2026-09-05T05:00:00Z 通常 気象庁本庁 気象庁 2026-09-05T14:00:00+09:00 2026-09-05T15:00:00+09:00 2026-09-06T09:00:00+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、５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 2026-09-05T15:00:00+09:00 2026-09-05T18:00:00+09:00 降灰 70 +30.4639+129.9200/+30.4661+129.9400/+30.4670+129.9600/+30.4681+129.9800/+30.4668+130.0000/+30.4631+130.0200/+30.4657+130.0400/+30.4663+130.0600/+30.4678+130.0800/+30.4679+130.1000/+30.4674+130.1200/+30.4646+130.1400/+30.4648+130.1600/+30.4657+130.1800/+30.4759+130.2000/+30.4770+130.2200/+30.4600+130.2370/+30.4400+130.2397/+30.4200+130.2205/+30.4195+130.2200/+30.4003+130.2000/+30.4001+130.1800/+30.4000+130.1788/+30.3813+130.1600/+30.3803+130.1400/+30.3800+130.1324/+30.3677+130.1200/+30.3611+130.1000/+30.3601+130.0800/+30.3600+130.0792/+30.3435+130.0600/+30.3410+130.0400/+30.3400+130.0337/+30.3281+130.0200/+30.3223+130.0000/+30.3200+129.9814/+30.3188+129.9800/+30.3051+129.9600/+30.3000+129.9422/+30.2972+129.9400/+30.2853+129.9200/+30.2800+129.9066/+30.2768+129.9000/+30.2709+129.8800/+30.2669+129.8600/+30.2600+129.8456/+30.2562+129.8400/+30.2518+129.8200/+30.2482+129.8000/+30.2456+129.7800/+30.2427+129.7600/+30.2400+129.7531/+30.2299+129.7400/+30.2266+129.7200/+30.2234+129.7000/+30.2218+129.6800/+30.2200+129.6602/+30.2200+129.6600/+30.2188+129.6400/+30.2184+129.6200/+30.2179+129.6000/+30.2183+129.5800/+30.2189+129.5600/+30.2200+129.5538/+30.2237+129.5400/+30.2395+129.5200/+30.2400+129.5196/+30.2403+129.5200/+30.2552+129.5400/+30.2600+129.5450/+30.2647+129.5600/+30.2715+129.5800/+30.2781+129.6000/+30.2800+129.6045/+30.2877+129.6200/+30.3000+129.6386/+30.3009+129.6400/+30.3129+129.6600/+30.3200+129.6748/+30.3220+129.6800/+30.3280+129.7000/+30.3307+129.7200/+30.3400+129.7353/+30.3419+129.7400/+30.3475+129.7600/+30.3523+129.7800/+30.3557+129.8000/+30.3580+129.8200/+30.3600+129.8279/+30.3690+129.8400/+30.3782+129.8600/+30.3800+129.8649/+30.3871+129.8800/+30.3939+129.9000/+30.3883+129.9200/+30.3958+129.9400/+30.3989+129.9600/+30.4000+129.9680/+30.4107+129.9800/+30.4179+130.0000/+30.4197+130.0200/+30.4200+130.0262/+30.4220+130.0200/+30.4244+130.0000/+30.4296+129.9800/+30.4324+129.9600/+30.4357+129.9400/+30.4348+129.9200/+30.4400+129.9061/+30.4600+129.9057/+30.4639+129.9200/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4532+130.1800/+30.4588+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4200+130.1824/+30.4176+130.1800/+30.4200+130.1710/+30.4400+130.1600/+30.4532+130.1800/ 南西 4 鹿児島県屋久島町 4650500 2026-09-05T18:00:00+09:00 2026-09-05T21:00:00+09:00 降灰 70 +30.4895+129.8800/+30.4929+129.9000/+30.4963+129.9200/+30.4967+129.9400/+30.4942+129.9600/+30.4927+129.9800/+30.4928+130.0000/+30.4902+130.0200/+30.4892+130.0400/+30.4838+130.0600/+30.4800+130.0670/+30.4786+130.0800/+30.4773+130.1000/+30.4765+130.1200/+30.4758+130.1400/+30.4749+130.1600/+30.4764+130.1800/+30.4786+130.2000/+30.4779+130.2200/+30.4600+130.2379/+30.4400+130.2397/+30.4202+130.2200/+30.4200+130.2193/+30.4007+130.2000/+30.4001+130.1800/+30.4001+130.1600/+30.4000+130.1571/+30.3831+130.1400/+30.3807+130.1200/+30.3803+130.1000/+30.3800+130.0922/+30.3689+130.0800/+30.3625+130.0600/+30.3612+130.0400/+30.3600+130.0224/+30.3579+130.0200/+30.3469+130.0000/+30.3434+129.9800/+30.3409+129.9600/+30.3400+129.9538/+30.3316+129.9400/+30.3209+129.9200/+30.3200+129.9095/+30.3176+129.9000/+30.3136+129.8800/+30.3107+129.8600/+30.3085+129.8400/+30.3000+129.8213/+30.2989+129.8200/+30.2970+129.8000/+30.2956+129.7800/+30.2943+129.7600/+30.2928+129.7400/+30.2874+129.7200/+30.2855+129.7000/+30.2845+129.6800/+30.2835+129.6600/+30.2830+129.6400/+30.2830+129.6200/+30.2830+129.6000/+30.2832+129.5800/+30.2834+129.5600/+30.2848+129.5400/+30.2878+129.5200/+30.2919+129.5000/+30.2975+129.4800/+30.3000+129.4733/+30.3029+129.4800/+30.3108+129.5000/+30.3200+129.5173/+30.3217+129.5200/+30.3360+129.5400/+30.3400+129.5449/+30.3486+129.5600/+30.3588+129.5800/+30.3600+129.5823/+30.3648+129.6000/+30.3704+129.6200/+30.3747+129.6400/+30.3784+129.6600/+30.3800+129.6698/+30.3815+129.6800/+30.3837+129.7000/+30.3873+129.7200/+30.3907+129.7400/+30.3936+129.7600/+30.3968+129.7800/+30.3992+129.8000/+30.4000+129.8031/+30.4064+129.8200/+30.4106+129.8400/+30.4137+129.8600/+30.4163+129.8800/+30.4184+129.9000/+30.4179+129.9200/+30.4193+129.9400/+30.4200+129.9533/+30.4245+129.9600/+30.4368+129.9800/+30.4397+130.0000/+30.4400+130.0137/+30.4406+130.0000/+30.4437+129.9800/+30.4500+129.9600/+30.4600+129.9463/+30.4622+129.9400/+30.4649+129.9200/+30.4639+129.9000/+30.4714+129.8800/+30.4800+129.8667/+30.4895+129.8800/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4529+130.1800/+30.4588+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4249+130.1800/+30.4400+130.1606/+30.4529+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-05T21:00:00+09:00 2026-09-06T00:00:00+09:00 降灰 70 +30.4836+129.9200/+30.4836+129.9400/+30.4800+129.9548/+30.4783+129.9600/+30.4774+129.9800/+30.4751+130.0000/+30.4737+130.0200/+30.4734+130.0400/+30.4733+130.0600/+30.4731+130.0800/+30.4718+130.1000/+30.4714+130.1200/+30.4711+130.1400/+30.4704+130.1600/+30.4736+130.1800/+30.4779+130.2000/+30.4772+130.2200/+30.4600+130.2372/+30.4400+130.2397/+30.4203+130.2200/+30.4200+130.2194/+30.4007+130.2000/+30.4001+130.1800/+30.4001+130.1600/+30.4000+130.1544/+30.3856+130.1400/+30.3808+130.1200/+30.3804+130.1000/+30.3800+130.0833/+30.3768+130.0800/+30.3628+130.0600/+30.3613+130.0400/+30.3603+130.0200/+30.3600+130.0173/+30.3467+130.0000/+30.3428+129.9800/+30.3412+129.9600/+30.3400+129.9490/+30.3334+129.9400/+30.3200+129.9206/+30.3195+129.9200/+30.3109+129.9000/+30.3082+129.8800/+30.3071+129.8600/+30.3048+129.8400/+30.3000+129.8302/+30.2920+129.8200/+30.2893+129.8000/+30.2885+129.7800/+30.2875+129.7600/+30.2864+129.7400/+30.2800+129.7233/+30.2775+129.7200/+30.2773+129.7000/+30.2763+129.6800/+30.2753+129.6600/+30.2750+129.6400/+30.2753+129.6200/+30.2757+129.6000/+30.2771+129.5800/+30.2788+129.5600/+30.2800+129.5512/+30.2818+129.5400/+30.2863+129.5200/+30.2923+129.5000/+30.2912+129.4800/+30.2899+129.4600/+30.2910+129.4400/+30.2954+129.4200/+30.3000+129.4045/+30.3034+129.4200/+30.3078+129.4400/+30.3102+129.4600/+30.3106+129.4800/+30.3111+129.5000/+30.3200+129.5178/+30.3210+129.5200/+30.3295+129.5400/+30.3382+129.5600/+30.3400+129.5635/+30.3466+129.5800/+30.3539+129.6000/+30.3600+129.6125/+30.3624+129.6200/+30.3679+129.6400/+30.3731+129.6600/+30.3778+129.6800/+30.3800+129.6910/+30.3814+129.7000/+30.3853+129.7200/+30.3892+129.7400/+30.3918+129.7600/+30.3941+129.7800/+30.3959+129.8000/+30.3996+129.8200/+30.4000+129.8216/+30.4064+129.8400/+30.4108+129.8600/+30.4142+129.8800/+30.4165+129.9000/+30.4147+129.9200/+30.4176+129.9400/+30.4193+129.9600/+30.4200+129.9691/+30.4299+129.9800/+30.4394+130.0000/+30.4400+130.0027/+30.4409+130.0000/+30.4451+129.9800/+30.4468+129.9600/+30.4501+129.9400/+30.4541+129.9200/+30.4600+129.9110/+30.4800+129.9062/+30.4836+129.9200/ 西 80 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4424+130.1600/+30.4533+130.1800/+30.4588+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4242+130.1800/+30.4352+130.1600/+30.4400+130.1554/+30.4424+130.1600/ 西 5 鹿児島県屋久島町 4650500 2026-09-06T00:00:00+09:00 2026-09-06T03:00:00+09:00 降灰 70 +30.4759+130.2000/+30.4770+130.2200/+30.4600+130.2370/+30.4400+130.2397/+30.4201+130.2200/+30.4200+130.2198/+30.4004+130.2000/+30.4001+130.1800/+30.4000+130.1661/+30.3939+130.1600/+30.3808+130.1400/+30.3803+130.1200/+30.3800+130.1109/+30.3694+130.1000/+30.3616+130.0800/+30.3605+130.0600/+30.3600+130.0535/+30.3481+130.0400/+30.3423+130.0200/+30.3403+130.0000/+30.3400+129.9974/+30.3271+129.9800/+30.3226+129.9600/+30.3200+129.9440/+30.3164+129.9400/+30.3024+129.9200/+30.3000+129.9006/+30.2995+129.9000/+30.2860+129.8800/+30.2800+129.8616/+30.2793+129.8600/+30.2739+129.8400/+30.2624+129.8200/+30.2600+129.8133/+30.2562+129.8000/+30.2517+129.7800/+30.2481+129.7600/+30.2420+129.7400/+30.2400+129.7279/+30.2382+129.7200/+30.2343+129.7000/+30.2304+129.6800/+30.2269+129.6600/+30.2248+129.6400/+30.2238+129.6200/+30.2227+129.6000/+30.2245+129.5800/+30.2271+129.5600/+30.2296+129.5400/+30.2317+129.5200/+30.2366+129.5000/+30.2400+129.4929/+30.2436+129.5000/+30.2600+129.5184/+30.2604+129.5200/+30.2659+129.5400/+30.2728+129.5600/+30.2800+129.5769/+30.2814+129.5800/+30.2903+129.6000/+30.3000+129.6130/+30.3047+129.6200/+30.3144+129.6400/+30.3200+129.6543/+30.3218+129.6600/+30.3278+129.6800/+30.3322+129.7000/+30.3392+129.7200/+30.3400+129.7216/+30.3465+129.7400/+30.3508+129.7600/+30.3551+129.7800/+30.3584+129.8000/+30.3600+129.8155/+30.3617+129.8200/+30.3764+129.8400/+30.3800+129.8491/+30.3853+129.8600/+30.3944+129.8800/+30.3990+129.9000/+30.3960+129.9200/+30.3983+129.9400/+30.4000+129.9562/+30.4061+129.9600/+30.4185+129.9800/+30.4200+129.9945/+30.4211+130.0000/+30.4312+130.0200/+30.4370+130.0400/+30.4400+130.0571/+30.4408+130.0600/+30.4439+130.0800/+30.4502+130.1000/+30.4562+130.1200/+30.4594+130.1400/+30.4599+130.1600/+30.4600+130.1800/+30.4600+130.1836/+30.4759+130.2000/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4516+130.1800/+30.4588+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4231+130.1800/+30.4400+130.1615/+30.4516+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-06T03:00:00+09:00 2026-09-06T06:00:00+09:00 降灰 70 +30.4694+130.2000/+30.4763+130.2200/+30.4600+130.2363/+30.4400+130.2398/+30.4200+130.2338/+30.4062+130.2200/+30.4002+130.2000/+30.4000+130.1867/+30.3933+130.1800/+30.3804+130.1600/+30.3800+130.1402/+30.3798+130.1400/+30.3611+130.1200/+30.3601+130.1000/+30.3600+130.0994/+30.3420+130.0800/+30.3400+130.0604/+30.3396+130.0600/+30.3227+130.0400/+30.3200+130.0236/+30.3165+130.0200/+30.3030+130.0000/+30.3000+129.9850/+30.2956+129.9800/+30.2800+129.9702/+30.2689+129.9600/+30.2628+129.9400/+30.2600+129.9306/+30.2539+129.9200/+30.2459+129.9000/+30.2405+129.8800/+30.2400+129.8786/+30.2200+129.8606/+30.2197+129.8600/+30.2132+129.8400/+30.2075+129.8200/+30.2024+129.8000/+30.2000+129.7937/+30.1845+129.7800/+30.1800+129.7722/+30.1750+129.7600/+30.1706+129.7400/+30.1676+129.7200/+30.1639+129.7000/+30.1600+129.6845/+30.1581+129.6800/+30.1482+129.6600/+30.1400+129.6434/+30.1388+129.6400/+30.1338+129.6200/+30.1291+129.6000/+30.1293+129.5800/+30.1297+129.5600/+30.1321+129.5400/+30.1400+129.5209/+30.1600+129.5371/+30.1610+129.5400/+30.1686+129.5600/+30.1781+129.5800/+30.1800+129.5836/+30.1898+129.6000/+30.2000+129.6088/+30.2084+129.6200/+30.2192+129.6400/+30.2200+129.6416/+30.2286+129.6600/+30.2400+129.6792/+30.2406+129.6800/+30.2551+129.7000/+30.2600+129.7038/+30.2740+129.7200/+30.2762+129.7400/+30.2800+129.7511/+30.2862+129.7600/+30.3000+129.7775/+30.3012+129.7800/+30.3079+129.8000/+30.3157+129.8200/+30.3200+129.8307/+30.3255+129.8400/+30.3343+129.8600/+30.3400+129.8690/+30.3475+129.8800/+30.3549+129.9000/+30.3572+129.9200/+30.3600+129.9356/+30.3635+129.9400/+30.3755+129.9600/+30.3795+129.9800/+30.3800+129.9814/+30.3955+130.0000/+30.3988+130.0200/+30.4000+130.0275/+30.4101+130.0400/+30.4183+130.0600/+30.4199+130.0800/+30.4200+130.0805/+30.4367+130.1000/+30.4396+130.1200/+30.4400+130.1374/+30.4425+130.1400/+30.4595+130.1600/+30.4599+130.1800/+30.4600+130.1906/+30.4694+130.2000/ 南西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4491+130.1800/+30.4588+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4200+130.2053/+30.4147+130.2000/+30.4125+130.1800/+30.4200+130.1671/+30.4400+130.1658/+30.4491+130.1800/ 南西 4 鹿児島県屋久島町 4650500 2026-09-06T06:00:00+09:00 2026-09-06T09:00:00+09:00 降灰 70 +30.4638+130.2000/+30.4765+130.2200/+30.4600+130.2365/+30.4400+130.2398/+30.4200+130.2375/+30.4025+130.2200/+30.4001+130.2000/+30.4000+130.1996/+30.3804+130.1800/+30.3800+130.1760/+30.3640+130.1600/+30.3602+130.1400/+30.3600+130.1391/+30.3414+130.1200/+30.3400+130.1138/+30.3263+130.1000/+30.3202+130.0800/+30.3200+130.0793/+30.3025+130.0600/+30.3000+130.0530/+30.2875+130.0400/+30.2802+130.0200/+30.2800+130.0195/+30.2638+130.0000/+30.2600+129.9960/+30.2433+129.9800/+30.2400+129.9715/+30.2262+129.9600/+30.2200+129.9510/+30.2127+129.9400/+30.2042+129.9200/+30.2000+129.9112/+30.1854+129.9000/+30.1800+129.8925/+30.1744+129.8800/+30.1667+129.8600/+30.1615+129.8400/+30.1600+129.8362/+30.1414+129.8200/+30.1400+129.8179/+30.1281+129.8000/+30.1200+129.7829/+30.1188+129.7800/+30.1109+129.7600/+30.1043+129.7400/+30.1000+129.7298/+30.0934+129.7200/+30.0833+129.7000/+30.0800+129.6841/+30.0791+129.6800/+30.0736+129.6600/+30.0701+129.6400/+30.0689+129.6200/+30.0600+129.6038/+30.0582+129.6000/+30.0600+129.5871/+30.0800+129.5966/+30.1000+129.5976/+30.1016+129.6000/+30.1147+129.6200/+30.1200+129.6276/+30.1293+129.6400/+30.1400+129.6510/+30.1494+129.6600/+30.1600+129.6678/+30.1693+129.6800/+30.1795+129.7000/+30.1800+129.7009/+30.1932+129.7200/+30.2000+129.7283/+30.2127+129.7400/+30.2200+129.7476/+30.2249+129.7600/+30.2323+129.7800/+30.2392+129.8000/+30.2400+129.8008/+30.2600+129.8112/+30.2662+129.8200/+30.2721+129.8400/+30.2779+129.8600/+30.2800+129.8626/+30.2936+129.8800/+30.3000+129.8970/+30.3057+129.9000/+30.3200+129.9152/+30.3224+129.9200/+30.3200+129.9223/+30.3181+129.9400/+30.3200+129.9462/+30.3346+129.9600/+30.3400+129.9730/+30.3567+129.9600/+30.3600+129.9543/+30.3620+129.9600/+30.3652+129.9800/+30.3800+129.9972/+30.3817+130.0000/+30.3891+130.0200/+30.3936+130.0400/+30.4000+130.0473/+30.4092+130.0600/+30.4147+130.0800/+30.4197+130.1000/+30.4200+130.1013/+30.4341+130.1200/+30.4394+130.1400/+30.4400+130.1468/+30.4527+130.1600/+30.4598+130.1800/+30.4600+130.1962/+30.4638+130.2000/ 南西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4507+130.1800/+30.4588+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4200+130.2128/+30.4072+130.2000/+30.4090+130.1800/+30.4200+130.1637/+30.4400+130.1693/+30.4507+130.1800/ 南西 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、５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。 　５日１５時から６日９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 　０５日１５時から１８時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０５日１８時から２１時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０５日２１時から２４時まで　西　　　　　　　８０ｋｍ　　５ｋｍ　　　　　 　０６日００時から０３時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０６日０３時から０６時まで　南西　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０６日０６時から０９時まで　南西　　　　　　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。 　強風のため、遠方まで小さな噴石が流されるおそれがあります。