2026-08-17T11:00:00Z 通常 気象庁本庁 気象庁 2026-08-17T20:00:00+09:00 2026-08-17T21:00:00+09:00 2026-08-18T15:00:00+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、１７日２１時から２４時までは火口から北西方向、１８日０９時から１２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 2026-08-17T21:00:00+09:00 2026-08-18T00:00:00+09:00 降灰 70 +31.1625+129.9000/+31.1600+129.9031/+31.1400+129.9199/+31.1399+129.9200/+31.1344+129.9400/+31.1297+129.9600/+31.1200+129.9704/+31.1123+129.9800/+31.1000+130.0000/+31.0816+130.0200/+31.0800+130.0211/+31.0634+130.0400/+31.0600+130.0442/+31.0499+130.0600/+31.0400+130.0716/+31.0324+130.0800/+31.0200+130.0883/+31.0109+130.1000/+31.0000+130.1104/+30.9860+130.1200/+30.9800+130.1260/+30.9685+130.1400/+30.9600+130.1485/+30.9520+130.1600/+30.9400+130.1717/+30.9341+130.1800/+30.9200+130.1941/+30.9167+130.2000/+30.9000+130.2167/+30.8983+130.2200/+30.8800+130.2385/+30.8795+130.2400/+30.8600+130.2598/+30.8600+130.2600/+30.8562+130.2800/+30.8400+130.2962/+30.8397+130.3000/+30.8200+130.3197/+30.8179+130.3200/+30.8000+130.3379/+30.7800+130.3318/+30.7682+130.3200/+30.7605+130.3000/+30.7750+130.2800/+30.7800+130.2750/+30.7805+130.2600/+30.8000+130.2405/+30.8003+130.2400/+30.8078+130.2200/+30.8200+130.2078/+30.8223+130.2000/+30.8400+130.1813/+30.8407+130.1800/+30.8500+130.1600/+30.8600+130.1493/+30.8653+130.1400/+30.8800+130.1235/+30.8824+130.1200/+30.9000+130.1007/+30.9007+130.1000/+30.9135+130.0800/+30.9200+130.0730/+30.9303+130.0600/+30.9400+130.0429/+30.9420+130.0400/+30.9600+130.0210/+30.9609+130.0200/+30.9800+130.0002/+30.9804+130.0000/+31.0000+129.9856/+31.0083+129.9800/+31.0200+129.9648/+31.0247+129.9600/+31.0400+129.9452/+31.0484+129.9400/+31.0600+129.9330/+31.0800+129.9216/+31.0841+129.9200/+31.1000+129.9086/+31.1200+129.9047/+31.1252+129.9000/+31.1400+129.8922/+31.1600+129.8963/+31.1625+129.9000/ 北西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8091+130.2800/+30.8195+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7955+130.2800/+30.8000+130.2755/+30.8091+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T00:00:00+09:00 2026-08-18T03:00:00+09:00 降灰 70 +31.1411+129.9400/+31.1400+129.9421/+31.1356+129.9600/+31.1200+129.9770/+31.1171+129.9800/+31.1040+130.0000/+31.1000+130.0061/+31.0864+130.0200/+31.0800+130.0243/+31.0683+130.0400/+31.0600+130.0496/+31.0516+130.0600/+31.0400+130.0730/+31.0340+130.0800/+31.0200+130.0903/+31.0121+130.1000/+31.0000+130.1107/+30.9880+130.1200/+30.9800+130.1279/+30.9656+130.1400/+30.9600+130.1454/+30.9490+130.1600/+30.9400+130.1688/+30.9329+130.1800/+30.9200+130.1931/+30.9161+130.2000/+30.9000+130.2161/+30.8981+130.2200/+30.8800+130.2383/+30.8794+130.2400/+30.8600+130.2598/+30.8599+130.2600/+30.8564+130.2800/+30.8400+130.2964/+30.8397+130.3000/+30.8200+130.3197/+30.8179+130.3200/+30.8000+130.3379/+30.7800+130.3310/+30.7690+130.3200/+30.7606+130.3000/+30.7757+130.2800/+30.7800+130.2757/+30.7805+130.2600/+30.8000+130.2405/+30.8003+130.2400/+30.8105+130.2200/+30.8200+130.2105/+30.8226+130.2000/+30.8400+130.1821/+30.8411+130.1800/+30.8559+130.1600/+30.8600+130.1558/+30.8673+130.1400/+30.8800+130.1259/+30.8835+130.1200/+30.9000+130.1013/+30.9011+130.1000/+30.9141+130.0800/+30.9200+130.0736/+30.9335+130.0600/+30.9400+130.0464/+30.9430+130.0400/+30.9600+130.0224/+30.9628+130.0200/+30.9800+130.0043/+30.9858+130.0000/+31.0000+129.9872/+31.0104+129.9800/+31.0200+129.9692/+31.0311+129.9600/+31.0400+129.9514/+31.0571+129.9400/+31.0600+129.9383/+31.0800+129.9282/+31.0948+129.9200/+31.1000+129.9151/+31.1200+129.9153/+31.1396+129.9200/+31.1400+129.9213/+31.1411+129.9400/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8089+130.2800/+30.8195+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7952+130.2800/+30.8000+130.2752/+30.8089+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T03:00:00+09:00 2026-08-18T06:00:00+09:00 降灰 70 +31.1275+129.9400/+31.1339+129.9600/+31.1200+129.9777/+31.1182+129.9800/+31.1090+130.0000/+31.1000+130.0143/+31.0953+130.0200/+31.0800+130.0335/+31.0756+130.0400/+31.0600+130.0571/+31.0578+130.0600/+31.0404+130.0800/+31.0400+130.0804/+31.0200+130.0946/+31.0159+130.1000/+31.0000+130.1130/+30.9860+130.1200/+30.9800+130.1259/+30.9688+130.1400/+30.9600+130.1487/+30.9474+130.1600/+30.9400+130.1673/+30.9309+130.1800/+30.9200+130.1909/+30.9139+130.2000/+30.9000+130.2140/+30.8973+130.2200/+30.8800+130.2374/+30.8791+130.2400/+30.8600+130.2593/+30.8598+130.2600/+30.8538+130.2800/+30.8400+130.2938/+30.8396+130.3000/+30.8200+130.3196/+30.8176+130.3200/+30.8000+130.3376/+30.7800+130.3305/+30.7695+130.3200/+30.7604+130.3000/+30.7651+130.2800/+30.7800+130.2651/+30.7803+130.2600/+30.7895+130.2400/+30.8000+130.2294/+30.8020+130.2200/+30.8200+130.2006/+30.8203+130.2000/+30.8281+130.1800/+30.8400+130.1662/+30.8437+130.1600/+30.8600+130.1421/+30.8618+130.1400/+30.8800+130.1210/+30.8811+130.1200/+30.9000+130.1009/+30.9012+130.1000/+30.9200+130.0807/+30.9207+130.0800/+30.9400+130.0602/+30.9403+130.0600/+30.9562+130.0400/+30.9600+130.0361/+30.9707+130.0200/+30.9800+130.0105/+30.9949+130.0000/+31.0000+129.9956/+31.0200+129.9830/+31.0252+129.9800/+31.0400+129.9675/+31.0545+129.9600/+31.0600+129.9537/+31.0769+129.9400/+31.0800+129.9381/+31.1000+129.9340/+31.1200+129.9362/+31.1275+129.9400/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8080+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7958+130.2800/+30.8000+130.2753/+30.8080+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T06:00:00+09:00 2026-08-18T09:00:00+09:00 降灰 70 +31.0069+129.9200/+31.0003+129.9400/+31.0000+129.9410/+30.9966+129.9600/+30.9921+129.9800/+30.9859+130.0000/+30.9800+130.0133/+30.9777+130.0200/+30.9638+130.0400/+30.9600+130.0435/+30.9525+130.0600/+30.9400+130.0774/+30.9391+130.0800/+30.9314+130.1000/+30.9200+130.1167/+30.9192+130.1200/+30.9127+130.1400/+30.9000+130.1554/+30.8989+130.1600/+30.8914+130.1800/+30.8800+130.1922/+30.8789+130.2000/+30.8732+130.2200/+30.8600+130.2334/+30.8595+130.2400/+30.8555+130.2600/+30.8400+130.2761/+30.8399+130.2800/+30.8387+130.3000/+30.8200+130.3186/+30.8179+130.3200/+30.8000+130.3379/+30.7800+130.3341/+30.7659+130.3200/+30.7602+130.3000/+30.7611+130.2800/+30.7800+130.2611/+30.7801+130.2600/+30.7809+130.2400/+30.7901+130.2200/+30.8000+130.2088/+30.8008+130.2000/+30.8044+130.1800/+30.8200+130.1604/+30.8201+130.1600/+30.8233+130.1400/+30.8356+130.1200/+30.8400+130.1136/+30.8435+130.1000/+30.8529+130.0800/+30.8600+130.0689/+30.8629+130.0600/+30.8723+130.0400/+30.8800+130.0274/+30.8838+130.0200/+30.8906+130.0000/+30.9000+129.9899/+30.9064+129.9800/+30.9171+129.9600/+30.9200+129.9555/+30.9339+129.9400/+30.9400+129.9319/+30.9511+129.9200/+30.9600+129.9089/+30.9800+129.9072/+31.0000+129.9030/+31.0069+129.9200/ 北西 40 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/+30.7812+130.3000/+30.8000+130.2800/+30.8188+130.3000/ 北西 1 鹿児島県三島村 4630300 2026-08-18T09:00:00+09:00 2026-08-18T12:00:00+09:00 降灰 70 +31.0096+129.8400/+31.0159+129.8600/+31.0166+129.8800/+31.0107+129.9000/+31.0043+129.9200/+31.0000+129.9268/+30.9946+129.9400/+30.9872+129.9600/+30.9803+129.9800/+30.9800+129.9806/+30.9712+130.0000/+30.9600+130.0156/+30.9587+130.0200/+30.9529+130.0400/+30.9400+130.0542/+30.9370+130.0600/+30.9314+130.0800/+30.9200+130.0953/+30.9187+130.1000/+30.9128+130.1200/+30.9000+130.1358/+30.8991+130.1400/+30.8944+130.1600/+30.8800+130.1781/+30.8797+130.1800/+30.8771+130.2000/+30.8600+130.2190/+30.8599+130.2200/+30.8590+130.2400/+30.8441+130.2600/+30.8400+130.2641/+30.8399+130.2800/+30.8368+130.3000/+30.8200+130.3168/+30.8157+130.3200/+30.8000+130.3357/+30.7800+130.3290/+30.7710+130.3200/+30.7602+130.3000/+30.7609+130.2800/+30.7800+130.2609/+30.7801+130.2600/+30.7804+130.2400/+30.7834+130.2200/+30.8000+130.2024/+30.8003+130.2000/+30.8014+130.1800/+30.8058+130.1600/+30.8200+130.1414/+30.8202+130.1400/+30.8226+130.1200/+30.8281+130.1000/+30.8400+130.0819/+30.8404+130.0800/+30.8450+130.0600/+30.8527+130.0400/+30.8600+130.0286/+30.8625+130.0200/+30.8627+130.0000/+30.8735+129.9800/+30.8800+129.9682/+30.8842+129.9600/+30.8983+129.9400/+30.9000+129.9378/+30.9095+129.9200/+30.9200+129.9009/+30.9209+129.9000/+30.9360+129.8800/+30.9400+129.8723/+30.9483+129.8600/+30.9600+129.8482/+30.9800+129.8426/+30.9854+129.8400/+31.0000+129.8305/+31.0096+129.8400/ 北西 50 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/+30.7812+130.3000/+30.7915+130.2800/+30.8000+130.2699/+30.8095+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T12:00:00+09:00 2026-08-18T15:00:00+09:00 降灰 70 +31.0205+129.8000/+31.0200+129.8091/+31.0196+129.8200/+31.0194+129.8400/+31.0116+129.8600/+31.0005+129.8800/+31.0000+129.8807/+30.9915+129.9000/+30.9852+129.9200/+30.9800+129.9347/+30.9777+129.9400/+30.9617+129.9600/+30.9600+129.9618/+30.9523+129.9800/+30.9459+130.0000/+30.9400+130.0127/+30.9380+130.0200/+30.9200+130.0386/+30.9193+130.0400/+30.9138+130.0600/+30.9017+130.0800/+30.9000+130.0823/+30.8969+130.1000/+30.8874+130.1200/+30.8800+130.1288/+30.8785+130.1400/+30.8758+130.1600/+30.8600+130.1799/+30.8600+130.1800/+30.8590+130.2000/+30.8569+130.2200/+30.8400+130.2385/+30.8399+130.2400/+30.8398+130.2600/+30.8394+130.2800/+30.8200+130.2997/+30.8200+130.3000/+30.8122+130.3200/+30.8000+130.3322/+30.7800+130.3203/+30.7797+130.3200/+30.7602+130.3000/+30.7603+130.2800/+30.7647+130.2600/+30.7800+130.2442/+30.7801+130.2400/+30.7804+130.2200/+30.7814+130.2000/+30.7859+130.1800/+30.8000+130.1618/+30.8002+130.1600/+30.8013+130.1400/+30.8042+130.1200/+30.8111+130.1000/+30.8200+130.0858/+30.8210+130.0800/+30.8253+130.0600/+30.8307+130.0400/+30.8400+130.0241/+30.8411+130.0200/+30.8449+130.0000/+30.8507+129.9800/+30.8600+129.9610/+30.8606+129.9600/+30.8713+129.9400/+30.8800+129.9257/+30.8831+129.9200/+30.8911+129.9000/+30.9000+129.8845/+30.9034+129.8800/+30.9175+129.8600/+30.9200+129.8576/+30.9359+129.8400/+30.9400+129.8334/+30.9507+129.8200/+30.9600+129.8119/+30.9800+129.8041/+30.9834+129.8000/+31.0000+129.7856/+31.0200+129.7995/+31.0205+129.8000/ 西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8092+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7908+130.2800/+30.8000+130.2687/+30.8092+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、１７日２１時から２４時までは火口から北西方向、１８日０９時から１２時までは火口から北西方向に降灰が予想されます。 　１７日２１時から１８日１５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 　１７日２１時から２４時まで　北西　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　１８日００時から０３時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日０３時から０６時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日０６時から０９時まで　北西　　　　　　４０ｋｍ　　１ｋｍ　　　　　 　１８日０９時から１２時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日１２時から１５時まで　西　　　　　　　５０ｋｍ　　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。