+130.1600/+30.4002+130.1400/+30.4002+130.1200/+30.4000+130.1069/+30.3938+130.1000/+30.3848+130.0800/+30.3827+130.0600/+30.3818+130.0400/+30.3813+130.0200/+30.3806+130.0000/+30.3800+129.9856/+30.3774+129.9800/+30.3697+129.9600/+30.3659+129.9400/+30.3638+129.9200/+30.3614+129.9000/+30.3609+129.8800/+30.3600+129.8604/+30.3599+129.8600/+30.3548+129.8400/+30.3512+129.8200/+30.3425+129.8000/+30.3429+129.7800/+30.3434+129.7600/+30.3432+129.7400/+30.3430+129.7200/+30.3436+129.7000/+30.3445+129.6800/+30.3456+129.6600/+30.3465+129.6400/+30.3473+129.6200/+30.3483+129.6000/+30.3527+129.5800/+30.3581+129.5600/+30.3600+129.5524/+30.3657+129.5400/+30.3735+129.5200/+30.3800+129.5054/+30.3826+129.5000/+30.3917+129.4800/+30.4000+129.4667/+30.4024+129.4800/+30.4057+129.5000/+30.4091+129.5200/+30.4121+129.5400/+30.4162+129.5600/+30.4200+129.5763/+30.4208+129.5800/+30.4245+129.6000/+30.4304+129.6200/+30.4350+129.6400/+30.4380+129.6600/+30.4396+129.6800/+30.4393+129.7000/+30.4400+129.7131/+30.4407+129.7200/+30.4458+129.7400/+30.4497+129.7600/+30.4543+129.7800/+30.4576+129.8000/+30.4534+129.8200/+30.4553+129.8400/+30.4572+129.8600/+30.4590+129.8800/+30.4600+129.8913/+30.4617+129.9000/+30.4600+129.9022/+30.4563+129.9200/+30.4568+129.9400/+30.4580+129.9600/+30.4583+129.9800/+30.4588+130.0000/+30.4592+130.0200/+30.4596+130.0400/+30.4599+130.0600/+30.4600+130.0769/+30.4615+130.0800/+30.4800+130.0894/+30.4872+130.1000/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4679+130.1800/+30.4738+130.2000/+30.4600+130.2138/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4288+130.1800/+30.4400+130.1627/+30.4600+130.1679/+30.4679+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-03T06:00:00+09:00 2026-09-03T09:00:00+09:00 降灰 70 +30.5128+130.0800/+30.5135+130.1000/+30.5035+130.1200/+30.5000+130.1246/+30.4962+130.1400/+30.4928+130.1600/+30.4800+130.1759/+30.4799+130.1800/+30.4798+130.2000/+30.4789+130.2200/+30.4600+130.2389/+30.4400+130.2397/+30.4203+130.2200/+30.4200+130.2033/+30.4167+130.2000/+30.4012+130.1800/+30.4005+130.1600/+30.4004+130.1400/+30.4004+130.1200/+30.4005+130.1000/+30.4004+130.0800/+30.4000+130.0600/+30.4000+130.0599/+30.3902+130.0400/+30.3877+130.0200/+30.3865+130.0000/+30.3850+129.9800/+30.3849+129.9600/+30.3847+129.9400/+30.3843+129.9200/+30.3800+129.9055/+30.3758+129.9000/+30.3759+129.8800/+30.3766+129.8600/+30.3775+129.8400/+30.3790+129.8200/+30.3757+129.8000/+30.3765+129.7800/+30.3773+129.7600/+30.3800+129.7403/+30.3801+129.7400/+30.3839+129.7200/+30.3848+129.7000/+30.3879+129.6800/+30.3913+129.6600/+30.3950+129.6400/+30.3991+129.6200/+30.4000+129.6160/+30.4067+129.6000/+30.4181+129.5800/+30.4200+129.5767/+30.4295+129.5600/+30.4364+129.5400/+30.4389+129.5200/+30.4400+129.5115/+30.4482+129.5200/+30.4600+129.5326/+30.4607+129.5400/+30.4646+129.5600/+30.4691+129.5800/+30.4724+129.6000/+30.4753+129.6200/+30.4776+129.6400/+30.4800+129.6598/+30.4800+129.6600/+30.4827+129.6800/+30.4877+129.7000/+30.4893+129.7200/+30.4913+129.7400/+30.4931+129.7600/+30.4943+129.7800/+30.4955+129.8000/+30.4878+129.8200/+30.4862+129.8400/+30.4853+129.8600/+30.4856+129.8800/+30.4854+129.9000/+30.4800+129.9086/+30.4787+129.9200/+30.4777+129.9400/+30.4776+129.9600/+30.4780+129.9800/+30.4781+130.0000/+30.4781+130.0200/+30.4782+130.0400/+30.4788+130.0600/+30.4795+130.0800/+30.4800+130.0896/+30.4885+130.0800/+30.5000+130.0703/+30.5128+130.0800/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4684+130.1800/+30.4750+130.2000/+30.4600+130.2150/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4305+130.1800/+30.4400+130.1647/+30.4600+130.1678/+30.4684+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-03T09:00:00+09:00 2026-09-03T12:00:00+09:00 降灰 70 +30.5215+129.5600/+30.5242+129.5800/+30.5261+129.6000/+30.5260+129.6200/+30.5259+129.6400/+30.5273+129.6600/+30.5295+129.6800/+30.5311+129.7000/+30.5338+129.7200/+30.5319+129.7400/+30.5298+129.7600/+30.5265+129.7800/+30.5226+129.8000/+30.5230+129.8200/+30.5210+129.8400/+30.5200+129.8453/+30.5184+129.8600/+30.5171+129.8800/+30.5164+129.9000/+30.5098+129.9200/+30.5053+129.9400/+30.5000+129.9540/+30.4996+129.9600/+30.4991+129.9800/+30.4982+130.0000/+30.4976+130.0200/+30.4971+130.0400/+30.4961+130.0600/+30.4958+130.0800/+30.4996+130.1000/+30.5000+130.1009/+30.5057+130.1200/+30.5000+130.1291/+30.4943+130.1400/+30.4918+130.1600/+30.4800+130.1745/+30.4799+130.1800/+30.4799+130.2000/+30.4793+130.2200/+30.4600+130.2393/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4200+130.1800/+30.4200+130.1788/+30.4051+130.1600/+30.4032+130.1400/+30.4033+130.1200/+30.4038+130.1000/+30.4045+130.0800/+30.4049+130.0600/+30.4062+130.0400/+30.4068+130.0200/+30.4072+130.0000/+30.4090+129.9800/+30.4122+129.9600/+30.4166+129.9400/+30.4138+129.9200/+30.4093+129.9000/+30.4131+129.8800/+30.4199+129.8600/+30.4200+129.8594/+30.4210+129.8400/+30.4223+129.8200/+30.4200+129.8071/+30.4178+129.8000/+30.4200+129.7867/+30.4213+129.7800/+30.4261+129.7600/+30.4317+129.7400/+30.4400+129.7200/+30.4400+129.7198/+30.4433+129.7000/+30.4450+129.6800/+30.4546+129.6600/+30.4600+129.6430/+30.4611+129.6400/+30.4627+129.6200/+30.4645+129.6000/+30.4723+129.5800/+30.4800+129.5604/+30.4801+129.5600/+30.4876+129.5400/+30.4954+129.5200/+30.5000+129.5096/+30.5066+129.5200/+30.5160+129.5400/+30.5200+129.5537/+30.5215+129.5600/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4650+130.1800/+30.4761+130.2000/+30.4600+130.2161/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4215+130.2000/+30.4340+130.1800/+30.4400+130.1703/+30.4600+130.1717/+30.4650+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-03T12:00:00+09:00 2026-09-03T15:00:00+09:00 降灰 70 +30.5252+129.6200/+30.5292+129.6400/+30.5318+129.6600/+30.5336+129.6800/+30.5351+129.7000/+30.5378+129.7200/+30.5351+129.7400/+30.5318+129.7600/+30.5277+129.7800/+30.5224+129.8000/+30.5213+129.8200/+30.5200+129.8357/+30.5198+129.8400/+30.5193+129.8600/+30.5190+129.8800/+30.5179+129.9000/+30.5092+129.9200/+30.5037+129.9400/+30.5020+129.9600/+30.5000+129.9644/+30.4990+129.9800/+30.4984+130.0000/+30.4981+130.0200/+30.4975+130.0400/+30.4968+130.0600/+30.4954+130.0800/+30.4918+130.1000/+30.4811+130.1200/+30.4800+130.1218/+30.4799+130.1400/+30.4799+130.1600/+30.4799+130.1800/+30.4799+130.2000/+30.4794+130.2200/+30.4600+130.2394/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4200+130.1800/+30.4200+130.1789/+30.4053+130.1600/+30.4036+130.1400/+30.4038+130.1200/+30.4042+130.1000/+30.4045+130.0800/+30.4047+130.0600/+30.4059+130.0400/+30.4071+130.0200/+30.4085+130.0000/+30.4102+129.9800/+30.4124+129.9600/+30.4130+129.9400/+30.4131+129.9200/+30.4098+129.9000/+30.4140+129.8800/+30.4200+129.8624/+30.4203+129.8600/+30.4210+129.8400/+30.4222+129.8200/+30.4200+129.8043/+30.4190+129.8000/+30.4200+129.7932/+30.4223+129.7800/+30.4267+129.7600/+30.4282+129.7400/+30.4298+129.7200/+30.4365+129.7000/+30.4400+129.6848/+30.4413+129.6800/+30.4521+129.6600/+30.4600+129.6425/+30.4611+129.6400/+30.4676+129.6200/+30.4764+129.6000/+30.4800+129.5852/+30.4814+129.5800/+30.4872+129.5600/+30.4937+129.5400/+30.4998+129.5200/+30.5000+129.5194/+30.5003+129.5200/+30.5078+129.5400/+30.5131+129.5600/+30.5168+129.5800/+30.5192+129.6000/+30.5200+129.6021/+30.5252+129.6200/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4631+130.1800/+30.4764+130.2000/+30.4600+130.2164/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4215+130.2000/+30.4368+130.1800/+30.4400+130.1753/+30.4600+130.1750/+30.4631+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-03T15:00:00+09:00 2026-09-03T18:00:00+09:00 降灰 70 +30.5223+129.6000/+30.5254+129.6200/+30.5276+129.6400/+30.5288+129.6600/+30.5291+129.6800/+30.5294+129.7000/+30.5287+129.7200/+30.5284+129.7400/+30.5281+129.7600/+30.5234+129.7800/+30.5200+129.7919/+30.5191+129.8000/+30.5200+129.8181/+30.5201+129.8200/+30.5200+129.8216/+30.5191+129.8400/+30.5181+129.8600/+30.5175+129.8800/+30.5172+129.9000/+30.5108+129.9200/+30.5078+129.9400/+30.5015+129.9600/+30.5000+129.9644/+30.4994+129.9800/+30.4987+130.0000/+30.4980+130.0200/+30.4977+130.0400/+30.4972+130.0600/+30.4953+130.0800/+30.4936+130.1000/+30.4869+130.1200/+30.4800+130.1292/+30.4799+130.1400/+30.4799+130.1600/+30.4799+130.1800/+30.4799+130.2000/+30.4794+130.2200/+30.4600+130.2394/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4200+130.1800/+30.4200+130.1735/+30.4093+130.1600/+30.4061+130.1400/+30.4059+130.1200/+30.4058+130.1000/+30.4066+130.0800/+30.4085+130.0600/+30.4109+130.0400/+30.4115+130.0200/+30.4117+130.0000/+30.4153+129.9800/+30.4181+129.9600/+30.4200+129.9540/+30.4211+129.9400/+30.4214+129.9200/+30.4205+129.9000/+30.4213+129.8800/+30.4219+129.8600/+30.4232+129.8400/+30.4249+129.8200/+30.4213+129.8000/+30.4239+129.7800/+30.4272+129.7600/+30.4306+129.7400/+30.4347+129.7200/+30.4400+129.7009/+30.4402+129.7000/+30.4400+129.6976/+30.4379+129.6800/+30.4400+129.6718/+30.4439+129.6600/+30.4506+129.6400/+30.4578+129.6200/+30.4600+129.6144/+30.4664+129.6000/+30.4711+129.5800/+30.4761+129.5600/+30.4800+129.5472/+30.4823+129.5400/+30.4905+129.5200/+30.5000+129.5007/+30.5076+129.5200/+30.5129+129.5400/+30.5166+129.5600/+30.5196+129.5800/+30.5200+129.5828/+30.5223+129.6000/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4648+130.1800/+30.4756+130.2000/+30.4600+130.2156/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4215+130.2000/+30.4352+130.1800/+30.4400+130.1731/+30.4600+130.1730/+30.4648+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、３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。 　３日０時から３日１８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 　０３日００時から０３時まで　西　　　　　　　８０ｋｍ　　４ｋｍ　　　　　 　０３日０３時から０６時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０３日０６時から０９時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０３日０９時から１２時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０３日１２時から１５時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０３日１５時から１８時まで　西　　　　　　　７０ｋｍ　　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。