2026-08-04T08:00:00Z 通常 気象庁本庁 気象庁 2026-08-04T17:00:00+09:00 2026-08-04T18:00:00+09:00 2026-08-05T12:00:00+09:00 508 発表 1 降灰予報 1.1_0 　現在、薩摩硫黄島は噴火警戒レベル２（火口周辺規制）です。薩摩硫黄島で噴火が発生した場合には、４日２１時から２４時までは火口から西方向、５日０９時から１２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 薩摩硫黄島 508 降灰 70 鹿児島県三島村 4630300 小さな噴石の落下 75 鹿児島県三島村 4630300 降灰予報（定時） 06 薩摩硫黄島 508 +3047.58+13018.32+704/ 降灰 70 鹿児島県三島村 4630300 小さな噴石の落下 75 鹿児島県三島村 4630300 2026-08-04T18:00:00+09:00 2026-08-04T21:00:00+09:00 降灰 70 +30.8007+130.2400/+30.8196+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3199/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2787/+30.7413+130.2600/+30.7403+130.2400/+30.7402+130.2200/+30.7400+130.2035/+30.7365+130.2000/+30.7219+130.1800/+30.7207+130.1600/+30.7203+130.1400/+30.7200+130.1364/+30.7057+130.1200/+30.7019+130.1000/+30.7008+130.0800/+30.7000+130.0712/+30.6908+130.0600/+30.6837+130.0400/+30.6800+130.0333/+30.6667+130.0200/+30.6644+130.0000/+30.6630+129.9800/+30.6606+129.9600/+30.6600+129.9567/+30.6476+129.9400/+30.6439+129.9200/+30.6400+129.9023/+30.6379+129.9000/+30.6260+129.8800/+30.6200+129.8624/+30.6194+129.8600/+30.6152+129.8400/+30.6134+129.8200/+30.6121+129.8000/+30.6105+129.7800/+30.6075+129.7600/+30.6000+129.7412/+30.5994+129.7400/+30.5915+129.7200/+30.5854+129.7000/+30.5835+129.6800/+30.5815+129.6600/+30.5820+129.6400/+30.5868+129.6200/+30.5957+129.6000/+30.6000+129.5929/+30.6029+129.6000/+30.6119+129.6200/+30.6200+129.6397/+30.6201+129.6400/+30.6268+129.6600/+30.6365+129.6800/+30.6400+129.6844/+30.6503+129.7000/+30.6600+129.7113/+30.6639+129.7200/+30.6708+129.7400/+30.6772+129.7600/+30.6800+129.7682/+30.6835+129.7800/+30.6922+129.8000/+30.7000+129.8145/+30.7020+129.8200/+30.7068+129.8400/+30.7113+129.8600/+30.7142+129.8800/+30.7159+129.9000/+30.7196+129.9200/+30.7200+129.9215/+30.7341+129.9400/+30.7400+129.9537/+30.7430+129.9600/+30.7499+129.9800/+30.7400+129.9938/+30.7390+130.0000/+30.7400+130.0068/+30.7490+130.0200/+30.7558+130.0400/+30.7584+130.0600/+30.7597+130.0800/+30.7600+130.0825/+30.7743+130.1000/+30.7784+130.1200/+30.7794+130.1400/+30.7800+130.1600/+30.7800+130.1601/+30.7977+130.1800/+30.7995+130.2000/+30.7998+130.2200/+30.8000+130.2393/+30.8007+130.2400/ 西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8097+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3180/+30.7620+130.3000/+30.7657+130.2800/+30.7800+130.2616/+30.8000+130.2703/+30.8097+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-04T21:00:00+09:00 2026-08-05T00:00:00+09:00 降灰 70 +30.8077+130.2400/+30.8196+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2785/+30.7416+130.2600/+30.7403+130.2400/+30.7402+130.2200/+30.7400+130.2006/+30.7394+130.2000/+30.7223+130.1800/+30.7209+130.1600/+30.7204+130.1400/+30.7200+130.1325/+30.7093+130.1200/+30.7028+130.1000/+30.7012+130.0800/+30.7002+130.0600/+30.7000+130.0580/+30.6874+130.0400/+30.6800+130.0296/+30.6703+130.0200/+30.6663+130.0000/+30.6641+129.9800/+30.6621+129.9600/+30.6600+129.9454/+30.6558+129.9400/+30.6480+129.9200/+30.6434+129.9000/+30.6408+129.8800/+30.6400+129.8773/+30.6280+129.8600/+30.6204+129.8400/+30.6200+129.8371/+30.6172+129.8200/+30.6152+129.8000/+30.6142+129.7800/+30.6124+129.7600/+30.6099+129.7400/+30.6042+129.7200/+30.6000+129.7145/+30.5954+129.7000/+30.5917+129.6800/+30.5882+129.6600/+30.5878+129.6400/+30.5912+129.6200/+30.5962+129.6000/+30.6000+129.5901/+30.6033+129.6000/+30.6102+129.6200/+30.6178+129.6400/+30.6200+129.6485/+30.6238+129.6600/+30.6337+129.6800/+30.6400+129.6846/+30.6508+129.7000/+30.6600+129.7079/+30.6657+129.7200/+30.6729+129.7400/+30.6789+129.7600/+30.6800+129.7636/+30.6849+129.7800/+30.6965+129.8000/+30.7000+129.8085/+30.7035+129.8200/+30.7078+129.8400/+30.7133+129.8600/+30.7176+129.8800/+30.7197+129.9000/+30.7200+129.9009/+30.7315+129.9200/+30.7400+129.9396/+30.7402+129.9400/+30.7483+129.9600/+30.7527+129.9800/+30.7400+129.9991/+30.7398+130.0000/+30.7400+130.0008/+30.7531+130.0200/+30.7573+130.0400/+30.7588+130.0600/+30.7600+130.0738/+30.7650+130.0800/+30.7758+130.1000/+30.7787+130.1200/+30.7794+130.1400/+30.7800+130.1551/+30.7845+130.1600/+30.7982+130.1800/+30.7996+130.2000/+30.7998+130.2200/+30.8000+130.2323/+30.8077+130.2400/ 西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8118+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3179/+30.7621+130.3000/+30.7660+130.2800/+30.7800+130.2626/+30.8000+130.2682/+30.8118+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-05T00:00:00+09:00 2026-08-05T03:00:00+09:00 降灰 70 +30.8190+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2893/+30.7507+130.2800/+30.7404+130.2600/+30.7401+130.2400/+30.7400+130.2302/+30.7298+130.2200/+30.7211+130.2000/+30.7204+130.1800/+30.7200+130.1692/+30.7114+130.1600/+30.7022+130.1400/+30.7007+130.1200/+30.7000+130.1128/+30.6895+130.1000/+30.6827+130.0800/+30.6807+130.0600/+30.6800+130.0555/+30.6676+130.0400/+30.6606+130.0200/+30.6600+130.0168/+30.6456+130.0000/+30.6400+129.9869/+30.6368+129.9800/+30.6297+129.9600/+30.6249+129.9400/+30.6200+129.9314/+30.6118+129.9200/+30.6086+129.9000/+30.6057+129.8800/+30.6000+129.8609/+30.5991+129.8600/+30.5820+129.8400/+30.5800+129.8343/+30.5757+129.8200/+30.5709+129.8000/+30.5688+129.7800/+30.5659+129.7600/+30.5633+129.7400/+30.5609+129.7200/+30.5600+129.7165/+30.5555+129.7000/+30.5600+129.6853/+30.5800+129.6905/+30.6000+129.6919/+30.6051+129.7000/+30.6176+129.7200/+30.6200+129.7247/+30.6266+129.7400/+30.6346+129.7600/+30.6400+129.7703/+30.6468+129.7800/+30.6599+129.8000/+30.6600+129.8001/+30.6668+129.8200/+30.6721+129.8400/+30.6798+129.8600/+30.6800+129.8605/+30.6937+129.8800/+30.7000+129.8879/+30.7054+129.9000/+30.7056+129.9200/+30.7132+129.9400/+30.7169+129.9600/+30.7196+129.9800/+30.7200+129.9812/+30.7322+130.0000/+30.7334+130.0200/+30.7381+130.0400/+30.7400+130.0571/+30.7424+130.0600/+30.7558+130.0800/+30.7586+130.1000/+30.7598+130.1200/+30.7600+130.1210/+30.7767+130.1400/+30.7792+130.1600/+30.7798+130.1800/+30.7800+130.1816/+30.7977+130.2000/+30.7997+130.2200/+30.7999+130.2400/+30.8000+130.2410/+30.8190+130.2600/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8123+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3178/+30.7622+130.3000/+30.7666+130.2800/+30.7800+130.2630/+30.8000+130.2677/+30.8123+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-05T03:00:00+09:00 2026-08-05T06:00:00+09:00 降灰 70 +30.8168+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2990/+30.7410+130.2800/+30.7401+130.2600/+30.7400+130.2544/+30.7256+130.2400/+30.7207+130.2200/+30.7200+130.2031/+30.7169+130.2000/+30.7023+130.1800/+30.7003+130.1600/+30.7000+130.1582/+30.6844+130.1400/+30.6811+130.1200/+30.6800+130.1133/+30.6691+130.1000/+30.6627+130.0800/+30.6600+130.0658/+30.6552+130.0600/+30.6400+130.0464/+30.6336+130.0400/+30.6285+130.0200/+30.6239+130.0000/+30.6200+129.9837/+30.6182+129.9800/+30.6095+129.9600/+30.6036+129.9400/+30.6000+129.9211/+30.5993+129.9200/+30.5873+129.9000/+30.5805+129.8800/+30.5800+129.8776/+30.5768+129.8600/+30.5702+129.8400/+30.5684+129.8200/+30.5662+129.8000/+30.5626+129.7800/+30.5600+129.7704/+30.5558+129.7600/+30.5501+129.7400/+30.5469+129.7200/+30.5415+129.7000/+30.5517+129.6800/+30.5600+129.6717/+30.5684+129.6800/+30.5800+129.6874/+30.6000+129.6947/+30.6032+129.7000/+30.6132+129.7200/+30.6200+129.7384/+30.6205+129.7400/+30.6268+129.7600/+30.6333+129.7800/+30.6398+129.8000/+30.6400+129.8002/+30.6554+129.8200/+30.6600+129.8311/+30.6628+129.8400/+30.6696+129.8600/+30.6741+129.8800/+30.6800+129.8968/+30.6831+129.9000/+30.6893+129.9200/+30.6976+129.9400/+30.7000+129.9451/+30.7079+129.9600/+30.7135+129.9800/+30.7173+130.0000/+30.7178+130.0200/+30.7200+130.0310/+30.7267+130.0400/+30.7356+130.0600/+30.7388+130.0800/+30.7400+130.0873/+30.7505+130.1000/+30.7577+130.1200/+30.7596+130.1400/+30.7600+130.1426/+30.7755+130.1600/+30.7791+130.1800/+30.7800+130.2000/+30.7800+130.2001/+30.7989+130.2200/+30.7998+130.2400/+30.8000+130.2432/+30.8168+130.2600/ 南西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8139+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3178/+30.7621+130.3000/+30.7653+130.2800/+30.7800+130.2620/+30.8000+130.2661/+30.8139+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-05T06:00:00+09:00 2026-08-05T09:00:00+09:00 降灰 70 +30.8171+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3199/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2994/+30.7406+130.2800/+30.7401+130.2600/+30.7400+130.2583/+30.7221+130.2400/+30.7203+130.2200/+30.7200+130.2176/+30.7037+130.2000/+30.7005+130.1800/+30.7000+130.1765/+30.6859+130.1600/+30.6808+130.1400/+30.6800+130.1368/+30.6666+130.1200/+30.6618+130.1000/+30.6600+130.0924/+30.6510+130.0800/+30.6437+130.0600/+30.6400+130.0540/+30.6258+130.0400/+30.6203+130.0200/+30.6200+130.0189/+30.6123+130.0000/+30.6070+129.9800/+30.6032+129.9600/+30.6000+129.9480/+30.5941+129.9400/+30.5861+129.9200/+30.5800+129.9007/+30.5798+129.9000/+30.5747+129.8800/+30.5711+129.8600/+30.5648+129.8400/+30.5630+129.8200/+30.5608+129.8000/+30.5604+129.7800/+30.5600+129.7681/+30.5596+129.7600/+30.5581+129.7400/+30.5555+129.7200/+30.5512+129.7000/+30.5600+129.6804/+30.5800+129.6941/+30.6000+129.6991/+30.6004+129.7000/+30.6098+129.7200/+30.6172+129.7400/+30.6200+129.7468/+30.6250+129.7600/+30.6338+129.7800/+30.6400+129.7946/+30.6426+129.8000/+30.6559+129.8200/+30.6600+129.8330/+30.6618+129.8400/+30.6684+129.8600/+30.6731+129.8800/+30.6800+129.8968/+30.6832+129.9000/+30.6900+129.9200/+30.6985+129.9400/+30.7000+129.9434/+30.7076+129.9600/+30.7125+129.9800/+30.7167+130.0000/+30.7172+130.0200/+30.7200+130.0333/+30.7251+130.0400/+30.7356+130.0600/+30.7387+130.0800/+30.7400+130.0879/+30.7497+130.1000/+30.7573+130.1200/+30.7595+130.1400/+30.7600+130.1429/+30.7751+130.1600/+30.7790+130.1800/+30.7799+130.2000/+30.7800+130.2005/+30.7986+130.2200/+30.7998+130.2400/+30.8000+130.2428/+30.8171+130.2600/ 南西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8148+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3179/+30.7621+130.3000/+30.7653+130.2800/+30.7800+130.2609/+30.8000+130.2652/+30.8148+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-05T09:00:00+09:00 2026-08-05T12:00:00+09:00 降灰 70 +30.8101+130.2600/+30.8198+130.2800/+30.8198+130.3000/+30.8000+130.3199/+30.7800+130.3199/+30.7601+130.3000/+30.7600+130.2992/+30.7408+130.2800/+30.7401+130.2600/+30.7400+130.2563/+30.7237+130.2400/+30.7204+130.2200/+30.7200+130.2082/+30.7119+130.2000/+30.7012+130.1800/+30.7000+130.1603/+30.6997+130.1600/+30.6822+130.1400/+30.6801+130.1200/+30.6800+130.1197/+30.6640+130.1000/+30.6604+130.0800/+30.6600+130.0781/+30.6455+130.0600/+30.6400+130.0534/+30.6256+130.0400/+30.6205+130.0200/+30.6200+130.0183/+30.6103+130.0000/+30.6049+129.9800/+30.6005+129.9600/+30.6000+129.9586/+30.5803+129.9400/+30.5800+129.9393/+30.5740+129.9200/+30.5697+129.9000/+30.5655+129.8800/+30.5624+129.8600/+30.5600+129.8500/+30.5553+129.8400/+30.5511+129.8200/+30.5458+129.8000/+30.5412+129.7800/+30.5400+129.7757/+30.5364+129.7600/+30.5329+129.7400/+30.5305+129.7200/+30.5280+129.7000/+30.5303+129.6800/+30.5332+129.6600/+30.5376+129.6400/+30.5400+129.6330/+30.5600+129.6363/+30.5617+129.6400/+30.5707+129.6600/+30.5800+129.6779/+30.5812+129.6800/+30.5954+129.7000/+30.6000+129.7044/+30.6078+129.7200/+30.6155+129.7400/+30.6200+129.7525/+30.6225+129.7600/+30.6294+129.7800/+30.6356+129.8000/+30.6400+129.8084/+30.6464+129.8200/+30.6539+129.8400/+30.6600+129.8498/+30.6644+129.8600/+30.6702+129.8800/+30.6758+129.9000/+30.6800+129.9148/+30.6823+129.9200/+30.6915+129.9400/+30.6983+129.9600/+30.7000+129.9655/+30.7061+129.9800/+30.7136+130.0000/+30.7135+130.0200/+30.7183+130.0400/+30.7200+130.0492/+30.7275+130.0600/+30.7366+130.0800/+30.7394+130.1000/+30.7400+130.1031/+30.7544+130.1200/+30.7587+130.1400/+30.7600+130.1567/+30.7631+130.1600/+30.7783+130.1800/+30.7797+130.2000/+30.7800+130.2023/+30.7974+130.2200/+30.7998+130.2400/+30.8000+130.2499/+30.8101+130.2600/ 南西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8150+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3188/+30.7612+130.3000/+30.7642+130.2800/+30.7781+130.2600/+30.7800+130.2582/+30.7812+130.2600/+30.8000+130.2650/+30.8150+130.2800/ 西 5 鹿児島県三島村 4630300 　現在、薩摩硫黄島は噴火警戒レベル２（火口周辺規制）です。薩摩硫黄島で噴火が発生した場合には、４日２１時から２４時までは火口から西方向、５日０９時から１２時までは火口から南西方向に降灰が予想されます。 　４日１８時から５日１２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 　０４日１８時から２１時まで　西　　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０４日２１時から２４時まで　西　　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０５日００時から０３時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０５日０３時から０６時まで　南西　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０５日０６時から０９時まで　南西　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０５日０９時から１２時まで　南西　　　　　　７０ｋｍ　　５ｋｍ　　　　　 　 　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：三島村 　 　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。