2026-09-09T11:00:00Z 通常 気象庁本庁 気象庁 2026-09-09T20:00:00+09:00 2026-09-09T21:00:00+09:00 2026-09-10T15:00:00+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、１０日０９時から１２時までは火口から北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 2026-09-09T21:00:00+09:00 2026-09-10T00:00:00+09:00 降灰 70 +30.5422+130.0200/+30.5400+130.0298/+30.5378+130.0200/+30.5400+130.0132/+30.5422+130.0200/ +30.5270+130.0600/+30.5200+130.0755/+30.5121+130.0600/+30.5200+130.0468/+30.5270+130.0600/ +30.5005+129.5600/+30.5067+129.5800/+30.5111+129.6000/+30.5130+129.6200/+30.5145+129.6400/+30.5156+129.6600/+30.5165+129.6800/+30.5162+129.7000/+30.5101+129.7200/+30.5091+129.7400/+30.5083+129.7600/+30.5086+129.7800/+30.5088+129.8000/+30.5053+129.8200/+30.5033+129.8400/+30.5018+129.8600/+30.5010+129.8800/+30.5000+129.9000/+30.4919+129.9200/+30.4904+129.9400/+30.4883+129.9600/+30.4843+129.9800/+30.4800+129.9935/+30.4797+130.0000/+30.4791+130.0200/+30.4789+130.0400/+30.4789+130.0600/+30.4789+130.0800/+30.4793+130.1000/+30.4798+130.1200/+30.4800+130.1282/+30.4844+130.1400/+30.4800+130.1502/+30.4799+130.1600/+30.4797+130.1800/+30.4799+130.2000/+30.4796+130.2200/+30.4600+130.2396/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2146/+30.4054+130.2000/+30.4009+130.1800/+30.4006+130.1600/+30.4007+130.1400/+30.4008+130.1200/+30.4010+130.1000/+30.4011+130.0800/+30.4012+130.0600/+30.4012+130.0400/+30.4019+130.0200/+30.4021+130.0000/+30.4024+129.9800/+30.4035+129.9600/+30.4050+129.9400/+30.4094+129.9200/+30.4046+129.9000/+30.4076+129.8800/+30.4114+129.8600/+30.4162+129.8400/+30.4200+129.8272/+30.4210+129.8200/+30.4200+129.8106/+30.4181+129.8000/+30.4200+129.7885/+30.4216+129.7800/+30.4262+129.7600/+30.4334+129.7400/+30.4400+129.7273/+30.4437+129.7200/+30.4496+129.7000/+30.4592+129.6800/+30.4600+129.6786/+30.4717+129.6600/+30.4788+129.6400/+30.4800+129.6349/+30.4835+129.6200/+30.4879+129.6000/+30.4935+129.5800/+30.4996+129.5600/+30.5000+129.5586/+30.5005+129.5600/ +30.5073+130.0800/+30.5000+130.0882/+30.4987+130.0800/+30.5000+130.0781/+30.5073+130.0800/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4666+130.2000/+30.4600+130.2066/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4225+130.2000/+30.4400+130.1805/+30.4600+130.1893/+30.4666+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 +30.6219+129.9600/+30.6272+129.9800/+30.6200+129.9904/+30.6162+130.0000/+30.6065+130.0200/+30.6000+130.0267/+30.5926+130.0400/+30.5800+130.0569/+30.5781+130.0600/+30.5709+130.0800/+30.5600+130.0930/+30.5549+130.1000/+30.5400+130.1167/+30.5380+130.1200/+30.5200+130.1398/+30.5199+130.1400/+30.5107+130.1600/+30.5000+130.1711/+30.4978+130.1800/+30.4800+130.1985/+30.4800+130.2000/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2096/+30.4105+130.2000/+30.4032+130.1800/+30.4032+130.1600/+30.4043+130.1400/+30.4053+130.1200/+30.4065+130.1000/+30.4095+130.0800/+30.4111+130.0600/+30.4200+130.0406/+30.4202+130.0400/+30.4215+130.0200/+30.4273+130.0000/+30.4269+129.9800/+30.4322+129.9600/+30.4400+129.9414/+30.4409+129.9400/+30.4506+129.9200/+30.4600+129.9061/+30.4693+129.9000/+30.4741+129.8800/+30.4759+129.8600/+30.4800+129.8400/+30.4800+129.8399/+30.4800+129.8400/+30.4869+129.8600/+30.4904+129.8800/+30.5000+129.8955/+30.5200+129.8855/+30.5261+129.8800/+30.5400+129.8721/+30.5494+129.8800/+30.5578+129.9000/+30.5596+129.9200/+30.5583+129.9400/+30.5571+129.9600/+30.5575+129.9800/+30.5574+130.0000/+30.5600+130.0059/+30.5652+130.0000/+30.5800+129.9814/+30.5823+129.9800/+30.5950+129.9600/+30.6000+129.9510/+30.6200+129.9533/+30.6219+129.9600/ +30.5012+129.9200/+30.5004+129.9400/+30.5000+129.9410/+30.4994+129.9400/+30.4800+129.9205/+30.4783+129.9200/+30.4800+129.9168/+30.5000+129.9101/+30.5012+129.9200/ 西 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4679+130.2000/+30.4638+130.2200/+30.4600+130.2238/+30.4400+130.2388/+30.4212+130.2200/+30.4276+130.2000/+30.4400+130.1864/+30.4600+130.1912/+30.4679+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 +30.6028+130.0200/+30.6000+130.0257/+30.5945+130.0200/+30.6000+130.0176/+30.6028+130.0200/ +30.5827+129.8200/+30.5884+129.8400/+30.5868+129.8600/+30.5843+129.8800/+30.5800+129.8989/+30.5798+129.9000/+30.5752+129.9200/+30.5600+129.9392/+30.5598+129.9400/+30.5562+129.9600/+30.5526+129.9800/+30.5476+130.0000/+30.5400+130.0140/+30.5392+130.0200/+30.5378+130.0400/+30.5360+130.0600/+30.5400+130.0670/+30.5524+130.0600/+30.5600+130.0526/+30.5715+130.0400/+30.5800+130.0278/+30.5925+130.0400/+30.5895+130.0600/+30.5800+130.0750/+30.5768+130.0800/+30.5697+130.1000/+30.5600+130.1123/+30.5555+130.1200/+30.5400+130.1381/+30.5390+130.1400/+30.5212+130.1600/+30.5200+130.1611/+30.5057+130.1800/+30.5000+130.1856/+30.4928+130.2000/+30.4800+130.2127/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4209+130.1600/+30.4245+130.1400/+30.4400+130.1204/+30.4401+130.1200/+30.4419+130.1000/+30.4451+130.0800/+30.4592+130.0600/+30.4600+130.0585/+30.4622+130.0400/+30.4665+130.0200/+30.4792+130.0000/+30.4800+129.9985/+30.4831+129.9800/+30.4892+129.9600/+30.5000+129.9413/+30.5005+129.9400/+30.5045+129.9200/+30.5073+129.9000/+30.5160+129.8800/+30.5200+129.8705/+30.5232+129.8600/+30.5332+129.8400/+30.5400+129.8307/+30.5483+129.8200/+30.5580+129.8000/+30.5600+129.7955/+30.5694+129.8000/+30.5800+129.8104/+30.5827+129.8200/ 西 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4695+130.2000/+30.4697+130.2200/+30.4600+130.2297/+30.4400+130.2388/+30.4212+130.2200/+30.4297+130.2000/+30.4400+130.1888/+30.4600+130.1896/+30.4695+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 +30.7264+130.0400/+30.7252+130.0600/+30.7200+130.0677/+30.7139+130.0800/+30.7000+130.0921/+30.6924+130.1000/+30.6800+130.1061/+30.6600+130.1064/+30.6515+130.1000/+30.6478+130.0800/+30.6400+130.0766/+30.6377+130.0800/+30.6243+130.1000/+30.6200+130.1036/+30.6141+130.1200/+30.6000+130.1343/+30.5968+130.1400/+30.5800+130.1572/+30.5775+130.1600/+30.5600+130.1765/+30.5565+130.1800/+30.5400+130.1957/+30.5292+130.2000/+30.5200+130.2089/+30.5000+130.2196/+30.4995+130.2200/+30.4800+130.2394/+30.4600+130.2400/+30.4400+130.2400/+30.4200+130.2200/+30.4201+130.2000/+30.4262+130.1800/+30.4400+130.1659/+30.4445+130.1600/+30.4600+130.1426/+30.4628+130.1400/+30.4800+130.1210/+30.4819+130.1200/+30.5000+130.1029/+30.5041+130.1000/+30.5200+130.0829/+30.5235+130.0800/+30.5400+130.0662/+30.5475+130.0600/+30.5600+130.0445/+30.5633+130.0400/+30.5742+130.0200/+30.5800+130.0138/+30.6000+130.0075/+30.6130+130.0000/+30.6200+129.9918/+30.6332+129.9800/+30.6400+129.9752/+30.6600+129.9606/+30.6754+129.9800/+30.6759+130.0000/+30.6768+130.0200/+30.6800+130.0357/+30.6896+130.0400/+30.7000+130.0412/+30.7056+130.0400/+30.7200+130.0367/+30.7264+130.0400/ +30.6719+130.0400/+30.6600+130.0543/+30.6596+130.0400/+30.6600+130.0386/+30.6719+130.0400/ 北西 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4622+130.2000/+30.4728+130.2200/+30.4600+130.2326/+30.4400+130.2388/+30.4212+130.2200/+30.4400+130.2002/+30.4525+130.2000/+30.4600+130.1980/+30.4622+130.2000/ 北 2 鹿児島県屋久島町 4650500 2026-09-10T09:00:00+09:00 2026-09-10T12:00:00+09:00 降灰 70 +30.6437+130.1000/+30.6496+130.1200/+30.6400+130.1340/+30.6383+130.1400/+30.6200+130.1509/+30.6041+130.1600/+30.6000+130.1629/+30.5800+130.1738/+30.5607+130.1800/+30.5600+130.1806/+30.5400+130.1953/+30.5200+130.1998/+30.5197+130.2000/+30.5000+130.2173/+30.4904+130.2200/+30.4800+130.2304/+30.4600+130.2400/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2000/+30.4217+130.1800/+30.4400+130.1605/+30.4403+130.1600/+30.4457+130.1400/+30.4600+130.1232/+30.4618+130.1200/+30.4713+130.1000/+30.4800+130.0897/+30.4846+130.0800/+30.4915+130.0600/+30.5000+130.0456/+30.5039+130.0400/+30.5200+130.0211/+30.5209+130.0200/+30.5301+130.0000/+30.5349+129.9800/+30.5400+129.9724/+30.5600+129.9691/+30.5756+129.9600/+30.5800+129.9566/+30.5829+129.9600/+30.5800+129.9763/+30.5790+129.9800/+30.5768+130.0000/+30.5714+130.0200/+30.5711+130.0400/+30.5721+130.0600/+30.5689+130.0800/+30.5689+130.1000/+30.5800+130.1041/+30.6000+130.1009/+30.6200+130.1019/+30.6289+130.1000/+30.6400+130.0972/+30.6437+130.1000/ 北西 30 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4610+130.2000/+30.4705+130.2200/+30.4600+130.2304/+30.4400+130.2388/+30.4212+130.2200/+30.4330+130.2000/+30.4400+130.1928/+30.4600+130.1990/+30.4610+130.2000/ 北西 2 鹿児島県屋久島町 4650500 2026-09-10T12:00:00+09:00 2026-09-10T15:00:00+09:00 降灰 70 +30.6392+130.1200/+30.6290+130.1400/+30.6200+130.1460/+30.6104+130.1600/+30.6000+130.1694/+30.5800+130.1799/+30.5799+130.1800/+30.5600+130.1952/+30.5445+130.2000/+30.5400+130.2038/+30.5200+130.2162/+30.5000+130.2186/+30.4941+130.2200/+30.4800+130.2331/+30.4600+130.2400/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2000/+30.4219+130.1800/+30.4400+130.1618/+30.4406+130.1600/+30.4426+130.1400/+30.4545+130.1200/+30.4600+130.1132/+30.4616+130.1000/+30.4643+130.0800/+30.4724+130.0600/+30.4800+130.0476/+30.4816+130.0400/+30.4848+130.0200/+30.4941+130.0000/+30.5000+129.9878/+30.5029+129.9800/+30.5092+129.9600/+30.5150+129.9400/+30.5200+129.9315/+30.5285+129.9200/+30.5347+129.9000/+30.5400+129.8895/+30.5494+129.8800/+30.5600+129.8662/+30.5724+129.8600/+30.5800+129.8534/+30.5901+129.8600/+30.5899+129.8800/+30.5861+129.9000/+30.5816+129.9200/+30.5800+129.9279/+30.5771+129.9400/+30.5726+129.9600/+30.5690+129.9800/+30.5675+130.0000/+30.5600+130.0090/+30.5553+130.0200/+30.5518+130.0400/+30.5436+130.0600/+30.5400+130.0663/+30.5380+130.0800/+30.5397+130.1000/+30.5400+130.1014/+30.5600+130.1014/+30.5704+130.1200/+30.5800+130.1206/+30.5828+130.1200/+30.6000+130.1106/+30.6200+130.1071/+30.6392+130.1200/ 北西 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4642+130.2000/+30.4722+130.2200/+30.4600+130.2322/+30.4400+130.2388/+30.4212+130.2200/+30.4400+130.2002/+30.4474+130.2000/+30.4600+130.1957/+30.4642+130.2000/ 北 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、１０日０９時から１２時までは火口から北西方向に降灰が予想されます。 　９日２１時から１０日１５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２１時から２４時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１０日００時から０３時まで　西　　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１０日０３時から０６時まで　西　　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１０日０６時から０９時まで　北西　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１０日０９時から１２時まで　北西　　　　　　３０ｋｍ　　２ｋｍ　　　　　 　１０日１２時から１５時まで　北西　　　　　　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。