2026-09-09T08:00:00Z 通常 気象庁本庁 気象庁 2026-09-09T17:00:00+09:00 2026-09-09T18:00:00+09:00 2026-09-10T12:00:00+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 2026-09-09T18:00:00+09:00 2026-09-09T21:00:00+09:00 降灰 70 +30.5000+129.6000/+30.5048+129.6200/+30.5086+129.6400/+30.5105+129.6600/+30.5112+129.6800/+30.5076+129.7000/+30.5076+129.7200/+30.5068+129.7400/+30.5062+129.7600/+30.5087+129.7800/+30.5106+129.8000/+30.5140+129.8200/+30.5142+129.8400/+30.5128+129.8600/+30.5130+129.8800/+30.5140+129.9000/+30.5104+129.9200/+30.5111+129.9400/+30.5087+129.9600/+30.5101+129.9800/+30.5068+130.0000/+30.5010+130.0200/+30.5000+130.0221/+30.4989+130.0400/+30.4985+130.0600/+30.4976+130.0800/+30.4972+130.1000/+30.4966+130.1200/+30.4949+130.1400/+30.4908+130.1600/+30.4800+130.1732/+30.4799+130.1800/+30.4799+130.2000/+30.4797+130.2200/+30.4600+130.2397/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2146/+30.4054+130.2000/+30.4010+130.1800/+30.4008+130.1600/+30.4009+130.1400/+30.4013+130.1200/+30.4016+130.1000/+30.4023+130.0800/+30.4029+130.0600/+30.4037+130.0400/+30.4055+130.0200/+30.4082+130.0000/+30.4127+129.9800/+30.4113+129.9600/+30.4200+129.9401/+30.4200+129.9400/+30.4222+129.9200/+30.4219+129.9000/+30.4236+129.8800/+30.4255+129.8600/+30.4286+129.8400/+30.4333+129.8200/+30.4400+129.8017/+30.4409+129.8000/+30.4458+129.7800/+30.4517+129.7600/+30.4554+129.7400/+30.4591+129.7200/+30.4600+129.7151/+30.4631+129.7000/+30.4800+129.6816/+30.4832+129.6800/+30.4856+129.6600/+30.4894+129.6400/+30.4946+129.6200/+30.5000+129.6000/+30.5000+129.5999/+30.5000+129.6000/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4596+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4221+130.2000/+30.4400+130.1805/+30.4596+130.2000/ 南西 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 +30.5217+129.7000/+30.5200+129.7082/+30.5177+129.7200/+30.5141+129.7400/+30.5116+129.7600/+30.5120+129.7800/+30.5123+129.8000/+30.5118+129.8200/+30.5115+129.8400/+30.5114+129.8600/+30.5114+129.8800/+30.5107+129.9000/+30.5001+129.9200/+30.5000+129.9203/+30.4970+129.9400/+30.4971+129.9600/+30.4960+129.9800/+30.4950+130.0000/+30.4944+130.0200/+30.4939+130.0400/+30.4932+130.0600/+30.4925+130.0800/+30.4897+130.1000/+30.4840+130.1200/+30.4800+130.1275/+30.4798+130.1400/+30.4798+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+130.2076/+30.4124+130.2000/+30.4013+130.1800/+30.4008+130.1600/+30.4008+130.1400/+30.4009+130.1200/+30.4011+130.1000/+30.4013+130.0800/+30.4014+130.0600/+30.4016+130.0400/+30.4015+130.0200/+30.4015+130.0000/+30.4019+129.9800/+30.4024+129.9600/+30.4041+129.9400/+30.4063+129.9200/+30.4017+129.9000/+30.4043+129.8800/+30.4090+129.8600/+30.4115+129.8400/+30.4148+129.8200/+30.4157+129.8000/+30.4200+129.7832/+30.4210+129.7800/+30.4283+129.7600/+30.4328+129.7400/+30.4388+129.7200/+30.4400+129.7161/+30.4450+129.7000/+30.4525+129.6800/+30.4600+129.6662/+30.4648+129.6600/+30.4750+129.6400/+30.4800+129.6206/+30.4801+129.6200/+30.4842+129.6000/+30.4915+129.5800/+30.4986+129.5600/+30.5000+129.5558/+30.5016+129.5600/+30.5078+129.5800/+30.5121+129.6000/+30.5128+129.6200/+30.5134+129.6400/+30.5156+129.6600/+30.5190+129.6800/+30.5200+129.6868/+30.5217+129.7000/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4715+130.2000/+30.4600+130.2115/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4220+130.2000/+30.4400+130.1801/+30.4600+130.1839/+30.4715+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 +30.6241+130.0200/+30.6203+130.0400/+30.6200+130.0402/+30.6194+130.0400/+30.6127+130.0200/+30.6200+130.0130/+30.6241+130.0200/ +30.5824+129.8400/+30.5814+129.8600/+30.5800+129.8713/+30.5788+129.8800/+30.5780+129.9000/+30.5785+129.9200/+30.5735+129.9400/+30.5619+129.9600/+30.5600+129.9654/+30.5585+129.9800/+30.5572+130.0000/+30.5534+130.0200/+30.5400+130.0385/+30.5397+130.0400/+30.5380+130.0600/+30.5360+130.0800/+30.5306+130.1000/+30.5200+130.1132/+30.5192+130.1200/+30.5156+130.1400/+30.5000+130.1573/+30.4998+130.1600/+30.4993+130.1800/+30.4912+130.2000/+30.4800+130.2112/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2000/+30.4202+130.1800/+30.4213+130.1600/+30.4249+130.1400/+30.4361+130.1200/+30.4400+130.1144/+30.4420+130.1000/+30.4464+130.0800/+30.4528+130.0600/+30.4600+130.0478/+30.4623+130.0400/+30.4681+130.0200/+30.4733+130.0000/+30.4800+129.9904/+30.4831+129.9800/+30.4899+129.9600/+30.4964+129.9400/+30.5000+129.9312/+30.5029+129.9200/+30.5052+129.9000/+30.5131+129.8800/+30.5200+129.8643/+30.5214+129.8600/+30.5257+129.8400/+30.5317+129.8200/+30.5400+129.8077/+30.5498+129.8000/+30.5555+129.7800/+30.5600+129.7646/+30.5670+129.7800/+30.5729+129.8000/+30.5782+129.8200/+30.5800+129.8270/+30.5824+129.8400/ 西 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4706+130.2000/+30.4720+130.2200/+30.4600+130.2320/+30.4400+130.2388/+30.4212+130.2200/+30.4256+130.2000/+30.4400+130.1848/+30.4600+130.1880/+30.4706+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 +30.6800+130.0000/+30.6795+130.0200/+30.6737+130.0400/+30.6600+130.0514/+30.6541+130.0600/+30.6400+130.0735/+30.6331+130.0800/+30.6200+130.0934/+30.6137+130.1000/+30.6000+130.1122/+30.5886+130.1200/+30.5800+130.1278/+30.5660+130.1400/+30.5600+130.1455/+30.5400+130.1578/+30.5369+130.1600/+30.5200+130.1752/+30.5157+130.1800/+30.5000+130.1951/+30.4995+130.2000/+30.4800+130.2195/+30.4800+130.2200/+30.4600+130.2399/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2000/+30.4231+130.1800/+30.4400+130.1630/+30.4410+130.1600/+30.4507+130.1400/+30.4600+130.1303/+30.4620+130.1200/+30.4725+130.1000/+30.4800+130.0912/+30.4833+130.0800/+30.5000+130.0600/+30.5051+130.0400/+30.5169+130.0200/+30.5200+130.0163/+30.5268+130.0000/+30.5400+129.9810/+30.5405+129.9800/+30.5483+129.9600/+30.5596+129.9400/+30.5600+129.9388/+30.5678+129.9200/+30.5800+129.9032/+30.5820+129.9000/+30.5917+129.8800/+30.6000+129.8654/+30.6125+129.8600/+30.6200+129.8566/+30.6254+129.8600/+30.6301+129.8800/+30.6276+129.9000/+30.6230+129.9200/+30.6200+129.9384/+30.6199+129.9400/+30.6188+129.9600/+30.6163+129.9800/+30.6000+129.9966/+30.5995+130.0000/+30.6000+130.0121/+30.6200+130.0005/+30.6213+130.0000/+30.6400+129.9886/+30.6600+129.9856/+30.6800+130.0000/ 北西 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4710+130.2000/+30.4734+130.2200/+30.4600+130.2334/+30.4400+130.2388/+30.4212+130.2200/+30.4277+130.2000/+30.4400+130.1877/+30.4600+130.1889/+30.4710+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 +30.6299+130.0800/+30.6229+130.1000/+30.6200+130.1015/+30.6043+130.1200/+30.6000+130.1237/+30.5800+130.1376/+30.5769+130.1400/+30.5600+130.1536/+30.5509+130.1600/+30.5400+130.1689/+30.5200+130.1777/+30.5147+130.1800/+30.5000+130.1907/+30.4979+130.2000/+30.4800+130.2178/+30.4799+130.2200/+30.4600+130.2399/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2165/+30.4051+130.2000/+30.4073+130.1800/+30.4176+130.1600/+30.4200+130.1569/+30.4226+130.1400/+30.4294+130.1200/+30.4400+130.1018/+30.4405+130.1000/+30.4464+130.0800/+30.4565+130.0600/+30.4600+130.0526/+30.4637+130.0400/+30.4725+130.0200/+30.4800+130.0073/+30.4832+130.0000/+30.4897+129.9800/+30.5000+129.9620/+30.5014+129.9600/+30.5118+129.9400/+30.5200+129.9303/+30.5293+129.9200/+30.5349+129.9000/+30.5400+129.8897/+30.5600+129.8804/+30.5724+129.9000/+30.5730+129.9200/+30.5755+129.9400/+30.5690+129.9600/+30.5624+129.9800/+30.5600+129.9860/+30.5574+130.0000/+30.5568+130.0200/+30.5534+130.0400/+30.5517+130.0600/+30.5477+130.0800/+30.5400+130.0868/+30.5373+130.1000/+30.5400+130.1112/+30.5600+130.1011/+30.5622+130.1000/+30.5800+130.0837/+30.5857+130.0800/+30.6000+130.0706/+30.6200+130.0752/+30.6299+130.0800/ 北西 30 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4679+130.2000/+30.4704+130.2200/+30.4600+130.2304/+30.4400+130.2388/+30.4212+130.2200/+30.4307+130.2000/+30.4400+130.1905/+30.4600+130.1920/+30.4679+130.2000/ 北西 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 +30.6522+130.0800/+30.6400+130.0898/+30.6346+130.1000/+30.6200+130.1149/+30.6154+130.1200/+30.6000+130.1325/+30.5916+130.1400/+30.5800+130.1505/+30.5600+130.1599/+30.5598+130.1600/+30.5400+130.1774/+30.5365+130.1800/+30.5200+130.1956/+30.5113+130.2000/+30.5000+130.2112/+30.4930+130.2200/+30.4800+130.2330/+30.4600+130.2400/+30.4400+130.2400/+30.4200+130.2200/+30.4200+130.2000/+30.4205+130.1800/+30.4231+130.1600/+30.4346+130.1400/+30.4400+130.1327/+30.4428+130.1200/+30.4504+130.1000/+30.4600+130.0844/+30.4615+130.0800/+30.4687+130.0600/+30.4800+130.0416/+30.4808+130.0400/+30.4882+130.0200/+30.4966+130.0000/+30.5000+129.9937/+30.5090+129.9800/+30.5200+129.9637/+30.5217+129.9600/+30.5309+129.9400/+30.5400+129.9234/+30.5436+129.9200/+30.5574+129.9000/+30.5600+129.8951/+30.5728+129.8800/+30.5800+129.8668/+30.5846+129.8600/+30.6000+129.8416/+30.6187+129.8600/+30.6173+129.8800/+30.6192+129.9000/+30.6200+129.9037/+30.6229+129.9200/+30.6211+129.9400/+30.6200+129.9434/+30.6157+129.9600/+30.6094+129.9800/+30.6000+129.9960/+30.5978+130.0000/+30.5955+130.0200/+30.5947+130.0400/+30.5879+130.0600/+30.6000+130.0721/+30.6200+130.0639/+30.6400+130.0677/+30.6522+130.0800/ 北西 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4681+130.2000/+30.4750+130.2200/+30.4600+130.2350/+30.4400+130.2388/+30.4212+130.2200/+30.4333+130.2000/+30.4400+130.1930/+30.4600+130.1920/+30.4681+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、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１８時から１０日１２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　　　　　　　４０ｋｍ　　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　北西　　　　　　３０ｋｍ　　２ｋｍ　　　　　 　１０日０９時から１２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。