2026-07-16T08:00:00Z 通常 気象庁本庁 気象庁 2026-07-16T17:00:00+09:00 2026-07-16T18:00:00+09:00 2026-07-17T12:00:00+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、１６日２１時から２４時までは火口から東方向、１７日０９時から１２時までは火口から南東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 2026-07-16T18:00:00+09:00 2026-07-16T21:00:00+09:00 降灰 70 +30.4795+130.2200/+30.4793+130.2400/+30.4743+130.2600/+30.4600+130.2778/+30.4600+130.2800/+30.4599+130.3000/+30.4597+130.3200/+30.4595+130.3400/+30.4593+130.3600/+30.4592+130.3800/+30.4595+130.4000/+30.4600+130.4119/+30.4639+130.4200/+30.4666+130.4400/+30.4630+130.4600/+30.4684+130.4800/+30.4600+130.4950/+30.4586+130.5000/+30.4586+130.5200/+30.4600+130.5310/+30.4638+130.5400/+30.4600+130.5531/+30.4578+130.5600/+30.4489+130.5800/+30.4418+130.6000/+30.4400+130.6056/+30.4357+130.6200/+30.4200+130.6334/+30.4086+130.6200/+30.4060+130.6000/+30.4022+130.5800/+30.4000+130.5785/+30.3800+130.5704/+30.3600+130.5677/+30.3426+130.5600/+30.3400+130.5589/+30.3200+130.5518/+30.3019+130.5400/+30.3000+130.5382/+30.2841+130.5200/+30.2932+130.5000/+30.2971+130.4800/+30.3000+130.4699/+30.3011+130.4600/+30.3200+130.4464/+30.3400+130.4433/+30.3586+130.4400/+30.3600+130.4390/+30.3708+130.4200/+30.3800+130.4090/+30.3816+130.4000/+30.3832+130.3800/+30.3849+130.3600/+30.3886+130.3400/+30.4000+130.3226/+30.4001+130.3200/+30.4002+130.3000/+30.4002+130.2800/+30.4002+130.2600/+30.4006+130.2400/+30.4175+130.2200/+30.4200+130.2175/+30.4400+130.2000/+30.4600+130.2005/+30.4795+130.2200/ +30.4137+130.7000/+30.4196+130.7200/+30.4105+130.7400/+30.4063+130.7600/+30.4000+130.7698/+30.3924+130.7600/+30.3893+130.7400/+30.3849+130.7200/+30.3928+130.7000/+30.4000+130.6866/+30.4137+130.7000/ 東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4512+130.2400/+30.4400+130.2534/+30.4287+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-16T21:00:00+09:00 2026-07-17T00:00:00+09:00 降灰 70 +30.5098+130.5200/+30.5103+130.5400/+30.5083+130.5600/+30.5075+130.5800/+30.5030+130.6000/+30.5000+130.6097/+30.4976+130.6200/+30.4903+130.6400/+30.4819+130.6600/+30.4800+130.6637/+30.4747+130.6600/+30.4600+130.6419/+30.4590+130.6400/+30.4475+130.6200/+30.4470+130.6000/+30.4459+130.5800/+30.4400+130.5652/+30.4374+130.5600/+30.4207+130.5400/+30.4200+130.5395/+30.4056+130.5200/+30.4000+130.5077/+30.3922+130.5200/+30.3800+130.5317/+30.3600+130.5256/+30.3400+130.5345/+30.3200+130.5333/+30.3026+130.5200/+30.3000+130.5154/+30.2877+130.5000/+30.2820+130.4800/+30.2846+130.4600/+30.3000+130.4455/+30.3200+130.4416/+30.3353+130.4400/+30.3400+130.4368/+30.3600+130.4352/+30.3800+130.4251/+30.3932+130.4200/+30.3942+130.4000/+30.4000+130.3865/+30.4004+130.3800/+30.4008+130.3600/+30.4008+130.3400/+30.4008+130.3200/+30.4008+130.3000/+30.4006+130.2800/+30.4008+130.2600/+30.4031+130.2400/+30.4200+130.2223/+30.4200+130.2200/+30.4400+130.2000/+30.4600+130.2002/+30.4798+130.2200/+30.4798+130.2400/+30.4796+130.2600/+30.4792+130.2800/+30.4789+130.3000/+30.4788+130.3200/+30.4787+130.3400/+30.4791+130.3600/+30.4797+130.3800/+30.4800+130.3839/+30.4877+130.4000/+30.4928+130.4200/+30.4965+130.4400/+30.4967+130.4600/+30.4986+130.4800/+30.4999+130.5000/+30.5000+130.5007/+30.5098+130.5200/ 東 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4479+130.2400/+30.4400+130.2492/+30.4321+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-17T00:00:00+09:00 2026-07-17T03:00:00+09:00 降灰 70 +30.5310+130.5200/+30.5303+130.5400/+30.5300+130.5600/+30.5302+130.5800/+30.5286+130.6000/+30.5285+130.6200/+30.5200+130.6355/+30.5176+130.6400/+30.5140+130.6600/+30.5089+130.6800/+30.5029+130.7000/+30.5000+130.7095/+30.4969+130.7200/+30.4800+130.7361/+30.4643+130.7400/+30.4600+130.7584/+30.4550+130.7400/+30.4513+130.7200/+30.4530+130.7000/+30.4539+130.6800/+30.4524+130.6600/+30.4514+130.6400/+30.4503+130.6200/+30.4488+130.6000/+30.4469+130.5800/+30.4472+130.5600/+30.4447+130.5400/+30.4469+130.5200/+30.4442+130.5000/+30.4416+130.4800/+30.4401+130.4600/+30.4400+130.4589/+30.4318+130.4400/+30.4255+130.4200/+30.4230+130.4000/+30.4212+130.3800/+30.4206+130.3600/+30.4201+130.3400/+30.4200+130.3336/+30.4146+130.3200/+30.4117+130.3000/+30.4107+130.2800/+30.4200+130.2626/+30.4200+130.2600/+30.4200+130.2400/+30.4200+130.2200/+30.4400+130.2000/+30.4600+130.2002/+30.4798+130.2200/+30.4799+130.2400/+30.4799+130.2600/+30.4798+130.2800/+30.4798+130.3000/+30.4800+130.3083/+30.4899+130.3200/+30.4962+130.3400/+30.4978+130.3600/+30.4990+130.3800/+30.5000+130.3902/+30.5070+130.4000/+30.5126+130.4200/+30.5150+130.4400/+30.5171+130.4600/+30.5173+130.4800/+30.5197+130.5000/+30.5200+130.5010/+30.5310+130.5200/ +30.3798+130.5400/+30.3615+130.5600/+30.3600+130.5604/+30.3400+130.5676/+30.3200+130.5644/+30.3152+130.5600/+30.3125+130.5400/+30.3200+130.5277/+30.3400+130.5219/+30.3600+130.5316/+30.3798+130.5400/ 東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4514+130.2400/+30.4400+130.2531/+30.4294+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-17T03:00:00+09:00 2026-07-17T06:00:00+09:00 降灰 70 +30.4850+130.5400/+30.4844+130.5600/+30.4853+130.5800/+30.4802+130.6000/+30.4800+130.6007/+30.4757+130.6200/+30.4696+130.6400/+30.4634+130.6600/+30.4600+130.6737/+30.4586+130.6800/+30.4539+130.7000/+30.4490+130.7200/+30.4400+130.7318/+30.4299+130.7400/+30.4237+130.7600/+30.4200+130.7675/+30.4131+130.7800/+30.4000+130.8000/+30.3825+130.7800/+30.3800+130.7731/+30.3770+130.7600/+30.3784+130.7400/+30.3800+130.7332/+30.3822+130.7200/+30.3917+130.7000/+30.4000+130.6885/+30.4093+130.6800/+30.4140+130.6600/+30.4168+130.6400/+30.4200+130.6211/+30.4202+130.6200/+30.4208+130.6000/+30.4200+130.5956/+30.4153+130.5800/+30.4000+130.5747/+30.3800+130.5745/+30.3600+130.5764/+30.3400+130.5771/+30.3200+130.5751/+30.3018+130.5600/+30.3000+130.5544/+30.2904+130.5400/+30.2851+130.5200/+30.2957+130.5000/+30.3000+130.4949/+30.3072+130.4800/+30.3079+130.4600/+30.3200+130.4486/+30.3400+130.4415/+30.3449+130.4400/+30.3600+130.4265/+30.3636+130.4200/+30.3720+130.4000/+30.3800+130.3879/+30.3812+130.3800/+30.3829+130.3600/+30.3845+130.3400/+30.3876+130.3200/+30.4000+130.3026/+30.4001+130.3000/+30.4002+130.2800/+30.4003+130.2600/+30.4008+130.2400/+30.4106+130.2200/+30.4200+130.2106/+30.4400+130.2000/+30.4600+130.2005/+30.4795+130.2200/+30.4796+130.2400/+30.4775+130.2600/+30.4699+130.2800/+30.4600+130.2994/+30.4600+130.3000/+30.4600+130.3200/+30.4600+130.3323/+30.4613+130.3400/+30.4667+130.3600/+30.4706+130.3800/+30.4733+130.4000/+30.4761+130.4200/+30.4769+130.4400/+30.4779+130.4600/+30.4788+130.4800/+30.4791+130.5000/+30.4797+130.5200/+30.4800+130.5234/+30.4850+130.5400/ 東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4512+130.2400/+30.4400+130.2535/+30.4287+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-17T06:00:00+09:00 2026-07-17T09:00:00+09:00 降灰 70 +30.4791+130.2200/+30.4773+130.2400/+30.4600+130.2573/+30.4599+130.2600/+30.4598+130.2800/+30.4593+130.3000/+30.4575+130.3200/+30.4542+130.3400/+30.4497+130.3600/+30.4455+130.3800/+30.4400+130.3963/+30.4398+130.4000/+30.4383+130.4200/+30.4383+130.4400/+30.4323+130.4600/+30.4200+130.4740/+30.4000+130.4755/+30.3800+130.4731/+30.3600+130.4722/+30.3400+130.4721/+30.3200+130.4768/+30.3102+130.4800/+30.3000+130.4942/+30.2954+130.5000/+30.2800+130.5123/+30.2600+130.5153/+30.2400+130.5128/+30.2269+130.5000/+30.2258+130.4800/+30.2294+130.4600/+30.2400+130.4476/+30.2600+130.4422/+30.2654+130.4400/+30.2800+130.4230/+30.2821+130.4200/+30.2876+130.4000/+30.2990+130.3800/+30.3000+130.3785/+30.3127+130.3600/+30.3200+130.3513/+30.3276+130.3600/+30.3400+130.3624/+30.3416+130.3600/+30.3400+130.3495/+30.3294+130.3400/+30.3400+130.3301/+30.3509+130.3200/+30.3600+130.3129/+30.3800+130.3000/+30.3809+130.2800/+30.3986+130.2600/+30.4000+130.2586/+30.4001+130.2400/+30.4012+130.2200/+30.4200+130.2012/+30.4400+130.2000/+30.4600+130.2008/+30.4791+130.2200/ 南東 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4502+130.2400/+30.4400+130.2521/+30.4274+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-17T09:00:00+09:00 2026-07-17T12:00:00+09:00 降灰 70 +30.4792+130.2200/+30.4767+130.2400/+30.4600+130.2568/+30.4599+130.2600/+30.4596+130.2800/+30.4582+130.3000/+30.4519+130.3200/+30.4400+130.3375/+30.4397+130.3400/+30.4382+130.3600/+30.4364+130.3800/+30.4330+130.4000/+30.4200+130.4153/+30.4137+130.4200/+30.4000+130.4335/+30.3800+130.4366/+30.3600+130.4397/+30.3596+130.4400/+30.3400+130.4516/+30.3200+130.4579/+30.3113+130.4600/+30.3000+130.4674/+30.2862+130.4800/+30.2800+130.4893/+30.2663+130.5000/+30.2600+130.5050/+30.2400+130.5185/+30.2354+130.5200/+30.2200+130.5301/+30.2000+130.5235/+30.1984+130.5200/+30.1969+130.5000/+30.2000+130.4833/+30.2007+130.4800/+30.2111+130.4600/+30.2200+130.4464/+30.2255+130.4400/+30.2400+130.4304/+30.2600+130.4206/+30.2608+130.4200/+30.2665+130.4000/+30.2788+130.3800/+30.2800+130.3786/+30.3000+130.3663/+30.3088+130.3600/+30.3200+130.3465/+30.3400+130.3408/+30.3405+130.3400/+30.3471+130.3200/+30.3600+130.3154/+30.3702+130.3000/+30.3800+130.2905/+30.3806+130.2800/+30.3926+130.2600/+30.4000+130.2529/+30.4001+130.2400/+30.4008+130.2200/+30.4200+130.2008/+30.4400+130.2000/+30.4600+130.2007/+30.4792+130.2200/ 南東 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4451+130.2400/+30.4400+130.2461/+30.4328+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 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、１６日２１時から２４時までは火口から東方向、１７日０９時から１２時までは火口から南東方向に降灰が予想されます。 　１６日１８時から１７日１２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 　１６日１８時から２１時まで　東　　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１６日２１時から２４時まで　東　　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１７日００時から０３時まで　東　　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１７日０３時から０６時まで　東　　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１７日０６時から０９時まで　南東　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１７日０９時から１２時まで　南東　　　　　　４０ｋｍ　　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。