2026-10-04T23:00:00Z 通常 気象庁本庁 気象庁 2026-10-05T08:00:00+09:00 2026-10-05T09:00:00+09:00 2026-10-06T03:00:00+09:00 508 発表 1 降灰予報 1.1_0 　現在、薩摩硫黄島は噴火警戒レベル２（火口周辺規制）です。薩摩硫黄島で噴火が発生した場合には、５日０９時から１２時までは火口から南方向、５日２１時から２４時までは火口から南方向に降灰が予想されます。 降灰予報（定時） 06 薩摩硫黄島 508 降灰 70 鹿児島県三島村 4630300 鹿児島県屋久島町 4650500 小さな噴石の落下 75 鹿児島県三島村 4630300 降灰予報（定時） 06 薩摩硫黄島 508 +3047.58+13018.32+704/ 降灰 70 鹿児島県三島村 4630300 鹿児島県屋久島町 4650500 小さな噴石の落下 75 鹿児島県三島村 4630300 2026-10-05T09:00:00+09:00 2026-10-05T12:00:00+09:00 降灰 70 +30.8196+130.3000/+30.8194+130.3200/+30.8000+130.3394/+30.7800+130.3400/+30.7795+130.3400/+30.7600+130.3594/+30.7400+130.3599/+30.7386+130.3600/+30.7200+130.3783/+30.7000+130.3797/+30.6975+130.3800/+30.6800+130.3969/+30.6600+130.3994/+30.6570+130.4000/+30.6400+130.4156/+30.6200+130.4194/+30.6179+130.4200/+30.6000+130.4357/+30.5818+130.4400/+30.5800+130.4416/+30.5600+130.4566/+30.5531+130.4600/+30.5400+130.4773/+30.5355+130.4800/+30.5200+130.4905/+30.5014+130.5000/+30.5000+130.5011/+30.4800+130.5164/+30.4766+130.5200/+30.4667+130.5400/+30.4600+130.5468/+30.4400+130.5573/+30.4326+130.5600/+30.4200+130.5752/+30.4147+130.5800/+30.4000+130.5898/+30.3805+130.5800/+30.3800+130.5796/+30.3625+130.5600/+30.3600+130.5544/+30.3538+130.5400/+30.3493+130.5200/+30.3462+130.5000/+30.3487+130.4800/+30.3521+130.4600/+30.3600+130.4488/+30.3658+130.4400/+30.3800+130.4265/+30.3929+130.4200/+30.4000+130.4175/+30.4200+130.4116/+30.4400+130.4077/+30.4600+130.4052/+30.4763+130.4000/+30.4800+130.3975/+30.5000+130.3817/+30.5027+130.3800/+30.5200+130.3693/+30.5400+130.3690/+30.5600+130.3624/+30.5693+130.3600/+30.5800+130.3529/+30.6000+130.3433/+30.6200+130.3401/+30.6205+130.3400/+30.6400+130.3251/+30.6600+130.3213/+30.6755+130.3200/+30.6800+130.3158/+30.7000+130.3018/+30.7200+130.3003/+30.7250+130.3000/+30.7400+130.2851/+30.7600+130.2802/+30.7800+130.2801/+30.8000+130.2804/+30.8196+130.3000/ 南 50 鹿児島県三島村 4630300 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.8188+130.3000/+30.8000+130.3188/+30.7956+130.3200/+30.7800+130.3356/+30.7600+130.3215/+30.7583+130.3200/+30.7600+130.3188/+30.7612+130.3000/+30.7800+130.2812/+30.8000+130.2812/+30.8188+130.3000/ 南 4 鹿児島県三島村 4630300 2026-10-05T12:00:00+09:00 2026-10-05T15:00:00+09:00 降灰 70 +30.8193+130.3000/+30.8191+130.3200/+30.8000+130.3391/+30.7800+130.3400/+30.7798+130.3400/+30.7600+130.3597/+30.7400+130.3600/+30.7398+130.3600/+30.7200+130.3795/+30.7014+130.3800/+30.7000+130.3814/+30.6800+130.3991/+30.6671+130.4000/+30.6600+130.4070/+30.6400+130.4188/+30.6325+130.4200/+30.6200+130.4322/+30.6000+130.4391/+30.5966+130.4400/+30.5800+130.4555/+30.5600+130.4598/+30.5596+130.4600/+30.5600+130.4732/+30.5612+130.4800/+30.5600+130.4812/+30.5400+130.4923/+30.5200+130.4999/+30.5199+130.5000/+30.5000+130.5145/+30.4903+130.5200/+30.4800+130.5367/+30.4788+130.5400/+30.4600+130.5578/+30.4518+130.5600/+30.4400+130.5719/+30.4359+130.5800/+30.4200+130.5966/+30.4112+130.6000/+30.4000+130.6112/+30.3891+130.6200/+30.3800+130.6254/+30.3600+130.6336/+30.3400+130.6331/+30.3205+130.6200/+30.3200+130.6195/+30.3090+130.6000/+30.3046+130.5800/+30.3019+130.5600/+30.3018+130.5400/+30.3040+130.5200/+30.3078+130.5000/+30.3200+130.4822/+30.3224+130.4800/+30.3400+130.4698/+30.3600+130.4612/+30.3679+130.4600/+30.3800+130.4576/+30.4000+130.4512/+30.4200+130.4449/+30.4400+130.4422/+30.4464+130.4400/+30.4600+130.4298/+30.4800+130.4234/+30.4854+130.4200/+30.5000+130.4088/+30.5200+130.4019/+30.5400+130.4013/+30.5439+130.4000/+30.5600+130.3857/+30.5800+130.3806/+30.5820+130.3800/+30.6000+130.3640/+30.6200+130.3604/+30.6214+130.3600/+30.6400+130.3427/+30.6600+130.3403/+30.6611+130.3400/+30.6800+130.3215/+30.7000+130.3202/+30.7006+130.3200/+30.7200+130.3007/+30.7400+130.3001/+30.7405+130.3000/+30.7600+130.2805/+30.7800+130.2801/+30.8000+130.2807/+30.8193+130.3000/ 南東 60 鹿児島県三島村 4630300 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.7988+130.3000/+30.7976+130.3200/+30.7800+130.3376/+30.7600+130.3291/+30.7492+130.3200/+30.7600+130.3120/+30.7612+130.3000/+30.7800+130.2812/+30.7988+130.3000/ 南 4 鹿児島県三島村 4630300 2026-10-05T15:00:00+09:00 2026-10-05T18:00:00+09:00 降灰 70 +30.8191+130.3000/+30.8187+130.3200/+30.8000+130.3387/+30.7800+130.3399/+30.7793+130.3400/+30.7600+130.3593/+30.7400+130.3599/+30.7361+130.3600/+30.7200+130.3760/+30.7000+130.3796/+30.6837+130.3800/+30.6800+130.3837/+30.6600+130.3986/+30.6400+130.3997/+30.6382+130.4000/+30.6200+130.4166/+30.6000+130.4193/+30.5960+130.4200/+30.5800+130.4343/+30.5600+130.4388/+30.5578+130.4400/+30.5400+130.4572/+30.5239+130.4600/+30.5200+130.4649/+30.5017+130.4800/+30.5000+130.4811/+30.4800+130.4911/+30.4722+130.5000/+30.4600+130.5129/+30.4400+130.5172/+30.4259+130.5200/+30.4200+130.5266/+30.4000+130.5390/+30.3800+130.5397/+30.3600+130.5348/+30.3400+130.5252/+30.3328+130.5200/+30.3200+130.5043/+30.3178+130.5000/+30.3056+130.4800/+30.3000+130.4619/+30.2980+130.4600/+30.2967+130.4400/+30.3000+130.4363/+30.3065+130.4200/+30.3200+130.4090/+30.3400+130.4037/+30.3600+130.4032/+30.3800+130.4032/+30.4000+130.4032/+30.4200+130.4025/+30.4400+130.4019/+30.4600+130.4012/+30.4674+130.4000/+30.4800+130.3904/+30.4915+130.3800/+30.5000+130.3745/+30.5200+130.3660/+30.5400+130.3757/+30.5600+130.3637/+30.5800+130.3607/+30.5845+130.3600/+30.6000+130.3463/+30.6200+130.3411/+30.6400+130.3400/+30.6401+130.3400/+30.6600+130.3215/+30.6800+130.3203/+30.6830+130.3200/+30.7000+130.3031/+30.7200+130.3002/+30.7400+130.3000/+30.7401+130.3000/+30.7600+130.2803/+30.7800+130.2801/+30.8000+130.2809/+30.8191+130.3000/ 南 60 鹿児島県三島村 4630300 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.7988+130.3000/+30.7975+130.3200/+30.7800+130.3375/+30.7600+130.3295/+30.7471+130.3200/+30.7576+130.3000/+30.7600+130.2976/+30.7800+130.2812/+30.7988+130.3000/ 南 4 鹿児島県三島村 4630300 2026-10-05T18:00:00+09:00 2026-10-05T21:00:00+09:00 降灰 70 +30.8192+130.3000/+30.8189+130.3200/+30.8000+130.3389/+30.7800+130.3399/+30.7790+130.3400/+30.7600+130.3589/+30.7400+130.3599/+30.7257+130.3600/+30.7200+130.3657/+30.7000+130.3793/+30.6800+130.3798/+30.6772+130.3800/+30.6600+130.3965/+30.6400+130.3993/+30.6286+130.4000/+30.6200+130.4083/+30.6000+130.4182/+30.5800+130.4200/+30.5798+130.4200/+30.5600+130.4361/+30.5549+130.4400/+30.5400+130.4548/+30.5200+130.4578/+30.5079+130.4600/+30.5000+130.4683/+30.4805+130.4800/+30.4800+130.4802/+30.4623+130.5000/+30.4600+130.5023/+30.4400+130.5099/+30.4200+130.5141/+30.4000+130.5166/+30.3874+130.5200/+30.3800+130.5272/+30.3600+130.5210/+30.3577+130.5200/+30.3400+130.5090/+30.3317+130.5000/+30.3200+130.4939/+30.3079+130.4800/+30.3010+130.4600/+30.3000+130.4422/+30.2994+130.4400/+30.3000+130.4387/+30.3031+130.4200/+30.3200+130.4000/+30.3201+130.4000/+30.3400+130.3881/+30.3600+130.3925/+30.3800+130.3938/+30.4000+130.3953/+30.4200+130.3888/+30.4400+130.3901/+30.4600+130.3877/+30.4800+130.3801/+30.4802+130.3800/+30.5000+130.3690/+30.5200+130.3635/+30.5400+130.3672/+30.5600+130.3619/+30.5792+130.3600/+30.5800+130.3593/+30.6000+130.3430/+30.6200+130.3407/+30.6276+130.3400/+30.6400+130.3282/+30.6600+130.3209/+30.6800+130.3202/+30.6813+130.3200/+30.7000+130.3017/+30.7200+130.3002/+30.7379+130.3000/+30.7400+130.2979/+30.7600+130.2802/+30.7800+130.2801/+30.8000+130.2808/+30.8192+130.3000/ 南 60 鹿児島県三島村 4630300 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.7988+130.3000/+30.7972+130.3200/+30.7800+130.3372/+30.7600+130.3277/+30.7492+130.3200/+30.7600+130.3123/+30.7612+130.3000/+30.7800+130.2812/+30.7988+130.3000/ 南 4 鹿児島県三島村 4630300 2026-10-05T21:00:00+09:00 2026-10-06T00:00:00+09:00 降灰 70 +30.8194+130.3000/+30.8191+130.3200/+30.8000+130.3391/+30.7800+130.3399/+30.7784+130.3400/+30.7600+130.3584/+30.7400+130.3598/+30.7202+130.3600/+30.7200+130.3602/+30.7000+130.3788/+30.6800+130.3797/+30.6755+130.3800/+30.6600+130.3948/+30.6400+130.3988/+30.6233+130.4000/+30.6200+130.4032/+30.6000+130.4167/+30.5800+130.4193/+30.5766+130.4200/+30.5600+130.4340/+30.5514+130.4400/+30.5400+130.4513/+30.5200+130.4550/+30.5000+130.4586/+30.4942+130.4600/+30.4800+130.4721/+30.4696+130.4800/+30.4600+130.4915/+30.4488+130.5000/+30.4400+130.5038/+30.4200+130.5105/+30.4000+130.5142/+30.3822+130.5200/+30.3800+130.5223/+30.3600+130.5210/+30.3566+130.5200/+30.3400+130.5143/+30.3247+130.5000/+30.3200+130.4973/+30.3063+130.4800/+30.3006+130.4600/+30.3003+130.4400/+30.3045+130.4200/+30.3160+130.4000/+30.3200+130.3947/+30.3387+130.3800/+30.3400+130.3793/+30.3600+130.3774/+30.3800+130.3755/+30.4000+130.3740/+30.4200+130.3725/+30.4400+130.3793/+30.4600+130.3748/+30.4800+130.3686/+30.5000+130.3634/+30.5109+130.3600/+30.5200+130.3546/+30.5288+130.3600/+30.5400+130.3613/+30.5489+130.3600/+30.5600+130.3527/+30.5800+130.3440/+30.6000+130.3411/+30.6125+130.3400/+30.6200+130.3336/+30.6400+130.3224/+30.6600+130.3206/+30.6710+130.3200/+30.6800+130.3112/+30.7000+130.3008/+30.7200+130.3002/+30.7250+130.3000/+30.7400+130.2850/+30.7600+130.2802/+30.7800+130.2801/+30.8000+130.2806/+30.8194+130.3000/ 南 60 鹿児島県三島村 4630300 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.8188+130.3000/+30.8000+130.3188/+30.7973+130.3200/+30.7800+130.3373/+30.7600+130.3263/+30.7513+130.3200/+30.7600+130.3137/+30.7612+130.3000/+30.7800+130.2812/+30.8000+130.2812/+30.8188+130.3000/ 南 4 鹿児島県三島村 4630300 2026-10-06T00:00:00+09:00 2026-10-06T03:00:00+09:00 降灰 70 +30.8195+130.3000/+30.8192+130.3200/+30.8000+130.3392/+30.7800+130.3399/+30.7751+130.3400/+30.7600+130.3551/+30.7400+130.3597/+30.7200+130.3599/+30.7173+130.3600/+30.7000+130.3766/+30.6800+130.3794/+30.6641+130.3800/+30.6600+130.3839/+30.6400+130.3975/+30.6200+130.3995/+30.6156+130.4000/+30.6000+130.4126/+30.5800+130.4180/+30.5600+130.4200/+30.5436+130.4400/+30.5400+130.4436/+30.5200+130.4527/+30.5000+130.4565/+30.4800+130.4600/+30.4799+130.4600/+30.4619+130.4800/+30.4600+130.4826/+30.4400+130.4996/+30.4396+130.5000/+30.4200+130.5118/+30.4000+130.5171/+30.3919+130.5200/+30.3800+130.5316/+30.3600+130.5346/+30.3400+130.5328/+30.3200+130.5220/+30.3176+130.5200/+30.3018+130.5000/+30.3000+130.4953/+30.2923+130.4800/+30.2847+130.4600/+30.2865+130.4400/+30.3000+130.4223/+30.3009+130.4200/+30.3200+130.4004/+30.3208+130.4000/+30.3400+130.3862/+30.3600+130.3843/+30.3800+130.3801/+30.3807+130.3800/+30.4000+130.3771/+30.4200+130.3740/+30.4400+130.3795/+30.4600+130.3741/+30.4800+130.3691/+30.5000+130.3631/+30.5087+130.3600/+30.5200+130.3529/+30.5303+130.3600/+30.5400+130.3612/+30.5473+130.3600/+30.5600+130.3505/+30.5800+130.3429/+30.6000+130.3406/+30.6042+130.3400/+30.6200+130.3266/+30.6400+130.3215/+30.6600+130.3203/+30.6628+130.3200/+30.6800+130.3037/+30.7000+130.3005/+30.7200+130.3001/+30.7214+130.3000/+30.7400+130.2815/+30.7600+130.2801/+30.7800+130.2801/+30.8000+130.2805/+30.8195+130.3000/ 南 60 鹿児島県三島村 4630300 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.8188+130.3000/+30.8000+130.3188/+30.7968+130.3200/+30.7800+130.3368/+30.7600+130.3240/+30.7545+130.3200/+30.7600+130.3160/+30.7612+130.3000/+30.7800+130.2812/+30.8000+130.2812/+30.8188+130.3000/ 南 4 鹿児島県三島村 4630300 　現在、薩摩硫黄島は噴火警戒レベル２（火口周辺規制）です。薩摩硫黄島で噴火が発生した場合には、５日０９時から１２時までは火口から南方向、５日２１時から２４時までは火口から南方向に降灰が予想されます。 　５日９時から６日３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０９時から１２時まで　南　　　　　　　５０ｋｍ　　４ｋｍ　　　　　 　０５日１２時から１５時まで　南東　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０５日１５時から１８時まで　南　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０５日１８時から２１時まで　南　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０５日２１時から２４時まで　南　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０６日００時から０３時まで　南　　　　　　　６０ｋｍ　　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：三島村、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。