2026-09-05T23:00:00Z 通常 気象庁本庁 気象庁 2026-09-06T08:00:00+09:00 2026-09-06T09:00:00+09:00 2026-09-07T03:00:00+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、６日０９時から１２時までは火口から南西方向、６日２１時から２４時までは火口から南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 鹿児島県十島村 4630400 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 鹿児島県十島村 4630400 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 2026-09-06T09:00:00+09:00 2026-09-06T12:00:00+09:00 降灰 70 +30.4742+130.2200/+30.4600+130.2342/+30.4400+130.2397/+30.4200+130.2379/+30.4021+130.2200/+30.4000+130.2154/+30.3846+130.2000/+30.3800+130.1894/+30.3706+130.1800/+30.3600+130.1600/+30.3402+130.1400/+30.3400+130.1397/+30.3203+130.1200/+30.3200+130.1195/+30.3003+130.1000/+30.3000+130.0996/+30.2800+130.0802/+30.2798+130.0800/+30.2600+130.0609/+30.2591+130.0600/+30.2400+130.0427/+30.2326+130.0400/+30.2200+130.0378/+30.2008+130.0200/+30.2000+130.0189/+30.1845+130.0000/+30.1800+129.9907/+30.1689+129.9800/+30.1600+129.9728/+30.1415+129.9600/+30.1400+129.9587/+30.1245+129.9400/+30.1200+129.9318/+30.1082+129.9200/+30.1000+129.9128/+30.0851+129.9000/+30.0800+129.8942/+30.0666+129.8800/+30.0600+129.8714/+30.0497+129.8600/+30.0400+129.8459/+30.0348+129.8400/+30.0200+129.8222/+30.0183+129.8200/+30.0037+129.8000/+30.0000+129.7920/+29.9918+129.7800/+29.9800+129.7617/+29.9790+129.7600/+29.9696+129.7400/+29.9605+129.7200/+29.9600+129.7192/+29.9465+129.7000/+29.9444+129.6800/+29.9400+129.6606/+29.9399+129.6600/+29.9400+129.6591/+29.9581+129.6400/+29.9600+129.6397/+29.9607+129.6400/+29.9800+129.6472/+30.0000+129.6499/+30.0076+129.6600/+30.0200+129.6780/+30.0217+129.6800/+30.0400+129.6970/+30.0430+129.7000/+30.0600+129.7128/+30.0672+129.7200/+30.0800+129.7333/+30.0862+129.7400/+30.1000+129.7510/+30.1107+129.7600/+30.1200+129.7672/+30.1333+129.7800/+30.1400+129.7881/+30.1502+129.8000/+30.1600+129.8070/+30.1733+129.8200/+30.1800+129.8278/+30.1862+129.8400/+30.2000+129.8522/+30.2135+129.8600/+30.2200+129.8669/+30.2264+129.8800/+30.2380+129.9000/+30.2400+129.9032/+30.2566+129.9200/+30.2600+129.9221/+30.2790+129.9400/+30.2800+129.9409/+30.2939+129.9600/+30.2984+129.9800/+30.3000+129.9818/+30.3183+130.0000/+30.3200+130.0022/+30.3374+130.0200/+30.3400+130.0232/+30.3477+130.0200/+30.3473+130.0000/+30.3425+129.9800/+30.3400+129.9711/+30.3365+129.9600/+30.3400+129.9459/+30.3547+129.9600/+30.3600+129.9612/+30.3702+129.9800/+30.3712+130.0000/+30.3800+130.0100/+30.3870+130.0200/+30.3928+130.0400/+30.4000+130.0592/+30.4007+130.0600/+30.4137+130.0800/+30.4178+130.1000/+30.4200+130.1065/+30.4297+130.1200/+30.4371+130.1400/+30.4400+130.1556/+30.4442+130.1600/+30.4596+130.1800/+30.4600+130.2000/+30.4600+130.2025/+30.4742+130.2200/ 南西 80 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4543+130.1800/+30.4588+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4200+130.2154/+30.4046+130.2000/+30.4024+130.1800/+30.4147+130.1600/+30.4200+130.1581/+30.4217+130.1600/+30.4400+130.1657/+30.4543+130.1800/ 南西 6 鹿児島県屋久島町 4650500 2026-09-06T12:00:00+09:00 2026-09-06T15:00:00+09:00 降灰 70 +30.4641+130.2000/+30.4768+130.2200/+30.4600+130.2367/+30.4400+130.2398/+30.4200+130.2377/+30.4023+130.2200/+30.4000+130.2107/+30.3893+130.2000/+30.3801+130.1800/+30.3800+130.1798/+30.3605+130.1600/+30.3600+130.1584/+30.3418+130.1400/+30.3400+130.1358/+30.3244+130.1200/+30.3200+130.1101/+30.3100+130.1000/+30.3000+130.0809/+30.2991+130.0800/+30.2817+130.0600/+30.2800+130.0573/+30.2636+130.0400/+30.2600+130.0324/+30.2485+130.0200/+30.2400+130.0127/+30.2205+130.0000/+30.2200+129.9994/+30.2065+129.9800/+30.2000+129.9700/+30.1912+129.9600/+30.1807+129.9400/+30.1800+129.9391/+30.1628+129.9200/+30.1600+129.9149/+30.1408+129.9000/+30.1400+129.8990/+30.1298+129.8800/+30.1205+129.8600/+30.1200+129.8593/+30.1038+129.8400/+30.1000+129.8336/+30.0851+129.8200/+30.0800+129.8137/+30.0715+129.8000/+30.0602+129.7800/+30.0600+129.7796/+30.0439+129.7600/+30.0400+129.7535/+30.0321+129.7400/+30.0224+129.7200/+30.0200+129.7157/+30.0103+129.7000/+30.0027+129.6800/+30.0000+129.6769/+29.9901+129.6600/+29.9873+129.6400/+30.0000+129.6251/+30.0200+129.6393/+30.0213+129.6400/+30.0400+129.6489/+30.0568+129.6600/+30.0600+129.6618/+30.0777+129.6800/+30.0800+129.6821/+30.1000+129.6988/+30.1012+129.7000/+30.1200+129.7159/+30.1242+129.7200/+30.1400+129.7376/+30.1423+129.7400/+30.1600+129.7553/+30.1649+129.7600/+30.1800+129.7739/+30.1838+129.7800/+30.1940+129.8000/+30.2000+129.8049/+30.2200+129.8167/+30.2230+129.8200/+30.2333+129.8400/+30.2400+129.8463/+30.2533+129.8600/+30.2600+129.8693/+30.2713+129.8800/+30.2800+129.8892/+30.2913+129.9000/+30.2978+129.9200/+30.3000+129.9231/+30.3190+129.9200/+30.3194+129.9000/+30.3172+129.8800/+30.3139+129.8600/+30.3175+129.8400/+30.3200+129.8203/+30.3203+129.8200/+30.3400+129.8157/+30.3444+129.8200/+30.3600+129.8340/+30.3631+129.8400/+30.3709+129.8600/+30.3735+129.8800/+30.3780+129.9000/+30.3800+129.9031/+30.3872+129.9200/+30.3889+129.9400/+30.3921+129.9600/+30.3970+129.9800/+30.4000+129.9921/+30.4037+130.0000/+30.4111+130.0200/+30.4143+130.0400/+30.4192+130.0600/+30.4200+130.0627/+30.4286+130.0800/+30.4338+130.1000/+30.4370+130.1200/+30.4400+130.1400/+30.4400+130.1402/+30.4548+130.1600/+30.4597+130.1800/+30.4600+130.1959/+30.4641+130.2000/ +30.3425+129.9800/+30.3400+129.9825/+30.3386+129.9800/+30.3400+129.9693/+30.3425+129.9800/ +30.3207+129.9400/+30.3306+129.9600/+30.3200+129.9614/+30.3194+129.9600/+30.3198+129.9400/+30.3200+129.9294/+30.3207+129.9400/ 南西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4534+130.1800/+30.4588+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4200+130.2141/+30.4059+130.2000/+30.4038+130.1800/+30.4159+130.1600/+30.4200+130.1565/+30.4219+130.1600/+30.4400+130.1666/+30.4534+130.1800/ 南西 6 鹿児島県屋久島町 4650500 2026-09-06T15:00:00+09:00 2026-09-06T18:00:00+09:00 降灰 70 +30.4581+130.1800/+30.4599+130.2000/+30.4600+130.2200/+30.4400+130.2398/+30.4200+130.2396/+30.4003+130.2200/+30.4000+130.2198/+30.3800+130.2140/+30.3660+130.2000/+30.3600+130.1979/+30.3419+130.1800/+30.3400+130.1789/+30.3200+130.1623/+30.3177+130.1600/+30.3000+130.1540/+30.2851+130.1400/+30.2800+130.1367/+30.2607+130.1200/+30.2600+130.1195/+30.2400+130.1086/+30.2303+130.1000/+30.2200+130.0929/+30.2000+130.0870/+30.1888+130.0800/+30.1800+130.0701/+30.1677+130.0600/+30.1600+130.0529/+30.1473+130.0400/+30.1400+130.0344/+30.1231+130.0200/+30.1200+130.0150/+30.1034+130.0000/+30.1000+129.9963/+30.0859+129.9800/+30.0800+129.9726/+30.0681+129.9600/+30.0600+129.9506/+30.0497+129.9400/+30.0400+129.9273/+30.0334+129.9200/+30.0200+129.9021/+30.0186+129.9000/+30.0083+129.8800/+30.0000+129.8656/+29.9955+129.8600/+29.9830+129.8400/+29.9800+129.8341/+29.9728+129.8200/+29.9627+129.8000/+29.9602+129.7800/+29.9600+129.7792/+29.9527+129.7600/+29.9562+129.7400/+29.9600+129.7388/+29.9635+129.7400/+29.9800+129.7444/+30.0000+129.7456/+30.0122+129.7600/+30.0200+129.7676/+30.0386+129.7800/+30.0400+129.7807/+30.0600+129.7941/+30.0654+129.8000/+30.0800+129.8138/+30.0883+129.8200/+30.1000+129.8275/+30.1155+129.8400/+30.1200+129.8431/+30.1389+129.8600/+30.1400+129.8609/+30.1565+129.8800/+30.1600+129.8823/+30.1800+129.8936/+30.1874+129.9000/+30.1998+129.9200/+30.2000+129.9201/+30.2200+129.9341/+30.2264+129.9400/+30.2400+129.9524/+30.2495+129.9600/+30.2600+129.9712/+30.2649+129.9800/+30.2768+130.0000/+30.2800+130.0026/+30.2976+130.0200/+30.3000+130.0218/+30.3171+130.0400/+30.3200+130.0430/+30.3365+130.0600/+30.3400+130.0624/+30.3575+130.0800/+30.3600+130.0825/+30.3780+130.1000/+30.3800+130.1019/+30.3982+130.1200/+30.4000+130.1221/+30.4173+130.1400/+30.4200+130.1422/+30.4370+130.1600/+30.4400+130.1618/+30.4581+130.1800/ 南西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4503+130.1800/+30.4588+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4200+130.2145/+30.4039+130.2000/+30.4037+130.1800/+30.4200+130.1642/+30.4400+130.1697/+30.4503+130.1800/ 南西 4 鹿児島県屋久島町 4650500 2026-09-06T18:00:00+09:00 2026-09-06T21:00:00+09:00 降灰 70 +30.4586+130.1800/+30.4599+130.2000/+30.4599+130.2200/+30.4400+130.2399/+30.4200+130.2396/+30.4004+130.2200/+30.4000+130.2198/+30.3800+130.2016/+30.3784+130.2000/+30.3600+130.1940/+30.3459+130.1800/+30.3400+130.1762/+30.3233+130.1600/+30.3200+130.1578/+30.3015+130.1400/+30.3000+130.1386/+30.2800+130.1250/+30.2748+130.1200/+30.2600+130.1082/+30.2510+130.1000/+30.2400+130.0924/+30.2261+130.0800/+30.2200+130.0752/+30.2000+130.0700/+30.1894+130.0600/+30.1800+130.0486/+30.1714+130.0400/+30.1600+130.0297/+30.1497+130.0200/+30.1400+130.0085/+30.1303+130.0000/+30.1200+129.9907/+30.1049+129.9800/+30.1000+129.9749/+30.0900+129.9600/+30.0800+129.9450/+30.0719+129.9400/+30.0600+129.9311/+30.0490+129.9200/+30.0400+129.9091/+30.0322+129.9000/+30.0200+129.8817/+30.0189+129.8800/+30.0067+129.8600/+30.0000+129.8484/+29.9924+129.8400/+29.9800+129.8254/+29.9756+129.8200/+29.9607+129.8000/+29.9600+129.7974/+29.9508+129.7800/+29.9400+129.7701/+29.9301+129.7600/+29.9216+129.7400/+29.9400+129.7268/+29.9600+129.7332/+29.9710+129.7400/+29.9800+129.7471/+30.0000+129.7546/+30.0057+129.7600/+30.0200+129.7725/+30.0312+129.7800/+30.0400+129.7849/+30.0600+129.7991/+30.0608+129.8000/+30.0800+129.8155/+30.0874+129.8200/+30.1000+129.8264/+30.1170+129.8400/+30.1200+129.8424/+30.1376+129.8600/+30.1400+129.8621/+30.1529+129.8800/+30.1600+129.8846/+30.1800+129.8938/+30.1871+129.9000/+30.1976+129.9200/+30.2000+129.9218/+30.2200+129.9356/+30.2244+129.9400/+30.2400+129.9570/+30.2445+129.9600/+30.2600+129.9744/+30.2635+129.9800/+30.2754+130.0000/+30.2800+130.0033/+30.2971+130.0200/+30.3000+130.0224/+30.3176+130.0400/+30.3200+130.0420/+30.3375+130.0600/+30.3400+130.0624/+30.3580+130.0800/+30.3600+130.0818/+30.3776+130.1000/+30.3800+130.1024/+30.3975+130.1200/+30.4000+130.1226/+30.4169+130.1400/+30.4200+130.1426/+30.4373+130.1600/+30.4400+130.1614/+30.4586+130.1800/ +29.9132+129.7000/+29.9000+129.7184/+29.8891+129.7000/+29.9000+129.6909/+29.9132+129.7000/ 南西 80 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4471+130.1800/+30.4587+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4200+130.2128/+30.4061+130.2000/+30.4119+130.1800/+30.4200+130.1722/+30.4400+130.1729/+30.4471+130.1800/ 南西 4 鹿児島県屋久島町 4650500 2026-09-06T21:00:00+09:00 2026-09-07T00:00:00+09:00 降灰 70 +30.4576+130.1800/+30.4600+130.2000/+30.4600+130.2200/+30.4400+130.2399/+30.4200+130.2397/+30.4003+130.2200/+30.4000+130.2197/+30.3802+130.2000/+30.3800+130.1998/+30.3600+130.1833/+30.3567+130.1800/+30.3400+130.1719/+30.3279+130.1600/+30.3200+130.1535/+30.3057+130.1400/+30.3000+130.1353/+30.2839+130.1200/+30.2800+130.1160/+30.2622+130.1000/+30.2600+130.0980/+30.2420+130.0800/+30.2400+130.0779/+30.2201+130.0600/+30.2200+130.0599/+30.2000+130.0576/+30.1859+130.0400/+30.1800+130.0340/+30.1614+130.0200/+30.1600+130.0187/+30.1413+130.0000/+30.1400+129.9988/+30.1200+129.9831/+30.1145+129.9800/+30.1000+129.9665/+30.0959+129.9600/+30.0800+129.9413/+30.0772+129.9400/+30.0600+129.9279/+30.0507+129.9200/+30.0400+129.9096/+30.0313+129.9000/+30.0200+129.8829/+30.0179+129.8800/+30.0008+129.8600/+30.0000+129.8583/+29.9896+129.8400/+29.9840+129.8200/+29.9800+129.8116/+29.9707+129.8000/+29.9800+129.7941/+30.0000+129.7886/+30.0186+129.8000/+30.0200+129.8015/+30.0400+129.8108/+30.0600+129.8183/+30.0627+129.8200/+30.0800+129.8326/+30.0883+129.8400/+30.1000+129.8488/+30.1133+129.8600/+30.1200+129.8640/+30.1369+129.8800/+30.1400+129.8821/+30.1600+129.8944/+30.1708+129.9000/+30.1800+129.9082/+30.1873+129.9200/+30.2000+129.9299/+30.2117+129.9400/+30.2200+129.9458/+30.2346+129.9600/+30.2400+129.9677/+30.2524+129.9800/+30.2594+130.0000/+30.2600+130.0005/+30.2800+130.0177/+30.2823+130.0200/+30.3000+130.0335/+30.3065+130.0400/+30.3200+130.0520/+30.3279+130.0600/+30.3400+130.0713/+30.3488+130.0800/+30.3600+130.0922/+30.3678+130.1000/+30.3800+130.1094/+30.3906+130.1200/+30.4000+130.1278/+30.4122+130.1400/+30.4200+130.1456/+30.4344+130.1600/+30.4400+130.1624/+30.4576+130.1800/ 南西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4575+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4200+130.2084/+30.4106+130.2000/+30.4200+130.1857/+30.4400+130.1825/+30.4575+130.2000/ 南西 3 鹿児島県屋久島町 4650500 2026-09-07T00:00:00+09:00 2026-09-07T03:00:00+09:00 降灰 70 +30.4692+130.2200/+30.4600+130.2292/+30.4400+130.2399/+30.4200+130.2398/+30.4001+130.2200/+30.4000+130.2199/+30.3800+130.2131/+30.3667+130.2000/+30.3600+130.1979/+30.3417+130.1800/+30.3400+130.1791/+30.3200+130.1698/+30.3097+130.1600/+30.3000+130.1568/+30.2807+130.1400/+30.2800+130.1396/+30.2600+130.1322/+30.2439+130.1200/+30.2400+130.1182/+30.2200+130.1120/+30.2036+130.1000/+30.2000+130.0986/+30.1800+130.0943/+30.1600+130.0860/+30.1498+130.0800/+30.1400+130.0741/+30.1200+130.0647/+30.1055+130.0600/+30.1000+130.0580/+30.0821+130.0400/+30.0800+130.0379/+30.0600+130.0290/+30.0441+130.0200/+30.0400+130.0174/+30.0200+130.0058/+30.0136+130.0000/+30.0000+129.9815/+29.9982+129.9800/+29.9800+129.9642/+29.9755+129.9600/+29.9713+129.9400/+29.9800+129.9317/+30.0000+129.9222/+30.0200+129.9233/+30.0400+129.9240/+30.0600+129.9283/+30.0797+129.9400/+30.0800+129.9401/+30.1000+129.9479/+30.1200+129.9585/+30.1219+129.9600/+30.1400+129.9661/+30.1564+129.9800/+30.1600+129.9820/+30.1800+129.9899/+30.1992+130.0000/+30.2000+130.0003/+30.2200+130.0066/+30.2319+130.0200/+30.2400+130.0278/+30.2531+130.0400/+30.2600+130.0428/+30.2798+130.0600/+30.2800+130.0601/+30.3000+130.0674/+30.3130+130.0800/+30.3200+130.0822/+30.3391+130.1000/+30.3400+130.1003/+30.3600+130.1082/+30.3718+130.1200/+30.3800+130.1223/+30.3978+130.1400/+30.4000+130.1406/+30.4195+130.1600/+30.4200+130.1601/+30.4400+130.1713/+30.4487+130.1800/+30.4600+130.2000/+30.4600+130.2058/+30.4692+130.2200/ 南西 60 鹿児島県十島村 4630400 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4553+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4200+130.2248/+30.4152+130.2200/+30.4149+130.2000/+30.4200+130.1944/+30.4400+130.1847/+30.4553+130.2000/ 南西 3 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、６日０９時から１２時までは火口から南西方向、６日２１時から２４時までは火口から南西方向に降灰が予想されます。 　６日９時から７日３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 　０６日０９時から１２時まで　南西　　　　　　８０ｋｍ　　６ｋｍ　　　　　 　０６日１２時から１５時まで　南西　　　　　　７０ｋｍ　　６ｋｍ　　　　　 　０６日１５時から１８時まで　南西　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０６日１８時から２１時まで　南西　　　　　　８０ｋｍ　　４ｋｍ　　　　　 　０６日２１時から２４時まで　南西　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０７日００時から０３時まで　南西　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　 　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、十島村 　 　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。 　強風のため、遠方まで小さな噴石が流されるおそれがあります。