2026-07-16T14:00:00Z 通常 気象庁本庁 気象庁 2026-07-16T23:00:00+09:00 2026-07-17T00:00:00+09:00 2026-07-17T18:00:00+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、１７日０９時から１２時までは火口から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 2026-07-17T00:00:00+09:00 2026-07-17T03:00:00+09:00 降灰 70 +30.5401+130.6200/+30.5400+130.6212/+30.5380+130.6400/+30.5337+130.6600/+30.5273+130.6800/+30.5203+130.7000/+30.5200+130.7007/+30.5128+130.7200/+30.5103+130.7400/+30.5000+130.7586/+30.4800+130.7578/+30.4600+130.7494/+30.4590+130.7400/+30.4531+130.7200/+30.4520+130.7000/+30.4512+130.6800/+30.4504+130.6600/+30.4498+130.6400/+30.4517+130.6200/+30.4507+130.6000/+30.4490+130.5800/+30.4489+130.5600/+30.4466+130.5400/+30.4512+130.5200/+30.4471+130.5000/+30.4432+130.4800/+30.4414+130.4600/+30.4404+130.4400/+30.4400+130.4346/+30.4321+130.4200/+30.4252+130.4000/+30.4221+130.3800/+30.4209+130.3600/+30.4205+130.3400/+30.4202+130.3200/+30.4201+130.3000/+30.4201+130.2800/+30.4200+130.2600/+30.4200+130.2400/+30.4201+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/+30.4797+130.3200/+30.4800+130.3394/+30.4806+130.3400/+30.4939+130.3600/+30.4976+130.3800/+30.4988+130.4000/+30.4997+130.4200/+30.5000+130.4234/+30.5113+130.4400/+30.5151+130.4600/+30.5166+130.4800/+30.5177+130.5000/+30.5200+130.5060/+30.5314+130.5200/+30.5315+130.5400/+30.5322+130.5600/+30.5335+130.5800/+30.5328+130.6000/+30.5400+130.6199/+30.5401+130.6200/ +30.3899+130.5400/+30.3812+130.5600/+30.3800+130.5606/+30.3600+130.5681/+30.3400+130.5723/+30.3200+130.5689/+30.3115+130.5600/+30.3101+130.5400/+30.3200+130.5240/+30.3329+130.5200/+30.3400+130.5175/+30.3530+130.5200/+30.3600+130.5215/+30.3800+130.5280/+30.3899+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/+30.4519+130.2400/+30.4400+130.2544/+30.4281+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 +30.4795+130.2200/+30.4796+130.2400/+30.4788+130.2600/+30.4763+130.2800/+30.4735+130.3000/+30.4708+130.3200/+30.4705+130.3400/+30.4702+130.3600/+30.4694+130.3800/+30.4719+130.4000/+30.4754+130.4200/+30.4763+130.4400/+30.4762+130.4600/+30.4782+130.4800/+30.4755+130.5000/+30.4758+130.5200/+30.4726+130.5400/+30.4664+130.5600/+30.4600+130.5760/+30.4512+130.5800/+30.4400+130.5922/+30.4331+130.5800/+30.4200+130.5752/+30.4000+130.5711/+30.3800+130.5729/+30.3600+130.5765/+30.3400+130.5771/+30.3200+130.5755/+30.3000+130.5651/+30.2800+130.5631/+30.2726+130.5600/+30.2600+130.5430/+30.2590+130.5400/+30.2595+130.5200/+30.2600+130.5193/+30.2726+130.5000/+30.2800+130.4828/+30.2806+130.4800/+30.2862+130.4600/+30.3000+130.4465/+30.3200+130.4407/+30.3227+130.4400/+30.3400+130.4214/+30.3423+130.4200/+30.3600+130.4032/+30.3619+130.4000/+30.3776+130.3800/+30.3800+130.3774/+30.3821+130.3600/+30.3840+130.3400/+30.3894+130.3200/+30.4000+130.3067/+30.4001+130.3000/+30.4003+130.2800/+30.4004+130.2600/+30.4009+130.2400/+30.4086+130.2200/+30.4200+130.2086/+30.4400+130.2000/+30.4600+130.2005/+30.4795+130.2200/ 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/+30.4521+130.2400/+30.4400+130.2550/+30.4278+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 +30.4844+130.4400/+30.4800+130.4592/+30.4799+130.4600/+30.4800+130.4612/+30.4838+130.4800/+30.4800+130.4996/+30.4600+130.4992/+30.4582+130.5000/+30.4484+130.5200/+30.4400+130.5277/+30.4200+130.5264/+30.4159+130.5200/+30.4050+130.5000/+30.4000+130.4973/+30.3801+130.4800/+30.3800+130.4800/+30.3799+130.4800/+30.3698+130.5000/+30.3600+130.5111/+30.3466+130.5200/+30.3400+130.5263/+30.3200+130.5320/+30.3000+130.5314/+30.2904+130.5400/+30.2800+130.5513/+30.2600+130.5495/+30.2545+130.5400/+30.2481+130.5200/+30.2578+130.5000/+30.2600+130.4961/+30.2659+130.4800/+30.2800+130.4620/+30.2803+130.4600/+30.3000+130.4418/+30.3092+130.4400/+30.3200+130.4267/+30.3334+130.4200/+30.3400+130.4131/+30.3515+130.4000/+30.3600+130.3928/+30.3753+130.3800/+30.3800+130.3759/+30.3822+130.3600/+30.3830+130.3400/+30.3867+130.3200/+30.4000+130.3048/+30.4001+130.3000/+30.4002+130.2800/+30.4003+130.2600/+30.4008+130.2400/+30.4060+130.2200/+30.4200+130.2060/+30.4400+130.2000/+30.4600+130.2003/+30.4797+130.2200/+30.4797+130.2400/+30.4790+130.2600/+30.4773+130.2800/+30.4758+130.3000/+30.4748+130.3200/+30.4746+130.3400/+30.4752+130.3600/+30.4751+130.3800/+30.4764+130.4000/+30.4779+130.4200/+30.4800+130.4327/+30.4844+130.4400/ 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/+30.4481+130.2400/+30.4400+130.2499/+30.4319+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 +30.4797+130.2200/+30.4798+130.2400/+30.4792+130.2600/+30.4778+130.2800/+30.4763+130.3000/+30.4755+130.3200/+30.4742+130.3400/+30.4743+130.3600/+30.4743+130.3800/+30.4748+130.4000/+30.4768+130.4200/+30.4783+130.4400/+30.4763+130.4600/+30.4782+130.4800/+30.4776+130.5000/+30.4600+130.5071/+30.4523+130.5200/+30.4400+130.5334/+30.4200+130.5325/+30.4130+130.5200/+30.4000+130.5007/+30.3988+130.5000/+30.3810+130.4800/+30.3800+130.4798/+30.3765+130.4800/+30.3600+130.4949/+30.3400+130.4941/+30.3200+130.4975/+30.3000+130.4988/+30.2893+130.5000/+30.2800+130.5040/+30.2728+130.5000/+30.2604+130.4800/+30.2600+130.4776/+30.2558+130.4600/+30.2600+130.4536/+30.2800+130.4464/+30.3000+130.4413/+30.3085+130.4400/+30.3200+130.4291/+30.3263+130.4200/+30.3400+130.4027/+30.3421+130.4000/+30.3600+130.3866/+30.3717+130.3800/+30.3800+130.3693/+30.3814+130.3600/+30.3842+130.3400/+30.3907+130.3200/+30.4000+130.3102/+30.4003+130.3000/+30.4003+130.2800/+30.4004+130.2600/+30.4014+130.2400/+30.4086+130.2200/+30.4200+130.2086/+30.4400+130.2000/+30.4600+130.2003/+30.4797+130.2200/ +30.3598+130.3400/+30.3507+130.3600/+30.3400+130.3798/+30.3399+130.3800/+30.3200+130.3982/+30.3166+130.4000/+30.3000+130.4165/+30.2917+130.4200/+30.2800+130.4252/+30.2742+130.4200/+30.2755+130.4000/+30.2800+130.3953/+30.2913+130.3800/+30.3000+130.3731/+30.3157+130.3600/+30.3200+130.3552/+30.3351+130.3400/+30.3400+130.3359/+30.3598+130.3400/ 東 30 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4488+130.2400/+30.4400+130.2502/+30.4311+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 2026-07-17T12:00:00+09:00 2026-07-17T15:00:00+09:00 降灰 70 +30.4865+130.4200/+30.4933+130.4400/+30.4931+130.4600/+30.4947+130.4800/+30.4952+130.5000/+30.4943+130.5200/+30.4948+130.5400/+30.4893+130.5600/+30.4835+130.5800/+30.4800+130.5880/+30.4600+130.5974/+30.4490+130.5800/+30.4400+130.5708/+30.4354+130.5600/+30.4227+130.5400/+30.4200+130.5377/+30.4064+130.5200/+30.4000+130.5020/+30.3918+130.5200/+30.3800+130.5375/+30.3711+130.5400/+30.3600+130.5429/+30.3400+130.5405/+30.3387+130.5400/+30.3200+130.5351/+30.3055+130.5200/+30.3085+130.5000/+30.3200+130.4840/+30.3220+130.4800/+30.3200+130.4792/+30.3000+130.4785/+30.2878+130.4600/+30.3000+130.4480/+30.3200+130.4436/+30.3400+130.4417/+30.3574+130.4400/+30.3600+130.4389/+30.3800+130.4233/+30.3898+130.4200/+30.4000+130.4050/+30.4005+130.4000/+30.4016+130.3800/+30.4013+130.3600/+30.4015+130.3400/+30.4015+130.3200/+30.4015+130.3000/+30.4018+130.2800/+30.4027+130.2600/+30.4114+130.2400/+30.4200+130.2305/+30.4200+130.2200/+30.4374+130.2000/+30.4400+130.1974/+30.4432+130.2000/+30.4600+130.2002/+30.4798+130.2200/+30.4799+130.2400/+30.4797+130.2600/+30.4793+130.2800/+30.4788+130.3000/+30.4785+130.3200/+30.4783+130.3400/+30.4782+130.3600/+30.4787+130.3800/+30.4791+130.4000/+30.4800+130.4096/+30.4865+130.4200/ 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+130.2460/+30.4349+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 2026-07-17T15:00:00+09:00 2026-07-17T18:00:00+09:00 降灰 70 +30.4826+130.4600/+30.4881+130.4800/+30.4914+130.5000/+30.4940+130.5200/+30.4920+130.5400/+30.4870+130.5600/+30.4866+130.5800/+30.4800+130.5962/+30.4772+130.6000/+30.4676+130.6200/+30.4600+130.6290/+30.4419+130.6400/+30.4400+130.6427/+30.4384+130.6400/+30.4337+130.6200/+30.4338+130.6000/+30.4344+130.5800/+30.4293+130.5600/+30.4200+130.5412/+30.4000+130.5585/+30.3957+130.5600/+30.3800+130.5632/+30.3600+130.5651/+30.3488+130.5600/+30.3400+130.5566/+30.3200+130.5487/+30.3089+130.5400/+30.3000+130.5304/+30.2905+130.5200/+30.2954+130.5000/+30.3000+130.4888/+30.3028+130.4800/+30.3000+130.4767/+30.2915+130.4600/+30.3000+130.4522/+30.3200+130.4439/+30.3400+130.4407/+30.3475+130.4400/+30.3600+130.4341/+30.3800+130.4243/+30.3857+130.4200/+30.3871+130.4000/+30.3915+130.3800/+30.3953+130.3600/+30.4000+130.3463/+30.4001+130.3400/+30.4004+130.3200/+30.4006+130.3000/+30.4007+130.2800/+30.4008+130.2600/+30.4022+130.2400/+30.4200+130.2215/+30.4200+130.2200/+30.4318+130.2000/+30.4400+130.1918/+30.4501+130.2000/+30.4600+130.2001/+30.4798+130.2200/+30.4798+130.2400/+30.4788+130.2600/+30.4767+130.2800/+30.4749+130.3000/+30.4728+130.3200/+30.4727+130.3400/+30.4742+130.3600/+30.4749+130.3800/+30.4765+130.4000/+30.4780+130.4200/+30.4790+130.4400/+30.4800+130.4537/+30.4826+130.4600/ +30.4019+130.5200/+30.4000+130.5221/+30.3995+130.5200/+30.4000+130.5161/+30.4019+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/+30.4417+130.2400/+30.4400+130.2421/+30.4383+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、１７日０９時から１２時までは火口から東方向に降灰が予想されます。 　１７日０時から１７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 　１７日００時から０３時まで　東　　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１７日０３時から０６時まで　東　　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１７日０６時から０９時まで　東　　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１７日０９時から１２時まで　東　　　　　　　３０ｋｍ　　２ｋｍ　　　　　 　１７日１２時から１５時まで　東　　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１７日１５時から１８時まで　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。