2026-08-09T05:00:00Z 通常 気象庁本庁 気象庁 2026-08-09T14:00:00+09:00 2026-08-09T15:00:00+09:00 2026-08-10T09:00:00+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 2026-08-09T15:00:00+09:00 2026-08-09T18:00:00+09:00 降灰 70 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西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4756+130.2000/+30.4600+130.2156/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4221+130.2000/+30.4400+130.1811/+30.4600+130.1811/+30.4756+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-09T18:00:00+09:00 2026-08-09T21:00:00+09:00 降灰 70 +30.6407+129.6000/+30.6400+129.6013/+30.6288+129.6200/+30.6266+129.6400/+30.6258+129.6600/+30.6254+129.6800/+30.6251+129.7000/+30.6227+129.7200/+30.6200+129.7307/+30.6182+129.7400/+30.6151+129.7600/+30.6067+129.7800/+30.6000+129.7903/+30.5962+129.8000/+30.5924+129.8200/+30.5880+129.8400/+30.5809+129.8600/+30.5800+129.8623/+30.5754+129.8800/+30.5716+129.9000/+30.5683+129.9200/+30.5600+129.9285/+30.5544+129.9400/+30.5483+129.9600/+30.5400+129.9755/+30.5393+129.9800/+30.5362+130.0000/+30.5326+130.0200/+30.5200+130.0383/+30.5198+130.0400/+30.5186+130.0600/+30.5162+130.0800/+30.5061+130.1000/+30.5000+130.1070/+30.4995+130.1200/+30.4990+130.1400/+30.4974+130.1600/+30.4800+130.1794/+30.4800+130.1800/+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/+30.4205+130.1400/+30.4212+130.1200/+30.4236+130.1000/+30.4288+130.0800/+30.4400+130.0628/+30.4403+130.0600/+30.4417+130.0400/+30.4434+130.0200/+30.4493+130.0000/+30.4570+129.9800/+30.4600+129.9752/+30.4625+129.9600/+30.4673+129.9400/+30.4719+129.9200/+30.4744+129.9000/+30.4800+129.8904/+30.4821+129.8800/+30.4872+129.8600/+30.4940+129.8400/+30.5000+129.8260/+30.5028+129.8200/+30.5050+129.8000/+30.5139+129.7800/+30.5200+129.7710/+30.5246+129.7600/+30.5310+129.7400/+30.5395+129.7200/+30.5400+129.7187/+30.5541+129.7000/+30.5600+129.6881/+30.5641+129.6800/+30.5728+129.6600/+30.5800+129.6403/+30.5801+129.6400/+30.5873+129.6200/+30.5948+129.6000/+30.6000+129.5895/+30.6200+129.5905/+30.6400+129.5959/+30.6407+129.6000/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4761+130.2000/+30.4600+130.2161/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4220+130.2000/+30.4400+130.1809/+30.4600+130.1814/+30.4761+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-09T21:00:00+09:00 2026-08-10T00:00:00+09:00 降灰 70 +30.6706+129.6400/+30.6728+129.6600/+30.6712+129.6800/+30.6702+129.7000/+30.6653+129.7200/+30.6600+129.7386/+30.6594+129.7400/+30.6533+129.7600/+30.6422+129.7800/+30.6400+129.7827/+30.6343+129.8000/+30.6302+129.8200/+30.6261+129.8400/+30.6200+129.8501/+30.6140+129.8600/+30.6021+129.8800/+30.6000+129.8825/+30.5961+129.9000/+30.5920+129.9200/+30.5870+129.9400/+30.5800+129.9471/+30.5704+129.9600/+30.5600+129.9729/+30.5587+129.9800/+30.5562+130.0000/+30.5467+130.0200/+30.5400+130.0276/+30.5386+130.0400/+30.5366+130.0600/+30.5243+130.0800/+30.5200+130.0845/+30.5190+130.1000/+30.5165+130.1200/+30.5000+130.1374/+30.4998+130.1400/+30.4996+130.1600/+30.4982+130.1800/+30.4800+130.1984/+30.4800+130.2000/+30.4798+130.2200/+30.4600+130.2398/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4217+130.1600/+30.4400+130.1406/+30.4401+130.1400/+30.4407+130.1200/+30.4428+130.1000/+30.4538+130.0800/+30.4600+130.0730/+30.4614+130.0600/+30.4653+130.0400/+30.4784+130.0200/+30.4800+130.0182/+30.4829+130.0000/+30.4879+129.9800/+30.5000+129.9614/+30.5003+129.9600/+30.5034+129.9400/+30.5126+129.9200/+30.5106+129.9000/+30.5200+129.8806/+30.5202+129.8800/+30.5281+129.8600/+30.5400+129.8429/+30.5411+129.8400/+30.5477+129.8200/+30.5556+129.8000/+30.5600+129.7937/+30.5653+129.7800/+30.5736+129.7600/+30.5800+129.7409/+30.5804+129.7400/+30.5910+129.7200/+30.6000+129.7063/+30.6095+129.7000/+30.6200+129.6834/+30.6218+129.6800/+30.6303+129.6600/+30.6388+129.6400/+30.6400+129.6378/+30.6600+129.6270/+30.6706+129.6400/ 北西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4753+130.2000/+30.4600+130.2153/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4223+130.2000/+30.4400+130.1819/+30.4600+130.1815/+30.4753+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-10T00:00:00+09:00 2026-08-10T03:00:00+09:00 降灰 70 +30.6691+129.6600/+30.6695+129.6800/+30.6697+129.7000/+30.6658+129.7200/+30.6620+129.7400/+30.6600+129.7463/+30.6573+129.7600/+30.6483+129.7800/+30.6400+129.7915/+30.6363+129.8000/+30.6312+129.8200/+30.6273+129.8400/+30.6200+129.8540/+30.6172+129.8600/+30.6089+129.8800/+30.6000+129.8922/+30.5982+129.9000/+30.5945+129.9200/+30.5909+129.9400/+30.5800+129.9517/+30.5755+129.9600/+30.5628+129.9800/+30.5600+129.9835/+30.5576+130.0000/+30.5529+130.0200/+30.5400+130.0362/+30.5394+130.0400/+30.5374+130.0600/+30.5287+130.0800/+30.5200+130.0895/+30.5191+130.1000/+30.5170+130.1200/+30.5000+130.1386/+30.4999+130.1400/+30.4996+130.1600/+30.4983+130.1800/+30.4800+130.1986/+30.4800+130.2000/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4202+130.1800/+30.4219+130.1600/+30.4400+130.1412/+30.4402+130.1400/+30.4410+130.1200/+30.4439+130.1000/+30.4600+130.0811/+30.4602+130.0800/+30.4623+130.0600/+30.4692+130.0400/+30.4800+130.0268/+30.4813+130.0200/+30.4854+130.0000/+30.4993+129.9800/+30.5000+129.9791/+30.5038+129.9600/+30.5100+129.9400/+30.5200+129.9260/+30.5220+129.9200/+30.5200+129.9039/+30.5180+129.9000/+30.5200+129.8961/+30.5277+129.8800/+30.5400+129.8669/+30.5436+129.8600/+30.5485+129.8400/+30.5564+129.8200/+30.5600+129.8134/+30.5673+129.8000/+30.5730+129.7800/+30.5800+129.7605/+30.5802+129.7600/+30.5916+129.7400/+30.6000+129.7282/+30.6157+129.7200/+30.6200+129.7157/+30.6282+129.7000/+30.6339+129.6800/+30.6396+129.6600/+30.6400+129.6591/+30.6600+129.6440/+30.6691+129.6600/ 北西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4751+130.2000/+30.4600+130.2187/+30.4598+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4229+130.2000/+30.4400+130.1825/+30.4600+130.1831/+30.4751+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-10T03:00:00+09:00 2026-08-10T06:00:00+09:00 降灰 70 +30.6610+129.7000/+30.6600+129.7043/+30.6503+129.7200/+30.6458+129.7400/+30.6468+129.7600/+30.6400+129.7745/+30.6374+129.7800/+30.6323+129.8000/+30.6268+129.8200/+30.6218+129.8400/+30.6200+129.8431/+30.6104+129.8600/+30.6000+129.8757/+30.5986+129.8800/+30.5943+129.9000/+30.5903+129.9200/+30.5847+129.9400/+30.5800+129.9449/+30.5705+129.9600/+30.5600+129.9744/+30.5586+129.9800/+30.5553+130.0000/+30.5441+130.0200/+30.5400+130.0244/+30.5378+130.0400/+30.5351+130.0600/+30.5223+130.0800/+30.5200+130.0832/+30.5192+130.1000/+30.5198+130.1200/+30.5074+130.1400/+30.5000+130.1475/+30.4996+130.1600/+30.4973+130.1800/+30.4800+130.1978/+30.4800+130.2000/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4205+130.1600/+30.4223+130.1400/+30.4332+130.1200/+30.4400+130.1122/+30.4411+130.1000/+30.4436+130.0800/+30.4518+130.0600/+30.4600+130.0481/+30.4613+130.0400/+30.4648+130.0200/+30.4735+130.0000/+30.4800+129.9906/+30.4831+129.9800/+30.4890+129.9600/+30.5000+129.9403/+30.5001+129.9400/+30.5076+129.9200/+30.5086+129.9000/+30.5182+129.8800/+30.5200+129.8765/+30.5275+129.8600/+30.5400+129.8424/+30.5414+129.8400/+30.5502+129.8200/+30.5600+129.8027/+30.5624+129.8000/+30.5712+129.7800/+30.5800+129.7617/+30.5808+129.7600/+30.5911+129.7400/+30.6000+129.7271/+30.6200+129.7216/+30.6252+129.7200/+30.6337+129.7000/+30.6400+129.6869/+30.6600+129.6942/+30.6610+129.7000/ 北西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4753+130.2000/+30.4728+130.2200/+30.4600+130.2328/+30.4400+130.2388/+30.4212+130.2200/+30.4233+130.2000/+30.4400+130.1826/+30.4600+130.1831/+30.4753+130.2000/ 北西 2 鹿児島県屋久島町 4650500 2026-08-10T06:00:00+09:00 2026-08-10T09:00:00+09:00 降灰 70 +30.6616+129.6000/+30.6600+129.6094/+30.6542+129.6200/+30.6490+129.6400/+30.6436+129.6600/+30.6400+129.6724/+30.6380+129.6800/+30.6356+129.7000/+30.6305+129.7200/+30.6270+129.7400/+30.6217+129.7600/+30.6200+129.7683/+30.6174+129.7800/+30.6118+129.8000/+30.6006+129.8200/+30.6000+129.8207/+30.5958+129.8400/+30.5903+129.8600/+30.5850+129.8800/+30.5800+129.8919/+30.5778+129.9000/+30.5735+129.9200/+30.5600+129.9333/+30.5571+129.9400/+30.5537+129.9600/+30.5444+129.9800/+30.5400+129.9854/+30.5378+130.0000/+30.5354+130.0200/+30.5293+130.0400/+30.5200+130.0515/+30.5192+130.0600/+30.5179+130.0800/+30.5135+130.1000/+30.5000+130.1143/+30.4996+130.1200/+30.4993+130.1400/+30.4981+130.1600/+30.4800+130.1799/+30.4800+130.1800/+30.4800+130.2000/+30.4798+130.2200/+30.4600+130.2398/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4201+130.1800/+30.4202+130.1600/+30.4208+130.1400/+30.4230+130.1200/+30.4324+130.1000/+30.4400+130.0888/+30.4406+130.0800/+30.4423+130.0600/+30.4456+130.0400/+30.4548+130.0200/+30.4600+130.0109/+30.4615+130.0000/+30.4650+129.9800/+30.4714+129.9600/+30.4800+129.9438/+30.4809+129.9400/+30.4853+129.9200/+30.4863+129.9000/+30.4926+129.8800/+30.5000+129.8660/+30.5029+129.8600/+30.5086+129.8400/+30.5157+129.8200/+30.5200+129.8111/+30.5242+129.8000/+30.5307+129.7800/+30.5400+129.7600/+30.5479+129.7400/+30.5600+129.7224/+30.5620+129.7200/+30.5714+129.7000/+30.5798+129.6800/+30.5800+129.6796/+30.5904+129.6600/+30.6000+129.6429/+30.6121+129.6400/+30.6200+129.6353/+30.6293+129.6200/+30.6332+129.6000/+30.6400+129.5826/+30.6600+129.5870/+30.6616+129.6000/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4738+130.2000/+30.4600+130.2138/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4231+130.2000/+30.4400+130.1821/+30.4600+130.1834/+30.4738+130.2000/ 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時までは火口から北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　　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　０９日１８時から２１時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　０９日２１時から２４時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１０日００時から０３時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１０日０３時から０６時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１０日０６時から０９時まで　西　　　　　　　６０ｋｍ　　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。