2026-07-21T05:35:00Z 通常 気象庁本庁 気象庁 2026-07-21T14:35:00+09:00 2026-07-21T14:14:00+09:00 2026-07-21T20:00:00+09:00 506 発表 1 降灰予報 1.1_0 　２１日２０時までに鹿児島市（桜島）ではやや多量の降灰があり、降灰は鹿児島県肝付町まで予想されます。 降灰予報（詳細） 08 桜島 506 やや多量の降灰 72 鹿児島県鹿児島市 4620100 少量の降灰 71 鹿児島県鹿児島市 4620100 鹿児島県鹿屋市 4620300 鹿児島県垂水市 4621400 鹿児島県霧島市 4621800 鹿児島県志布志市 4622100 鹿児島県大崎町 4646800 鹿児島県東串良町 4648200 鹿児島県錦江町 4649000 鹿児島県肝付町 4649200 降灰予報（詳細） 08 桜島 506 +3135.55+13039.40+1117/ 南岳山頂火口 +3134.63+13039.53+1060/ やや多量の降灰 72 鹿児島県鹿児島市 4620100 少量の降灰 71 鹿児島県鹿児島市 4620100 鹿児島県鹿屋市 4620300 鹿児島県垂水市 4621400 鹿児島県霧島市 4621800 鹿児島県志布志市 4622100 鹿児島県大崎町 4646800 鹿児島県東串良町 4648200 鹿児島県錦江町 4649000 鹿児島県肝付町 4649200 2026-07-21T14:14:00+09:00 2026-07-21T15:00:00+09:00 やや多量の降灰 72 0.1 +31.5960+130.6600/+31.5939+130.6800/+31.5800+130.6943/+31.5600+130.6838/+31.5564+130.6800/+31.5504+130.6600/+31.5600+130.6502/+31.5800+130.6437/+31.5960+130.6600/ 南東 3 鹿児島県鹿児島市 4620100 少量の降灰 71 0.0001 +31.6491+130.7200/+31.6467+130.7400/+31.6400+130.7487/+31.6200+130.7595/+31.6000+130.7572/+31.5828+130.7400/+31.5800+130.7387/+31.5609+130.7200/+31.5600+130.7198/+31.5400+130.7091/+31.5309+130.7000/+31.5212+130.6800/+31.5229+130.6600/+31.5400+130.6429/+31.5404+130.6400/+31.5600+130.6204/+31.5800+130.6202/+31.5998+130.6400/+31.6000+130.6408/+31.6192+130.6600/+31.6199+130.6800/+31.6200+130.6811/+31.6388+130.7000/+31.6400+130.7105/+31.6491+130.7200/ 北東 10 鹿児島県鹿児島市 4620100 鹿児島県垂水市 4621400 2026-07-21T14:14:00+09:00 2026-07-21T16:00:00+09:00 やや多量の降灰 72 0.1 +31.5960+130.6600/+31.5941+130.6800/+31.5800+130.6954/+31.5600+130.6895/+31.5518+130.6800/+31.5499+130.6600/+31.5600+130.6499/+31.5800+130.6437/+31.5960+130.6600/ 南東 3 鹿児島県鹿児島市 4620100 少量の降灰 71 0.0001 +31.6556+130.7200/+31.6581+130.7400/+31.6583+130.7600/+31.6587+130.7800/+31.6528+130.8000/+31.6400+130.8073/+31.6200+130.8160/+31.6000+130.8173/+31.5800+130.8098/+31.5696+130.8000/+31.5600+130.7870/+31.5532+130.7800/+31.5400+130.7611/+31.5391+130.7600/+31.5200+130.7565/+31.5016+130.7400/+31.5000+130.7376/+31.4845+130.7200/+31.4817+130.7000/+31.4808+130.6800/+31.4813+130.6600/+31.4958+130.6400/+31.5000+130.6361/+31.5200+130.6300/+31.5400+130.6303/+31.5600+130.6204/+31.5800+130.6202/+31.5998+130.6400/+31.6000+130.6408/+31.6192+130.6600/+31.6199+130.6800/+31.6200+130.6808/+31.6392+130.7000/+31.6400+130.7039/+31.6556+130.7200/ 東 20 鹿児島県鹿児島市 4620100 鹿児島県垂水市 4621400 鹿児島県霧島市 4621800 2026-07-21T14:14:00+09:00 2026-07-21T17:00:00+09:00 やや多量の降灰 72 0.1 +31.5960+130.6600/+31.5941+130.6800/+31.5800+130.6954/+31.5600+130.6896/+31.5516+130.6800/+31.5498+130.6600/+31.5600+130.6498/+31.5800+130.6437/+31.5960+130.6600/ 南東 3 鹿児島県鹿児島市 4620100 少量の降灰 71 0.0001 +31.6602+130.7800/+31.6619+130.8000/+31.6600+130.8092/+31.6400+130.8184/+31.6353+130.8200/+31.6200+130.8256/+31.6000+130.8300/+31.5800+130.8246/+31.5740+130.8200/+31.5600+130.8073/+31.5524+130.8000/+31.5400+130.7892/+31.5256+130.7800/+31.5200+130.7792/+31.5174+130.7800/+31.5000+130.7956/+31.4830+130.8000/+31.4800+130.8015/+31.4776+130.8000/+31.4600+130.7923/+31.4451+130.7800/+31.4467+130.7600/+31.4600+130.7404/+31.4601+130.7400/+31.4600+130.7396/+31.4436+130.7200/+31.4400+130.7171/+31.4215+130.7000/+31.4201+130.6800/+31.4200+130.6771/+31.4171+130.6600/+31.4175+130.6400/+31.4200+130.6357/+31.4329+130.6200/+31.4400+130.6156/+31.4600+130.6071/+31.4800+130.6063/+31.5000+130.6061/+31.5200+130.6193/+31.5208+130.6200/+31.5400+130.6246/+31.5600+130.6203/+31.5800+130.6202/+31.5998+130.6400/+31.6000+130.6408/+31.6192+130.6600/+31.6199+130.6800/+31.6200+130.6808/+31.6392+130.7000/+31.6400+130.7039/+31.6556+130.7200/+31.6581+130.7400/+31.6586+130.7600/+31.6600+130.7795/+31.6602+130.7800/ 南 20 鹿児島県鹿児島市 4620100 鹿児島県鹿屋市 4620300 鹿児島県垂水市 4621400 鹿児島県霧島市 4621800 2026-07-21T14:14:00+09:00 2026-07-21T18:00:00+09:00 やや多量の降灰 72 0.1 +31.5960+130.6600/+31.5941+130.6800/+31.5800+130.6954/+31.5600+130.6897/+31.5515+130.6800/+31.5498+130.6600/+31.5600+130.6498/+31.5800+130.6437/+31.5960+130.6600/ 南東 3 鹿児島県鹿児島市 4620100 少量の降灰 71 0.0001 +31.6602+130.7800/+31.6619+130.8000/+31.6607+130.8200/+31.6600+130.8206/+31.6400+130.8205/+31.6200+130.8284/+31.6000+130.8328/+31.5800+130.8318/+31.5650+130.8200/+31.5600+130.8134/+31.5454+130.8000/+31.5400+130.7963/+31.5251+130.8000/+31.5200+130.8023/+31.5000+130.8117/+31.4800+130.8160/+31.4600+130.8150/+31.4516+130.8200/+31.4400+130.8290/+31.4200+130.8379/+31.4024+130.8200/+31.4022+130.8000/+31.4014+130.7800/+31.4071+130.7600/+31.4000+130.7560/+31.3801+130.7400/+31.3800+130.7398/+31.3686+130.7200/+31.3649+130.7000/+31.3600+130.6800/+31.3638+130.6600/+31.3675+130.6400/+31.3800+130.6213/+31.3812+130.6200/+31.4000+130.6079/+31.4200+130.6028/+31.4386+130.6000/+31.4400+130.5994/+31.4600+130.5920/+31.4800+130.5949/+31.5000+130.5928/+31.5074+130.6000/+31.5200+130.6117/+31.5309+130.6200/+31.5400+130.6219/+31.5600+130.6202/+31.5800+130.6200/+31.5999+130.6400/+31.6000+130.6406/+31.6192+130.6600/+31.6199+130.6800/+31.6200+130.6808/+31.6392+130.7000/+31.6400+130.7039/+31.6556+130.7200/+31.6581+130.7400/+31.6587+130.7600/+31.6600+130.7795/+31.6602+130.7800/ +31.4202+130.8600/+31.4326+130.8800/+31.4200+130.8928/+31.4070+130.8800/+31.4192+130.8600/+31.4200+130.8592/+31.4202+130.8600/ 南 30 鹿児島県鹿児島市 4620100 鹿児島県鹿屋市 4620300 鹿児島県垂水市 4621400 鹿児島県霧島市 4621800 2026-07-21T14:14:00+09:00 2026-07-21T19:00:00+09:00 やや多量の降灰 72 0.1 +31.5960+130.6600/+31.5941+130.6800/+31.5800+130.6954/+31.5600+130.6897/+31.5515+130.6800/+31.5498+130.6600/+31.5600+130.6498/+31.5800+130.6437/+31.5960+130.6600/ 南東 3 鹿児島県鹿児島市 4620100 少量の降灰 71 0.0001 +31.6602+130.7800/+31.6619+130.8000/+31.6618+130.8200/+31.6600+130.8217/+31.6400+130.8268/+31.6200+130.8321/+31.6000+130.8349/+31.5800+130.8331/+31.5636+130.8200/+31.5600+130.8148/+31.5404+130.8000/+31.5400+130.7997/+31.5387+130.8000/+31.5200+130.8056/+31.5000+130.8151/+31.4800+130.8177/+31.4600+130.8183/+31.4579+130.8200/+31.4400+130.8347/+31.4312+130.8400/+31.4389+130.8600/+31.4400+130.8616/+31.4549+130.8800/+31.4535+130.9000/+31.4600+130.9190/+31.4628+130.9200/+31.4600+130.9225/+31.4532+130.9400/+31.4415+130.9600/+31.4400+130.9619/+31.4220+130.9600/+31.4200+130.9598/+31.4198+130.9600/+31.4000+130.9722/+31.3813+130.9600/+31.3800+130.9503/+31.3600+130.9417/+31.3588+130.9400/+31.3600+130.9365/+31.3665+130.9200/+31.3666+130.9000/+31.3600+130.8932/+31.3461+130.8800/+31.3501+130.8600/+31.3600+130.8508/+31.3670+130.8400/+31.3770+130.8200/+31.3736+130.8000/+31.3649+130.7800/+31.3655+130.7600/+31.3600+130.7516/+31.3508+130.7400/+31.3417+130.7200/+31.3400+130.7155/+31.3255+130.7000/+31.3324+130.6800/+31.3400+130.6652/+31.3417+130.6600/+31.3495+130.6400/+31.3540+130.6200/+31.3600+130.6116/+31.3699+130.6000/+31.3800+130.5884/+31.4000+130.5882/+31.4186+130.5800/+31.4200+130.5793/+31.4400+130.5780/+31.4600+130.5782/+31.4678+130.5800/+31.4800+130.5811/+31.5000+130.5834/+31.5171+130.5800/+31.5200+130.5785/+31.5221+130.5800/+31.5200+130.5891/+31.5192+130.6000/+31.5200+130.6007/+31.5400+130.6106/+31.5600+130.6161/+31.5800+130.6178/+31.5840+130.6200/+31.5999+130.6400/+31.6000+130.6405/+31.6192+130.6600/+31.6199+130.6800/+31.6200+130.6808/+31.6392+130.7000/+31.6400+130.7038/+31.6559+130.7200/+31.6582+130.7400/+31.6587+130.7600/+31.6600+130.7795/+31.6602+130.7800/ +31.4738+130.5200/+31.4600+130.5337/+31.4511+130.5400/+31.4400+130.5461/+31.4200+130.5452/+31.4025+130.5400/+31.4200+130.5304/+31.4358+130.5200/+31.4400+130.5175/+31.4600+130.5130/+31.4738+130.5200/ 南東 40 鹿児島県鹿児島市 4620100 鹿児島県鹿屋市 4620300 鹿児島県垂水市 4621400 鹿児島県霧島市 4621800 鹿児島県大崎町 4646800 鹿児島県東串良町 4648200 鹿児島県肝付町 4649200 2026-07-21T14:14:00+09:00 2026-07-21T20:00:00+09:00 やや多量の降灰 72 0.1 +31.5960+130.6600/+31.5941+130.6800/+31.5800+130.6954/+31.5600+130.6897/+31.5515+130.6800/+31.5498+130.6600/+31.5600+130.6498/+31.5800+130.6437/+31.5960+130.6600/ 南東 3 鹿児島県鹿児島市 4620100 少量の降灰 71 0.0001 +31.6620+130.7800/+31.6623+130.8000/+31.6630+130.8200/+31.6600+130.8230/+31.6400+130.8292/+31.6200+130.8337/+31.6000+130.8358/+31.5800+130.8339/+31.5628+130.8200/+31.5600+130.8155/+31.5400+130.8062/+31.5200+130.8068/+31.5000+130.8160/+31.4800+130.8183/+31.4600+130.8200/+31.4400+130.8364/+31.4351+130.8400/+31.4400+130.8519/+31.4465+130.8600/+31.4580+130.8800/+31.4600+130.8993/+31.4607+130.9000/+31.4800+130.9138/+31.4839+130.9200/+31.4834+130.9400/+31.4800+130.9449/+31.4630+130.9600/+31.4614+130.9800/+31.4600+130.9842/+31.4545+131.0000/+31.4430+131.0200/+31.4400+131.0241/+31.4200+131.0217/+31.4000+131.0255/+31.3876+131.0200/+31.3800+131.0156/+31.3674+131.0000/+31.3744+130.9800/+31.3600+130.9699/+31.3549+130.9600/+31.3400+130.9417/+31.3383+130.9400/+31.3250+130.9200/+31.3309+130.9000/+31.3300+130.8800/+31.3284+130.8600/+31.3235+130.8400/+31.3263+130.8200/+31.3295+130.8000/+31.3400+130.7843/+31.3416+130.7800/+31.3436+130.7600/+31.3400+130.7541/+31.3309+130.7400/+31.3274+130.7200/+31.3200+130.7083/+31.3135+130.7000/+31.3200+130.6911/+31.3247+130.6800/+31.3288+130.6600/+31.3400+130.6400/+31.3451+130.6200/+31.3560+130.6000/+31.3600+130.5828/+31.3617+130.5800/+31.3736+130.5600/+31.3619+130.5400/+31.3800+130.5212/+31.3878+130.5200/+31.4000+130.5148/+31.4200+130.5072/+31.4386+130.5000/+31.4400+130.4994/+31.4600+130.4935/+31.4800+130.4915/+31.5000+130.4967/+31.5062+130.5000/+31.5200+130.5181/+31.5210+130.5200/+31.5200+130.5335/+31.5174+130.5400/+31.5200+130.5433/+31.5230+130.5600/+31.5347+130.5800/+31.5347+130.6000/+31.5400+130.6023/+31.5600+130.6081/+31.5800+130.6111/+31.6000+130.6183/+31.6014+130.6200/+31.6000+130.6343/+31.6000+130.6400/+31.6194+130.6600/+31.6199+130.6800/+31.6200+130.6808/+31.6393+130.7000/+31.6400+130.7037/+31.6564+130.7200/+31.6584+130.7400/+31.6587+130.7600/+31.6600+130.7760/+31.6620+130.7800/ +31.4963+130.5600/+31.4800+130.5619/+31.4600+130.5602/+31.4594+130.5600/+31.4600+130.5596/+31.4800+130.5577/+31.4963+130.5600/ +31.4159+130.5600/+31.4000+130.5664/+31.3915+130.5600/+31.4000+130.5580/+31.4159+130.5600/ +31.3220+130.9800/+31.3200+130.9908/+31.3000+130.9806/+31.2994+130.9800/+31.3000+130.9794/+31.3200+130.9788/+31.3220+130.9800/ +31.3117+130.8200/+31.3118+130.8400/+31.3064+130.8600/+31.3000+130.8670/+31.2892+130.8800/+31.2800+130.8948/+31.2645+130.8800/+31.2779+130.8600/+31.2800+130.8542/+31.2886+130.8400/+31.2947+130.8200/+31.3000+130.8121/+31.3117+130.8200/ 南東 40 鹿児島県鹿児島市 4620100 鹿児島県鹿屋市 4620300 鹿児島県垂水市 4621400 鹿児島県霧島市 4621800 鹿児島県志布志市 4622100 鹿児島県大崎町 4646800 鹿児島県東串良町 4648200 鹿児島県錦江町 4649000 鹿児島県肝付町 4649200 　２１日２０時までに鹿児島市（桜島）ではやや多量の降灰があり、降灰は鹿児島県肝付町まで予想されます。 １．火山活動の状況及び予報事項 　２１日１４時１４分に桜島（南岳山頂火口）で噴火が発生し、噴煙は火口縁上３０００ｍまで上がりました。 　火口から南東方向（垂水・鹿屋方向）に火山灰が流され、２１日２０時までに鹿児島市（桜島）ではやや多量の降灰があり、降灰は鹿児島県肝付町まで予想されます。 ２．対象市町村等 　２１日２０時までに予想される降灰量は各市町村の多いところで次のとおりです。 　やや多量　鹿児島県：鹿児島市 　少量　　　鹿児島県：垂水市、霧島市、鹿屋市、大崎町、東串良町、肝付町、志布志市、錦江町 　予想される各市町村の降灰開始時刻は次のとおりです。 　１５時まで　鹿児島県：鹿児島市、垂水市 　１６時まで　鹿児島県：霧島市 　１７時まで　鹿児島県：鹿屋市 　１９時まで　鹿児島県：大崎町、東串良町、肝付町 　２０時まで　鹿児島県：志布志市、錦江町 　やや多量の降灰が予想される範囲内では、傘やマスク等で防灰対策をして、徐行運転を心掛けてください。 ＊＊（参考：降灰量階級　名称・厚さ・キーワードなど）＊＊ 【多　　量】【 1mm以上】火山灰がまきあげられ視界不良となり地面は完全に覆われる【外出を控える】 【やや多量】【0.1 - 1mm】火山灰が降っているのが明らかにわかり路面表示は見えにくくなる【注意】 【少　　量】【0.1mm未満】火山灰が降っているのがようやくわかり地面にうっすら積もる 2026-07-21T14:14:00+09:00 2026-07-21T05:14:00Z 3000 13400 流向不明