2026-09-02T20:00:00Z 通常 気象庁本庁 気象庁 2026-09-03T05:00:00+09:00 2026-09-03T06:00:00+09:00 2026-09-04T00:00:00+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、３日０９時から１２時までは火口から西方向、３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 2026-09-03T06:00:00+09:00 2026-09-03T09:00:00+09:00 降灰 70 +30.5212+130.0600/+30.5200+130.0639/+30.5167+130.0600/+30.5200+130.0557/+30.5212+130.0600/ +30.5132+130.0800/+30.5094+130.1000/+30.5017+130.1200/+30.5000+130.1220/+30.4926+130.1400/+30.4904+130.1600/+30.4800+130.1729/+30.4797+130.1800/+30.4797+130.2000/+30.4786+130.2200/+30.4600+130.2386/+30.4400+130.2397/+30.4203+130.2200/+30.4200+130.2176/+30.4024+130.2000/+30.4003+130.1800/+30.4002+130.1600/+30.4002+130.1400/+30.4000+130.1273/+30.3931+130.1200/+30.3834+130.1000/+30.3819+130.0800/+30.3812+130.0600/+30.3806+130.0400/+30.3800+130.0314/+30.3730+130.0200/+30.3668+130.0000/+30.3652+129.9800/+30.3640+129.9600/+30.3623+129.9400/+30.3614+129.9200/+30.3600+129.9115/+30.3527+129.9000/+30.3503+129.8800/+30.3495+129.8600/+30.3478+129.8400/+30.3468+129.8200/+30.3439+129.8000/+30.3444+129.7800/+30.3450+129.7600/+30.3478+129.7400/+30.3515+129.7200/+30.3534+129.7000/+30.3547+129.6800/+30.3563+129.6600/+30.3590+129.6400/+30.3600+129.6346/+30.3631+129.6200/+30.3686+129.6000/+30.3741+129.5800/+30.3800+129.5628/+30.3811+129.5600/+30.3902+129.5400/+30.4000+129.5221/+30.4078+129.5400/+30.4153+129.5600/+30.4200+129.5745/+30.4216+129.5800/+30.4270+129.6000/+30.4328+129.6200/+30.4373+129.6400/+30.4400+129.6503/+30.4424+129.6600/+30.4481+129.6800/+30.4536+129.7000/+30.4583+129.7200/+30.4592+129.7400/+30.4600+129.7585/+30.4601+129.7600/+30.4638+129.7800/+30.4665+129.8000/+30.4643+129.8200/+30.4650+129.8400/+30.4652+129.8600/+30.4683+129.8800/+30.4701+129.9000/+30.4606+129.9200/+30.4607+129.9400/+30.4656+129.9600/+30.4688+129.9800/+30.4679+130.0000/+30.4698+130.0200/+30.4709+130.0400/+30.4744+130.0600/+30.4762+130.0800/+30.4800+130.0991/+30.4909+130.0800/+30.5000+130.0678/+30.5132+130.0800/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4697+130.1800/+30.4747+130.2000/+30.4600+130.2147/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4212+130.2000/+30.4284+130.1800/+30.4400+130.1624/+30.4600+130.1642/+30.4697+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-03T09:00:00+09:00 2026-09-03T12:00:00+09:00 降灰 70 +30.6017+129.9400/+30.6000+129.9468/+30.5981+129.9400/+30.6000+129.9374/+30.6017+129.9400/ +30.5838+129.9800/+30.5800+129.9875/+30.5738+129.9800/+30.5800+129.9624/+30.5838+129.9800/ +30.5698+130.0000/+30.5631+130.0200/+30.5600+130.0241/+30.5498+130.0200/+30.5539+130.0000/+30.5600+129.9917/+30.5698+130.0000/ +30.5459+130.0400/+30.5400+130.0500/+30.5345+130.0400/+30.5400+130.0274/+30.5459+130.0400/ +30.5200+129.6600/+30.5227+129.6800/+30.5249+129.7000/+30.5214+129.7200/+30.5200+129.7257/+30.5177+129.7400/+30.5154+129.7600/+30.5155+129.7800/+30.5156+129.8000/+30.5159+129.8200/+30.5151+129.8400/+30.5151+129.8600/+30.5147+129.8800/+30.5146+129.9000/+30.5065+129.9200/+30.5003+129.9400/+30.5000+129.9409/+30.4993+129.9600/+30.4984+129.9800/+30.4982+130.0000/+30.4975+130.0200/+30.4966+130.0400/+30.4964+130.0600/+30.4960+130.0800/+30.5000+130.0979/+30.5035+130.1000/+30.5067+130.1200/+30.5000+130.1280/+30.4908+130.1400/+30.4878+130.1600/+30.4800+130.1700/+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/+30.4200+130.1932/+30.4073+130.1800/+30.4023+130.1600/+30.4018+130.1400/+30.4020+130.1200/+30.4023+130.1000/+30.4025+130.0800/+30.4032+130.0600/+30.4038+130.0400/+30.4042+130.0200/+30.4049+130.0000/+30.4052+129.9800/+30.4054+129.9600/+30.4065+129.9400/+30.4095+129.9200/+30.4049+129.9000/+30.4068+129.8800/+30.4088+129.8600/+30.4138+129.8400/+30.4176+129.8200/+30.4146+129.8000/+30.4159+129.7800/+30.4177+129.7600/+30.4200+129.7477/+30.4215+129.7400/+30.4262+129.7200/+30.4299+129.7000/+30.4328+129.6800/+30.4382+129.6600/+30.4400+129.6525/+30.4453+129.6400/+30.4531+129.6200/+30.4600+129.6057/+30.4680+129.6000/+30.4800+129.5890/+30.4911+129.5800/+30.5000+129.5736/+30.5018+129.5800/+30.5067+129.6000/+30.5122+129.6200/+30.5166+129.6400/+30.5200+129.6599/+30.5200+129.6600/ +30.5218+130.0800/+30.5200+130.0846/+30.5172+130.0800/+30.5200+130.0699/+30.5218+130.0800/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4634+130.1800/+30.4764+130.2000/+30.4600+130.2164/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4217+130.2000/+30.4349+130.1800/+30.4400+130.1723/+30.4600+130.1742/+30.4634+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-09-03T12:00:00+09:00 2026-09-03T15:00:00+09:00 降灰 70 +30.5204+129.6000/+30.5251+129.6200/+30.5284+129.6400/+30.5300+129.6600/+30.5305+129.6800/+30.5308+129.7000/+30.5367+129.7200/+30.5369+129.7400/+30.5371+129.7600/+30.5376+129.7800/+30.5380+129.8000/+30.5307+129.8200/+30.5297+129.8400/+30.5284+129.8600/+30.5270+129.8800/+30.5255+129.9000/+30.5200+129.9071/+30.5159+129.9200/+30.5143+129.9400/+30.5125+129.9600/+30.5094+129.9800/+30.5005+130.0000/+30.5000+130.0012/+30.4994+130.0200/+30.4989+130.0400/+30.4983+130.0600/+30.4977+130.0800/+30.4965+130.1000/+30.4936+130.1200/+30.4800+130.1390/+30.4800+130.1400/+30.4799+130.1600/+30.4799+130.1800/+30.4799+130.2000/+30.4795+130.2200/+30.4600+130.2395/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4200+130.1800/+30.4200+130.1726/+30.4098+130.1600/+30.4065+130.1400/+30.4069+130.1200/+30.4085+130.1000/+30.4084+130.0800/+30.4113+130.0600/+30.4145+130.0400/+30.4195+130.0200/+30.4200+130.0168/+30.4204+130.0000/+30.4206+129.9800/+30.4211+129.9600/+30.4224+129.9400/+30.4227+129.9200/+30.4230+129.9000/+30.4249+129.8800/+30.4264+129.8600/+30.4284+129.8400/+30.4309+129.8200/+30.4311+129.8000/+30.4355+129.7800/+30.4400+129.7634/+30.4407+129.7600/+30.4443+129.7400/+30.4485+129.7200/+30.4520+129.7000/+30.4587+129.6800/+30.4600+129.6762/+30.4655+129.6600/+30.4716+129.6400/+30.4772+129.6200/+30.4800+129.6107/+30.4836+129.6000/+30.4896+129.5800/+30.4965+129.5600/+30.5000+129.5481/+30.5077+129.5600/+30.5161+129.5800/+30.5200+129.5976/+30.5204+129.6000/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4639+130.1800/+30.4762+130.2000/+30.4600+130.2162/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4217+130.2000/+30.4400+130.1800/+30.4402+130.1800/+30.4600+130.1743/+30.4639+130.1800/ 北西 4 鹿児島県屋久島町 4650500 2026-09-03T15:00:00+09:00 2026-09-03T18:00:00+09:00 降灰 70 +30.5212+129.5800/+30.5269+129.6000/+30.5302+129.6200/+30.5323+129.6400/+30.5334+129.6600/+30.5339+129.6800/+30.5343+129.7000/+30.5380+129.7200/+30.5369+129.7400/+30.5358+129.7600/+30.5343+129.7800/+30.5328+129.8000/+30.5272+129.8200/+30.5257+129.8400/+30.5238+129.8600/+30.5213+129.8800/+30.5200+129.8885/+30.5191+129.9000/+30.5118+129.9200/+30.5116+129.9400/+30.5103+129.9600/+30.5055+129.9800/+30.5000+129.9945/+30.4997+130.0000/+30.4992+130.0200/+30.4985+130.0400/+30.4980+130.0600/+30.4971+130.0800/+30.4957+130.1000/+30.4925+130.1200/+30.4800+130.1384/+30.4800+130.1400/+30.4799+130.1600/+30.4799+130.1800/+30.4799+130.2000/+30.4796+130.2200/+30.4600+130.2396/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4200+130.1800/+30.4200+130.1736/+30.4094+130.1600/+30.4062+130.1400/+30.4064+130.1200/+30.4073+130.1000/+30.4081+130.0800/+30.4098+130.0600/+30.4097+130.0400/+30.4108+130.0200/+30.4164+130.0000/+30.4200+129.9889/+30.4206+129.9800/+30.4202+129.9600/+30.4201+129.9400/+30.4224+129.9200/+30.4206+129.9000/+30.4218+129.8800/+30.4245+129.8600/+30.4263+129.8400/+30.4284+129.8200/+30.4272+129.8000/+30.4336+129.7800/+30.4400+129.7650/+30.4413+129.7600/+30.4442+129.7400/+30.4482+129.7200/+30.4516+129.7000/+30.4573+129.6800/+30.4600+129.6717/+30.4637+129.6600/+30.4699+129.6400/+30.4762+129.6200/+30.4800+129.6085/+30.4829+129.6000/+30.4892+129.5800/+30.4966+129.5600/+30.5000+129.5504/+30.5095+129.5600/+30.5200+129.5770/+30.5212+129.5800/ 西 60 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/+30.4219+130.2000/+30.4395+130.1800/+30.4400+130.1793/+30.4432+130.1800/+30.4600+130.1806/+30.4764+130.2000/ 西 4 鹿児島県屋久島町 4650500 2026-09-03T18:00:00+09:00 2026-09-03T21:00:00+09:00 降灰 70 +30.5619+129.5600/+30.5665+129.5800/+30.5697+129.6000/+30.5719+129.6200/+30.5738+129.6400/+30.5747+129.6600/+30.5749+129.6800/+30.5751+129.7000/+30.5677+129.7200/+30.5620+129.7400/+30.5600+129.7459/+30.5578+129.7600/+30.5559+129.7800/+30.5544+129.8000/+30.5523+129.8200/+30.5517+129.8400/+30.5478+129.8600/+30.5437+129.8800/+30.5400+129.8909/+30.5394+129.9000/+30.5376+129.9200/+30.5330+129.9400/+30.5303+129.9600/+30.5223+129.9800/+30.5200+129.9838/+30.5189+130.0000/+30.5182+130.0200/+30.5173+130.0400/+30.5152+130.0600/+30.5058+130.0800/+30.5000+130.0862/+30.4995+130.1000/+30.4992+130.1200/+30.4987+130.1400/+30.4953+130.1600/+30.4800+130.1774/+30.4800+130.1800/+30.4799+130.2000/+30.4796+130.2200/+30.4600+130.2396/+30.4400+130.2398/+30.4202+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4201+130.1600/+30.4203+130.1400/+30.4209+130.1200/+30.4221+130.1000/+30.4239+130.0800/+30.4272+130.0600/+30.4341+130.0400/+30.4395+130.0200/+30.4400+130.0185/+30.4408+130.0000/+30.4424+129.9800/+30.4436+129.9600/+30.4460+129.9400/+30.4500+129.9200/+30.4444+129.9000/+30.4470+129.8800/+30.4518+129.8600/+30.4562+129.8400/+30.4600+129.8220/+30.4603+129.8200/+30.4600+129.8171/+30.4574+129.8000/+30.4600+129.7876/+30.4618+129.7800/+30.4683+129.7600/+30.4727+129.7400/+30.4783+129.7200/+30.4800+129.7147/+30.4829+129.7000/+30.4807+129.6800/+30.4863+129.6600/+30.4928+129.6400/+30.5000+129.6210/+30.5007+129.6200/+30.5127+129.6000/+30.5200+129.5838/+30.5218+129.5800/+30.5319+129.5600/+30.5400+129.5400/+30.5400+129.5398/+30.5403+129.5400/+30.5600+129.5499/+30.5619+129.5600/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4685+130.1800/+30.4769+130.2000/+30.4600+130.2169/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4215+130.2000/+30.4400+130.1802/+30.4431+130.1800/+30.4600+130.1692/+30.4685+130.1800/ 北西 4 鹿児島県屋久島町 4650500 2026-09-03T21:00:00+09:00 2026-09-04T00:00:00+09:00 降灰 70 +30.6812+129.6400/+30.6800+129.6463/+30.6777+129.6600/+30.6704+129.6800/+30.6639+129.7000/+30.6600+129.7102/+30.6561+129.7200/+30.6498+129.7400/+30.6432+129.7600/+30.6400+129.7664/+30.6369+129.7800/+30.6334+129.8000/+30.6310+129.8200/+30.6284+129.8400/+30.6200+129.8570/+30.6179+129.8600/+30.6072+129.8800/+30.6000+129.8939/+30.5993+129.9000/+30.5985+129.9200/+30.5977+129.9400/+30.5945+129.9600/+30.5853+129.9800/+30.5800+129.9948/+30.5785+130.0000/+30.5741+130.0200/+30.5600+130.0392/+30.5597+130.0400/+30.5556+130.0600/+30.5453+130.0800/+30.5400+130.0864/+30.5343+130.1000/+30.5221+130.1200/+30.5200+130.1223/+30.5149+130.1400/+30.5000+130.1572/+30.4998+130.1600/+30.4982+130.1800/+30.4800+130.1987/+30.4800+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/+30.4208+130.1600/+30.4273+130.1400/+30.4400+130.1251/+30.4403+130.1200/+30.4413+130.1000/+30.4444+130.0800/+30.4567+130.0600/+30.4600+130.0555/+30.4615+130.0400/+30.4646+130.0200/+30.4718+130.0000/+30.4800+129.9872/+30.4813+129.9800/+30.4847+129.9600/+30.4910+129.9400/+30.5000+129.9259/+30.5016+129.9200/+30.5000+129.9032/+30.4988+129.9000/+30.5000+129.8977/+30.5062+129.8800/+30.5147+129.8600/+30.5200+129.8452/+30.5214+129.8400/+30.5288+129.8200/+30.5335+129.8000/+30.5389+129.7800/+30.5400+129.7767/+30.5474+129.7600/+30.5577+129.7400/+30.5600+129.7369/+30.5684+129.7200/+30.5723+129.7000/+30.5781+129.6800/+30.5800+129.6744/+30.5856+129.6600/+30.5950+129.6400/+30.6000+129.6310/+30.6143+129.6200/+30.6200+129.6150/+30.6347+129.6000/+30.6400+129.5884/+30.6516+129.5800/+30.6600+129.5714/+30.6666+129.5800/+30.6751+129.6000/+30.6795+129.6200/+30.6800+129.6247/+30.6812+129.6400/ 西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4670+130.1800/+30.4774+130.2000/+30.4600+130.2174/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4214+130.2000/+30.4400+130.1808/+30.4521+130.1800/+30.4600+130.1723/+30.4670+130.1800/ 北西 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、３日０９時から１２時までは火口から西方向、３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。 　３日６時から３日２４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 　０３日０６時から０９時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０３日０９時から１２時まで　西　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０３日１２時から１５時まで　西　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０３日１５時から１８時まで　西　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０３日１８時から２１時まで　西　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０３日２１時から２４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。