2026-08-04T14:00:00Z 通常 気象庁本庁 気象庁 2026-08-04T23:00:00+09:00 2026-08-05T00:00:00+09:00 2026-08-05T18:00:00+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、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 2026-08-05T00:00:00+09:00 2026-08-05T03:00:00+09:00 降灰 70 +30.8065+130.2400/+30.8195+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/+30.7406+130.2600/+30.7402+130.2400/+30.7401+130.2200/+30.7400+130.2186/+30.7236+130.2000/+30.7212+130.1800/+30.7205+130.1600/+30.7200+130.1515/+30.7109+130.1400/+30.7041+130.1200/+30.7024+130.1000/+30.7007+130.0800/+30.7000+130.0706/+30.6941+130.0600/+30.6863+130.0400/+30.6800+130.0267/+30.6736+130.0200/+30.6696+130.0000/+30.6669+129.9800/+30.6646+129.9600/+30.6626+129.9400/+30.6603+129.9200/+30.6600+129.9191/+30.6474+129.9000/+30.6457+129.8800/+30.6439+129.8600/+30.6410+129.8400/+30.6400+129.8343/+30.6327+129.8200/+30.6256+129.8000/+30.6235+129.7800/+30.6213+129.7600/+30.6210+129.7400/+30.6237+129.7200/+30.6284+129.7000/+30.6332+129.6800/+30.6400+129.6647/+30.6600+129.6787/+30.6604+129.6800/+30.6664+129.7000/+30.6757+129.7200/+30.6800+129.7303/+30.6838+129.7400/+30.6918+129.7600/+30.7000+129.7733/+30.7043+129.7800/+30.7077+129.8000/+30.7129+129.8200/+30.7171+129.8400/+30.7200+129.8474/+30.7290+129.8600/+30.7372+129.8800/+30.7374+129.9000/+30.7400+129.9101/+30.7434+129.9200/+30.7501+129.9400/+30.7539+129.9600/+30.7566+129.9800/+30.7536+130.0000/+30.7575+130.0200/+30.7591+130.0400/+30.7600+130.0517/+30.7647+130.0600/+30.7741+130.0800/+30.7774+130.1000/+30.7789+130.1200/+30.7798+130.1400/+30.7800+130.1430/+30.7930+130.1600/+30.7982+130.1800/+30.7995+130.2000/+30.7998+130.2200/+30.8000+130.2333/+30.8065+130.2400/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8140+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3173/+30.7627+130.3000/+30.7665+130.2800/+30.7800+130.2627/+30.8000+130.2660/+30.8140+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 +30.8186+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2981/+30.7419+130.2800/+30.7402+130.2600/+30.7400+130.2420/+30.7380+130.2400/+30.7214+130.2200/+30.7204+130.2000/+30.7200+130.1940/+30.7067+130.1800/+30.7016+130.1600/+30.7000+130.1426/+30.6975+130.1400/+30.6845+130.1200/+30.6815+130.1000/+30.6800+130.0916/+30.6709+130.0800/+30.6654+130.0600/+30.6611+130.0400/+30.6600+130.0367/+30.6422+130.0200/+30.6400+130.0103/+30.6366+130.0000/+30.6329+129.9800/+30.6290+129.9600/+30.6257+129.9400/+30.6200+129.9264/+30.6161+129.9200/+30.6143+129.9000/+30.6125+129.8800/+30.6111+129.8600/+30.6096+129.8400/+30.6087+129.8200/+30.6072+129.8000/+30.6064+129.7800/+30.6050+129.7600/+30.6033+129.7400/+30.6011+129.7200/+30.6000+129.7145/+30.5988+129.7000/+30.6000+129.6922/+30.6200+129.6850/+30.6400+129.6825/+30.6537+129.7000/+30.6600+129.7081/+30.6637+129.7200/+30.6690+129.7400/+30.6743+129.7600/+30.6798+129.7800/+30.6800+129.7804/+30.6899+129.8000/+30.6967+129.8200/+30.7000+129.8339/+30.7012+129.8400/+30.7052+129.8600/+30.7083+129.8800/+30.7121+129.9000/+30.7160+129.9200/+30.7194+129.9400/+30.7200+129.9433/+30.7292+129.9600/+30.7363+129.9800/+30.7354+130.0000/+30.7373+130.0200/+30.7397+130.0400/+30.7400+130.0416/+30.7517+130.0600/+30.7566+130.0800/+30.7591+130.1000/+30.7600+130.1068/+30.7700+130.1200/+30.7766+130.1400/+30.7788+130.1600/+30.7799+130.1800/+30.7800+130.1805/+30.7972+130.2000/+30.7995+130.2200/+30.7999+130.2400/+30.8000+130.2412/+30.8186+130.2600/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8131+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3178/+30.7621+130.3000/+30.7665+130.2800/+30.7800+130.2627/+30.8000+130.2669/+30.8131+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 +30.8148+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2997/+30.7404+130.2800/+30.7400+130.2600/+30.7400+130.2599/+30.7210+130.2400/+30.7200+130.2272/+30.7129+130.2200/+30.7016+130.2000/+30.7000+130.1878/+30.6928+130.1800/+30.6820+130.1600/+30.6800+130.1497/+30.6722+130.1400/+30.6632+130.1200/+30.6600+130.1072/+30.6547+130.1000/+30.6468+130.0800/+30.6419+130.0600/+30.6400+130.0565/+30.6256+130.0400/+30.6200+130.0214/+30.6192+130.0200/+30.6110+130.0000/+30.6058+129.9800/+30.6022+129.9600/+30.6000+129.9490/+30.5946+129.9400/+30.5888+129.9200/+30.5801+129.9000/+30.5800+129.8998/+30.5746+129.8800/+30.5716+129.8600/+30.5656+129.8400/+30.5622+129.8200/+30.5600+129.8104/+30.5564+129.8000/+30.5533+129.7800/+30.5485+129.7600/+30.5476+129.7400/+30.5600+129.7206/+30.5800+129.7349/+30.6000+129.7400/+30.6131+129.7600/+30.6200+129.7735/+30.6229+129.7800/+30.6302+129.8000/+30.6393+129.8200/+30.6400+129.8210/+30.6512+129.8400/+30.6600+129.8530/+30.6632+129.8600/+30.6692+129.8800/+30.6751+129.9000/+30.6800+129.9146/+30.6825+129.9200/+30.6922+129.9400/+30.6994+129.9600/+30.7000+129.9614/+30.7081+129.9800/+30.7143+130.0000/+30.7148+130.0200/+30.7186+130.0400/+30.7200+130.0450/+30.7317+130.0600/+30.7372+130.0800/+30.7399+130.1000/+30.7400+130.1004/+30.7549+130.1200/+30.7587+130.1400/+30.7600+130.1500/+30.7695+130.1600/+30.7783+130.1800/+30.7796+130.2000/+30.7800+130.2023/+30.7973+130.2200/+30.7997+130.2400/+30.8000+130.2452/+30.8148+130.2600/ 南西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8134+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3179/+30.7621+130.3000/+30.7659+130.2800/+30.7800+130.2614/+30.8000+130.2666/+30.8134+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 +30.8040+130.2600/+30.8198+130.2800/+30.8199+130.3000/+30.8025+130.3200/+30.8000+130.3225/+30.7879+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2997/+30.7403+130.2800/+30.7400+130.2640/+30.7360+130.2600/+30.7206+130.2400/+30.7200+130.2315/+30.7086+130.2200/+30.7008+130.2000/+30.7000+130.1944/+30.6860+130.1800/+30.6807+130.1600/+30.6800+130.1569/+30.6651+130.1400/+30.6602+130.1200/+30.6600+130.1192/+30.6441+130.1000/+30.6400+130.0867/+30.6344+130.0800/+30.6200+130.0652/+30.6145+130.0600/+30.6073+130.0400/+30.6009+130.0200/+30.6000+130.0166/+30.5883+130.0000/+30.5812+129.9800/+30.5800+129.9777/+30.5697+129.9600/+30.5654+129.9400/+30.5603+129.9200/+30.5600+129.9187/+30.5508+129.9000/+30.5437+129.8800/+30.5400+129.8698/+30.5353+129.8600/+30.5300+129.8400/+30.5257+129.8200/+30.5211+129.8000/+30.5200+129.7826/+30.5198+129.7800/+30.5179+129.7600/+30.5170+129.7400/+30.5193+129.7200/+30.5200+129.7171/+30.5400+129.7013/+30.5600+129.7194/+30.5603+129.7200/+30.5692+129.7400/+30.5774+129.7600/+30.5800+129.7654/+30.5887+129.7800/+30.6000+129.7936/+30.6040+129.8000/+30.6174+129.8200/+30.6200+129.8273/+30.6229+129.8400/+30.6317+129.8600/+30.6393+129.8800/+30.6400+129.8811/+30.6548+129.9000/+30.6555+129.9200/+30.6600+129.9283/+30.6697+129.9400/+30.6794+129.9600/+30.6800+129.9615/+30.6884+129.9800/+30.6973+130.0000/+30.6973+130.0200/+30.7000+130.0266/+30.7101+130.0400/+30.7161+130.0600/+30.7200+130.0791/+30.7207+130.0800/+30.7359+130.1000/+30.7396+130.1200/+30.7400+130.1213/+30.7556+130.1400/+30.7591+130.1600/+30.7600+130.1645/+30.7740+130.1800/+30.7792+130.2000/+30.7800+130.2092/+30.7905+130.2200/+30.7995+130.2400/+30.8000+130.2560/+30.8040+130.2600/ 南西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8152+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3186/+30.7614+130.3000/+30.7638+130.2800/+30.7800+130.2607/+30.8000+130.2648/+30.8152+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-05T12:00:00+09:00 2026-08-05T15:00:00+09:00 降灰 70 +30.8196+130.2800/+30.8198+130.3000/+30.8043+130.3200/+30.8000+130.3243/+30.7800+130.3226/+30.7774+130.3200/+30.7600+130.3000/+30.7403+130.2800/+30.7400+130.2600/+30.7400+130.2599/+30.7205+130.2400/+30.7200+130.2279/+30.7121+130.2200/+30.7007+130.2000/+30.7000+130.1935/+30.6866+130.1800/+30.6807+130.1600/+30.6800+130.1560/+30.6646+130.1400/+30.6605+130.1200/+30.6600+130.1179/+30.6437+130.1000/+30.6400+130.0828/+30.6373+130.0800/+30.6200+130.0721/+30.6076+130.0600/+30.6033+130.0400/+30.6000+130.0292/+30.5878+130.0200/+30.5800+130.0090/+30.5741+130.0000/+30.5637+129.9800/+30.5600+129.9689/+30.5516+129.9600/+30.5400+129.9488/+30.5350+129.9400/+30.5287+129.9200/+30.5208+129.9000/+30.5200+129.8982/+30.5067+129.8800/+30.5000+129.8672/+30.4930+129.8600/+30.4814+129.8400/+30.4800+129.8366/+30.4735+129.8200/+30.4666+129.8000/+30.4601+129.7800/+30.4600+129.7799/+30.4443+129.7600/+30.4400+129.7520/+30.4358+129.7400/+30.4344+129.7200/+30.4323+129.7000/+30.4400+129.6809/+30.4600+129.6912/+30.4642+129.7000/+30.4773+129.7200/+30.4800+129.7222/+30.5000+129.7318/+30.5075+129.7400/+30.5200+129.7598/+30.5201+129.7600/+30.5308+129.7800/+30.5400+129.7989/+30.5407+129.8000/+30.5600+129.8135/+30.5673+129.8200/+30.5800+129.8394/+30.5802+129.8400/+30.5897+129.8600/+30.5970+129.8800/+30.6000+129.8833/+30.6200+129.8974/+30.6218+129.9000/+30.6297+129.9200/+30.6376+129.9400/+30.6400+129.9434/+30.6515+129.9600/+30.6571+129.9800/+30.6600+129.9863/+30.6761+130.0000/+30.6800+130.0042/+30.6903+130.0200/+30.6858+130.0400/+30.6979+130.0600/+30.7000+130.0688/+30.7093+130.0800/+30.7189+130.1000/+30.7200+130.1035/+30.7345+130.1200/+30.7394+130.1400/+30.7400+130.1422/+30.7564+130.1600/+30.7597+130.1800/+30.7600+130.1812/+30.7782+130.2000/+30.7798+130.2200/+30.7800+130.2204/+30.7994+130.2400/+30.7999+130.2600/+30.8000+130.2604/+30.8196+130.2800/ 南西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3188/+30.7612+130.3000/+30.7632+130.2800/+30.7800+130.2623/+30.7948+130.2800/+30.8000+130.2812/+30.8188+130.3000/ 南西 3 鹿児島県三島村 4630300 2026-08-05T15:00:00+09:00 2026-08-05T18:00:00+09:00 降灰 70 +30.8195+130.2800/+30.8198+130.3000/+30.8000+130.3199/+30.7800+130.3200/+30.7600+130.3000/+30.7600+130.2999/+30.7402+130.2800/+30.7400+130.2647/+30.7353+130.2600/+30.7204+130.2400/+30.7200+130.2309/+30.7091+130.2200/+30.7006+130.2000/+30.7000+130.1939/+30.6861+130.1800/+30.6807+130.1600/+30.6800+130.1558/+30.6646+130.1400/+30.6607+130.1200/+30.6600+130.1173/+30.6437+130.1000/+30.6403+130.0800/+30.6400+130.0789/+30.6200+130.0708/+30.6090+130.0600/+30.6039+130.0400/+30.6000+130.0206/+30.5992+130.0200/+30.5800+130.0003/+30.5798+130.0000/+30.5674+129.9800/+30.5616+129.9600/+30.5600+129.9554/+30.5418+129.9400/+30.5400+129.9370/+30.5334+129.9200/+30.5269+129.9000/+30.5200+129.8888/+30.5118+129.8800/+30.5062+129.8600/+30.5000+129.8431/+30.4971+129.8400/+30.4818+129.8200/+30.4800+129.8166/+30.4732+129.8000/+30.4673+129.7800/+30.4600+129.7610/+30.4594+129.7600/+30.4492+129.7400/+30.4400+129.7262/+30.4367+129.7200/+30.4281+129.7000/+30.4251+129.6800/+30.4200+129.6628/+30.4187+129.6600/+30.4050+129.6400/+30.4000+129.6371/+30.3926+129.6200/+30.3847+129.6000/+30.3907+129.5800/+30.4000+129.5675/+30.4084+129.5800/+30.4200+129.5964/+30.4226+129.6000/+30.4321+129.6200/+30.4400+129.6235/+30.4593+129.6400/+30.4600+129.6406/+30.4685+129.6600/+30.4776+129.6800/+30.4800+129.6844/+30.4906+129.7000/+30.5000+129.7053/+30.5156+129.7200/+30.5200+129.7259/+30.5281+129.7400/+30.5374+129.7600/+30.5400+129.7641/+30.5554+129.7800/+30.5600+129.7846/+30.5699+129.8000/+30.5800+129.8148/+30.5827+129.8200/+30.5881+129.8400/+30.5980+129.8600/+30.6000+129.8644/+30.6138+129.8800/+30.6200+129.8852/+30.6290+129.9000/+30.6342+129.9200/+30.6400+129.9335/+30.6448+129.9400/+30.6543+129.9600/+30.6584+129.9800/+30.6600+129.9829/+30.6800+129.9993/+30.6806+130.0000/+30.6922+130.0200/+30.6889+130.0400/+30.6983+130.0600/+30.7000+130.0668/+30.7113+130.0800/+30.7187+130.1000/+30.7200+130.1056/+30.7333+130.1200/+30.7393+130.1400/+30.7400+130.1429/+30.7562+130.1600/+30.7596+130.1800/+30.7600+130.1816/+30.7780+130.2000/+30.7798+130.2200/+30.7800+130.2206/+30.7992+130.2400/+30.7999+130.2600/+30.8000+130.2604/+30.8195+130.2800/ 南西 80 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3188/+30.7612+130.3000/+30.7621+130.2800/+30.7800+130.2605/+30.7958+130.2800/+30.8000+130.2812/+30.8188+130.3000/ 南西 3 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、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。 　５日０時から５日１８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 　０５日００時から０３時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０５日０３時から０６時まで　西　　　　　　　６０ｋｍ　　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　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０５日１２時から１５時まで　南西　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０５日１５時から１８時まで　南西　　　　　　８０ｋｍ　　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：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。