2026-08-17T05:00:00Z 通常 気象庁本庁 気象庁 2026-08-17T14:00:00+09:00 2026-08-17T15:00:00+09:00 2026-08-18T09:00:00+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 2026-08-17T15:00:00+09:00 2026-08-17T18:00:00+09:00 降灰 70 +31.0877+130.0600/+31.0821+130.0800/+31.0800+130.0816/+31.0647+130.1000/+31.0600+130.1044/+31.0433+130.1200/+31.0400+130.1230/+31.0200+130.1366/+31.0174+130.1400/+31.0000+130.1537/+30.9944+130.1600/+30.9800+130.1743/+30.9750+130.1800/+30.9600+130.1941/+30.9518+130.2000/+30.9400+130.2106/+30.9297+130.2200/+30.9200+130.2284/+30.9053+130.2400/+30.9000+130.2451/+30.8800+130.2597/+30.8798+130.2600/+30.8600+130.2791/+30.8595+130.2800/+30.8400+130.2993/+30.8398+130.3000/+30.8200+130.3198/+30.8193+130.3200/+30.8000+130.3393/+30.7800+130.3375/+30.7625+130.3200/+30.7602+130.3000/+30.7658+130.2800/+30.7800+130.2658/+30.7804+130.2600/+30.8000+130.2401/+30.8001+130.2400/+30.8030+130.2200/+30.8200+130.2020/+30.8211+130.2000/+30.8333+130.1800/+30.8400+130.1732/+30.8486+130.1600/+30.8600+130.1476/+30.8681+130.1400/+30.8800+130.1283/+30.8913+130.1200/+30.9000+130.1102/+30.9135+130.1000/+30.9200+130.0938/+30.9400+130.0831/+30.9469+130.0800/+30.9600+130.0727/+30.9777+130.0600/+30.9800+130.0577/+31.0000+130.0500/+31.0200+130.0449/+31.0400+130.0434/+31.0600+130.0424/+31.0800+130.0454/+31.0877+130.0600/ 北西 40 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8191+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.8000+130.2801/+30.8191+130.3000/ 北西 1 鹿児島県三島村 4630300 2026-08-17T18:00:00+09:00 2026-08-17T21:00:00+09:00 降灰 70 +31.1111+129.8800/+31.1163+129.9000/+31.1103+129.9200/+31.1046+129.9400/+31.1000+129.9526/+31.0980+129.9600/+31.0892+129.9800/+31.0810+130.0000/+31.0800+130.0015/+31.0701+130.0200/+31.0611+130.0400/+31.0600+130.0416/+31.0494+130.0600/+31.0400+130.0770/+31.0388+130.0800/+31.0277+130.1000/+31.0200+130.1075/+31.0074+130.1200/+31.0000+130.1248/+30.9868+130.1400/+30.9800+130.1472/+30.9719+130.1600/+30.9600+130.1716/+30.9513+130.1800/+30.9400+130.1910/+30.9344+130.2000/+30.9200+130.2143/+30.9155+130.2200/+30.9000+130.2354/+30.8967+130.2400/+30.8800+130.2566/+30.8781+130.2600/+30.8600+130.2780/+30.8592+130.2800/+30.8400+130.2992/+30.8398+130.3000/+30.8200+130.3198/+30.8185+130.3200/+30.8000+130.3385/+30.7800+130.3335/+30.7665+130.3200/+30.7605+130.3000/+30.7754+130.2800/+30.7800+130.2754/+30.7805+130.2600/+30.8000+130.2404/+30.8002+130.2400/+30.8032+130.2200/+30.8200+130.2026/+30.8211+130.2000/+30.8287+130.1800/+30.8400+130.1679/+30.8428+130.1600/+30.8555+130.1400/+30.8600+130.1347/+30.8673+130.1200/+30.8800+130.1035/+30.8818+130.1000/+30.8922+130.0800/+30.9000+130.0706/+30.9080+130.0600/+30.9200+130.0423/+30.9219+130.0400/+30.9317+130.0200/+30.9400+130.0094/+30.9471+130.0000/+30.9600+129.9877/+30.9689+129.9800/+30.9800+129.9648/+30.9847+129.9600/+31.0000+129.9413/+31.0019+129.9400/+31.0200+129.9258/+31.0261+129.9200/+31.0400+129.9053/+31.0487+129.9000/+31.0600+129.8914/+31.0800+129.8825/+31.0830+129.8800/+31.1000+129.8601/+31.1111+129.8800/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8006+130.2800/+30.8195+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7998+130.2800/+30.8000+130.2798/+30.8006+130.2800/ 北西 3 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 +31.1114+129.9400/+31.1131+129.9600/+31.1018+129.9800/+31.1000+129.9839/+31.0934+130.0000/+31.0800+130.0158/+31.0775+130.0200/+31.0650+130.0400/+31.0600+130.0466/+31.0504+130.0600/+31.0400+130.0719/+31.0325+130.0800/+31.0200+130.0888/+31.0131+130.1000/+31.0000+130.1118/+30.9878+130.1200/+30.9800+130.1270/+30.9688+130.1400/+30.9600+130.1489/+30.9491+130.1600/+30.9400+130.1692/+30.9348+130.1800/+30.9200+130.1948/+30.9168+130.2000/+30.9000+130.2173/+30.8988+130.2200/+30.8800+130.2391/+30.8796+130.2400/+30.8612+130.2600/+30.8600+130.2612/+30.8571+130.2800/+30.8400+130.2971/+30.8397+130.3000/+30.8200+130.3197/+30.8185+130.3200/+30.8000+130.3385/+30.7800+130.3335/+30.7665+130.3200/+30.7605+130.3000/+30.7758+130.2800/+30.7800+130.2758/+30.7806+130.2600/+30.8000+130.2405/+30.8003+130.2400/+30.8086+130.2200/+30.8200+130.2085/+30.8223+130.2000/+30.8400+130.1811/+30.8407+130.1800/+30.8498+130.1600/+30.8600+130.1487/+30.8643+130.1400/+30.8800+130.1219/+30.8815+130.1200/+30.8979+130.1000/+30.9000+130.0975/+30.9100+130.0800/+30.9200+130.0690/+30.9295+130.0600/+30.9400+130.0402/+30.9401+130.0400/+30.9558+130.0200/+30.9600+130.0162/+30.9752+130.0000/+30.9800+129.9952/+31.0000+129.9810/+31.0014+129.9800/+31.0200+129.9619/+31.0234+129.9600/+31.0400+129.9453/+31.0513+129.9400/+31.0600+129.9352/+31.0800+129.9210/+31.1000+129.9252/+31.1114+129.9400/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8045+130.2800/+30.8195+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7976+130.2800/+30.8000+130.2774/+30.8045+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 +31.0933+129.9200/+31.0997+129.9400/+31.0983+129.9600/+31.0817+129.9800/+31.0800+129.9816/+31.0721+130.0000/+31.0618+130.0200/+31.0600+130.0218/+31.0431+130.0400/+31.0400+130.0440/+31.0265+130.0600/+31.0200+130.0659/+31.0130+130.0800/+31.0000+130.0943/+30.9916+130.1000/+30.9800+130.1084/+30.9726+130.1200/+30.9600+130.1329/+30.9561+130.1400/+30.9400+130.1571/+30.9383+130.1600/+30.9200+130.1790/+30.9195+130.1800/+30.9077+130.2000/+30.9000+130.2078/+30.8958+130.2200/+30.8800+130.2359/+30.8787+130.2400/+30.8600+130.2590/+30.8598+130.2600/+30.8527+130.2800/+30.8400+130.2927/+30.8396+130.3000/+30.8200+130.3196/+30.8184+130.3200/+30.8000+130.3384/+30.7800+130.3336/+30.7664+130.3200/+30.7604+130.3000/+30.7681+130.2800/+30.7800+130.2681/+30.7803+130.2600/+30.8000+130.2402/+30.8002+130.2400/+30.8028+130.2200/+30.8200+130.2025/+30.8209+130.2000/+30.8291+130.1800/+30.8400+130.1686/+30.8428+130.1600/+30.8600+130.1405/+30.8603+130.1400/+30.8678+130.1200/+30.8800+130.1064/+30.8842+130.1000/+30.9000+130.0802/+30.9002+130.0800/+30.9131+130.0600/+30.9200+130.0521/+30.9278+130.0400/+30.9376+130.0200/+30.9400+130.0173/+30.9598+130.0000/+30.9600+129.9999/+30.9800+129.9801/+30.9801+129.9800/+31.0000+129.9607/+31.0010+129.9600/+31.0200+129.9413/+31.0216+129.9400/+31.0400+129.9276/+31.0600+129.9214/+31.0624+129.9200/+31.0800+129.9121/+31.0933+129.9200/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8031+130.2800/+30.8194+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7983+130.2800/+30.8000+130.2781/+30.8031+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 +31.1215+129.9600/+31.1240+129.9800/+31.1246+130.0000/+31.1200+130.0043/+31.1076+130.0200/+31.1000+130.0301/+31.0929+130.0400/+31.0800+130.0498/+31.0698+130.0600/+31.0600+130.0695/+31.0527+130.0800/+31.0400+130.0922/+31.0316+130.1000/+31.0200+130.1112/+31.0000+130.1197/+30.9997+130.1200/+30.9806+130.1400/+30.9800+130.1406/+30.9632+130.1600/+30.9600+130.1631/+30.9400+130.1787/+30.9389+130.1800/+30.9200+130.1991/+30.9194+130.2000/+30.9000+130.2198/+30.8999+130.2200/+30.8800+130.2399/+30.8800+130.2400/+30.8682+130.2600/+30.8600+130.2682/+30.8569+130.2800/+30.8400+130.2969/+30.8397+130.3000/+30.8200+130.3197/+30.8186+130.3200/+30.8000+130.3386/+30.7800+130.3342/+30.7658+130.3200/+30.7604+130.3000/+30.7671+130.2800/+30.7800+130.2671/+30.7804+130.2600/+30.8000+130.2402/+30.8002+130.2400/+30.8041+130.2200/+30.8200+130.2035/+30.8216+130.2000/+30.8394+130.1800/+30.8400+130.1794/+30.8485+130.1600/+30.8600+130.1476/+30.8663+130.1400/+30.8800+130.1247/+30.8847+130.1200/+30.9000+130.1040/+30.9038+130.1000/+30.9200+130.0834/+30.9247+130.0800/+30.9400+130.0651/+30.9462+130.0600/+30.9600+130.0445/+30.9653+130.0400/+30.9800+130.0239/+30.9865+130.0200/+31.0000+130.0108/+31.0199+130.0000/+31.0200+129.9999/+31.0400+129.9806/+31.0416+129.9800/+31.0600+129.9722/+31.0800+129.9620/+31.1000+129.9612/+31.1093+129.9600/+31.1200+129.9589/+31.1215+129.9600/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8193+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.8000+130.2801/+30.8193+130.3000/ 北西 1 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 +31.0353+129.9000/+31.0388+129.9200/+31.0266+129.9400/+31.0200+129.9591/+31.0198+129.9600/+31.0079+129.9800/+31.0000+129.9949/+30.9979+130.0000/+30.9886+130.0200/+30.9800+130.0311/+30.9738+130.0400/+30.9600+130.0537/+30.9569+130.0600/+30.9454+130.0800/+30.9400+130.0867/+30.9354+130.1000/+30.9200+130.1179/+30.9192+130.1200/+30.9126+130.1400/+30.9000+130.1539/+30.8978+130.1600/+30.8887+130.1800/+30.8800+130.1893/+30.8783+130.2000/+30.8684+130.2200/+30.8600+130.2287/+30.8591+130.2400/+30.8492+130.2600/+30.8400+130.2692/+30.8399+130.2800/+30.8372+130.3000/+30.8200+130.3172/+30.8166+130.3200/+30.8000+130.3366/+30.7800+130.3305/+30.7695+130.3200/+30.7602+130.3000/+30.7609+130.2800/+30.7800+130.2609/+30.7801+130.2600/+30.7806+130.2400/+30.7904+130.2200/+30.8000+130.2102/+30.8007+130.2000/+30.8035+130.1800/+30.8200+130.1603/+30.8201+130.1600/+30.8231+130.1400/+30.8324+130.1200/+30.8400+130.1105/+30.8426+130.1000/+30.8511+130.0800/+30.8600+130.0681/+30.8627+130.0600/+30.8720+130.0400/+30.8800+130.0297/+30.8863+130.0200/+30.8899+130.0000/+30.9000+129.9882/+30.9046+129.9800/+30.9158+129.9600/+30.9200+129.9542/+30.9343+129.9400/+30.9400+129.9317/+30.9493+129.9200/+30.9600+129.9072/+30.9737+129.9000/+30.9800+129.8961/+31.0000+129.8809/+31.0200+129.8845/+31.0353+129.9000/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8059+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7952+130.2800/+30.8000+130.2744/+30.8059+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に降灰が予想されます。 　１７日１５時から１８日９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１５時から１８時まで　北西　　　　　　４０ｋｍ　　１ｋｍ　　　　　 　１７日１８時から２１時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１７日２１時から２４時まで　北西　　　　　　５０ｋｍ　　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　　１ｋｍ　　　　　 　１８日０６時から０９時まで　北西　　　　　　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。