2026-08-17T23:00:00Z 通常 気象庁本庁 気象庁 2026-08-18T08:00:00+09:00 2026-08-18T09:00:00+09:00 2026-08-19T03:00:00+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 2026-08-18T09:00:00+09:00 2026-08-18T12:00:00+09:00 降灰 70 +31.0849+129.9000/+31.0800+129.9144/+31.0787+129.9200/+31.0669+129.9400/+31.0600+129.9561/+31.0586+129.9600/+31.0432+129.9800/+31.0400+129.9826/+31.0276+130.0000/+31.0200+130.0085/+31.0147+130.0200/+31.0028+130.0400/+31.0000+130.0444/+30.9934+130.0600/+30.9800+130.0709/+30.9672+130.0800/+30.9600+130.0876/+30.9543+130.1000/+30.9400+130.1161/+30.9383+130.1200/+30.9247+130.1400/+30.9200+130.1448/+30.9150+130.1600/+30.9000+130.1757/+30.8989+130.1800/+30.8872+130.2000/+30.8800+130.2072/+30.8782+130.2200/+30.8600+130.2386/+30.8598+130.2400/+30.8584+130.2600/+30.8400+130.2784/+30.8399+130.2800/+30.8390+130.3000/+30.8200+130.3190/+30.8164+130.3200/+30.8000+130.3364/+30.7800+130.3289/+30.7711+130.3200/+30.7603+130.3000/+30.7626+130.2800/+30.7800+130.2626/+30.7801+130.2600/+30.7835+130.2400/+30.8000+130.2233/+30.8005+130.2200/+30.8062+130.2000/+30.8200+130.1853/+30.8210+130.1800/+30.8309+130.1600/+30.8400+130.1506/+30.8432+130.1400/+30.8600+130.1201/+30.8601+130.1200/+30.8683+130.1000/+30.8800+130.0868/+30.8826+130.0800/+30.8955+130.0600/+30.9000+130.0549/+30.9071+130.0400/+30.9110+130.0200/+30.9200+130.0065/+30.9266+130.0000/+30.9400+129.9853/+30.9452+129.9800/+30.9600+129.9614/+30.9611+129.9600/+30.9740+129.9400/+30.9800+129.9319/+30.9969+129.9200/+31.0000+129.9162/+31.0146+129.9000/+31.0200+129.8940/+31.0326+129.8800/+31.0400+129.8718/+31.0600+129.8677/+31.0796+129.8800/+31.0800+129.8807/+31.0849+129.9000/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8068+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7949+130.2800/+30.8000+130.2739/+30.8068+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 +31.0295+129.8400/+31.0318+129.8600/+31.0266+129.8800/+31.0200+129.8951/+31.0179+129.9000/+31.0091+129.9200/+31.0000+129.9325/+30.9961+129.9400/+30.9873+129.9600/+30.9800+129.9747/+30.9780+129.9800/+30.9665+130.0000/+30.9600+130.0082/+30.9562+130.0200/+30.9500+130.0400/+30.9400+130.0508/+30.9320+130.0600/+30.9257+130.0800/+30.9200+130.0877/+30.9155+130.1000/+30.9000+130.1188/+30.8996+130.1200/+30.8958+130.1400/+30.8832+130.1600/+30.8800+130.1639/+30.8781+130.1800/+30.8702+130.2000/+30.8600+130.2106/+30.8592+130.2200/+30.8568+130.2400/+30.8400+130.2574/+30.8399+130.2600/+30.8397+130.2800/+30.8329+130.3000/+30.8200+130.3129/+30.8147+130.3200/+30.8000+130.3347/+30.7800+130.3258/+30.7742+130.3200/+30.7602+130.3000/+30.7603+130.2800/+30.7633+130.2600/+30.7800+130.2422/+30.7801+130.2400/+30.7805+130.2200/+30.7815+130.2000/+30.7840+130.1800/+30.7899+130.1600/+30.8000+130.1455/+30.8010+130.1400/+30.8043+130.1200/+30.8112+130.1000/+30.8200+130.0802/+30.8201+130.0800/+30.8267+130.0600/+30.8400+130.0415/+30.8406+130.0400/+30.8444+130.0200/+30.8519+130.0000/+30.8600+129.9882/+30.8677+129.9800/+30.8800+129.9604/+30.8802+129.9600/+30.8948+129.9400/+30.9000+129.9347/+30.9113+129.9200/+30.9200+129.9058/+30.9256+129.9000/+30.9400+129.8849/+30.9448+129.8800/+30.9592+129.8600/+30.9600+129.8591/+30.9800+129.8406/+30.9805+129.8400/+31.0000+129.8220/+31.0200+129.8308/+31.0295+129.8400/ 北西 50 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8099+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7920+130.2800/+30.8000+130.2703/+30.8099+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 +31.0201+129.8000/+31.0200+129.8005/+31.0153+129.8200/+31.0129+129.8400/+31.0035+129.8600/+31.0000+129.8667/+30.9954+129.8800/+30.9880+129.9000/+30.9814+129.9200/+30.9800+129.9239/+30.9715+129.9400/+30.9600+129.9521/+30.9573+129.9600/+30.9513+129.9800/+30.9441+130.0000/+30.9400+130.0083/+30.9360+130.0200/+30.9200+130.0365/+30.9183+130.0400/+30.9133+130.0600/+30.9046+130.0800/+30.9000+130.0873/+30.8978+130.1000/+30.8925+130.1200/+30.8800+130.1380/+30.8796+130.1400/+30.8774+130.1600/+30.8715+130.1800/+30.8600+130.1935/+30.8595+130.2000/+30.8583+130.2200/+30.8490+130.2400/+30.8400+130.2491/+30.8399+130.2600/+30.8395+130.2800/+30.8282+130.3000/+30.8200+130.3082/+30.8112+130.3200/+30.8000+130.3312/+30.7817+130.3200/+30.7800+130.3200/+30.7602+130.3000/+30.7604+130.2800/+30.7683+130.2600/+30.7800+130.2480/+30.7801+130.2400/+30.7804+130.2200/+30.7813+130.2000/+30.7841+130.1800/+30.7929+130.1600/+30.8000+130.1489/+30.8006+130.1400/+30.8022+130.1200/+30.8049+130.1000/+30.8120+130.0800/+30.8200+130.0628/+30.8204+130.0600/+30.8242+130.0400/+30.8281+130.0200/+30.8321+130.0000/+30.8368+129.9800/+30.8400+129.9754/+30.8453+129.9600/+30.8530+129.9400/+30.8600+129.9244/+30.8625+129.9200/+30.8722+129.9000/+30.8800+129.8887/+30.8852+129.8800/+30.8939+129.8600/+30.9000+129.8504/+30.9094+129.8400/+30.9200+129.8250/+30.9247+129.8200/+30.9400+129.8038/+30.9463+129.8000/+30.9600+129.7890/+30.9754+129.7800/+30.9800+129.7768/+30.9984+129.7600/+31.0000+129.7585/+31.0022+129.7600/+31.0151+129.7800/+31.0200+129.7993/+31.0201+129.8000/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8119+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7902+130.2800/+30.8000+130.2679/+30.8119+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 +31.0423+129.7800/+31.0555+129.8000/+31.0443+129.8200/+31.0400+129.8344/+31.0389+129.8400/+31.0332+129.8600/+31.0239+129.8800/+31.0200+129.8879/+31.0130+129.9000/+31.0000+129.9169/+30.9987+129.9200/+30.9917+129.9400/+30.9803+129.9600/+30.9800+129.9604/+30.9632+129.9800/+30.9600+129.9844/+30.9556+130.0000/+30.9493+130.0200/+30.9400+130.0370/+30.9386+130.0400/+30.9200+130.0574/+30.9189+130.0600/+30.9133+130.0800/+30.9000+130.0980/+30.8994+130.1000/+30.8955+130.1200/+30.8812+130.1400/+30.8800+130.1414/+30.8781+130.1600/+30.8727+130.1800/+30.8600+130.1940/+30.8595+130.2000/+30.8584+130.2200/+30.8472+130.2400/+30.8400+130.2473/+30.8398+130.2600/+30.8395+130.2800/+30.8330+130.3000/+30.8200+130.3130/+30.8097+130.3200/+30.8000+130.3297/+30.7843+130.3200/+30.7800+130.3199/+30.7603+130.3000/+30.7603+130.2800/+30.7642+130.2600/+30.7800+130.2438/+30.7801+130.2400/+30.7804+130.2200/+30.7813+130.2000/+30.7845+130.1800/+30.7948+130.1600/+30.8000+130.1527/+30.8010+130.1400/+30.8035+130.1200/+30.8075+130.1000/+30.8200+130.0802/+30.8201+130.0800/+30.8235+130.0600/+30.8316+130.0400/+30.8385+130.0200/+30.8400+130.0177/+30.8452+130.0000/+30.8542+129.9800/+30.8600+129.9671/+30.8633+129.9600/+30.8756+129.9400/+30.8800+129.9332/+30.8885+129.9200/+30.8973+129.9000/+30.9000+129.8960/+30.9168+129.8800/+30.9200+129.8759/+30.9302+129.8600/+30.9400+129.8483/+30.9485+129.8400/+30.9600+129.8246/+30.9659+129.8200/+30.9800+129.8068/+30.9866+129.8000/+31.0000+129.7859/+31.0200+129.7837/+31.0358+129.7800/+31.0400+129.7783/+31.0423+129.7800/ 北西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8143+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7887+130.2800/+30.8000+130.2660/+30.8143+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 +31.0137+129.7200/+31.0188+129.7400/+31.0174+129.7600/+31.0121+129.7800/+31.0073+129.8000/+31.0000+129.8146/+30.9973+129.8200/+30.9929+129.8400/+30.9871+129.8600/+30.9808+129.8800/+30.9800+129.8829/+30.9741+129.9000/+30.9632+129.9200/+30.9600+129.9226/+30.9544+129.9400/+30.9504+129.9600/+30.9450+129.9800/+30.9400+129.9912/+30.9377+130.0000/+30.9328+130.0200/+30.9200+130.0318/+30.9138+130.0400/+30.9036+130.0600/+30.9000+130.0647/+30.8980+130.0800/+30.8946+130.1000/+30.8805+130.1200/+30.8800+130.1206/+30.8782+130.1400/+30.8748+130.1600/+30.8600+130.1776/+30.8598+130.1800/+30.8591+130.2000/+30.8567+130.2200/+30.8400+130.2375/+30.8399+130.2400/+30.8398+130.2600/+30.8394+130.2800/+30.8314+130.3000/+30.8200+130.3114/+30.8056+130.3200/+30.8000+130.3256/+30.7912+130.3200/+30.7800+130.3199/+30.7603+130.3000/+30.7604+130.2800/+30.7636+130.2600/+30.7800+130.2431/+30.7801+130.2400/+30.7803+130.2200/+30.7810+130.2000/+30.7835+130.1800/+30.7926+130.1600/+30.8000+130.1485/+30.8006+130.1400/+30.8023+130.1200/+30.8059+130.1000/+30.8138+130.0800/+30.8200+130.0680/+30.8213+130.0600/+30.8264+130.0400/+30.8350+130.0200/+30.8400+130.0077/+30.8411+130.0000/+30.8436+129.9800/+30.8487+129.9600/+30.8587+129.9400/+30.8600+129.9378/+30.8679+129.9200/+30.8781+129.9000/+30.8800+129.8972/+30.8878+129.8800/+30.8930+129.8600/+30.9000+129.8432/+30.9018+129.8400/+30.9125+129.8200/+30.9200+129.8075/+30.9245+129.8000/+30.9345+129.7800/+30.9400+129.7715/+30.9538+129.7600/+30.9600+129.7533/+30.9733+129.7400/+30.9800+129.7316/+30.9885+129.7200/+31.0000+129.7025/+31.0137+129.7200/ 西 60 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8141+130.2800/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7887+130.2800/+30.8000+130.2655/+30.8141+130.2800/ 北西 3 鹿児島県三島村 4630300 2026-08-19T00:00:00+09:00 2026-08-19T03:00:00+09:00 降灰 70 +31.0437+129.7400/+31.0401+129.7600/+31.0400+129.7602/+31.0336+129.7800/+31.0313+129.8000/+31.0259+129.8200/+31.0206+129.8400/+31.0200+129.8410/+31.0097+129.8600/+31.0000+129.8730/+30.9971+129.8800/+30.9918+129.9000/+30.9874+129.9200/+30.9816+129.9400/+30.9800+129.9424/+30.9648+129.9600/+30.9600+129.9656/+30.9561+129.9800/+30.9512+130.0000/+30.9433+130.0200/+30.9400+130.0251/+30.9259+130.0400/+30.9200+130.0443/+30.9158+130.0600/+30.9083+130.0800/+30.9000+130.0907/+30.8984+130.1000/+30.8947+130.1200/+30.8800+130.1377/+30.8796+130.1400/+30.8780+130.1600/+30.8699+130.1800/+30.8600+130.1907/+30.8595+130.2000/+30.8585+130.2200/+30.8443+130.2400/+30.8400+130.2446/+30.8399+130.2600/+30.8396+130.2800/+30.8336+130.3000/+30.8200+130.3136/+30.8060+130.3200/+30.8000+130.3260/+30.7905+130.3200/+30.7800+130.3198/+30.7603+130.3000/+30.7605+130.2800/+30.7746+130.2600/+30.7800+130.2546/+30.7801+130.2400/+30.7805+130.2200/+30.7822+130.2000/+30.7913+130.1800/+30.8000+130.1693/+30.8007+130.1600/+30.8025+130.1400/+30.8062+130.1200/+30.8184+130.1000/+30.8200+130.0973/+30.8225+130.0800/+30.8291+130.0600/+30.8384+130.0400/+30.8400+130.0366/+30.8433+130.0200/+30.8471+130.0000/+30.8562+129.9800/+30.8600+129.9721/+30.8644+129.9600/+30.8732+129.9400/+30.8800+129.9294/+30.8860+129.9200/+30.8917+129.9000/+30.9000+129.8848/+30.9038+129.8800/+30.9141+129.8600/+30.9200+129.8525/+30.9272+129.8400/+30.9365+129.8200/+30.9400+129.8135/+30.9531+129.8000/+30.9600+129.7903/+30.9671+129.7800/+30.9798+129.7600/+30.9800+129.7597/+30.9921+129.7400/+31.0000+129.7300/+31.0200+129.7292/+31.0400+129.7245/+31.0437+129.7400/ 北西 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/+30.7812+130.3000/+30.7884+130.2800/+30.8000+130.2652/+30.8150+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９時から１９日３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　　　　　 　１９日００時から０３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。