2026-08-17T20:00:00Z 通常 気象庁本庁 気象庁 2026-08-18T05:00:00+09:00 2026-08-18T06:00:00+09:00 2026-08-19T00:00:00+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、１８日０９時から１２時までは火口から北西方向、１８日２１時から２４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 2026-08-18T06:00:00+09:00 2026-08-18T09:00:00+09:00 降灰 70 +31.0291+129.9200/+31.0221+129.9400/+31.0200+129.9489/+31.0178+129.9600/+31.0069+129.9800/+31.0000+129.9902/+30.9946+130.0000/+30.9849+130.0200/+30.9800+130.0287/+30.9750+130.0400/+30.9600+130.0563/+30.9585+130.0600/+30.9472+130.0800/+30.9400+130.0886/+30.9349+130.1000/+30.9200+130.1194/+30.9198+130.1200/+30.9146+130.1400/+30.9000+130.1562/+30.8990+130.1600/+30.8939+130.1800/+30.8800+130.1952/+30.8792+130.2000/+30.8731+130.2200/+30.8600+130.2335/+30.8596+130.2400/+30.8560+130.2600/+30.8400+130.2759/+30.8399+130.2800/+30.8386+130.3000/+30.8200+130.3185/+30.8174+130.3200/+30.8000+130.3374/+30.7800+130.3322/+30.7678+130.3200/+30.7602+130.3000/+30.7612+130.2800/+30.7800+130.2612/+30.7801+130.2600/+30.7810+130.2400/+30.7956+130.2200/+30.8000+130.2154/+30.8011+130.2000/+30.8060+130.1800/+30.8200+130.1636/+30.8208+130.1600/+30.8249+130.1400/+30.8377+130.1200/+30.8400+130.1165/+30.8436+130.1000/+30.8539+130.0800/+30.8600+130.0719/+30.8647+130.0600/+30.8727+130.0400/+30.8800+130.0296/+30.8860+130.0200/+30.8925+130.0000/+30.9000+129.9924/+30.9090+129.9800/+30.9200+129.9633/+30.9235+129.9600/+30.9400+129.9429/+30.9427+129.9400/+30.9575+129.9200/+30.9600+129.9170/+30.9800+129.9057/+30.9894+129.9000/+31.0000+129.8933/+31.0143+129.9000/+31.0200+129.9048/+31.0291+129.9200/ 北西 40 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8061+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7952+130.2800/+30.8000+130.2744/+30.8061+130.2800/ 北西 3 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 +31.0371+129.8400/+31.0392+129.8600/+31.0388+129.8800/+31.0294+129.9000/+31.0226+129.9200/+31.0200+129.9262/+31.0130+129.9400/+31.0000+129.9577/+30.9992+129.9600/+30.9913+129.9800/+30.9828+130.0000/+30.9800+130.0052/+30.9736+130.0200/+30.9600+130.0340/+30.9582+130.0400/+30.9419+130.0600/+30.9400+130.0624/+30.9340+130.0800/+30.9200+130.0984/+30.9197+130.1000/+30.9142+130.1200/+30.9000+130.1357/+30.8990+130.1400/+30.8952+130.1600/+30.8800+130.1769/+30.8796+130.1800/+30.8774+130.2000/+30.8600+130.2181/+30.8598+130.2200/+30.8592+130.2400/+30.8400+130.2599/+30.8400+130.2600/+30.8399+130.2800/+30.8373+130.3000/+30.8200+130.3173/+30.8159+130.3200/+30.8000+130.3359/+30.7800+130.3288/+30.7712+130.3200/+30.7603+130.3000/+30.7614+130.2800/+30.7800+130.2614/+30.7801+130.2600/+30.7808+130.2400/+30.8000+130.2205/+30.8001+130.2200/+30.8009+130.2000/+30.8091+130.1800/+30.8200+130.1686/+30.8209+130.1600/+30.8251+130.1400/+30.8400+130.1233/+30.8408+130.1200/+30.8441+130.1000/+30.8584+130.0800/+30.8600+130.0781/+30.8645+130.0600/+30.8748+130.0400/+30.8800+130.0326/+30.8835+130.0200/+30.8844+130.0000/+30.9000+129.9862/+30.9037+129.9800/+30.9091+129.9600/+30.9200+129.9408/+30.9207+129.9400/+30.9343+129.9200/+30.9400+129.9052/+30.9427+129.9000/+30.9592+129.8800/+30.9600+129.8789/+30.9742+129.8600/+30.9800+129.8524/+30.9895+129.8400/+31.0000+129.8265/+31.0200+129.8313/+31.0371+129.8400/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8087+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7926+130.2800/+30.8000+130.2712/+30.8087+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 +31.0016+129.8200/+31.0104+129.8400/+31.0067+129.8600/+31.0036+129.8800/+31.0000+129.8857/+30.9940+129.9000/+30.9890+129.9200/+30.9832+129.9400/+30.9800+129.9454/+30.9709+129.9600/+30.9600+129.9767/+30.9592+129.9800/+30.9534+130.0000/+30.9466+130.0200/+30.9400+130.0323/+30.9361+130.0400/+30.9200+130.0575/+30.9192+130.0600/+30.9132+130.0800/+30.9000+130.0978/+30.8994+130.1000/+30.8962+130.1200/+30.8866+130.1400/+30.8800+130.1474/+30.8783+130.1600/+30.8743+130.1800/+30.8600+130.1965/+30.8597+130.2000/+30.8587+130.2200/+30.8519+130.2400/+30.8400+130.2521/+30.8399+130.2600/+30.8396+130.2800/+30.8280+130.3000/+30.8200+130.3080/+30.8138+130.3200/+30.8000+130.3338/+30.7800+130.3232/+30.7768+130.3200/+30.7602+130.3000/+30.7604+130.2800/+30.7681+130.2600/+30.7800+130.2477/+30.7801+130.2400/+30.7805+130.2200/+30.7819+130.2000/+30.7865+130.1800/+30.8000+130.1606/+30.8001+130.1600/+30.8017+130.1400/+30.8048+130.1200/+30.8114+130.1000/+30.8200+130.0857/+30.8214+130.0800/+30.8253+130.0600/+30.8354+130.0400/+30.8400+130.0303/+30.8430+130.0200/+30.8487+130.0000/+30.8600+129.9813/+30.8609+129.9800/+30.8679+129.9600/+30.8784+129.9400/+30.8800+129.9377/+30.8935+129.9200/+30.8992+129.9000/+30.9000+129.8986/+30.9181+129.8800/+30.9200+129.8774/+30.9338+129.8600/+30.9400+129.8535/+30.9551+129.8400/+30.9600+129.8339/+30.9800+129.8289/+30.9975+129.8200/+31.0000+129.8171/+31.0016+129.8200/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8106+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7908+130.2800/+30.8000+130.2687/+30.8106+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T15:00:00+09:00 2026-08-18T18:00:00+09:00 降灰 70 +31.0214+129.8000/+31.0200+129.8045/+31.0155+129.8200/+31.0104+129.8400/+31.0000+129.8600/+31.0000+129.8601/+30.9951+129.8800/+30.9880+129.9000/+30.9808+129.9200/+30.9800+129.9221/+30.9692+129.9400/+30.9600+129.9486/+30.9562+129.9600/+30.9479+129.9800/+30.9405+130.0000/+30.9400+130.0011/+30.9354+130.0200/+30.9200+130.0358/+30.9179+130.0400/+30.9113+130.0600/+30.9000+130.0764/+30.8992+130.0800/+30.8960+130.1000/+30.8899+130.1200/+30.8800+130.1325/+30.8790+130.1400/+30.8766+130.1600/+30.8671+130.1800/+30.8600+130.1876/+30.8594+130.2000/+30.8583+130.2200/+30.8466+130.2400/+30.8400+130.2466/+30.8399+130.2600/+30.8395+130.2800/+30.8299+130.3000/+30.8200+130.3099/+30.8113+130.3200/+30.8000+130.3313/+30.7816+130.3200/+30.7800+130.3200/+30.7602+130.3000/+30.7605+130.2800/+30.7784+130.2600/+30.7800+130.2584/+30.7801+130.2400/+30.7805+130.2200/+30.7818+130.2000/+30.7875+130.1800/+30.8000+130.1642/+30.8003+130.1600/+30.8013+130.1400/+30.8035+130.1200/+30.8084+130.1000/+30.8155+130.0800/+30.8200+130.0738/+30.8223+130.0600/+30.8267+130.0400/+30.8325+130.0200/+30.8400+130.0098/+30.8428+130.0000/+30.8445+129.9800/+30.8494+129.9600/+30.8575+129.9400/+30.8600+129.9354/+30.8701+129.9200/+30.8800+129.9008/+30.8804+129.9000/+30.8908+129.8800/+30.8995+129.8600/+30.9000+129.8592/+30.9155+129.8400/+30.9200+129.8314/+30.9265+129.8200/+30.9386+129.8000/+30.9400+129.7978/+30.9600+129.7812/+30.9627+129.7800/+30.9800+129.7706/+30.9937+129.7600/+31.0000+129.7542/+31.0073+129.7600/+31.0174+129.7800/+31.0200+129.7914/+31.0214+129.8000/ 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/+30.7812+130.3000/+30.7898+130.2800/+30.8000+130.2674/+30.8134+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T18:00:00+09:00 2026-08-18T21:00:00+09:00 降灰 70 +31.0558+129.7600/+31.0462+129.7800/+31.0424+129.8000/+31.0400+129.8035/+31.0310+129.8200/+31.0254+129.8400/+31.0200+129.8525/+31.0175+129.8600/+31.0109+129.8800/+31.0000+129.8949/+30.9975+129.9000/+30.9897+129.9200/+30.9830+129.9400/+30.9800+129.9444/+30.9691+129.9600/+30.9600+129.9712/+30.9570+129.9800/+30.9520+130.0000/+30.9460+130.0200/+30.9400+130.0312/+30.9344+130.0400/+30.9200+130.0514/+30.9168+130.0600/+30.9096+130.0800/+30.9000+130.0926/+30.8984+130.1000/+30.8944+130.1200/+30.8822+130.1400/+30.8800+130.1424/+30.8775+130.1600/+30.8716+130.1800/+30.8600+130.1929/+30.8594+130.2000/+30.8581+130.2200/+30.8456+130.2400/+30.8400+130.2457/+30.8398+130.2600/+30.8394+130.2800/+30.8306+130.3000/+30.8200+130.3106/+30.8088+130.3200/+30.8000+130.3288/+30.7855+130.3200/+30.7800+130.3199/+30.7602+130.3000/+30.7603+130.2800/+30.7626+130.2600/+30.7800+130.2415/+30.7801+130.2400/+30.7803+130.2200/+30.7810+130.2000/+30.7830+130.1800/+30.7880+130.1600/+30.8000+130.1426/+30.8003+130.1400/+30.8021+130.1200/+30.8053+130.1000/+30.8133+130.0800/+30.8200+130.0693/+30.8223+130.0600/+30.8268+130.0400/+30.8392+130.0200/+30.8400+130.0183/+30.8432+130.0000/+30.8486+129.9800/+30.8570+129.9600/+30.8600+129.9545/+30.8682+129.9400/+30.8800+129.9255/+30.8842+129.9200/+30.8925+129.9000/+30.9000+129.8874/+30.9059+129.8800/+30.9183+129.8600/+30.9200+129.8580/+30.9325+129.8400/+30.9400+129.8284/+30.9470+129.8200/+30.9600+129.8084/+30.9732+129.8000/+30.9800+129.7897/+30.9868+129.7800/+31.0000+129.7632/+31.0132+129.7600/+31.0200+129.7576/+31.0400+129.7423/+31.0558+129.7600/ 北西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8103+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7897+130.2800/+30.8000+130.2666/+30.8103+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-18T21:00:00+09:00 2026-08-19T00:00:00+09:00 降灰 70 +31.0008+129.6800/+31.0072+129.7000/+31.0058+129.7200/+31.0048+129.7400/+31.0000+129.7592/+30.9996+129.7600/+30.9904+129.7800/+30.9869+129.8000/+30.9827+129.8200/+30.9800+129.8362/+30.9795+129.8400/+30.9708+129.8600/+30.9600+129.8757/+30.9583+129.8800/+30.9540+129.9000/+30.9508+129.9200/+30.9433+129.9400/+30.9400+129.9481/+30.9368+129.9600/+30.9314+129.9800/+30.9261+130.0000/+30.9200+130.0157/+30.9181+130.0200/+30.9000+130.0347/+30.8988+130.0400/+30.8953+130.0600/+30.8882+130.0800/+30.8800+130.0928/+30.8793+130.1000/+30.8777+130.1200/+30.8733+130.1400/+30.8600+130.1568/+30.8597+130.1600/+30.8590+130.1800/+30.8575+130.2000/+30.8424+130.2200/+30.8400+130.2224/+30.8398+130.2400/+30.8397+130.2600/+30.8389+130.2800/+30.8240+130.3000/+30.8200+130.3040/+30.8048+130.3200/+30.8000+130.3248/+30.7921+130.3200/+30.7800+130.3199/+30.7603+130.3000/+30.7602+130.2800/+30.7612+130.2600/+30.7734+130.2400/+30.7800+130.2325/+30.7802+130.2200/+30.7805+130.2000/+30.7813+130.1800/+30.7834+130.1600/+30.7874+130.1400/+30.7944+130.1200/+30.8000+130.1098/+30.8011+130.1000/+30.8040+130.0800/+30.8088+130.0600/+30.8200+130.0413/+30.8203+130.0400/+30.8214+130.0200/+30.8263+130.0000/+30.8308+129.9800/+30.8400+129.9635/+30.8407+129.9600/+30.8453+129.9400/+30.8531+129.9200/+30.8600+129.9063/+30.8635+129.9000/+30.8732+129.8800/+30.8800+129.8658/+30.8817+129.8600/+30.8879+129.8400/+30.8948+129.8200/+30.9000+129.8089/+30.9071+129.8000/+30.9178+129.7800/+30.9200+129.7753/+30.9276+129.7600/+30.9382+129.7400/+30.9400+129.7372/+30.9600+129.7224/+30.9690+129.7200/+30.9800+129.7139/+30.9885+129.7000/+30.9991+129.6800/+31.0000+129.6780/+31.0008+129.6800/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8116+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7884+130.2800/+30.8000+130.2651/+30.8116+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、１８日０９時から１２時までは火口から北西方向、１８日２１時から２４時までは火口から西方向に降灰が予想されます。 　１８日６時から１８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 　１８日０６時から０９時まで　北西　　　　　　４０ｋｍ　　３ｋｍ　　　　　 　１８日０９時から１２時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日１２時から１５時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日１５時から１８時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　１８日１８時から２１時まで　北西　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　１８日２１時から２４時まで　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。