2026-08-07T02:00:00Z 通常 気象庁本庁 気象庁 2026-08-07T11:00:00+09:00 2026-08-07T12:00:00+09:00 2026-08-08T06:00:00+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、７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 2026-08-07T12:00:00+09:00 2026-08-07T15:00:00+09:00 降灰 70 +30.5016+129.5000/+30.5042+129.5200/+30.5065+129.5400/+30.5084+129.5600/+30.5100+129.5800/+30.5114+129.6000/+30.5126+129.6200/+30.5137+129.6400/+30.5152+129.6600/+30.5170+129.6800/+30.5191+129.7000/+30.5111+129.7200/+30.5116+129.7400/+30.5121+129.7600/+30.5125+129.7800/+30.5128+129.8000/+30.5093+129.8200/+30.5092+129.8400/+30.5096+129.8600/+30.5106+129.8800/+30.5111+129.9000/+30.5000+129.9111/+30.4956+129.9200/+30.4954+129.9400/+30.4953+129.9600/+30.4940+129.9800/+30.4934+130.0000/+30.4893+130.0200/+30.4838+130.0400/+30.4806+130.0600/+30.4800+130.0653/+30.4800+130.0800/+30.4799+130.1000/+30.4799+130.1200/+30.4799+130.1400/+30.4798+130.1600/+30.4798+130.1800/+30.4796+130.2000/+30.4773+130.2200/+30.4600+130.2373/+30.4400+130.2394/+30.4206+130.2200/+30.4201+130.2000/+30.4201+130.1800/+30.4201+130.1600/+30.4201+130.1400/+30.4201+130.1200/+30.4201+130.1000/+30.4201+130.0800/+30.4201+130.0600/+30.4202+130.0400/+30.4202+130.0200/+30.4203+130.0000/+30.4203+129.9800/+30.4203+129.9600/+30.4204+129.9400/+30.4202+129.9200/+30.4200+129.9170/+30.4065+129.9000/+30.4082+129.8800/+30.4086+129.8600/+30.4094+129.8400/+30.4115+129.8200/+30.4061+129.8000/+30.4065+129.7800/+30.4070+129.7600/+30.4078+129.7400/+30.4088+129.7200/+30.4087+129.7000/+30.4084+129.6800/+30.4091+129.6600/+30.4101+129.6400/+30.4114+129.6200/+30.4130+129.6000/+30.4136+129.5800/+30.4142+129.5600/+30.4151+129.5400/+30.4161+129.5200/+30.4173+129.5000/+30.4185+129.4800/+30.4198+129.4600/+30.4200+129.4578/+30.4217+129.4400/+30.4242+129.4200/+30.4273+129.4000/+30.4286+129.3800/+30.4302+129.3600/+30.4312+129.3400/+30.4316+129.3200/+30.4319+129.3000/+30.4331+129.2800/+30.4345+129.2600/+30.4362+129.2400/+30.4382+129.2200/+30.4400+129.2050/+30.4569+129.2000/+30.4600+129.1993/+30.4601+129.2000/+30.4636+129.2200/+30.4669+129.2400/+30.4696+129.2600/+30.4717+129.2800/+30.4736+129.3000/+30.4751+129.3200/+30.4766+129.3400/+30.4793+129.3600/+30.4800+129.3641/+30.4828+129.3800/+30.4860+129.4000/+30.4898+129.4200/+30.4929+129.4400/+30.4957+129.4600/+30.4987+129.4800/+30.5000+129.4897/+30.5016+129.5000/ 西 100 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4628+130.1400/+30.4701+130.1600/+30.4756+130.1800/+30.4768+130.2000/+30.4600+130.2167/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4237+130.1800/+30.4314+130.1600/+30.4400+130.1406/+30.4426+130.1400/+30.4600+130.1340/+30.4628+130.1400/ 西 8 鹿児島県屋久島町 4650500 2026-08-07T15:00:00+09:00 2026-08-07T18:00:00+09:00 降灰 70 +30.5419+129.3400/+30.5465+129.3600/+30.5507+129.3800/+30.5539+129.4000/+30.5527+129.4200/+30.5517+129.4400/+30.5514+129.4600/+30.5518+129.4800/+30.5521+129.5000/+30.5544+129.5200/+30.5563+129.5400/+30.5562+129.5600/+30.5544+129.5800/+30.5528+129.6000/+30.5523+129.6200/+30.5520+129.6400/+30.5513+129.6600/+30.5505+129.6800/+30.5498+129.7000/+30.5491+129.7200/+30.5488+129.7400/+30.5486+129.7600/+30.5483+129.7800/+30.5479+129.8000/+30.5400+129.8086/+30.5350+129.8200/+30.5343+129.8400/+30.5332+129.8600/+30.5324+129.8800/+30.5314+129.9000/+30.5200+129.9118/+30.5170+129.9200/+30.5161+129.9400/+30.5149+129.9600/+30.5111+129.9800/+30.5000+129.9978/+30.4999+130.0000/+30.4996+130.0200/+30.4996+130.0400/+30.4994+130.0600/+30.4992+130.0800/+30.4977+130.1000/+30.4930+130.1200/+30.4850+130.1400/+30.4800+130.1485/+30.4799+130.1600/+30.4799+130.1800/+30.4798+130.2000/+30.4781+130.2200/+30.4600+130.2381/+30.4400+130.2395/+30.4205+130.2200/+30.4201+130.2000/+30.4201+130.1800/+30.4201+130.1600/+30.4201+130.1400/+30.4202+130.1200/+30.4204+130.1000/+30.4207+130.0800/+30.4213+130.0600/+30.4226+130.0400/+30.4251+130.0200/+30.4284+130.0000/+30.4346+129.9800/+30.4400+129.9686/+30.4403+129.9600/+30.4410+129.9400/+30.4412+129.9200/+30.4400+129.9141/+30.4281+129.9000/+30.4315+129.8800/+30.4361+129.8600/+30.4400+129.8465/+30.4407+129.8400/+30.4426+129.8200/+30.4432+129.8000/+30.4448+129.7800/+30.4461+129.7600/+30.4476+129.7400/+30.4498+129.7200/+30.4516+129.7000/+30.4549+129.6800/+30.4582+129.6600/+30.4600+129.6469/+30.4606+129.6400/+30.4620+129.6200/+30.4636+129.6000/+30.4655+129.5800/+30.4677+129.5600/+30.4697+129.5400/+30.4716+129.5200/+30.4737+129.5000/+30.4755+129.4800/+30.4774+129.4600/+30.4799+129.4400/+30.4800+129.4394/+30.4832+129.4200/+30.4871+129.4000/+30.4916+129.3800/+30.4973+129.3600/+30.5000+129.3487/+30.5200+129.3435/+30.5287+129.3400/+30.5400+129.3311/+30.5419+129.3400/ 西 80 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4682+130.1600/+30.4755+130.1800/+30.4774+130.2000/+30.4600+130.2174/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4251+130.1800/+30.4357+130.1600/+30.4400+130.1529/+30.4600+130.1443/+30.4682+130.1600/ 西 6 鹿児島県屋久島町 4650500 2026-08-07T18:00:00+09:00 2026-08-07T21:00:00+09:00 降灰 70 +30.5621+129.2800/+30.5666+129.3000/+30.5714+129.3200/+30.5750+129.3400/+30.5757+129.3600/+30.5743+129.3800/+30.5730+129.4000/+30.5734+129.4200/+30.5737+129.4400/+30.5750+129.4600/+30.5769+129.4800/+30.5783+129.5000/+30.5786+129.5200/+30.5788+129.5400/+30.5784+129.5600/+30.5774+129.5800/+30.5764+129.6000/+30.5758+129.6200/+30.5751+129.6400/+30.5735+129.6600/+30.5703+129.6800/+30.5663+129.7000/+30.5600+129.7045/+30.5536+129.7200/+30.5531+129.7400/+30.5526+129.7600/+30.5522+129.7800/+30.5518+129.8000/+30.5400+129.8139/+30.5373+129.8200/+30.5365+129.8400/+30.5358+129.8600/+30.5352+129.8800/+30.5345+129.9000/+30.5200+129.9149/+30.5183+129.9200/+30.5174+129.9400/+30.5164+129.9600/+30.5137+129.9800/+30.5145+130.0000/+30.5000+130.0144/+30.4998+130.0200/+30.4998+130.0400/+30.4998+130.0600/+30.4999+130.0800/+30.4992+130.1000/+30.4964+130.1200/+30.4910+130.1400/+30.4800+130.1579/+30.4800+130.1600/+30.4799+130.1800/+30.4798+130.2000/+30.4783+130.2200/+30.4600+130.2383/+30.4400+130.2395/+30.4205+130.2200/+30.4201+130.2000/+30.4201+130.1800/+30.4201+130.1600/+30.4202+130.1400/+30.4203+130.1200/+30.4205+130.1000/+30.4211+130.0800/+30.4220+130.0600/+30.4243+130.0400/+30.4288+130.0200/+30.4346+130.0000/+30.4400+129.9847/+30.4401+129.9800/+30.4405+129.9600/+30.4416+129.9400/+30.4425+129.9200/+30.4400+129.9078/+30.4335+129.9000/+30.4398+129.8800/+30.4400+129.8796/+30.4426+129.8600/+30.4443+129.8400/+30.4465+129.8200/+30.4467+129.8000/+30.4484+129.7800/+30.4507+129.7600/+30.4535+129.7400/+30.4580+129.7200/+30.4600+129.7080/+30.4616+129.7000/+30.4634+129.6800/+30.4656+129.6600/+30.4681+129.6400/+30.4710+129.6200/+30.4750+129.6000/+30.4786+129.5800/+30.4800+129.5733/+30.4832+129.5600/+30.4882+129.5400/+30.4931+129.5200/+30.4995+129.5000/+30.5000+129.4987/+30.5079+129.4800/+30.5163+129.4600/+30.5200+129.4470/+30.5220+129.4400/+30.5251+129.4200/+30.5282+129.4000/+30.5291+129.3800/+30.5299+129.3600/+30.5321+129.3400/+30.5358+129.3200/+30.5400+129.3000/+30.5549+129.2800/+30.5600+129.2726/+30.5621+129.2800/ 西 90 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4662+130.1600/+30.4756+130.1800/+30.4772+130.2000/+30.4600+130.2172/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4255+130.1800/+30.4373+130.1600/+30.4400+130.1552/+30.4600+130.1464/+30.4662+130.1600/ 西 6 鹿児島県屋久島町 4650500 2026-08-07T21:00:00+09:00 2026-08-08T00:00:00+09:00 降灰 70 +30.5814+129.4400/+30.5819+129.4600/+30.5810+129.4800/+30.5802+129.5000/+30.5800+129.5047/+30.5795+129.5200/+30.5789+129.5400/+30.5785+129.5600/+30.5783+129.5800/+30.5781+129.6000/+30.5762+129.6200/+30.5742+129.6400/+30.5723+129.6600/+30.5707+129.6800/+30.5689+129.7000/+30.5600+129.7082/+30.5559+129.7200/+30.5546+129.7400/+30.5534+129.7600/+30.5523+129.7800/+30.5510+129.8000/+30.5400+129.8139/+30.5374+129.8200/+30.5365+129.8400/+30.5361+129.8600/+30.5352+129.8800/+30.5342+129.9000/+30.5200+129.9151/+30.5181+129.9200/+30.5181+129.9400/+30.5171+129.9600/+30.5145+129.9800/+30.5115+130.0000/+30.5000+130.0192/+30.5000+130.0200/+30.4998+130.0400/+30.4996+130.0600/+30.5000+130.0717/+30.5045+130.0800/+30.5000+130.0966/+30.4999+130.1000/+30.4967+130.1200/+30.4916+130.1400/+30.4814+130.1600/+30.4800+130.1617/+30.4799+130.1800/+30.4798+130.2000/+30.4783+130.2200/+30.4600+130.2383/+30.4400+130.2395/+30.4205+130.2200/+30.4201+130.2000/+30.4201+130.1800/+30.4201+130.1600/+30.4201+130.1400/+30.4202+130.1200/+30.4204+130.1000/+30.4207+130.0800/+30.4213+130.0600/+30.4223+130.0400/+30.4242+130.0200/+30.4270+130.0000/+30.4324+129.9800/+30.4378+129.9600/+30.4400+129.9554/+30.4407+129.9400/+30.4412+129.9200/+30.4400+129.9143/+30.4285+129.9000/+30.4316+129.8800/+30.4384+129.8600/+30.4400+129.8536/+30.4413+129.8400/+30.4435+129.8200/+30.4448+129.8000/+30.4467+129.7800/+30.4488+129.7600/+30.4506+129.7400/+30.4529+129.7200/+30.4561+129.7000/+30.4600+129.6829/+30.4606+129.6800/+30.4636+129.6600/+30.4664+129.6400/+30.4687+129.6200/+30.4716+129.6000/+30.4750+129.5800/+30.4795+129.5600/+30.4800+129.5579/+30.4847+129.5400/+30.4905+129.5200/+30.4984+129.5000/+30.5000+129.4941/+30.5038+129.4800/+30.5087+129.4600/+30.5133+129.4400/+30.5186+129.4200/+30.5200+129.4153/+30.5248+129.4000/+30.5286+129.3800/+30.5325+129.3600/+30.5371+129.3400/+30.5400+129.3294/+30.5511+129.3200/+30.5600+129.3105/+30.5643+129.3200/+30.5697+129.3400/+30.5727+129.3600/+30.5744+129.3800/+30.5758+129.4000/+30.5791+129.4200/+30.5800+129.4271/+30.5814+129.4400/ 西 90 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4676+130.1600/+30.4751+130.1800/+30.4775+130.2000/+30.4600+130.2175/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4258+130.1800/+30.4399+130.1600/+30.4400+130.1597/+30.4600+130.1465/+30.4676+130.1600/ 西 6 鹿児島県屋久島町 4650500 2026-08-08T00:00:00+09:00 2026-08-08T03:00:00+09:00 降灰 70 +30.6267+129.4000/+30.6299+129.4200/+30.6311+129.4400/+30.6315+129.4600/+30.6316+129.4800/+30.6317+129.5000/+30.6300+129.5200/+30.6285+129.5400/+30.6269+129.5600/+30.6252+129.5800/+30.6235+129.6000/+30.6212+129.6200/+30.6200+129.6296/+30.6187+129.6400/+30.6149+129.6600/+30.6090+129.6800/+30.6009+129.7000/+30.6000+129.7017/+30.5974+129.7200/+30.5930+129.7400/+30.5916+129.7600/+30.5902+129.7800/+30.5885+129.8000/+30.5860+129.8200/+30.5800+129.8275/+30.5736+129.8400/+30.5710+129.8600/+30.5680+129.8800/+30.5634+129.9000/+30.5600+129.9096/+30.5570+129.9200/+30.5400+129.9330/+30.5386+129.9400/+30.5370+129.9600/+30.5336+129.9800/+30.5221+130.0000/+30.5200+130.0025/+30.5192+130.0200/+30.5187+130.0400/+30.5169+130.0600/+30.5038+130.0800/+30.5000+130.0890/+30.4999+130.1000/+30.4997+130.1200/+30.4988+130.1400/+30.4948+130.1600/+30.4800+130.1771/+30.4800+130.1800/+30.4799+130.2000/+30.4787+130.2200/+30.4600+130.2387/+30.4400+130.2395/+30.4205+130.2200/+30.4201+130.2000/+30.4201+130.1800/+30.4202+130.1600/+30.4204+130.1400/+30.4213+130.1200/+30.4263+130.1000/+30.4400+130.0834/+30.4401+130.0800/+30.4406+130.0600/+30.4413+130.0400/+30.4426+130.0200/+30.4463+130.0000/+30.4555+129.9800/+30.4600+129.9718/+30.4607+129.9600/+30.4622+129.9400/+30.4650+129.9200/+30.4600+129.9020/+30.4581+129.9000/+30.4600+129.8954/+30.4652+129.8800/+30.4742+129.8600/+30.4800+129.8502/+30.4812+129.8400/+30.4836+129.8200/+30.4841+129.8000/+30.4863+129.7800/+30.4897+129.7600/+30.4931+129.7400/+30.4989+129.7200/+30.5000+129.7150/+30.5036+129.7000/+30.5105+129.6800/+30.5143+129.6600/+30.5181+129.6400/+30.5200+129.6295/+30.5220+129.6200/+30.5273+129.6000/+30.5327+129.5800/+30.5400+129.5600/+30.5497+129.5400/+30.5584+129.5200/+30.5600+129.5164/+30.5652+129.5000/+30.5695+129.4800/+30.5742+129.4600/+30.5793+129.4400/+30.5800+129.4373/+30.5851+129.4200/+30.5921+129.4000/+30.5971+129.3800/+30.6000+129.3696/+30.6168+129.3800/+30.6200+129.3841/+30.6267+129.4000/ 西 80 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4663+130.1600/+30.4747+130.1800/+30.4778+130.2000/+30.4600+130.2178/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4277+130.1800/+30.4400+130.1650/+30.4508+130.1600/+30.4600+130.1494/+30.4663+130.1600/ 西 6 鹿児島県屋久島町 4650500 2026-08-08T03:00:00+09:00 2026-08-08T06:00:00+09:00 降灰 70 +30.7058+129.2000/+30.7042+129.2200/+30.7027+129.2400/+30.7011+129.2600/+30.7000+129.2711/+30.6978+129.2600/+30.6957+129.2400/+30.6947+129.2200/+30.6939+129.2000/+30.7000+129.1864/+30.7058+129.2000/ +30.6696+129.3600/+30.6750+129.3800/+30.6778+129.4000/+30.6769+129.4200/+30.6764+129.4400/+30.6749+129.4600/+30.6723+129.4800/+30.6697+129.5000/+30.6658+129.5200/+30.6611+129.5400/+30.6600+129.5438/+30.6540+129.5600/+30.6478+129.5800/+30.6431+129.6000/+30.6400+129.6194/+30.6399+129.6200/+30.6384+129.6400/+30.6369+129.6600/+30.6351+129.6800/+30.6333+129.7000/+30.6310+129.7200/+30.6214+129.7400/+30.6200+129.7431/+30.6148+129.7600/+30.6051+129.7800/+30.6000+129.7862/+30.5979+129.8000/+30.5960+129.8200/+30.5912+129.8400/+30.5841+129.8600/+30.5800+129.8695/+30.5785+129.8800/+30.5765+129.9000/+30.5750+129.9200/+30.5600+129.9339/+30.5557+129.9400/+30.5452+129.9600/+30.5400+129.9668/+30.5392+129.9800/+30.5384+130.0000/+30.5379+130.0200/+30.5400+130.0343/+30.5427+130.0400/+30.5400+130.0469/+30.5272+130.0600/+30.5257+130.0800/+30.5200+130.0904/+30.5172+130.1000/+30.5092+130.1200/+30.5000+130.1336/+30.4998+130.1400/+30.4986+130.1600/+30.4881+130.1800/+30.4800+130.1881/+30.4799+130.2000/+30.4790+130.2200/+30.4600+130.2390/+30.4400+130.2396/+30.4204+130.2200/+30.4201+130.2000/+30.4201+130.1800/+30.4203+130.1600/+30.4221+130.1400/+30.4400+130.1212/+30.4401+130.1200/+30.4404+130.1000/+30.4410+130.0800/+30.4440+130.0600/+30.4600+130.0410/+30.4601+130.0400/+30.4610+130.0200/+30.4625+130.0000/+30.4690+129.9800/+30.4800+129.9648/+30.4805+129.9600/+30.4822+129.9400/+30.4845+129.9200/+30.4835+129.9000/+30.4863+129.8800/+30.4923+129.8600/+30.5000+129.8411/+30.5002+129.8400/+30.5041+129.8200/+30.5016+129.8000/+30.5130+129.7800/+30.5200+129.7733/+30.5237+129.7600/+30.5266+129.7400/+30.5306+129.7200/+30.5277+129.7000/+30.5350+129.6800/+30.5400+129.6705/+30.5452+129.6600/+30.5533+129.6400/+30.5600+129.6222/+30.5606+129.6200/+30.5658+129.6000/+30.5696+129.5800/+30.5742+129.5600/+30.5794+129.5400/+30.5800+129.5379/+30.5861+129.5200/+30.5958+129.5000/+30.6000+129.4909/+30.6070+129.4800/+30.6145+129.4600/+30.6196+129.4400/+30.6200+129.4384/+30.6247+129.4200/+30.6298+129.4000/+30.6351+129.3800/+30.6400+129.3643/+30.6452+129.3600/+30.6600+129.3427/+30.6696+129.3600/ 西 100 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4654+130.1600/+30.4737+130.1800/+30.4775+130.2000/+30.4600+130.2175/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4335+130.1800/+30.4400+130.1735/+30.4550+130.1600/+30.4600+130.1512/+30.4654+130.1600/ 西 6 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、７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。 　７日１２時から８日６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 　０７日１２時から１５時まで　西　　　　　　　１００ｋｍ　８ｋｍ　　　　　 　０７日１５時から１８時まで　西　　　　　　　８０ｋｍ　　６ｋｍ　　　　　 　０７日１８時から２１時まで　西　　　　　　　９０ｋｍ　　６ｋｍ　　　　　 　０７日２１時から２４時まで　西　　　　　　　９０ｋｍ　　６ｋｍ　　　　　 　０８日００時から０３時まで　西　　　　　　　８０ｋｍ　　６ｋｍ　　　　　 　０８日０３時から０６時まで　西　　　　　　　１００ｋｍ　６ｋｍ　　　　　 　 　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。