2026-09-09T05:00:00Z 通常 気象庁本庁 気象庁 2026-09-09T14:00:00+09:00 2026-09-09T15:00:00+09:00 2026-09-10T09:00:00+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 2026-09-09T15:00:00+09:00 2026-09-09T18:00:00+09:00 降灰 70 +30.5013+129.9400/+30.5000+129.9483/+30.4987+129.9600/+30.5000+129.9622/+30.5107+129.9800/+30.5096+130.0000/+30.5157+130.0200/+30.5166+130.0400/+30.5137+130.0600/+30.5119+130.0800/+30.5070+130.1000/+30.5000+130.1144/+30.4987+130.1200/+30.4933+130.1400/+30.4809+130.1600/+30.4800+130.1610/+30.4798+130.1800/+30.4799+130.2000/+30.4797+130.2200/+30.4600+130.2397/+30.4400+130.2399/+30.4200+130.2200/+30.4005+130.2000/+30.4002+130.1800/+30.4001+130.1600/+30.4000+130.1582/+30.3857+130.1400/+30.3829+130.1200/+30.3819+130.1000/+30.3809+130.0800/+30.3800+130.0735/+30.3716+130.0600/+30.3681+130.0400/+30.3644+130.0200/+30.3641+130.0000/+30.3600+129.9826/+30.3584+129.9800/+30.3551+129.9600/+30.3510+129.9400/+30.3437+129.9200/+30.3446+129.9000/+30.3453+129.8800/+30.3456+129.8600/+30.3528+129.8400/+30.3600+129.8218/+30.3628+129.8200/+30.3800+129.8100/+30.4000+129.8039/+30.4200+129.8151/+30.4257+129.8200/+30.4400+129.8264/+30.4600+129.8384/+30.4615+129.8400/+30.4782+129.8600/+30.4800+129.8660/+30.4858+129.8800/+30.4915+129.9000/+30.4913+129.9200/+30.5000+129.9375/+30.5013+129.9400/ 西 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4577+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4232+130.2000/+30.4400+130.1821/+30.4577+130.2000/ 南西 2 鹿児島県屋久島町 4650500 2026-09-09T18:00:00+09:00 2026-09-09T21:00:00+09:00 降灰 70 +30.5226+129.6200/+30.5249+129.6400/+30.5258+129.6600/+30.5258+129.6800/+30.5258+129.7000/+30.5200+129.7097/+30.5156+129.7200/+30.5144+129.7400/+30.5136+129.7600/+30.5129+129.7800/+30.5123+129.8000/+30.5115+129.8200/+30.5117+129.8400/+30.5118+129.8600/+30.5109+129.8800/+30.5098+129.9000/+30.5000+129.9094/+30.4944+129.9200/+30.4928+129.9400/+30.4914+129.9600/+30.4904+129.9800/+30.4857+130.0000/+30.4800+130.0171/+30.4800+130.0200/+30.4798+130.0400/+30.4800+130.0466/+30.4956+130.0400/+30.5000+130.0359/+30.5026+130.0400/+30.5107+130.0600/+30.5110+130.0800/+30.5020+130.1000/+30.5000+130.1028/+30.4947+130.1200/+30.4914+130.1400/+30.4800+130.1573/+30.4799+130.1600/+30.4798+130.1800/+30.4799+130.2000/+30.4796+130.2200/+30.4600+130.2396/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2074/+30.4126+130.2000/+30.4013+130.1800/+30.4007+130.1600/+30.4008+130.1400/+30.4011+130.1200/+30.4014+130.1000/+30.4019+130.0800/+30.4025+130.0600/+30.4034+130.0400/+30.4047+130.0200/+30.4057+130.0000/+30.4074+129.9800/+30.4109+129.9600/+30.4137+129.9400/+30.4200+129.9238/+30.4205+129.9200/+30.4205+129.9000/+30.4230+129.8800/+30.4259+129.8600/+30.4276+129.8400/+30.4299+129.8200/+30.4291+129.8000/+30.4377+129.7800/+30.4400+129.7751/+30.4437+129.7600/+30.4468+129.7400/+30.4504+129.7200/+30.4544+129.7000/+30.4600+129.6857/+30.4650+129.6800/+30.4711+129.6600/+30.4762+129.6400/+30.4800+129.6261/+30.4817+129.6200/+30.4874+129.6000/+30.4922+129.5800/+30.4977+129.5600/+30.5000+129.5539/+30.5056+129.5600/+30.5144+129.5800/+30.5191+129.6000/+30.5200+129.6045/+30.5226+129.6200/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4679+130.2000/+30.4600+130.2079/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4223+130.2000/+30.4400+130.1806/+30.4600+130.1883/+30.4679+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-09-09T21:00:00+09:00 2026-09-10T00:00:00+09:00 降灰 70 +30.5208+129.6600/+30.5226+129.6800/+30.5239+129.7000/+30.5216+129.7200/+30.5200+129.7284/+30.5182+129.7400/+30.5158+129.7600/+30.5140+129.7800/+30.5127+129.8000/+30.5130+129.8200/+30.5125+129.8400/+30.5115+129.8600/+30.5099+129.8800/+30.5090+129.9000/+30.5000+129.9121/+30.4979+129.9200/+30.4973+129.9400/+30.4972+129.9600/+30.4964+129.9800/+30.4952+130.0000/+30.4942+130.0200/+30.4921+130.0400/+30.4900+130.0600/+30.4834+130.0800/+30.4800+130.0886/+30.4798+130.1000/+30.4796+130.1200/+30.4798+130.1400/+30.4798+130.1600/+30.4799+130.1800/+30.4799+130.2000/+30.4795+130.2200/+30.4600+130.2395/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4200+130.1987/+30.4026+130.1800/+30.4013+130.1600/+30.4012+130.1400/+30.4014+130.1200/+30.4017+130.1000/+30.4020+130.0800/+30.4023+130.0600/+30.4026+130.0400/+30.4029+130.0200/+30.4034+130.0000/+30.4038+129.9800/+30.4052+129.9600/+30.4075+129.9400/+30.4087+129.9200/+30.4053+129.9000/+30.4083+129.8800/+30.4135+129.8600/+30.4193+129.8400/+30.4200+129.8376/+30.4226+129.8200/+30.4200+129.8000/+30.4240+129.7800/+30.4296+129.7600/+30.4369+129.7400/+30.4400+129.7334/+30.4447+129.7200/+30.4480+129.7000/+30.4547+129.6800/+30.4600+129.6701/+30.4660+129.6600/+30.4757+129.6400/+30.4800+129.6297/+30.4843+129.6200/+30.4940+129.6000/+30.5000+129.5831/+30.5060+129.6000/+30.5131+129.6200/+30.5178+129.6400/+30.5200+129.6540/+30.5208+129.6600/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4641+130.2000/+30.4600+130.2041/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4221+130.2000/+30.4400+130.1801/+30.4600+130.1928/+30.4641+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-09-10T00:00:00+09:00 2026-09-10T03:00:00+09:00 降灰 70 +30.5650+130.0600/+30.5600+130.0701/+30.5552+130.0600/+30.5600+130.0560/+30.5650+130.0600/ +30.5430+129.7800/+30.5459+129.8000/+30.5511+129.8200/+30.5503+129.8400/+30.5488+129.8600/+30.5442+129.8800/+30.5400+129.8959/+30.5395+129.9000/+30.5377+129.9200/+30.5340+129.9400/+30.5307+129.9600/+30.5243+129.9800/+30.5200+129.9890/+30.5188+130.0000/+30.5184+130.0200/+30.5166+130.0400/+30.5139+130.0600/+30.5098+130.0800/+30.5000+130.0933/+30.4995+130.1000/+30.4991+130.1200/+30.4989+130.1400/+30.4979+130.1600/+30.4895+130.1800/+30.4800+130.1901/+30.4800+130.2000/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4201+130.1600/+30.4203+130.1400/+30.4208+130.1200/+30.4219+130.1000/+30.4237+130.0800/+30.4269+130.0600/+30.4343+130.0400/+30.4400+130.0284/+30.4412+130.0200/+30.4438+130.0000/+30.4488+129.9800/+30.4550+129.9600/+30.4576+129.9400/+30.4600+129.9266/+30.4607+129.9200/+30.4624+129.9000/+30.4700+129.8800/+30.4800+129.8633/+30.4814+129.8600/+30.4853+129.8400/+30.4913+129.8200/+30.5000+129.8028/+30.5021+129.8000/+30.5069+129.7800/+30.5126+129.7600/+30.5190+129.7400/+30.5200+129.7373/+30.5248+129.7400/+30.5375+129.7600/+30.5400+129.7671/+30.5430+129.7800/ +30.5494+130.0800/+30.5400+130.0843/+30.5377+130.0800/+30.5400+130.0756/+30.5494+130.0800/ 西 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4678+130.2000/+30.4663+130.2200/+30.4600+130.2263/+30.4400+130.2388/+30.4212+130.2200/+30.4246+130.2000/+30.4400+130.1834/+30.4600+130.1904/+30.4678+130.2000/ 北西 2 鹿児島県屋久島町 4650500 2026-09-10T03:00:00+09:00 2026-09-10T06:00:00+09:00 降灰 70 +30.6220+130.0600/+30.6200+130.0627/+30.6132+130.0800/+30.6073+130.1000/+30.6000+130.1072/+30.5919+130.1200/+30.5800+130.1317/+30.5721+130.1400/+30.5600+130.1512/+30.5471+130.1600/+30.5400+130.1667/+30.5200+130.1794/+30.5193+130.1800/+30.5000+130.1979/+30.4991+130.2000/+30.4800+130.2188/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2000/+30.4208+130.1800/+30.4400+130.1605/+30.4403+130.1600/+30.4432+130.1400/+30.4600+130.1220/+30.4605+130.1200/+30.4632+130.1000/+30.4788+130.0800/+30.4800+130.0785/+30.4834+130.0600/+30.4913+130.0400/+30.5000+130.0278/+30.5019+130.0200/+30.5077+130.0000/+30.5200+129.9818/+30.5207+129.9800/+30.5242+129.9600/+30.5325+129.9400/+30.5400+129.9214/+30.5409+129.9200/+30.5491+129.9000/+30.5559+129.8800/+30.5600+129.8686/+30.5657+129.8600/+30.5800+129.8400/+30.5800+129.8399/+30.5926+129.8200/+30.6000+129.8009/+30.6100+129.8200/+30.6138+129.8400/+30.6158+129.8600/+30.6101+129.8800/+30.6038+129.9000/+30.6000+129.9098/+30.5974+129.9200/+30.5932+129.9400/+30.5834+129.9600/+30.5800+129.9661/+30.5781+129.9800/+30.5764+130.0000/+30.5701+130.0200/+30.5655+130.0400/+30.5600+130.0474/+30.5581+130.0600/+30.5600+130.0660/+30.5700+130.0600/+30.5800+130.0521/+30.6000+130.0543/+30.6200+130.0576/+30.6220+130.0600/ 北西 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4686+130.2000/+30.4718+130.2200/+30.4600+130.2318/+30.4400+130.2388/+30.4212+130.2200/+30.4309+130.2000/+30.4400+130.1906/+30.4600+130.1913/+30.4686+130.2000/ 北西 2 鹿児島県屋久島町 4650500 2026-09-10T06:00:00+09:00 2026-09-10T09:00:00+09:00 降灰 70 +30.5822+129.8400/+30.5816+129.8600/+30.5800+129.8665/+30.5749+129.8800/+30.5707+129.9000/+30.5682+129.9200/+30.5623+129.9400/+30.5600+129.9429/+30.5561+129.9600/+30.5553+129.9800/+30.5521+130.0000/+30.5476+130.0200/+30.5400+130.0317/+30.5383+130.0400/+30.5385+130.0600/+30.5400+130.0699/+30.5600+130.0623/+30.5632+130.0600/+30.5800+130.0479/+30.5930+130.0600/+30.5842+130.0800/+30.5800+130.0847/+30.5699+130.1000/+30.5600+130.1096/+30.5485+130.1200/+30.5400+130.1266/+30.5282+130.1400/+30.5200+130.1491/+30.5120+130.1600/+30.5000+130.1726/+30.4991+130.1800/+30.4800+130.1995/+30.4800+130.2000/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2000/+30.4200+130.1867/+30.4164+130.1800/+30.4200+130.1684/+30.4201+130.1600/+30.4211+130.1400/+30.4243+130.1200/+30.4322+130.1000/+30.4400+130.0868/+30.4413+130.0800/+30.4449+130.0600/+30.4505+130.0400/+30.4600+130.0270/+30.4630+130.0200/+30.4684+130.0000/+30.4800+129.9802/+30.4801+129.9800/+30.4873+129.9600/+30.4948+129.9400/+30.5000+129.9320/+30.5058+129.9200/+30.5107+129.9000/+30.5200+129.8814/+30.5206+129.8800/+30.5301+129.8600/+30.5400+129.8421/+30.5432+129.8400/+30.5569+129.8200/+30.5600+129.8134/+30.5659+129.8200/+30.5800+129.8348/+30.5822+129.8400/ 西 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4689+130.2000/+30.4721+130.2200/+30.4600+130.2321/+30.4400+130.2388/+30.4212+130.2200/+30.4295+130.2000/+30.4400+130.1889/+30.4600+130.1902/+30.4689+130.2000/ 北西 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、９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。 　９日１５時から１０日９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１５時から１８時まで　西　　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　０９日１８時から２１時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　０９日２１時から２４時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１０日００時から０３時まで　西　　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１０日０３時から０６時まで　北西　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１０日０６時から０９時まで　西　　　　　　　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。