2026-08-08T14:00:00Z 通常 気象庁本庁 気象庁 2026-08-08T23:00:00+09:00 2026-08-09T00:00:00+09:00 2026-08-09T18:00:00+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、９日０９時から１２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 2026-08-09T00:00:00+09:00 2026-08-09T03:00:00+09:00 降灰 70 +30.6470+129.4800/+30.6573+129.5000/+30.6486+129.5200/+30.6444+129.5400/+30.6400+129.5590/+30.6391+129.5600/+30.6314+129.5800/+30.6300+129.6000/+30.6314+129.6200/+30.6320+129.6400/+30.6311+129.6600/+30.6292+129.6800/+30.6277+129.7000/+30.6251+129.7200/+30.6200+129.7339/+30.6182+129.7400/+30.6140+129.7600/+30.6067+129.7800/+30.6000+129.7921/+30.5983+129.8000/+30.5956+129.8200/+30.5924+129.8400/+30.5862+129.8600/+30.5803+129.8800/+30.5800+129.8807/+30.5769+129.9000/+30.5735+129.9200/+30.5600+129.9333/+30.5569+129.9400/+30.5541+129.9600/+30.5429+129.9800/+30.5400+129.9837/+30.5383+130.0000/+30.5372+130.0200/+30.5365+130.0400/+30.5400+130.0458/+30.5473+130.0600/+30.5400+130.0784/+30.5384+130.0800/+30.5312+130.1000/+30.5200+130.1179/+30.5190+130.1200/+30.5094+130.1400/+30.5000+130.1515/+30.4993+130.1600/+30.4951+130.1800/+30.4800+130.1955/+30.4799+130.2000/+30.4796+130.2200/+30.4600+130.2396/+30.4400+130.2398/+30.4202+130.2200/+30.4201+130.2000/+30.4201+130.1800/+30.4202+130.1600/+30.4209+130.1400/+30.4241+130.1200/+30.4400+130.1009/+30.4401+130.1000/+30.4407+130.0800/+30.4420+130.0600/+30.4449+130.0400/+30.4519+130.0200/+30.4600+130.0063/+30.4607+130.0000/+30.4630+129.9800/+30.4674+129.9600/+30.4737+129.9400/+30.4800+129.9265/+30.4810+129.9200/+30.4813+129.9000/+30.4843+129.8800/+30.4882+129.8600/+30.4935+129.8400/+30.5000+129.8240/+30.5015+129.8200/+30.5026+129.8000/+30.5113+129.7800/+30.5200+129.7681/+30.5234+129.7600/+30.5282+129.7400/+30.5338+129.7200/+30.5365+129.7000/+30.5400+129.6910/+30.5459+129.6800/+30.5570+129.6600/+30.5600+129.6540/+30.5660+129.6400/+30.5740+129.6200/+30.5800+129.6057/+30.5825+129.6000/+30.5885+129.5800/+30.5954+129.5600/+30.6000+129.5485/+30.6200+129.5448/+30.6252+129.5400/+30.6320+129.5200/+30.6335+129.5000/+30.6389+129.4800/+30.6400+129.4754/+30.6470+129.4800/ +30.5226+130.0600/+30.5200+130.0626/+30.5199+130.0600/+30.5200+130.0586/+30.5226+130.0600/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4648+130.1800/+30.4768+130.2000/+30.4600+130.2168/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4217+130.2000/+30.4400+130.1804/+30.4488+130.1800/+30.4600+130.1732/+30.4648+130.1800/ 北西 4 鹿児島県屋久島町 4650500 2026-08-09T03:00:00+09:00 2026-08-09T06:00:00+09:00 降灰 70 +30.7020+129.4800/+30.7042+129.5000/+30.7020+129.5200/+30.7001+129.5400/+30.7000+129.5403/+30.6994+129.5400/+30.6941+129.5200/+30.6932+129.5000/+30.6977+129.4800/+30.7000+129.4674/+30.7020+129.4800/ +30.6774+129.5600/+30.6793+129.5800/+30.6797+129.6000/+30.6779+129.6200/+30.6768+129.6400/+30.6741+129.6600/+30.6690+129.6800/+30.6635+129.7000/+30.6600+129.7089/+30.6544+129.7200/+30.6466+129.7400/+30.6408+129.7600/+30.6400+129.7612/+30.6342+129.7800/+30.6301+129.8000/+30.6270+129.8200/+30.6234+129.8400/+30.6200+129.8457/+30.6105+129.8600/+30.6000+129.8763/+30.5992+129.8800/+30.5959+129.9000/+30.5916+129.9200/+30.5862+129.9400/+30.5800+129.9462/+30.5712+129.9600/+30.5600+129.9769/+30.5595+129.9800/+30.5566+130.0000/+30.5498+130.0200/+30.5400+130.0317/+30.5389+130.0400/+30.5370+130.0600/+30.5283+130.0800/+30.5200+130.0894/+30.5194+130.1000/+30.5177+130.1200/+30.5000+130.1396/+30.5000+130.1400/+30.4997+130.1600/+30.4987+130.1800/+30.4800+130.1991/+30.4800+130.2000/+30.4797+130.2200/+30.4600+130.2397/+30.4400+130.2398/+30.4202+130.2200/+30.4201+130.2000/+30.4201+130.1800/+30.4212+130.1600/+30.4365+130.1400/+30.4400+130.1364/+30.4405+130.1200/+30.4419+130.1000/+30.4471+130.0800/+30.4600+130.0645/+30.4606+130.0600/+30.4626+130.0400/+30.4680+130.0200/+30.4800+130.0028/+30.4805+130.0000/+30.4829+129.9800/+30.4887+129.9600/+30.4975+129.9400/+30.5000+129.9364/+30.5041+129.9200/+30.5024+129.9000/+30.5077+129.8800/+30.5147+129.8600/+30.5200+129.8468/+30.5222+129.8400/+30.5313+129.8200/+30.5337+129.8000/+30.5400+129.7815/+30.5407+129.7800/+30.5560+129.7600/+30.5600+129.7533/+30.5653+129.7400/+30.5731+129.7200/+30.5773+129.7000/+30.5800+129.6920/+30.5849+129.6800/+30.5965+129.6600/+30.6000+129.6548/+30.6114+129.6400/+30.6200+129.6242/+30.6220+129.6200/+30.6305+129.6000/+30.6374+129.5800/+30.6400+129.5732/+30.6531+129.5600/+30.6600+129.5510/+30.6774+129.5600/ 西 80 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4681+130.1800/+30.4773+130.2000/+30.4600+130.2173/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4215+130.2000/+30.4400+130.1810/+30.4519+130.1800/+30.4600+130.1714/+30.4681+130.1800/ 北西 4 鹿児島県屋久島町 4650500 2026-08-09T06:00:00+09:00 2026-08-09T09:00:00+09:00 降灰 70 +30.6630+129.5400/+30.6672+129.5600/+30.6677+129.5800/+30.6680+129.6000/+30.6657+129.6200/+30.6637+129.6400/+30.6603+129.6600/+30.6600+129.6611/+30.6531+129.6800/+30.6477+129.7000/+30.6409+129.7200/+30.6400+129.7232/+30.6373+129.7400/+30.6312+129.7600/+30.6265+129.7800/+30.6207+129.8000/+30.6200+129.8036/+30.6164+129.8200/+30.6105+129.8400/+30.6000+129.8509/+30.5976+129.8600/+30.5938+129.8800/+30.5894+129.9000/+30.5834+129.9200/+30.5800+129.9274/+30.5739+129.9400/+30.5600+129.9560/+30.5594+129.9600/+30.5565+129.9800/+30.5507+130.0000/+30.5400+130.0150/+30.5393+130.0200/+30.5373+130.0400/+30.5339+130.0600/+30.5200+130.0776/+30.5197+130.0800/+30.5184+130.1000/+30.5138+130.1200/+30.5000+130.1349/+30.4997+130.1400/+30.4995+130.1600/+30.4975+130.1800/+30.4800+130.1979/+30.4800+130.2000/+30.4797+130.2200/+30.4600+130.2397/+30.4400+130.2398/+30.4201+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4205+130.1600/+30.4222+130.1400/+30.4314+130.1200/+30.4400+130.1100/+30.4406+130.1000/+30.4419+130.0800/+30.4451+130.0600/+30.4522+130.0400/+30.4600+130.0292/+30.4616+130.0200/+30.4655+130.0000/+30.4748+129.9800/+30.4800+129.9705/+30.4814+129.9600/+30.4851+129.9400/+30.4918+129.9200/+30.4900+129.9000/+30.4970+129.8800/+30.5000+129.8740/+30.5050+129.8600/+30.5103+129.8400/+30.5188+129.8200/+30.5200+129.8180/+30.5279+129.8000/+30.5332+129.7800/+30.5400+129.7608/+30.5403+129.7600/+30.5475+129.7400/+30.5600+129.7203/+30.5602+129.7200/+30.5686+129.7000/+30.5742+129.6800/+30.5800+129.6621/+30.5807+129.6600/+30.5893+129.6400/+30.6000+129.6234/+30.6060+129.6200/+30.6200+129.6058/+30.6232+129.6000/+30.6297+129.5800/+30.6354+129.5600/+30.6400+129.5468/+30.6516+129.5400/+30.6600+129.5348/+30.6630+129.5400/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4605+130.1800/+30.4770+130.2000/+30.4600+130.2170/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4216+130.2000/+30.4400+130.1808/+30.4593+130.1800/+30.4600+130.1795/+30.4605+130.1800/ 北西 4 鹿児島県屋久島町 4650500 2026-08-09T09:00:00+09:00 2026-08-09T12:00:00+09:00 降灰 70 +30.6609+129.5400/+30.6600+129.5555/+30.6592+129.5600/+30.6510+129.5800/+30.6465+129.6000/+30.6400+129.6189/+30.6397+129.6200/+30.6358+129.6400/+30.6334+129.6600/+30.6314+129.6800/+30.6298+129.7000/+30.6277+129.7200/+30.6219+129.7400/+30.6200+129.7478/+30.6179+129.7600/+30.6099+129.7800/+30.6000+129.7943/+30.5984+129.8000/+30.5948+129.8200/+30.5900+129.8400/+30.5821+129.8600/+30.5800+129.8655/+30.5773+129.8800/+30.5738+129.9000/+30.5700+129.9200/+30.5600+129.9298/+30.5552+129.9400/+30.5479+129.9600/+30.5400+129.9705/+30.5386+129.9800/+30.5364+130.0000/+30.5318+130.0200/+30.5200+130.0380/+30.5198+130.0400/+30.5188+130.0600/+30.5172+130.0800/+30.5042+130.1000/+30.5000+130.1047/+30.4996+130.1200/+30.4992+130.1400/+30.4977+130.1600/+30.4813+130.1800/+30.4800+130.1813/+30.4799+130.2000/+30.4797+130.2200/+30.4600+130.2397/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4202+130.1600/+30.4207+130.1400/+30.4231+130.1200/+30.4400+130.1001/+30.4400+130.1000/+30.4407+130.0800/+30.4419+130.0600/+30.4441+130.0400/+30.4519+130.0200/+30.4600+130.0092/+30.4613+130.0000/+30.4641+129.9800/+30.4696+129.9600/+30.4800+129.9434/+30.4807+129.9400/+30.4829+129.9200/+30.4832+129.9000/+30.4868+129.8800/+30.4924+129.8600/+30.5000+129.8409/+30.5003+129.8400/+30.5063+129.8200/+30.5109+129.8000/+30.5200+129.7842/+30.5212+129.7800/+30.5266+129.7600/+30.5309+129.7400/+30.5368+129.7200/+30.5400+129.7095/+30.5468+129.7000/+30.5573+129.6800/+30.5600+129.6751/+30.5661+129.6600/+30.5722+129.6400/+30.5784+129.6200/+30.5800+129.6153/+30.5856+129.6000/+30.5947+129.5800/+30.6000+129.5709/+30.6196+129.5600/+30.6200+129.5596/+30.6309+129.5400/+30.6396+129.5200/+30.6400+129.5189/+30.6441+129.5200/+30.6600+129.5305/+30.6609+129.5400/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4601+130.1800/+30.4758+130.2000/+30.4600+130.2158/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4221+130.2000/+30.4400+130.1807/+30.4597+130.1800/+30.4600+130.1799/+30.4601+130.1800/ 北西 4 鹿児島県屋久島町 4650500 2026-08-09T12:00:00+09:00 2026-08-09T15:00:00+09:00 降灰 70 +30.6561+129.5200/+30.6598+129.5400/+30.6550+129.5600/+30.6489+129.5800/+30.6457+129.6000/+30.6400+129.6149/+30.6384+129.6200/+30.6348+129.6400/+30.6316+129.6600/+30.6277+129.6800/+30.6244+129.7000/+30.6215+129.7200/+30.6200+129.7237/+30.6146+129.7400/+30.6093+129.7600/+30.6002+129.7800/+30.6000+129.7803/+30.5963+129.8000/+30.5929+129.8200/+30.5875+129.8400/+30.5800+129.8543/+30.5779+129.8600/+30.5748+129.8800/+30.5717+129.9000/+30.5671+129.9200/+30.5600+129.9270/+30.5525+129.9400/+30.5458+129.9600/+30.5400+129.9681/+30.5383+129.9800/+30.5364+130.0000/+30.5320+130.0200/+30.5200+130.0359/+30.5195+130.0400/+30.5186+130.0600/+30.5167+130.0800/+30.5049+130.1000/+30.5000+130.1052/+30.4996+130.1200/+30.4992+130.1400/+30.4977+130.1600/+30.4819+130.1800/+30.4800+130.1819/+30.4799+130.2000/+30.4797+130.2200/+30.4600+130.2397/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4202+130.1600/+30.4206+130.1400/+30.4223+130.1200/+30.4311+130.1000/+30.4400+130.0882/+30.4404+130.0800/+30.4415+130.0600/+30.4432+130.0400/+30.4484+130.0200/+30.4600+130.0026/+30.4605+130.0000/+30.4625+129.9800/+30.4658+129.9600/+30.4740+129.9400/+30.4800+129.9292/+30.4815+129.9200/+30.4813+129.9000/+30.4846+129.8800/+30.4897+129.8600/+30.4956+129.8400/+30.5000+129.8290/+30.5032+129.8200/+30.5041+129.8000/+30.5140+129.7800/+30.5200+129.7724/+30.5250+129.7600/+30.5300+129.7400/+30.5360+129.7200/+30.5400+129.7009/+30.5405+129.7000/+30.5518+129.6800/+30.5600+129.6644/+30.5618+129.6600/+30.5683+129.6400/+30.5753+129.6200/+30.5800+129.6081/+30.5834+129.6000/+30.5931+129.5800/+30.6000+129.5689/+30.6200+129.5602/+30.6203+129.5600/+30.6306+129.5400/+30.6365+129.5200/+30.6400+129.5041/+30.6561+129.5200/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4764+130.2000/+30.4600+130.2164/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4216+130.2000/+30.4400+130.1806/+30.4600+130.1804/+30.4764+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-09T15:00:00+09:00 2026-08-09T18:00:00+09:00 降灰 70 +30.6044+129.4800/+30.6103+129.5000/+30.6119+129.5200/+30.6131+129.5400/+30.6125+129.5600/+30.6104+129.5800/+30.6083+129.6000/+30.6026+129.6200/+30.6000+129.6277/+30.5957+129.6400/+30.5916+129.6600/+30.5890+129.6800/+30.5873+129.7000/+30.5863+129.7200/+30.5832+129.7400/+30.5808+129.7600/+30.5800+129.7644/+30.5766+129.7800/+30.5704+129.8000/+30.5612+129.8200/+30.5600+129.8253/+30.5589+129.8400/+30.5553+129.8600/+30.5478+129.8800/+30.5400+129.8943/+30.5394+129.9000/+30.5375+129.9200/+30.5322+129.9400/+30.5286+129.9600/+30.5200+129.9738/+30.5193+129.9800/+30.5178+130.0000/+30.5168+130.0200/+30.5139+130.0400/+30.5000+130.0596/+30.5000+130.0600/+30.4993+130.0800/+30.4989+130.1000/+30.4983+130.1200/+30.4955+130.1400/+30.4819+130.1600/+30.4800+130.1624/+30.4799+130.1800/+30.4799+130.2000/+30.4794+130.2200/+30.4600+130.2394/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4201+130.1600/+30.4202+130.1400/+30.4204+130.1200/+30.4209+130.1000/+30.4218+130.0800/+30.4238+130.0600/+30.4284+130.0400/+30.4357+130.0200/+30.4400+130.0122/+30.4408+130.0000/+30.4420+129.9800/+30.4435+129.9600/+30.4462+129.9400/+30.4501+129.9200/+30.4466+129.9000/+30.4514+129.8800/+30.4580+129.8600/+30.4600+129.8531/+30.4627+129.8400/+30.4680+129.8200/+30.4699+129.8000/+30.4798+129.7800/+30.4800+129.7797/+30.4848+129.7600/+30.4895+129.7400/+30.4964+129.7200/+30.5000+129.7027/+30.5011+129.7000/+30.5102+129.6800/+30.5152+129.6600/+30.5200+129.6404/+30.5201+129.6400/+30.5251+129.6200/+30.5306+129.6000/+30.5370+129.5800/+30.5400+129.5723/+30.5496+129.5600/+30.5600+129.5452/+30.5655+129.5400/+30.5798+129.5200/+30.5800+129.5196/+30.5883+129.5000/+30.5964+129.4800/+30.6000+129.4712/+30.6044+129.4800/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4649+130.1800/+30.4759+130.2000/+30.4600+130.2158/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4214+130.2000/+30.4355+130.1800/+30.4400+130.1738/+30.4600+130.1721/+30.4649+130.1800/ 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、９日０９時から１２時までは火口から西方向に降灰が予想されます。 　９日０時から９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 　０９日００時から０３時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０９日０３時から０６時まで　西　　　　　　　８０ｋｍ　　４ｋｍ　　　　　 　０９日０６時から０９時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０９日０９時から１２時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０９日１２時から１５時まで　西　　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　０９日１５時から１８時まで　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。