2026-08-03T14:00:00Z 通常 気象庁本庁 気象庁 2026-08-03T23:00:00+09:00 2026-08-04T00:00:00+09:00 2026-08-04T18:00:00+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０９時から１２時までは火口から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 2026-08-04T00:00:00+09:00 2026-08-04T03:00:00+09:00 降灰 70 +30.8138+130.2200/+30.8192+130.2400/+30.8198+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8086+130.3200/+30.8000+130.3286/+30.7800+130.3201/+30.7799+130.3200/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2710/+30.7490+130.2600/+30.7411+130.2400/+30.7405+130.2200/+30.7403+130.2000/+30.7400+130.1846/+30.7359+130.1800/+30.7237+130.1600/+30.7215+130.1400/+30.7204+130.1200/+30.7200+130.1150/+30.7098+130.1000/+30.7043+130.0800/+30.7015+130.0600/+30.7000+130.0490/+30.6940+130.0400/+30.6818+130.0200/+30.6800+130.0122/+30.6762+130.0000/+30.6722+129.9800/+30.6689+129.9600/+30.6665+129.9400/+30.6644+129.9200/+30.6600+129.9088/+30.6546+129.9000/+30.6531+129.8800/+30.6523+129.8600/+30.6513+129.8400/+30.6502+129.8200/+30.6467+129.8000/+30.6423+129.7800/+30.6400+129.7721/+30.6378+129.7600/+30.6365+129.7400/+30.6377+129.7200/+30.6392+129.7000/+30.6400+129.6959/+30.6600+129.6850/+30.6668+129.7000/+30.6781+129.7200/+30.6800+129.7223/+30.7000+129.7394/+30.7003+129.7400/+30.7106+129.7600/+30.7189+129.7800/+30.7200+129.7855/+30.7230+129.8000/+30.7349+129.8200/+30.7400+129.8344/+30.7415+129.8400/+30.7482+129.8600/+30.7524+129.8800/+30.7554+129.9000/+30.7600+129.9191/+30.7605+129.9200/+30.7690+129.9400/+30.7732+129.9600/+30.7759+129.9800/+30.7748+130.0000/+30.7777+130.0200/+30.7788+130.0400/+30.7795+130.0600/+30.7800+130.0675/+30.7854+130.0800/+30.7909+130.1000/+30.7960+130.1200/+30.7985+130.1400/+30.7994+130.1600/+30.7997+130.1800/+30.7999+130.2000/+30.8000+130.2030/+30.8138+130.2200/ 西 60 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+130.3147/+30.7653+130.3000/+30.7665+130.2800/+30.7800+130.2621/+30.8000+130.2619/+30.8150+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-04T03:00:00+09:00 2026-08-04T06:00:00+09:00 降灰 70 +30.8159+130.2400/+30.8196+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8098+130.3200/+30.8000+130.3297/+30.7800+130.3227/+30.7773+130.3200/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2797/+30.7408+130.2600/+30.7403+130.2400/+30.7401+130.2200/+30.7400+130.2177/+30.7240+130.2000/+30.7213+130.1800/+30.7204+130.1600/+30.7200+130.1542/+30.7089+130.1400/+30.7027+130.1200/+30.7012+130.1000/+30.7000+130.0833/+30.6978+130.0800/+30.6870+130.0600/+30.6823+130.0400/+30.6800+130.0352/+30.6672+130.0200/+30.6647+130.0000/+30.6629+129.9800/+30.6601+129.9600/+30.6600+129.9596/+30.6516+129.9400/+30.6475+129.9200/+30.6442+129.9000/+30.6417+129.8800/+30.6400+129.8739/+30.6335+129.8600/+30.6268+129.8400/+30.6256+129.8200/+30.6252+129.8000/+30.6255+129.7800/+30.6259+129.7600/+30.6282+129.7400/+30.6342+129.7200/+30.6400+129.7077/+30.6600+129.7145/+30.6626+129.7200/+30.6715+129.7400/+30.6800+129.7597/+30.6801+129.7600/+30.6912+129.7800/+30.7000+129.7938/+30.7017+129.8000/+30.7092+129.8200/+30.7155+129.8400/+30.7200+129.8520/+30.7248+129.8600/+30.7334+129.8800/+30.7378+129.9000/+30.7400+129.9060/+30.7463+129.9200/+30.7537+129.9400/+30.7580+129.9600/+30.7600+129.9728/+30.7624+129.9800/+30.7600+129.9899/+30.7594+130.0000/+30.7600+130.0065/+30.7667+130.0200/+30.7697+130.0400/+30.7735+130.0600/+30.7781+130.0800/+30.7792+130.1000/+30.7797+130.1200/+30.7800+130.1239/+30.7898+130.1400/+30.7956+130.1600/+30.7988+130.1800/+30.7997+130.2000/+30.7999+130.2200/+30.8000+130.2213/+30.8159+130.2400/ 西 60 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+130.3170/+30.7630+130.3000/+30.7679+130.2800/+30.7800+130.2645/+30.8000+130.2631/+30.8139+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-04T06:00:00+09:00 2026-08-04T09:00:00+09:00 降灰 70 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西 60 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+130.3172/+30.7628+130.3000/+30.7664+130.2800/+30.7800+130.2621/+30.8000+130.2661/+30.8139+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-04T09:00:00+09:00 2026-08-04T12:00:00+09:00 降灰 70 +30.8180+130.2400/+30.8198+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+130.2782/+30.7420+130.2600/+30.7404+130.2400/+30.7402+130.2200/+30.7400+130.2013/+30.7388+130.2000/+30.7241+130.1800/+30.7217+130.1600/+30.7206+130.1400/+30.7200+130.1275/+30.7147+130.1200/+30.7055+130.1000/+30.7030+130.0800/+30.7008+130.0600/+30.7000+130.0531/+30.6921+130.0400/+30.6820+130.0200/+30.6800+130.0132/+30.6752+130.0000/+30.6701+129.9800/+30.6667+129.9600/+30.6642+129.9400/+30.6621+129.9200/+30.6600+129.9148/+30.6494+129.9000/+30.6481+129.8800/+30.6468+129.8600/+30.6451+129.8400/+30.6436+129.8200/+30.6400+129.8114/+30.6303+129.8000/+30.6279+129.7800/+30.6258+129.7600/+30.6249+129.7400/+30.6253+129.7200/+30.6257+129.7000/+30.6258+129.6800/+30.6260+129.6600/+30.6275+129.6400/+30.6318+129.6200/+30.6400+129.6021/+30.6600+129.6180/+30.6607+129.6200/+30.6673+129.6400/+30.6732+129.6600/+30.6789+129.6800/+30.6800+129.6836/+30.6848+129.7000/+30.6958+129.7200/+30.7000+129.7261/+30.7068+129.7400/+30.7157+129.7600/+30.7200+129.7709/+30.7229+129.7800/+30.7200+129.7896/+30.7179+129.8000/+30.7200+129.8081/+30.7256+129.8200/+30.7321+129.8400/+30.7400+129.8557/+30.7415+129.8600/+30.7463+129.8800/+30.7472+129.9000/+30.7514+129.9200/+30.7545+129.9400/+30.7583+129.9600/+30.7600+129.9680/+30.7651+129.9800/+30.7600+129.9859/+30.7577+130.0000/+30.7592+130.0200/+30.7600+130.0287/+30.7673+130.0400/+30.7749+130.0600/+30.7778+130.0800/+30.7791+130.1000/+30.7798+130.1200/+30.7800+130.1233/+30.7935+130.1400/+30.7982+130.1600/+30.7994+130.1800/+30.7997+130.2000/+30.7999+130.2200/+30.8000+130.2215/+30.8180+130.2400/ 西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8147+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3166/+30.7634+130.3000/+30.7650+130.2800/+30.7800+130.2610/+30.8000+130.2652/+30.8147+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-04T12:00:00+09:00 2026-08-04T15:00:00+09:00 降灰 70 +30.8186+130.2400/+30.8198+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8004+130.3200/+30.8000+130.3204/+30.7989+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2711/+30.7490+130.2600/+30.7408+130.2400/+30.7403+130.2200/+30.7402+130.2000/+30.7400+130.1901/+30.7314+130.1800/+30.7230+130.1600/+30.7212+130.1400/+30.7206+130.1200/+30.7200+130.1076/+30.7141+130.1000/+30.7042+130.0800/+30.7019+130.0600/+30.7005+130.0400/+30.7000+130.0352/+30.6870+130.0200/+30.6800+130.0073/+30.6766+130.0000/+30.6702+129.9800/+30.6673+129.9600/+30.6654+129.9400/+30.6637+129.9200/+30.6600+129.9119/+30.6507+129.9000/+30.6488+129.8800/+30.6474+129.8600/+30.6457+129.8400/+30.6415+129.8200/+30.6400+129.8171/+30.6262+129.8000/+30.6263+129.7800/+30.6263+129.7600/+30.6263+129.7400/+30.6260+129.7200/+30.6258+129.7000/+30.6283+129.6800/+30.6329+129.6600/+30.6400+129.6467/+30.6600+129.6578/+30.6609+129.6600/+30.6686+129.6800/+30.6758+129.7000/+30.6800+129.7140/+30.6820+129.7200/+30.6901+129.7400/+30.7000+129.7525/+30.7044+129.7600/+30.7155+129.7800/+30.7126+129.8000/+30.7177+129.8200/+30.7200+129.8285/+30.7259+129.8400/+30.7385+129.8600/+30.7400+129.8640/+30.7444+129.8800/+30.7440+129.9000/+30.7486+129.9200/+30.7548+129.9400/+30.7588+129.9600/+30.7600+129.9659/+30.7654+129.9800/+30.7600+129.9865/+30.7576+130.0000/+30.7592+130.0200/+30.7600+130.0284/+30.7675+130.0400/+30.7751+130.0600/+30.7781+130.0800/+30.7791+130.1000/+30.7798+130.1200/+30.7800+130.1218/+30.7944+130.1400/+30.7984+130.1600/+30.7994+130.1800/+30.7998+130.2000/+30.7999+130.2200/+30.8000+130.2209/+30.8186+130.2400/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8138+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3185/+30.7615+130.3000/+30.7662+130.2800/+30.7800+130.2626/+30.8000+130.2662/+30.8138+130.2800/ 西 3 鹿児島県三島村 4630300 2026-08-04T15:00:00+09:00 2026-08-04T18:00:00+09:00 降灰 70 +30.8121+130.2400/+30.8197+130.2600/+30.8199+130.2800/+30.8199+130.3000/+30.8000+130.3200/+30.7800+130.3200/+30.7601+130.3000/+30.7600+130.2800/+30.7600+130.2788/+30.7413+130.2600/+30.7403+130.2400/+30.7402+130.2200/+30.7400+130.2115/+30.7289+130.2000/+30.7216+130.1800/+30.7207+130.1600/+30.7200+130.1445/+30.7159+130.1400/+30.7041+130.1200/+30.7015+130.1000/+30.7000+130.0807/+30.6994+130.0800/+30.6868+130.0600/+30.6827+130.0400/+30.6800+130.0345/+30.6660+130.0200/+30.6637+130.0000/+30.6616+129.9800/+30.6600+129.9708/+30.6516+129.9600/+30.6440+129.9400/+30.6420+129.9200/+30.6400+129.9099/+30.6334+129.9000/+30.6247+129.8800/+30.6200+129.8645/+30.6188+129.8600/+30.6144+129.8400/+30.6123+129.8200/+30.6086+129.8000/+30.6035+129.7800/+30.6000+129.7726/+30.5947+129.7600/+30.5905+129.7400/+30.5892+129.7200/+30.5878+129.7000/+30.5891+129.6800/+30.5912+129.6600/+30.6000+129.6430/+30.6076+129.6600/+30.6144+129.6800/+30.6200+129.6923/+30.6245+129.7000/+30.6400+129.7143/+30.6452+129.7200/+30.6600+129.7355/+30.6621+129.7400/+30.6705+129.7600/+30.6778+129.7800/+30.6800+129.7888/+30.6833+129.8000/+30.6970+129.8200/+30.7000+129.8271/+30.7042+129.8400/+30.7105+129.8600/+30.7145+129.8800/+30.7169+129.9000/+30.7200+129.9151/+30.7228+129.9200/+30.7363+129.9400/+30.7400+129.9495/+30.7448+129.9600/+30.7512+129.9800/+30.7454+130.0000/+30.7525+130.0200/+30.7574+130.0400/+30.7599+130.0600/+30.7600+130.0609/+30.7706+130.0800/+30.7766+130.1000/+30.7788+130.1200/+30.7797+130.1400/+30.7800+130.1446/+30.7925+130.1600/+30.7984+130.1800/+30.7995+130.2000/+30.7998+130.2200/+30.8000+130.2277/+30.8121+130.2400/ 西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8095+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7800+130.3183/+30.7617+130.3000/+30.7677+130.2800/+30.7800+130.2643/+30.8000+130.2705/+30.8095+130.2800/ 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、４日０９時から１２時までは火口から西方向に降灰が予想されます。 　４日０時から４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 　０４日００時から０３時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０４日０３時から０６時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０４日０６時から０９時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０４日０９時から１２時まで　西　　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０４日１２時から１５時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０４日１５時から１８時まで　西　　　　　　　７０ｋｍ　　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。