2026-08-20T20:00:00Z 通常 気象庁本庁 気象庁 2026-08-21T05:00:00+09:00 2026-08-21T06:00:00+09:00 2026-08-22T00:00:00+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、２１日０９時から１２時までは火口から北西方向、２１日２１時から２４時までは火口から北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 2026-08-21T06:00:00+09:00 2026-08-21T09:00:00+09:00 降灰 70 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北西 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/+30.7812+130.3000/+30.7917+130.2800/+30.8000+130.2709/+30.8148+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-21T09:00:00+09:00 2026-08-21T12:00:00+09:00 降灰 70 +31.1098+129.8000/+31.1024+129.8200/+31.1000+129.8276/+31.0943+129.8400/+31.0872+129.8600/+31.0806+129.8800/+31.0800+129.8824/+31.0759+129.9000/+31.0633+129.9200/+31.0600+129.9270/+31.0518+129.9400/+31.0400+129.9521/+31.0361+129.9600/+31.0223+129.9800/+31.0200+129.9827/+31.0133+130.0000/+31.0032+130.0200/+31.0000+130.0244/+30.9922+130.0400/+30.9801+130.0600/+30.9800+130.0601/+30.9600+130.0736/+30.9569+130.0800/+30.9453+130.1000/+30.9400+130.1057/+30.9348+130.1200/+30.9200+130.1372/+30.9191+130.1400/+30.9134+130.1600/+30.9000+130.1741/+30.8984+130.1800/+30.8829+130.2000/+30.8800+130.2028/+30.8782+130.2200/+30.8600+130.2389/+30.8598+130.2400/+30.8583+130.2600/+30.8400+130.2784/+30.8399+130.2800/+30.8391+130.3000/+30.8200+130.3191/+30.8144+130.3200/+30.8000+130.3343/+30.7800+130.3202/+30.7798+130.3200/+30.7605+130.3000/+30.7639+130.2800/+30.7800+130.2639/+30.7801+130.2600/+30.7812+130.2400/+30.8000+130.2208/+30.8002+130.2200/+30.8013+130.2000/+30.8113+130.1800/+30.8200+130.1707/+30.8215+130.1600/+30.8273+130.1400/+30.8400+130.1245/+30.8412+130.1200/+30.8477+130.1000/+30.8600+130.0842/+30.8618+130.0800/+30.8691+130.0600/+30.8800+130.0442/+30.8822+130.0400/+30.8926+130.0200/+30.9000+130.0057/+30.9023+130.0000/+30.9141+129.9800/+30.9200+129.9694/+30.9260+129.9600/+30.9400+129.9429/+30.9424+129.9400/+30.9600+129.9221/+30.9625+129.9200/+30.9739+129.9000/+30.9800+129.8923/+30.9934+129.8800/+31.0000+129.8728/+31.0117+129.8600/+31.0200+129.8499/+31.0298+129.8400/+31.0400+129.8274/+31.0549+129.8200/+31.0600+129.8170/+31.0800+129.8123/+31.0867+129.8000/+31.1000+129.7890/+31.1098+129.8000/ 北西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8188+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7897+130.2800/+30.8000+130.2680/+30.8188+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-21T12:00:00+09:00 2026-08-21T15:00:00+09:00 降灰 70 +31.1082+129.8000/+31.1000+129.8186/+31.0964+129.8200/+31.0896+129.8400/+31.0839+129.8600/+31.0800+129.8693/+31.0764+129.8800/+31.0693+129.9000/+31.0600+129.9135/+31.0569+129.9200/+31.0407+129.9400/+31.0400+129.9406/+31.0307+129.9600/+31.0200+129.9721/+31.0151+129.9800/+31.0040+130.0000/+31.0000+130.0056/+30.9919+130.0200/+30.9800+130.0369/+30.9783+130.0400/+30.9600+130.0556/+30.9573+130.0600/+30.9453+130.0800/+30.9400+130.0857/+30.9350+130.1000/+30.9200+130.1180/+30.9193+130.1200/+30.9123+130.1400/+30.9000+130.1537/+30.8985+130.1600/+30.8906+130.1800/+30.8800+130.1910/+30.8786+130.2000/+30.8666+130.2200/+30.8600+130.2267/+30.8593+130.2400/+30.8495+130.2600/+30.8400+130.2693/+30.8399+130.2800/+30.8376+130.3000/+30.8200+130.3176/+30.8127+130.3200/+30.8000+130.3327/+30.7819+130.3200/+30.7800+130.3199/+30.7604+130.3000/+30.7618+130.2800/+30.7800+130.2617/+30.7801+130.2600/+30.7804+130.2400/+30.7904+130.2200/+30.8000+130.2103/+30.8005+130.2000/+30.8029+130.1800/+30.8200+130.1613/+30.8203+130.1600/+30.8222+130.1400/+30.8304+130.1200/+30.8400+130.1087/+30.8421+130.1000/+30.8477+130.0800/+30.8600+130.0640/+30.8616+130.0600/+30.8699+130.0400/+30.8800+130.0275/+30.8841+130.0200/+30.8865+130.0000/+30.9000+129.9859/+30.9037+129.9800/+30.9119+129.9600/+30.9200+129.9470/+30.9261+129.9400/+30.9400+129.9213/+30.9411+129.9200/+30.9561+129.9000/+30.9600+129.8967/+30.9781+129.8800/+30.9800+129.8773/+30.9960+129.8600/+31.0000+129.8568/+31.0199+129.8400/+31.0200+129.8398/+31.0400+129.8218/+31.0453+129.8200/+31.0600+129.8137/+31.0800+129.8100/+31.0853+129.8000/+31.1000+129.7901/+31.1082+129.8000/ 北西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8137+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7902+130.2800/+30.8000+130.2678/+30.8137+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-21T15:00:00+09:00 2026-08-21T18:00:00+09:00 降灰 70 +31.0909+129.8400/+31.0851+129.8600/+31.0800+129.8699/+31.0762+129.8800/+31.0696+129.9000/+31.0600+129.9143/+31.0575+129.9200/+31.0428+129.9400/+31.0400+129.9427/+31.0325+129.9600/+31.0200+129.9732/+31.0153+129.9800/+31.0046+130.0000/+31.0000+130.0066/+30.9928+130.0200/+30.9800+130.0390/+30.9795+130.0400/+30.9600+130.0576/+30.9588+130.0600/+30.9479+130.0800/+30.9400+130.0878/+30.9348+130.1000/+30.9200+130.1179/+30.9192+130.1200/+30.9125+130.1400/+30.9000+130.1537/+30.8986+130.1600/+30.8915+130.1800/+30.8800+130.1920/+30.8788+130.2000/+30.8689+130.2200/+30.8600+130.2288/+30.8594+130.2400/+30.8501+130.2600/+30.8400+130.2701/+30.8399+130.2800/+30.8374+130.3000/+30.8200+130.3174/+30.8143+130.3200/+30.8000+130.3343/+30.7800+130.3215/+30.7785+130.3200/+30.7604+130.3000/+30.7618+130.2800/+30.7800+130.2618/+30.7801+130.2600/+30.7806+130.2400/+30.8000+130.2200/+30.8007+130.2000/+30.8052+130.1800/+30.8200+130.1640/+30.8206+130.1600/+30.8234+130.1400/+30.8396+130.1200/+30.8400+130.1196/+30.8432+130.1000/+30.8545+130.0800/+30.8600+130.0729/+30.8634+130.0600/+30.8774+130.0400/+30.8800+130.0363/+30.8853+130.0200/+30.8893+130.0000/+30.9000+129.9901/+30.9068+129.9800/+30.9170+129.9600/+30.9200+129.9554/+30.9323+129.9400/+30.9400+129.9278/+30.9461+129.9200/+30.9600+129.9040/+30.9640+129.9000/+30.9800+129.8845/+30.9848+129.8800/+31.0000+129.8624/+31.0034+129.8600/+31.0200+129.8459/+31.0278+129.8400/+31.0400+129.8277/+31.0592+129.8200/+31.0600+129.8196/+31.0642+129.8200/+31.0800+129.8235/+31.0909+129.8400/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8124+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7908+130.2800/+30.8000+130.2689/+30.8124+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-21T18:00:00+09:00 2026-08-21T21:00:00+09:00 降灰 70 +31.0904+129.8000/+31.0813+129.8200/+31.0800+129.8400/+31.0800+129.8401/+31.0753+129.8600/+31.0665+129.8800/+31.0600+129.8930/+31.0574+129.9000/+31.0479+129.9200/+31.0400+129.9294/+31.0352+129.9400/+31.0279+129.9600/+31.0200+129.9682/+31.0113+129.9800/+31.0005+130.0000/+31.0000+130.0008/+30.9921+130.0200/+30.9800+130.0392/+30.9796+130.0400/+30.9600+130.0566/+30.9587+130.0600/+30.9514+130.0800/+30.9400+130.0920/+30.9364+130.1000/+30.9223+130.1200/+30.9200+130.1224/+30.9163+130.1400/+30.9000+130.1592/+30.8998+130.1600/+30.8953+130.1800/+30.8800+130.1967/+30.8795+130.2000/+30.8753+130.2200/+30.8600+130.2353/+30.8596+130.2400/+30.8558+130.2600/+30.8400+130.2758/+30.8399+130.2800/+30.8386+130.3000/+30.8200+130.3186/+30.8155+130.3200/+30.8000+130.3355/+30.7800+130.3252/+30.7748+130.3200/+30.7604+130.3000/+30.7630+130.2800/+30.7800+130.2630/+30.7801+130.2600/+30.7812+130.2400/+30.8000+130.2210/+30.8002+130.2200/+30.8013+130.2000/+30.8161+130.1800/+30.8200+130.1759/+30.8215+130.1600/+30.8283+130.1400/+30.8400+130.1264/+30.8415+130.1200/+30.8468+130.1000/+30.8600+130.0838/+30.8615+130.0800/+30.8699+130.0600/+30.8800+130.0465/+30.8826+130.0400/+30.8896+130.0200/+30.8955+130.0000/+30.9000+129.9956/+30.9078+129.9800/+30.9193+129.9600/+30.9200+129.9590/+30.9340+129.9400/+30.9400+129.9276/+30.9442+129.9200/+30.9582+129.9000/+30.9600+129.8983/+30.9756+129.8800/+30.9800+129.8725/+30.9896+129.8600/+31.0000+129.8502/+31.0146+129.8400/+31.0200+129.8326/+31.0307+129.8200/+31.0400+129.8073/+31.0509+129.8000/+31.0600+129.7946/+31.0800+129.7975/+31.0904+129.8000/ 北西 60 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/+30.7812+130.3000/+30.7933+130.2800/+30.8000+130.2715/+30.8097+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-21T21:00:00+09:00 2026-08-22T00:00:00+09:00 降灰 70 +31.1013+129.8000/+31.1000+129.8028/+31.0969+129.8000/+31.1000+129.7976/+31.1013+129.8000/ +31.0827+129.8400/+31.0800+129.8575/+31.0797+129.8600/+31.0734+129.8800/+31.0671+129.9000/+31.0600+129.9115/+31.0565+129.9200/+31.0413+129.9400/+31.0400+129.9411/+31.0310+129.9600/+31.0200+129.9712/+31.0136+129.9800/+31.0037+130.0000/+31.0000+130.0055/+30.9937+130.0200/+30.9805+130.0400/+30.9800+130.0409/+30.9600+130.0580/+30.9589+130.0600/+30.9472+130.0800/+30.9400+130.0885/+30.9369+130.1000/+30.9200+130.1195/+30.9198+130.1200/+30.9149+130.1400/+30.9000+130.1571/+30.8995+130.1600/+30.8950+130.1800/+30.8800+130.1959/+30.8794+130.2000/+30.8752+130.2200/+30.8600+130.2353/+30.8597+130.2400/+30.8565+130.2600/+30.8400+130.2765/+30.8399+130.2800/+30.8390+130.3000/+30.8200+130.3190/+30.8155+130.3200/+30.8000+130.3355/+30.7800+130.3252/+30.7748+130.3200/+30.7604+130.3000/+30.7634+130.2800/+30.7800+130.2634/+30.7801+130.2600/+30.7816+130.2400/+30.8000+130.2215/+30.8003+130.2200/+30.8018+130.2000/+30.8200+130.1803/+30.8201+130.1800/+30.8221+130.1600/+30.8312+130.1400/+30.8400+130.1298/+30.8424+130.1200/+30.8505+130.1000/+30.8600+130.0889/+30.8631+130.0800/+30.8700+130.0600/+30.8800+130.0471/+30.8834+130.0400/+30.8942+130.0200/+30.9000+130.0038/+30.9007+130.0000/+30.9108+129.9800/+30.9200+129.9654/+30.9242+129.9600/+30.9400+129.9400/+30.9484+129.9200/+30.9600+129.9053/+30.9640+129.9000/+30.9800+129.8824/+30.9825+129.8800/+30.9982+129.8600/+31.0000+129.8584/+31.0200+129.8417/+31.0223+129.8400/+31.0400+129.8232/+31.0501+129.8200/+31.0600+129.8159/+31.0730+129.8200/+31.0800+129.8286/+31.0827+129.8400/ 北西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8110+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7928+130.2800/+30.8000+130.2712/+30.8110+130.2800/ 北西 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、２１日０９時から１２時までは火口から北西方向、２１日２１時から２４時までは火口から北西方向に降灰が予想されます。 　２１日６時から２１日２４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 　２１日０６時から０９時まで　北西　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　２１日０９時から１２時まで　北西　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　２１日１２時から１５時まで　北西　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　２１日１５時から１８時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　２１日１８時から２１時まで　北西　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　２１日２１時から２４時まで　北西　　　　　　６０ｋｍ　　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。