2026-08-03T05:00:00Z 通常 気象庁本庁 気象庁 2026-08-03T14:00:00+09:00 2026-08-03T15:00:00+09:00 2026-08-04T09:00:00+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、３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 2026-08-03T15:00:00+09:00 2026-08-03T18:00:00+09:00 降灰 70 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西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4404+130.1800/+30.4583+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4200+130.2068/+30.4132+130.2000/+30.4200+130.1850/+30.4379+130.1800/+30.4400+130.1795/+30.4404+130.1800/ 南西 4 鹿児島県屋久島町 4650500 2026-08-03T18:00:00+09:00 2026-08-03T21:00:00+09:00 降灰 70 +30.4769+130.2000/+30.4771+130.2200/+30.4600+130.2371/+30.4400+130.2399/+30.4200+130.2272/+30.4128+130.2200/+30.4002+130.2000/+30.4001+130.1800/+30.4000+130.1738/+30.3863+130.1600/+30.3806+130.1400/+30.3802+130.1200/+30.3800+130.1166/+30.3643+130.1000/+30.3609+130.0800/+30.3600+130.0604/+30.3596+130.0600/+30.3437+130.0400/+30.3408+130.0200/+30.3400+130.0128/+30.3302+130.0000/+30.3231+129.9800/+30.3200+129.9609/+30.3192+129.9600/+30.3033+129.9400/+30.3000+129.9209/+30.2993+129.9200/+30.2839+129.9000/+30.2800+129.8886/+30.2763+129.8800/+30.2700+129.8600/+30.2600+129.8422/+30.2583+129.8400/+30.2534+129.8200/+30.2500+129.8000/+30.2478+129.7800/+30.2450+129.7600/+30.2400+129.7493/+30.2311+129.7400/+30.2280+129.7200/+30.2248+129.7000/+30.2229+129.6800/+30.2205+129.6600/+30.2200+129.6506/+30.2193+129.6400/+30.2200+129.6200/+30.2200+129.6190/+30.2218+129.6000/+30.2400+129.5849/+30.2569+129.6000/+30.2600+129.6025/+30.2668+129.6200/+30.2737+129.6400/+30.2800+129.6596/+30.2801+129.6600/+30.2890+129.6800/+30.3000+129.6957/+30.3026+129.7000/+30.3090+129.7200/+30.3148+129.7400/+30.3200+129.7560/+30.3225+129.7600/+30.3393+129.7800/+30.3400+129.7815/+30.3460+129.8000/+30.3482+129.8200/+30.3533+129.8400/+30.3565+129.8600/+30.3600+129.8734/+30.3666+129.8800/+30.3792+129.9000/+30.3751+129.9200/+30.3784+129.9400/+30.3800+129.9500/+30.3878+129.9600/+30.3968+129.9800/+30.3990+130.0000/+30.4000+130.0073/+30.4114+130.0200/+30.4181+130.0400/+30.4196+130.0600/+30.4200+130.0641/+30.4347+130.0800/+30.4393+130.1000/+30.4398+130.1200/+30.4400+130.1220/+30.4579+130.1400/+30.4598+130.1600/+30.4600+130.1800/+30.4600+130.1831/+30.4769+130.2000/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4406+130.1800/+30.4581+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4216+130.2000/+30.4387+130.1800/+30.4400+130.1791/+30.4406+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-08-03T21:00:00+09:00 2026-08-04T00:00:00+09:00 降灰 70 +30.4765+130.2000/+30.4770+130.2200/+30.4600+130.2370/+30.4400+130.2399/+30.4200+130.2331/+30.4069+130.2200/+30.4001+130.2000/+30.4001+130.1800/+30.4000+130.1781/+30.3820+130.1600/+30.3804+130.1400/+30.3800+130.1283/+30.3718+130.1200/+30.3616+130.1000/+30.3603+130.0800/+30.3600+130.0779/+30.3445+130.0600/+30.3413+130.0400/+30.3400+130.0313/+30.3306+130.0200/+30.3230+130.0000/+30.3200+129.9821/+30.3183+129.9800/+30.3064+129.9600/+30.3000+129.9450/+30.2937+129.9400/+30.2828+129.9200/+30.2800+129.9079/+30.2773+129.9000/+30.2708+129.8800/+30.2652+129.8600/+30.2600+129.8493/+30.2539+129.8400/+30.2513+129.8200/+30.2486+129.8000/+30.2455+129.7800/+30.2408+129.7600/+30.2400+129.7581/+30.2308+129.7400/+30.2304+129.7200/+30.2299+129.7000/+30.2311+129.6800/+30.2328+129.6600/+30.2383+129.6400/+30.2400+129.6367/+30.2460+129.6400/+30.2600+129.6471/+30.2646+129.6600/+30.2719+129.6800/+30.2800+129.6994/+30.2802+129.7000/+30.2976+129.7200/+30.3000+129.7220/+30.3056+129.7400/+30.3102+129.7600/+30.3200+129.7797/+30.3203+129.7800/+30.3331+129.8000/+30.3372+129.8200/+30.3400+129.8260/+30.3472+129.8400/+30.3534+129.8600/+30.3579+129.8800/+30.3600+129.8880/+30.3700+129.9000/+30.3698+129.9200/+30.3762+129.9400/+30.3799+129.9600/+30.3800+129.9606/+30.3943+129.9800/+30.3982+130.0000/+30.4000+130.0179/+30.4019+130.0200/+30.4167+130.0400/+30.4193+130.0600/+30.4200+130.0697/+30.4292+130.0800/+30.4388+130.1000/+30.4398+130.1200/+30.4400+130.1237/+30.4556+130.1400/+30.4597+130.1600/+30.4599+130.1800/+30.4600+130.1835/+30.4765+130.2000/ 南西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4438+130.1800/+30.4585+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4215+130.2000/+30.4337+130.1800/+30.4400+130.1749/+30.4438+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-08-04T00:00:00+09:00 2026-08-04T03:00:00+09:00 降灰 70 +30.4788+130.2000/+30.4782+130.2200/+30.4600+130.2382/+30.4400+130.2399/+30.4200+130.2200/+30.4200+130.2199/+30.4003+130.2000/+30.4001+130.1800/+30.4000+130.1600/+30.4000+130.1591/+30.3818+130.1400/+30.3806+130.1200/+30.3801+130.1000/+30.3800+130.0991/+30.3642+130.0800/+30.3616+130.0600/+30.3603+130.0400/+30.3600+130.0366/+30.3479+130.0200/+30.3437+130.0000/+30.3413+129.9800/+30.3400+129.9705/+30.3326+129.9600/+30.3257+129.9400/+30.3200+129.9287/+30.3124+129.9200/+30.3087+129.9000/+30.3059+129.8800/+30.3034+129.8600/+30.3006+129.8400/+30.3000+129.8382/+30.2892+129.8200/+30.2868+129.8000/+30.2844+129.7800/+30.2811+129.7600/+30.2800+129.7534/+30.2768+129.7400/+30.2751+129.7200/+30.2764+129.7000/+30.2800+129.6823/+30.2806+129.6800/+30.2876+129.6600/+30.2974+129.6400/+30.3000+129.6352/+30.3014+129.6400/+30.3091+129.6600/+30.3177+129.6800/+30.3200+129.6857/+30.3253+129.7000/+30.3400+129.7174/+30.3412+129.7200/+30.3480+129.7400/+30.3536+129.7600/+30.3600+129.7732/+30.3654+129.7800/+30.3754+129.8000/+30.3791+129.8200/+30.3800+129.8229/+30.3866+129.8400/+30.3915+129.8600/+30.3973+129.8800/+30.4000+129.8885/+30.4050+129.9000/+30.4000+129.9127/+30.3992+129.9200/+30.4000+129.9234/+30.4097+129.9400/+30.4149+129.9600/+30.4183+129.9800/+30.4198+130.0000/+30.4200+130.0014/+30.4314+130.0200/+30.4366+130.0400/+30.4385+130.0600/+30.4397+130.0800/+30.4400+130.0854/+30.4512+130.1000/+30.4578+130.1200/+30.4595+130.1400/+30.4599+130.1600/+30.4600+130.1800/+30.4600+130.1806/+30.4788+130.2000/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4425+130.1800/+30.4581+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4219+130.2000/+30.4366+130.1800/+30.4400+130.1763/+30.4425+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-08-04T03:00:00+09:00 2026-08-04T06:00:00+09:00 降灰 70 +30.4773+130.2000/+30.4770+130.2200/+30.4600+130.2370/+30.4400+130.2399/+30.4200+130.2367/+30.4033+130.2200/+30.4001+130.2000/+30.4000+130.1956/+30.3844+130.1800/+30.3804+130.1600/+30.3800+130.1533/+30.3668+130.1400/+30.3611+130.1200/+30.3600+130.1119/+30.3488+130.1000/+30.3421+130.0800/+30.3400+130.0709/+30.3305+130.0600/+30.3240+130.0400/+30.3200+130.0236/+30.3171+130.0200/+30.3060+130.0000/+30.3033+129.9800/+30.3000+129.9694/+30.2924+129.9600/+30.2844+129.9400/+30.2811+129.9200/+30.2800+129.9115/+30.2775+129.9000/+30.2740+129.8800/+30.2713+129.8600/+30.2734+129.8400/+30.2720+129.8200/+30.2705+129.8000/+30.2709+129.7800/+30.2713+129.7600/+30.2730+129.7400/+30.2757+129.7200/+30.2771+129.7000/+30.2800+129.6823/+30.2804+129.6800/+30.2854+129.6600/+30.2966+129.6400/+30.3000+129.6363/+30.3018+129.6400/+30.3099+129.6600/+30.3177+129.6800/+30.3200+129.6855/+30.3267+129.7000/+30.3400+129.7148/+30.3432+129.7200/+30.3503+129.7400/+30.3559+129.7600/+30.3600+129.7696/+30.3638+129.7800/+30.3699+129.8000/+30.3762+129.8200/+30.3800+129.8332/+30.3823+129.8400/+30.3879+129.8600/+30.3952+129.8800/+30.4000+129.8958/+30.4013+129.9000/+30.4000+129.9038/+30.3980+129.9200/+30.4000+129.9301/+30.4048+129.9400/+30.4112+129.9600/+30.4146+129.9800/+30.4183+130.0000/+30.4200+130.0155/+30.4221+130.0200/+30.4335+130.0400/+30.4369+130.0600/+30.4387+130.0800/+30.4399+130.1000/+30.4400+130.1006/+30.4552+130.1200/+30.4588+130.1400/+30.4597+130.1600/+30.4599+130.1800/+30.4600+130.1823/+30.4773+130.2000/ 西 60 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4427+130.1800/+30.4584+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4207+130.2000/+30.4336+130.1800/+30.4400+130.1761/+30.4427+130.1800/ 西 4 鹿児島県屋久島町 4650500 2026-08-04T06:00:00+09:00 2026-08-04T09:00:00+09:00 降灰 70 +30.4673+130.2000/+30.4742+130.2200/+30.4600+130.2342/+30.4400+130.2399/+30.4200+130.2379/+30.4021+130.2200/+30.4001+130.2000/+30.4000+130.1981/+30.3819+130.1800/+30.3802+130.1600/+30.3800+130.1575/+30.3626+130.1400/+30.3603+130.1200/+30.3600+130.1175/+30.3429+130.1000/+30.3403+130.0800/+30.3400+130.0784/+30.3230+130.0600/+30.3200+130.0416/+30.3184+130.0400/+30.3031+130.0200/+30.3000+130.0041/+30.2961+130.0000/+30.2826+129.9800/+30.2800+129.9759/+30.2618+129.9600/+30.2600+129.9552/+30.2506+129.9400/+30.2448+129.9200/+30.2400+129.9027/+30.2369+129.9000/+30.2200+129.8858/+30.2158+129.8800/+30.2097+129.8600/+30.2052+129.8400/+30.2000+129.8254/+30.1945+129.8200/+30.1822+129.8000/+30.1800+129.7952/+30.1720+129.7800/+30.1667+129.7600/+30.1625+129.7400/+30.1600+129.7294/+30.1563+129.7200/+30.1463+129.7000/+30.1400+129.6854/+30.1382+129.6800/+30.1316+129.6600/+30.1294+129.6400/+30.1326+129.6200/+30.1393+129.6000/+30.1400+129.5994/+30.1414+129.6000/+30.1600+129.6098/+30.1654+129.6200/+30.1784+129.6400/+30.1800+129.6425/+30.2000+129.6595/+30.2004+129.6600/+30.2160+129.6800/+30.2200+129.6878/+30.2250+129.7000/+30.2358+129.7200/+30.2400+129.7271/+30.2503+129.7400/+30.2600+129.7531/+30.2624+129.7600/+30.2710+129.7800/+30.2770+129.8000/+30.2800+129.8039/+30.2991+129.8200/+30.2971+129.8400/+30.3000+129.8483/+30.3094+129.8600/+30.3200+129.8700/+30.3273+129.8800/+30.3364+129.9000/+30.3400+129.9104/+30.3454+129.9200/+30.3420+129.9400/+30.3566+129.9600/+30.3598+129.9800/+30.3600+129.9806/+30.3768+130.0000/+30.3800+130.0187/+30.3809+130.0200/+30.3967+130.0400/+30.3998+130.0600/+30.4000+130.0607/+30.4166+130.0800/+30.4197+130.1000/+30.4200+130.1019/+30.4370+130.1200/+30.4397+130.1400/+30.4400+130.1424/+30.4574+130.1600/+30.4599+130.1800/+30.4600+130.1927/+30.4673+130.2000/ 南西 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4441+130.1800/+30.4585+130.2000/+30.4588+130.2200/+30.4400+130.2388/+30.4212+130.2200/+30.4200+130.2000/+30.4208+130.1800/+30.4400+130.1759/+30.4441+130.1800/ 西 4 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、３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。 　３日１５時から４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 　０３日１５時から１８時まで　西　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０３日１８時から２１時まで　西　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０３日２１時から２４時まで　南西　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０４日００時から０３時まで　西　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０４日０３時から０６時まで　西　　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０４日０６時から０９時まで　南西　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　 　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。