2026-08-09T11:00:00Z 通常 気象庁本庁 気象庁 2026-08-09T20:00:00+09:00 2026-08-09T21:00:00+09:00 2026-08-10T15:00:00+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時までは火口から北西方向、１０日０９時から１２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 2026-08-09T21:00:00+09:00 2026-08-10T00:00:00+09:00 降灰 70 +30.7053+129.6000/+30.7088+129.6200/+30.7109+129.6400/+30.7072+129.6600/+30.7000+129.6729/+30.6883+129.6800/+30.6814+129.7000/+30.6800+129.7060/+30.6775+129.7200/+30.6753+129.7400/+30.6713+129.7600/+30.6626+129.7800/+30.6600+129.7902/+30.6573+129.8000/+30.6468+129.8200/+30.6400+129.8280/+30.6355+129.8400/+30.6306+129.8600/+30.6220+129.8800/+30.6200+129.8841/+30.6140+129.9000/+30.6000+129.9186/+30.5995+129.9200/+30.5961+129.9400/+30.5811+129.9600/+30.5800+129.9611/+30.5757+129.9800/+30.5675+130.0000/+30.5600+130.0094/+30.5581+130.0200/+30.5529+130.0400/+30.5400+130.0555/+30.5392+130.0600/+30.5372+130.0800/+30.5246+130.1000/+30.5200+130.1047/+30.5188+130.1200/+30.5125+130.1400/+30.5000+130.1526/+30.4997+130.1600/+30.4992+130.1800/+30.4800+130.1996/+30.4800+130.2000/+30.4798+130.2200/+30.4600+130.2398/+30.4400+130.2399/+30.4201+130.2200/+30.4200+130.2000/+30.4202+130.1800/+30.4212+130.1600/+30.4277+130.1400/+30.4400+130.1256/+30.4406+130.1200/+30.4429+130.1000/+30.4499+130.0800/+30.4600+130.0661/+30.4612+130.0600/+30.4660+130.0400/+30.4797+130.0200/+30.4800+130.0194/+30.4834+130.0000/+30.4905+129.9800/+30.5000+129.9672/+30.5025+129.9600/+30.5083+129.9400/+30.5200+129.9229/+30.5213+129.9200/+30.5217+129.9000/+30.5350+129.8800/+30.5400+129.8737/+30.5446+129.8600/+30.5505+129.8400/+30.5600+129.8200/+30.5600+129.8199/+30.5704+129.8000/+30.5786+129.7800/+30.5800+129.7775/+30.5927+129.7600/+30.6000+129.7492/+30.6060+129.7400/+30.6190+129.7200/+30.6200+129.7179/+30.6275+129.7000/+30.6369+129.6800/+30.6400+129.6745/+30.6566+129.6600/+30.6600+129.6560/+30.6752+129.6400/+30.6800+129.6333/+30.6874+129.6200/+30.6953+129.6000/+30.7000+129.5892/+30.7053+129.6000/ 北西 70 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/+30.4229+130.2000/+30.4400+130.1820/+30.4600+130.1819/+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 +30.6688+129.7000/+30.6697+129.7200/+30.6701+129.7400/+30.6672+129.7600/+30.6601+129.7800/+30.6600+129.7803/+30.6550+129.8000/+30.6447+129.8200/+30.6400+129.8261/+30.6356+129.8400/+30.6305+129.8600/+30.6230+129.8800/+30.6200+129.8867/+30.6158+129.9000/+30.6023+129.9200/+30.6000+129.9232/+30.5970+129.9400/+30.5800+129.9589/+30.5795+129.9600/+30.5757+129.9800/+30.5703+130.0000/+30.5600+130.0126/+30.5585+130.0200/+30.5531+130.0400/+30.5400+130.0563/+30.5394+130.0600/+30.5380+130.0800/+30.5296+130.1000/+30.5200+130.1120/+30.5194+130.1200/+30.5143+130.1400/+30.5000+130.1539/+30.4997+130.1600/+30.4992+130.1800/+30.4800+130.1996/+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/+30.4228+130.1600/+30.4400+130.1414/+30.4402+130.1400/+30.4417+130.1200/+30.4482+130.1000/+30.4600+130.0857/+30.4608+130.0800/+30.4653+130.0600/+30.4800+130.0411/+30.4803+130.0400/+30.4839+130.0200/+30.4949+130.0000/+30.5000+129.9927/+30.5026+129.9800/+30.5109+129.9600/+30.5200+129.9482/+30.5229+129.9400/+30.5279+129.9200/+30.5343+129.9000/+30.5400+129.8937/+30.5450+129.8800/+30.5516+129.8600/+30.5600+129.8431/+30.5621+129.8400/+30.5717+129.8200/+30.5800+129.8020/+30.5811+129.8000/+30.5922+129.7800/+30.6000+129.7719/+30.6115+129.7600/+30.6200+129.7401/+30.6201+129.7400/+30.6353+129.7200/+30.6400+129.7070/+30.6479+129.7000/+30.6600+129.6919/+30.6688+129.7000/ 北西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4761+130.2000/+30.4710+130.2200/+30.4600+130.2310/+30.4400+130.2388/+30.4212+130.2200/+30.4226+130.2000/+30.4400+130.1822/+30.4600+130.1825/+30.4761+130.2000/ 北西 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 +30.6023+129.6400/+30.6119+129.6600/+30.6146+129.6800/+30.6161+129.7000/+30.6149+129.7200/+30.6130+129.7400/+30.6107+129.7600/+30.6041+129.7800/+30.6000+129.7897/+30.5975+129.8000/+30.5938+129.8200/+30.5913+129.8400/+30.5856+129.8600/+30.5800+129.8761/+30.5789+129.8800/+30.5740+129.9000/+30.5691+129.9200/+30.5600+129.9305/+30.5559+129.9400/+30.5491+129.9600/+30.5410+129.9800/+30.5400+129.9816/+30.5374+130.0000/+30.5331+130.0200/+30.5247+130.0400/+30.5200+130.0470/+30.5189+130.0600/+30.5169+130.0800/+30.5113+130.1000/+30.5000+130.1167/+30.4999+130.1200/+30.4999+130.1400/+30.4977+130.1600/+30.4840+130.1800/+30.4800+130.1844/+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/+30.4204+130.1400/+30.4211+130.1200/+30.4228+130.1000/+30.4263+130.0800/+30.4371+130.0600/+30.4400+130.0553/+30.4416+130.0400/+30.4449+130.0200/+30.4481+130.0000/+30.4576+129.9800/+30.4600+129.9744/+30.4622+129.9600/+30.4672+129.9400/+30.4732+129.9200/+30.4779+129.9000/+30.4800+129.8966/+30.4845+129.8800/+30.4911+129.8600/+30.4990+129.8400/+30.5000+129.8378/+30.5079+129.8200/+30.5177+129.8000/+30.5200+129.7956/+30.5253+129.7800/+30.5331+129.7600/+30.5397+129.7400/+30.5400+129.7392/+30.5495+129.7200/+30.5600+129.7073/+30.5726+129.7000/+30.5800+129.6865/+30.5831+129.6800/+30.5910+129.6600/+30.5990+129.6400/+30.6000+129.6380/+30.6023+129.6400/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4743+130.2000/+30.4600+130.2143/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4230+130.2000/+30.4400+130.1812/+30.4600+130.1828/+30.4743+130.2000/ 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 +30.6213+129.6000/+30.6214+129.6200/+30.6215+129.6400/+30.6211+129.6600/+30.6203+129.6800/+30.6200+129.6897/+30.6197+129.7000/+30.6143+129.7200/+30.6050+129.7400/+30.6000+129.7481/+30.5956+129.7600/+30.5924+129.7800/+30.5901+129.8000/+30.5874+129.8200/+30.5800+129.8352/+30.5780+129.8400/+30.5735+129.8600/+30.5710+129.8800/+30.5676+129.9000/+30.5612+129.9200/+30.5600+129.9211/+30.5443+129.9400/+30.5400+129.9468/+30.5384+129.9600/+30.5358+129.9800/+30.5323+130.0000/+30.5200+130.0190/+30.5199+130.0200/+30.5186+130.0400/+30.5168+130.0600/+30.5126+130.0800/+30.5000+130.0944/+30.4996+130.1000/+30.4992+130.1200/+30.4985+130.1400/+30.4946+130.1600/+30.4800+130.1755/+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/+30.4204+130.1400/+30.4212+130.1200/+30.4236+130.1000/+30.4278+130.0800/+30.4400+130.0604/+30.4400+130.0600/+30.4415+130.0400/+30.4436+130.0200/+30.4468+130.0000/+30.4539+129.9800/+30.4600+129.9703/+30.4619+129.9600/+30.4659+129.9400/+30.4701+129.9200/+30.4692+129.9000/+30.4800+129.8806/+30.4801+129.8800/+30.4845+129.8600/+30.4897+129.8400/+30.4969+129.8200/+30.4986+129.8000/+30.5000+129.7955/+30.5061+129.7800/+30.5200+129.7602/+30.5201+129.7600/+30.5274+129.7400/+30.5350+129.7200/+30.5400+129.7001/+30.5401+129.7000/+30.5525+129.6800/+30.5600+129.6678/+30.5648+129.6600/+30.5737+129.6400/+30.5800+129.6234/+30.5812+129.6200/+30.5883+129.6000/+30.5970+129.5800/+30.6000+129.5742/+30.6094+129.5800/+30.6200+129.5960/+30.6213+129.6000/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4740+130.2000/+30.4600+130.2140/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4227+130.2000/+30.4400+130.1813/+30.4600+130.1824/+30.4740+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-10T09:00:00+09:00 2026-08-10T12:00:00+09:00 降灰 70 +30.6230+129.7000/+30.6219+129.7200/+30.6210+129.7400/+30.6200+129.7441/+30.6171+129.7600/+30.6116+129.7800/+30.6037+129.8000/+30.6000+129.8056/+30.5949+129.8200/+30.5905+129.8400/+30.5845+129.8600/+30.5800+129.8694/+30.5758+129.8800/+30.5705+129.9000/+30.5664+129.9200/+30.5600+129.9262/+30.5522+129.9400/+30.5420+129.9600/+30.5400+129.9632/+30.5380+129.9800/+30.5349+130.0000/+30.5271+130.0200/+30.5200+130.0295/+30.5190+130.0400/+30.5178+130.0600/+30.5142+130.0800/+30.5000+130.0970/+30.4997+130.1000/+30.4992+130.1200/+30.4985+130.1400/+30.4946+130.1600/+30.4800+130.1752/+30.4799+130.1800/+30.4799+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/+30.4229+130.1200/+30.4307+130.1000/+30.4400+130.0882/+30.4407+130.0800/+30.4424+130.0600/+30.4450+130.0400/+30.4518+130.0200/+30.4600+130.0074/+30.4614+130.0000/+30.4647+129.9800/+30.4725+129.9600/+30.4800+129.9480/+30.4819+129.9400/+30.4851+129.9200/+30.4870+129.9000/+30.4933+129.8800/+30.5000+129.8668/+30.5036+129.8600/+30.5117+129.8400/+30.5200+129.8217/+30.5206+129.8200/+30.5283+129.8000/+30.5337+129.7800/+30.5400+129.7625/+30.5410+129.7600/+30.5501+129.7400/+30.5600+129.7266/+30.5655+129.7200/+30.5789+129.7000/+30.5800+129.6974/+30.5883+129.6800/+30.6000+129.6612/+30.6189+129.6800/+30.6200+129.6834/+30.6230+129.7000/ 西 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4711+130.2000/+30.4600+130.2111/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4238+130.2000/+30.4400+130.1825/+30.4600+130.1857/+30.4711+130.2000/ 西 2 鹿児島県屋久島町 4650500 2026-08-10T12:00:00+09:00 2026-08-10T15:00:00+09:00 降灰 70 +30.6035+129.7400/+30.6071+129.7600/+30.6047+129.7800/+30.6021+129.8000/+30.6000+129.8048/+30.5941+129.8200/+30.5932+129.8400/+30.5859+129.8600/+30.5800+129.8776/+30.5792+129.8800/+30.5738+129.9000/+30.5700+129.9200/+30.5600+129.9294/+30.5543+129.9400/+30.5473+129.9600/+30.5400+129.9707/+30.5390+129.9800/+30.5363+130.0000/+30.5318+130.0200/+30.5200+130.0342/+30.5193+130.0400/+30.5175+130.0600/+30.5119+130.0800/+30.5000+130.0945/+30.4996+130.1000/+30.4992+130.1200/+30.4981+130.1400/+30.4923+130.1600/+30.4800+130.1731/+30.4799+130.1800/+30.4799+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/+30.4203+130.1600/+30.4209+130.1400/+30.4252+130.1200/+30.4400+130.1034/+30.4404+130.1000/+30.4414+130.0800/+30.4440+130.0600/+30.4544+130.0400/+30.4600+130.0331/+30.4619+130.0200/+30.4656+130.0000/+30.4800+129.9800/+30.4840+129.9600/+30.4910+129.9400/+30.5000+129.9261/+30.5016+129.9200/+30.5007+129.9000/+30.5113+129.8800/+30.5195+129.8600/+30.5200+129.8590/+30.5267+129.8400/+30.5400+129.8203/+30.5403+129.8200/+30.5485+129.8000/+30.5600+129.7816/+30.5697+129.7800/+30.5800+129.7761/+30.5894+129.7600/+30.5966+129.7400/+30.6000+129.7333/+30.6035+129.7400/ 西 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4622+130.2000/+30.4600+130.2022/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4252+130.2000/+30.4400+130.1842/+30.4600+130.1972/+30.4622+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、１０日０９時から１２時までは火口から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　北西　　　　　　７０ｋｍ　　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　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１０日０６時から０９時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１０日０９時から１２時まで　西　　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１０日１２時から１５時まで　西　　　　　　　５０ｋｍ　　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。