2026-08-19T17:00:00Z 通常 気象庁本庁 気象庁 2026-08-20T02:00:00+09:00 2026-08-20T03:00:00+09:00 2026-08-20T21:00:00+09:00 511 発表 1 降灰予報 1.1_0 　現在、諏訪之瀬島は噴火警戒レベル２（火口周辺規制）です。諏訪之瀬島で噴火が発生した場合には、２０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 諏訪之瀬島 511 降灰 70 鹿児島県十島村 4630400 小さな噴石の落下 75 鹿児島県十島村 4630400 降灰予報（定時） 06 諏訪之瀬島 511 +2938.30+12942.83+796/ 降灰 70 鹿児島県十島村 4630400 小さな噴石の落下 75 鹿児島県十島村 4630400 2026-08-20T03:00:00+09:00 2026-08-20T06:00:00+09:00 降灰 70 +29.9767+129.1600/+29.9710+129.1800/+29.9693+129.2000/+29.9607+129.2200/+29.9600+129.2215/+29.9505+129.2400/+29.9419+129.2600/+29.9400+129.2635/+29.9344+129.2800/+29.9300+129.3000/+29.9200+129.3103/+29.9139+129.3200/+29.9060+129.3400/+29.9000+129.3506/+29.8928+129.3600/+29.8800+129.3749/+29.8778+129.3800/+29.8662+129.4000/+29.8600+129.4090/+29.8546+129.4200/+29.8432+129.4400/+29.8400+129.4451/+29.8299+129.4600/+29.8200+129.4666/+29.8094+129.4800/+29.8000+129.4902/+29.7968+129.5000/+29.7812+129.5200/+29.7800+129.5213/+29.7755+129.5400/+29.7600+129.5569/+29.7590+129.5600/+29.7529+129.5800/+29.7400+129.5934/+29.7388+129.6000/+29.7273+129.6200/+29.7200+129.6287/+29.7192+129.6400/+29.7000+129.6597/+29.7000+129.6600/+29.6993+129.6800/+29.6800+129.6997/+29.6800+129.7000/+29.6792+129.7200/+29.6600+129.7392/+29.6400+129.7397/+29.6203+129.7200/+29.6201+129.7000/+29.6201+129.6800/+29.6228+129.6600/+29.6400+129.6428/+29.6403+129.6400/+29.6426+129.6200/+29.6600+129.6016/+29.6603+129.6000/+29.6629+129.5800/+29.6793+129.5600/+29.6800+129.5592/+29.6834+129.5400/+29.6942+129.5200/+29.7000+129.5129/+29.7037+129.5000/+29.7139+129.4800/+29.7200+129.4727/+29.7261+129.4600/+29.7375+129.4400/+29.7381+129.4200/+29.7400+129.4166/+29.7521+129.4000/+29.7600+129.3925/+29.7677+129.3800/+29.7784+129.3600/+29.7800+129.3576/+29.7909+129.3400/+29.8000+129.3300/+29.8081+129.3200/+29.8179+129.3000/+29.8200+129.2971/+29.8400+129.2807/+29.8407+129.2800/+29.8524+129.2600/+29.8600+129.2482/+29.8669+129.2400/+29.8800+129.2225/+29.8821+129.2200/+29.9000+129.2026/+29.9061+129.2000/+29.9200+129.1884/+29.9273+129.1800/+29.9392+129.1600/+29.9400+129.1587/+29.9600+129.1439/+29.9767+129.1600/ 北西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6617+129.6800/+29.6755+129.7000/+29.6600+129.7155/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6808/+29.6584+129.6800/+29.6600+129.6785/+29.6617+129.6800/ 北西 4 鹿児島県十島村 4630400 2026-08-20T06:00:00+09:00 2026-08-20T09:00:00+09:00 降灰 70 +29.9807+129.1800/+29.9891+129.2000/+29.9800+129.2123/+29.9764+129.2200/+29.9706+129.2400/+29.9630+129.2600/+29.9600+129.2646/+29.9483+129.2800/+29.9400+129.2946/+29.9382+129.3000/+29.9275+129.3200/+29.9200+129.3280/+29.9136+129.3400/+29.9042+129.3600/+29.9000+129.3684/+29.8912+129.3800/+29.8800+129.3886/+29.8739+129.4000/+29.8617+129.4200/+29.8600+129.4220/+29.8496+129.4400/+29.8400+129.4571/+29.8384+129.4600/+29.8200+129.4730/+29.8157+129.4800/+29.8007+129.5000/+29.8000+129.5007/+29.7921+129.5200/+29.7800+129.5333/+29.7779+129.5400/+29.7643+129.5600/+29.7600+129.5647/+29.7562+129.5800/+29.7400+129.5970/+29.7393+129.6000/+29.7333+129.6200/+29.7200+129.6333/+29.7192+129.6400/+29.7021+129.6600/+29.7000+129.6621/+29.6994+129.6800/+29.6800+129.6997/+29.6800+129.7000/+29.6793+129.7200/+29.6600+129.7393/+29.6400+129.7397/+29.6203+129.7200/+29.6200+129.7000/+29.6201+129.6800/+29.6248+129.6600/+29.6400+129.6447/+29.6404+129.6400/+29.6447+129.6200/+29.6600+129.6045/+29.6608+129.6000/+29.6654+129.5800/+29.6800+129.5642/+29.6812+129.5600/+29.6862+129.5400/+29.7000+129.5240/+29.7015+129.5200/+29.7080+129.5000/+29.7200+129.4851/+29.7223+129.4800/+29.7343+129.4600/+29.7400+129.4516/+29.7442+129.4400/+29.7489+129.4200/+29.7600+129.4092/+29.7650+129.4000/+29.7768+129.3800/+29.7800+129.3744/+29.7884+129.3600/+29.8000+129.3430/+29.8022+129.3400/+29.8199+129.3200/+29.8200+129.3198/+29.8339+129.3000/+29.8400+129.2946/+29.8531+129.2800/+29.8600+129.2682/+29.8667+129.2600/+29.8800+129.2411/+29.8808+129.2400/+29.9000+129.2205/+29.9013+129.2200/+29.9200+129.2080/+29.9264+129.2000/+29.9400+129.1835/+29.9487+129.1800/+29.9600+129.1745/+29.9800+129.1795/+29.9807+129.1800/ 北西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6747+129.7000/+29.6600+129.7147/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6808/+29.6600+129.6808/+29.6747+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-20T09:00:00+09:00 2026-08-20T12:00:00+09:00 降灰 70 +30.0007+129.1000/+30.0000+129.1014/+29.9980+129.1000/+30.0000+129.0986/+30.0007+129.1000/ +29.9724+129.1400/+29.9720+129.1600/+29.9680+129.1800/+29.9654+129.2000/+29.9600+129.2088/+29.9503+129.2200/+29.9400+129.2356/+29.9382+129.2400/+29.9322+129.2600/+29.9254+129.2800/+29.9200+129.2943/+29.9178+129.3000/+29.9016+129.3200/+29.9000+129.3237/+29.8884+129.3400/+29.8800+129.3464/+29.8741+129.3600/+29.8691+129.3800/+29.8600+129.3910/+29.8536+129.4000/+29.8429+129.4200/+29.8400+129.4241/+29.8247+129.4400/+29.8200+129.4450/+29.8172+129.4600/+29.8000+129.4762/+29.7973+129.4800/+29.7830+129.5000/+29.7800+129.5031/+29.7767+129.5200/+29.7600+129.5390/+29.7597+129.5400/+29.7567+129.5600/+29.7400+129.5781/+29.7396+129.5800/+29.7370+129.6000/+29.7200+129.6176/+29.7197+129.6200/+29.7176+129.6400/+29.7000+129.6577/+29.6999+129.6600/+29.6990+129.6800/+29.6800+129.6991/+29.6799+129.7000/+29.6792+129.7200/+29.6600+129.7392/+29.6400+129.7397/+29.6203+129.7200/+29.6200+129.7000/+29.6201+129.6800/+29.6247+129.6600/+29.6400+129.6447/+29.6403+129.6400/+29.6444+129.6200/+29.6600+129.6042/+29.6606+129.6000/+29.6645+129.5800/+29.6800+129.5637/+29.6808+129.5600/+29.6856+129.5400/+29.7000+129.5235/+29.7010+129.5200/+29.7069+129.5000/+29.7200+129.4849/+29.7218+129.4800/+29.7290+129.4600/+29.7400+129.4463/+29.7422+129.4400/+29.7400+129.4223/+29.7387+129.4200/+29.7400+129.4180/+29.7569+129.4000/+29.7600+129.3973/+29.7666+129.3800/+29.7750+129.3600/+29.7800+129.3526/+29.7870+129.3400/+29.8000+129.3250/+29.8044+129.3200/+29.8113+129.3000/+29.8200+129.2855/+29.8248+129.2800/+29.8400+129.2613/+29.8413+129.2600/+29.8535+129.2400/+29.8600+129.2322/+29.8684+129.2200/+29.8800+129.2011/+29.8806+129.2000/+29.8952+129.1800/+29.9000+129.1756/+29.9200+129.1646/+29.9244+129.1600/+29.9367+129.1400/+29.9400+129.1349/+29.9600+129.1245/+29.9724+129.1400/ 北西 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6613+129.6800/+29.6725+129.7000/+29.6600+129.7125/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6809/+29.6587+129.6800/+29.6600+129.6786/+29.6613+129.6800/ 北西 4 鹿児島県十島村 4630400 2026-08-20T12:00:00+09:00 2026-08-20T15:00:00+09:00 降灰 70 +30.0045+129.0800/+30.0132+129.1000/+30.0049+129.1200/+30.0000+129.1308/+29.9915+129.1400/+29.9835+129.1600/+29.9800+129.1690/+29.9769+129.1800/+29.9729+129.2000/+29.9611+129.2200/+29.9600+129.2214/+29.9455+129.2400/+29.9400+129.2503/+29.9369+129.2600/+29.9304+129.2800/+29.9240+129.3000/+29.9200+129.3029/+29.9071+129.3200/+29.9000+129.3377/+29.8986+129.3400/+29.8800+129.3569/+29.8784+129.3600/+29.8736+129.3800/+29.8600+129.3980/+29.8588+129.4000/+29.8506+129.4200/+29.8400+129.4353/+29.8365+129.4400/+29.8200+129.4584/+29.8196+129.4600/+29.8000+129.4785/+29.7992+129.4800/+29.7932+129.5000/+29.7800+129.5141/+29.7784+129.5200/+29.7695+129.5400/+29.7600+129.5500/+29.7585+129.5600/+29.7449+129.5800/+29.7400+129.5850/+29.7384+129.6000/+29.7200+129.6193/+29.7199+129.6200/+29.7187+129.6400/+29.7000+129.6589/+29.6999+129.6600/+29.6994+129.6800/+29.6800+129.6995/+29.6800+129.7000/+29.6792+129.7200/+29.6600+129.7392/+29.6400+129.7397/+29.6203+129.7200/+29.6200+129.7000/+29.6202+129.6800/+29.6265+129.6600/+29.6400+129.6465/+29.6404+129.6400/+29.6463+129.6200/+29.6600+129.6060/+29.6608+129.6000/+29.6667+129.5800/+29.6800+129.5658/+29.6814+129.5600/+29.6879+129.5400/+29.7000+129.5263/+29.7021+129.5200/+29.7117+129.5000/+29.7200+129.4895/+29.7232+129.4800/+29.7375+129.4600/+29.7400+129.4568/+29.7468+129.4400/+29.7472+129.4200/+29.7600+129.4076/+29.7630+129.4000/+29.7735+129.3800/+29.7800+129.3691/+29.7845+129.3600/+29.7956+129.3400/+29.8000+129.3348/+29.8088+129.3200/+29.8167+129.3000/+29.8200+129.2951/+29.8398+129.2800/+29.8400+129.2798/+29.8506+129.2600/+29.8600+129.2432/+29.8621+129.2400/+29.8726+129.2200/+29.8800+129.2084/+29.8861+129.2000/+29.9000+129.1824/+29.9037+129.1800/+29.9200+129.1632/+29.9220+129.1600/+29.9331+129.1400/+29.9400+129.1306/+29.9579+129.1200/+29.9600+129.1185/+29.9795+129.1000/+29.9800+129.0993/+29.9952+129.0800/+30.0000+129.0739/+30.0045+129.0800/ 北西 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6732+129.7000/+29.6600+129.7132/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6809/+29.6600+129.6803/+29.6732+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-20T15:00:00+09:00 2026-08-20T18:00:00+09:00 降灰 70 +30.0068+129.1400/+30.0034+129.1600/+30.0000+129.1653/+29.9878+129.1600/+29.9914+129.1400/+30.0000+129.1257/+30.0068+129.1400/ +29.9748+129.1800/+29.9784+129.2000/+29.9718+129.2200/+29.9674+129.2400/+29.9600+129.2582/+29.9591+129.2600/+29.9451+129.2800/+29.9400+129.2900/+29.9374+129.3000/+29.9202+129.3200/+29.9200+129.3202/+29.9123+129.3400/+29.9028+129.3600/+29.9000+129.3663/+29.8901+129.3800/+29.8800+129.3876/+29.8737+129.4000/+29.8620+129.4200/+29.8600+129.4225/+29.8518+129.4400/+29.8408+129.4600/+29.8400+129.4611/+29.8200+129.4742/+29.8165+129.4800/+29.8000+129.4989/+29.7996+129.5000/+29.7937+129.5200/+29.7800+129.5345/+29.7784+129.5400/+29.7652+129.5600/+29.7600+129.5653/+29.7573+129.5800/+29.7400+129.5981/+29.7395+129.6000/+29.7356+129.6200/+29.7200+129.6358/+29.7195+129.6400/+29.7090+129.6600/+29.7000+129.6690/+29.6996+129.6800/+29.6800+129.6997/+29.6800+129.7000/+29.6793+129.7200/+29.6600+129.7393/+29.6400+129.7397/+29.6203+129.7200/+29.6200+129.7000/+29.6202+129.6800/+29.6400+129.6601/+29.6400+129.6600/+29.6409+129.6400/+29.6600+129.6204/+29.6602+129.6200/+29.6623+129.6000/+29.6800+129.5812/+29.6804+129.5800/+29.6856+129.5600/+29.7000+129.5442/+29.7014+129.5400/+29.7117+129.5200/+29.7200+129.5103/+29.7235+129.5000/+29.7400+129.4803/+29.7401+129.4800/+29.7468+129.4600/+29.7600+129.4448/+29.7620+129.4400/+29.7643+129.4200/+29.7749+129.4000/+29.7800+129.3937/+29.7911+129.3800/+29.8000+129.3640/+29.8021+129.3600/+29.8108+129.3400/+29.8200+129.3260/+29.8266+129.3200/+29.8400+129.3047/+29.8429+129.3000/+29.8554+129.2800/+29.8600+129.2706/+29.8690+129.2600/+29.8800+129.2429/+29.8821+129.2400/+29.9000+129.2213/+29.9036+129.2200/+29.9200+129.2100/+29.9276+129.2000/+29.9400+129.1823/+29.9454+129.1800/+29.9600+129.1717/+29.9748+129.1800/ 北西 70 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6727+129.7000/+29.6600+129.7127/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6810/+29.6600+129.6818/+29.6727+129.7000/ 北西 2 鹿児島県十島村 4630400 2026-08-20T18:00:00+09:00 2026-08-20T21:00:00+09:00 降灰 70 +29.9707+129.1800/+29.9769+129.2000/+29.9704+129.2200/+29.9655+129.2400/+29.9600+129.2526/+29.9555+129.2600/+29.9400+129.2794/+29.9397+129.2800/+29.9328+129.3000/+29.9200+129.3135/+29.9162+129.3200/+29.9093+129.3400/+29.9003+129.3600/+29.9000+129.3606/+29.8866+129.3800/+29.8800+129.3850/+29.8730+129.4000/+29.8601+129.4200/+29.8600+129.4201/+29.8514+129.4400/+29.8400+129.4597/+29.8398+129.4600/+29.8200+129.4732/+29.8150+129.4800/+29.8000+129.4971/+29.7990+129.5000/+29.7927+129.5200/+29.7800+129.5336/+29.7783+129.5400/+29.7648+129.5600/+29.7600+129.5650/+29.7575+129.5800/+29.7400+129.5980/+29.7396+129.6000/+29.7360+129.6200/+29.7200+129.6361/+29.7195+129.6400/+29.7094+129.6600/+29.7000+129.6694/+29.6997+129.6800/+29.6800+129.6998/+29.6800+129.7000/+29.6794+129.7200/+29.6600+129.7394/+29.6400+129.7398/+29.6202+129.7200/+29.6200+129.7000/+29.6202+129.6800/+29.6400+129.6601/+29.6401+129.6600/+29.6412+129.6400/+29.6600+129.6209/+29.6603+129.6200/+29.6638+129.6000/+29.6800+129.5832/+29.6809+129.5800/+29.6892+129.5600/+29.7000+129.5483/+29.7021+129.5400/+29.7152+129.5200/+29.7200+129.5148/+29.7248+129.5000/+29.7400+129.4821/+29.7408+129.4800/+29.7485+129.4600/+29.7600+129.4472/+29.7626+129.4400/+29.7648+129.4200/+29.7751+129.4000/+29.7800+129.3938/+29.7894+129.3800/+29.8000+129.3631/+29.8021+129.3600/+29.8115+129.3400/+29.8200+129.3273/+29.8281+129.3200/+29.8400+129.3059/+29.8440+129.3000/+29.8583+129.2800/+29.8600+129.2764/+29.8717+129.2600/+29.8800+129.2459/+29.8837+129.2400/+29.9000+129.2219/+29.9047+129.2200/+29.9200+129.2087/+29.9256+129.2000/+29.9398+129.1800/+29.9400+129.1798/+29.9600+129.1713/+29.9707+129.1800/ 北西 60 鹿児島県十島村 4630400 小さな噴石の落下 75 1 +29.6734+129.7000/+29.6600+129.7134/+29.6588+129.7200/+29.6400+129.7388/+29.6212+129.7200/+29.6212+129.7000/+29.6400+129.6812/+29.6600+129.6817/+29.6734+129.7000/ 北西 2 鹿児島県十島村 4630400 　現在、諏訪之瀬島は噴火警戒レベル２（火口周辺規制）です。諏訪之瀬島で噴火が発生した場合には、２０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。 　２０日３時から２０日２１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 　２０日０３時から０６時まで　北西　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　２０日０６時から０９時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　２０日０９時から１２時まで　北西　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　２０日１２時から１５時まで　北西　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　２０日１５時から１８時まで　北西　　　　　　７０ｋｍ　　２ｋｍ　　　　　 　２０日１８時から２１時まで　北西　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　 　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：十島村 　 　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。