2026-07-29T17:00:00Z 通常 気象庁本庁 気象庁 2026-07-30T02:00:00+09:00 2026-07-30T03:00:00+09:00 2026-07-30T21:00:00+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、３０日０９時から１２時までは火口から南東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 2026-07-30T03:00:00+09:00 2026-07-30T06:00:00+09:00 降灰 70 +30.4785+130.2200/+30.4600+130.2400/+30.4594+130.2600/+30.4400+130.2795/+30.4397+130.2800/+30.4363+130.3000/+30.4200+130.3172/+30.4192+130.3200/+30.4131+130.3400/+30.4000+130.3548/+30.3983+130.3600/+30.3900+130.3800/+30.3913+130.4000/+30.3800+130.4167/+30.3787+130.4200/+30.3797+130.4400/+30.3800+130.4405/+30.3929+130.4600/+30.3874+130.4800/+30.3876+130.5000/+30.3889+130.5200/+30.3936+130.5400/+30.3871+130.5600/+30.3800+130.5681/+30.3600+130.5796/+30.3515+130.5800/+30.3400+130.5868/+30.3329+130.5800/+30.3200+130.5792/+30.3000+130.5664/+30.2909+130.5600/+30.2824+130.5400/+30.2804+130.5200/+30.2800+130.5184/+30.2692+130.5000/+30.2600+130.4916/+30.2400+130.4830/+30.2200+130.4880/+30.2000+130.4849/+30.1953+130.4800/+30.1937+130.4600/+30.1986+130.4400/+30.2000+130.4371/+30.2073+130.4200/+30.2142+130.4000/+30.2200+130.3954/+30.2397+130.3800/+30.2400+130.3797/+30.2600+130.3635/+30.2659+130.3600/+30.2800+130.3504/+30.2868+130.3400/+30.3000+130.3274/+30.3059+130.3200/+30.3200+130.3065/+30.3266+130.3000/+30.3400+130.2877/+30.3468+130.2800/+30.3600+130.2669/+30.3642+130.2600/+30.3800+130.2444/+30.3814+130.2400/+30.4000+130.2214/+30.4002+130.2200/+30.4200+130.2002/+30.4355+130.2000/+30.4400+130.1955/+30.4451+130.2000/+30.4600+130.2013/+30.4785+130.2200/ +30.2799+130.4400/+30.2600+130.4426/+30.2544+130.4400/+30.2600+130.4386/+30.2799+130.4400/ 南東 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4492+130.2400/+30.4400+130.2503/+30.4284+130.2400/+30.4210+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-30T06:00:00+09:00 2026-07-30T09:00:00+09:00 降灰 70 +30.4772+130.2200/+30.4600+130.2376/+30.4600+130.2400/+30.4586+130.2600/+30.4400+130.2786/+30.4393+130.2800/+30.4200+130.2994/+30.4195+130.3000/+30.4066+130.3200/+30.4000+130.3267/+30.3954+130.3400/+30.3800+130.3557/+30.3773+130.3600/+30.3600+130.3778/+30.3572+130.3800/+30.3400+130.3979/+30.3373+130.4000/+30.3234+130.4200/+30.3200+130.4235/+30.3000+130.4376/+30.2847+130.4400/+30.2800+130.4490/+30.2767+130.4600/+30.2712+130.4800/+30.2600+130.4892/+30.2400+130.4999/+30.2399+130.5000/+30.2200+130.5146/+30.2107+130.5200/+30.2012+130.5400/+30.2000+130.5425/+30.1917+130.5600/+30.1839+130.5800/+30.1800+130.5877/+30.1721+130.6000/+30.1600+130.6175/+30.1431+130.6200/+30.1400+130.6206/+30.1388+130.6200/+30.1219+130.6000/+30.1214+130.5800/+30.1206+130.5600/+30.1286+130.5400/+30.1338+130.5200/+30.1400+130.5071/+30.1446+130.5000/+30.1600+130.4845/+30.1641+130.4800/+30.1800+130.4638/+30.1816+130.4600/+30.1915+130.4400/+30.2000+130.4281/+30.2042+130.4200/+30.2192+130.4000/+30.2200+130.3992/+30.2400+130.3912/+30.2600+130.3801/+30.2601+130.3800/+30.2800+130.3622/+30.2827+130.3600/+30.3000+130.3430/+30.3024+130.3400/+30.3200+130.3227/+30.3220+130.3200/+30.3400+130.3020/+30.3411+130.3000/+30.3600+130.2809/+30.3603+130.2800/+30.3768+130.2600/+30.3800+130.2568/+30.3817+130.2400/+30.4000+130.2217/+30.4002+130.2200/+30.4200+130.2002/+30.4400+130.2000/+30.4600+130.2026/+30.4772+130.2200/ 南東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4443+130.2400/+30.4400+130.2443/+30.4317+130.2400/+30.4204+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-30T09:00:00+09:00 2026-07-30T12:00:00+09:00 降灰 70 +30.4777+130.2200/+30.4600+130.2380/+30.4600+130.2400/+30.4585+130.2600/+30.4400+130.2785/+30.4391+130.2800/+30.4200+130.2995/+30.4195+130.3000/+30.4097+130.3200/+30.4000+130.3300/+30.3941+130.3400/+30.3800+130.3549/+30.3744+130.3600/+30.3600+130.3736/+30.3467+130.3800/+30.3400+130.3868/+30.3200+130.3993/+30.3191+130.4000/+30.3000+130.4188/+30.2979+130.4200/+30.2800+130.4341/+30.2632+130.4400/+30.2600+130.4446/+30.2454+130.4600/+30.2400+130.4661/+30.2317+130.4800/+30.2200+130.4953/+30.2140+130.5000/+30.2000+130.5127/+30.1915+130.5200/+30.1842+130.5400/+30.1800+130.5508/+30.1765+130.5600/+30.1657+130.5800/+30.1600+130.5877/+30.1400+130.5909/+30.1286+130.5800/+30.1200+130.5715/+30.1152+130.5600/+30.1200+130.5467/+30.1229+130.5400/+30.1276+130.5200/+30.1389+130.5000/+30.1400+130.4981/+30.1506+130.4800/+30.1600+130.4705/+30.1669+130.4600/+30.1800+130.4450/+30.1821+130.4400/+30.1892+130.4200/+30.2000+130.4072/+30.2051+130.4000/+30.2200+130.3881/+30.2349+130.3800/+30.2400+130.3751/+30.2600+130.3625/+30.2632+130.3600/+30.2800+130.3442/+30.2842+130.3400/+30.3000+130.3250/+30.3047+130.3200/+30.3200+130.3052/+30.3262+130.3000/+30.3400+130.2866/+30.3462+130.2800/+30.3600+130.2663/+30.3636+130.2600/+30.3800+130.2437/+30.3810+130.2400/+30.4000+130.2210/+30.4001+130.2200/+30.4200+130.2001/+30.4309+130.2000/+30.4400+130.1909/+30.4501+130.2000/+30.4600+130.2019/+30.4777+130.2200/ 南東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4400+130.2399/+30.4204+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 南東 1 鹿児島県屋久島町 4650500 2026-07-30T12:00:00+09:00 2026-07-30T15:00:00+09:00 降灰 70 +30.4775+130.2200/+30.4600+130.2376/+30.4600+130.2400/+30.4512+130.2600/+30.4400+130.2712/+30.4339+130.2800/+30.4200+130.2939/+30.4139+130.3000/+30.4000+130.3139/+30.3933+130.3200/+30.3800+130.3335/+30.3702+130.3400/+30.3600+130.3502/+30.3403+130.3600/+30.3400+130.3603/+30.3200+130.3767/+30.3096+130.3800/+30.3000+130.3891/+30.2830+130.4000/+30.2800+130.4030/+30.2642+130.4200/+30.2600+130.4239/+30.2476+130.4400/+30.2400+130.4492/+30.2271+130.4600/+30.2200+130.4697/+30.2079+130.4800/+30.2000+130.4876/+30.1881+130.5000/+30.1800+130.5131/+30.1750+130.5200/+30.1616+130.5400/+30.1600+130.5417/+30.1400+130.5492/+30.1250+130.5600/+30.1200+130.5638/+30.1091+130.5600/+30.1042+130.5400/+30.1017+130.5200/+30.1106+130.5000/+30.1200+130.4815/+30.1205+130.4800/+30.1303+130.4600/+30.1400+130.4459/+30.1435+130.4400/+30.1595+130.4200/+30.1600+130.4195/+30.1800+130.4016/+30.1808+130.4000/+30.1935+130.3800/+30.2000+130.3739/+30.2200+130.3701/+30.2301+130.3600/+30.2400+130.3505/+30.2600+130.3405/+30.2606+130.3400/+30.2800+130.3224/+30.2836+130.3200/+30.3000+130.3053/+30.3106+130.3000/+30.3200+130.2908/+30.3400+130.2803/+30.3403+130.2800/+30.3600+130.2610/+30.3608+130.2600/+30.3800+130.2409/+30.3804+130.2400/+30.4000+130.2204/+30.4001+130.2200/+30.4200+130.2001/+30.4280+130.2000/+30.4400+130.1880/+30.4532+130.2000/+30.4600+130.2020/+30.4775+130.2200/ 南東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4400+130.2398/+30.4202+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 南東 1 鹿児島県屋久島町 4650500 2026-07-30T15:00:00+09:00 2026-07-30T18:00:00+09:00 降灰 70 +30.4768+130.2200/+30.4600+130.2369/+30.4599+130.2400/+30.4400+130.2599/+30.4398+130.2600/+30.4200+130.2798/+30.4195+130.2800/+30.4000+130.2995/+30.3986+130.3000/+30.3800+130.3186/+30.3765+130.3200/+30.3600+130.3364/+30.3508+130.3400/+30.3400+130.3501/+30.3200+130.3589/+30.3171+130.3600/+30.3000+130.3751/+30.2800+130.3798/+30.2796+130.3800/+30.2600+130.3990/+30.2586+130.4000/+30.2400+130.4154/+30.2351+130.4200/+30.2236+130.4400/+30.2200+130.4433/+30.2000+130.4541/+30.1888+130.4600/+30.1800+130.4697/+30.1688+130.4800/+30.1600+130.4910/+30.1412+130.5000/+30.1400+130.5007/+30.1200+130.5144/+30.1069+130.5200/+30.1000+130.5242/+30.0800+130.5300/+30.0696+130.5200/+30.0742+130.5000/+30.0800+130.4887/+30.0834+130.4800/+30.0946+130.4600/+30.1000+130.4427/+30.1006+130.4400/+30.1185+130.4200/+30.1200+130.4189/+30.1355+130.4000/+30.1400+130.3953/+30.1574+130.3800/+30.1600+130.3779/+30.1800+130.3653/+30.1842+130.3600/+30.2000+130.3482/+30.2200+130.3424/+30.2236+130.3400/+30.2400+130.3262/+30.2586+130.3200/+30.2600+130.3189/+30.2800+130.3027/+30.2862+130.3000/+30.3000+130.2876/+30.3200+130.2804/+30.3207+130.2800/+30.3400+130.2623/+30.3454+130.2600/+30.3600+130.2456/+30.3774+130.2400/+30.3800+130.2374/+30.4000+130.2201/+30.4001+130.2200/+30.4200+130.2001/+30.4265+130.2000/+30.4400+130.1865/+30.4546+130.2000/+30.4600+130.2025/+30.4768+130.2200/ 南東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4400+130.2397/+30.4204+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 南東 1 鹿児島県屋久島町 4650500 2026-07-30T18:00:00+09:00 2026-07-30T21:00:00+09:00 降灰 70 +30.4767+130.2200/+30.4600+130.2370/+30.4599+130.2400/+30.4400+130.2599/+30.4398+130.2600/+30.4200+130.2799/+30.4198+130.2800/+30.4010+130.3000/+30.4000+130.3010/+30.3830+130.3200/+30.3800+130.3231/+30.3647+130.3400/+30.3600+130.3450/+30.3409+130.3600/+30.3400+130.3609/+30.3200+130.3797/+30.3193+130.3800/+30.3067+130.4000/+30.3000+130.4094/+30.2855+130.4200/+30.2800+130.4230/+30.2600+130.4371/+30.2537+130.4400/+30.2400+130.4578/+30.2362+130.4600/+30.2200+130.4760/+30.2149+130.4800/+30.2000+130.4912/+30.1894+130.5000/+30.1800+130.5120/+30.1742+130.5200/+30.1600+130.5380/+30.1520+130.5400/+30.1400+130.5441/+30.1200+130.5571/+30.1037+130.5400/+30.1000+130.5284/+30.0984+130.5200/+30.1000+130.5140/+30.1031+130.5000/+30.1065+130.4800/+30.1200+130.4621/+30.1211+130.4600/+30.1317+130.4400/+30.1400+130.4299/+30.1476+130.4200/+30.1600+130.4068/+30.1655+130.4000/+30.1800+130.3852/+30.1835+130.3800/+30.2000+130.3624/+30.2113+130.3600/+30.2200+130.3575/+30.2390+130.3400/+30.2400+130.3391/+30.2600+130.3232/+30.2639+130.3200/+30.2800+130.3062/+30.2948+130.3000/+30.3000+130.2951/+30.3200+130.2805/+30.3206+130.2800/+30.3400+130.2621/+30.3431+130.2600/+30.3600+130.2438/+30.3659+130.2400/+30.3800+130.2260/+30.3926+130.2200/+30.4000+130.2126/+30.4200+130.2001/+30.4272+130.2000/+30.4400+130.1872/+30.4538+130.2000/+30.4600+130.2028/+30.4767+130.2200/ +30.3397+130.4600/+30.3361+130.4800/+30.3200+130.4993/+30.3000+130.4930/+30.2815+130.4800/+30.2827+130.4600/+30.3000+130.4471/+30.3200+130.4469/+30.3397+130.4600/ +30.2624+130.4600/+30.2600+130.4623/+30.2558+130.4600/+30.2600+130.4586/+30.2624+130.4600/ 南東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4492+130.2400/+30.4400+130.2492/+30.4259+130.2400/+30.4204+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 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、３０日０９時から１２時までは火口から南東方向に降灰が予想されます。 　３０日３時から３０日２１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 　３０日０３時から０６時まで　南東　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　３０日０６時から０９時まで　南東　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　３０日０９時から１２時まで　南東　　　　　　５０ｋｍ　　１ｋｍ　　　　　 　３０日１２時から１５時まで　南東　　　　　　５０ｋｍ　　１ｋｍ　　　　　 　３０日１５時から１８時まで　南東　　　　　　５０ｋｍ　　１ｋｍ　　　　　 　３０日１８時から２１時まで　南東　　　　　　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。