2026-08-12T05:00:00Z 通常 気象庁本庁 気象庁 2026-08-12T14:00:00+09:00 2026-08-12T15:00:00+09:00 2026-08-13T09:00:00+09:00 207 発表 1 降灰予報 1.1_0 　現在、岩手山は噴火警戒レベル２（火口周辺規制）です。岩手山で噴火が発生した場合には、１２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 岩手山 207 降灰 70 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県大館市 0520400 秋田県鹿角市 0520900 秋田県北秋田市 0521300 秋田県仙北市 0521500 秋田県上小阿仁村 0532700 小さな噴石の落下 75 岩手県八幡平市 0321400 岩手県雫石町 0330100 降灰予報（定時） 06 岩手山 207 +3951.15+14100.07+2038/ 降灰 70 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県大館市 0520400 秋田県鹿角市 0520900 秋田県北秋田市 0521300 秋田県仙北市 0521500 秋田県上小阿仁村 0532700 小さな噴石の落下 75 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-12T15:00:00+09:00 2026-08-12T18:00:00+09:00 降灰 70 +40.0620+140.5200/+40.0651+140.5400/+40.0667+140.5600/+40.0630+140.5800/+40.0600+140.5845/+40.0515+140.6000/+40.0432+140.6200/+40.0400+140.6264/+40.0346+140.6400/+40.0200+140.6580/+40.0193+140.6600/+40.0116+140.6800/+40.0000+140.6955/+39.9989+140.7000/+39.9930+140.7200/+39.9807+140.7400/+39.9800+140.7408/+39.9763+140.7600/+39.9626+140.7800/+39.9600+140.7837/+39.9582+140.8000/+39.9537+140.8200/+39.9400+140.8364/+39.9396+140.8400/+39.9381+140.8600/+39.9277+140.8800/+39.9200+140.8883/+39.9194+140.9000/+39.9153+140.9200/+39.9000+140.9353/+39.8999+140.9400/+39.8987+140.9600/+39.8800+140.9787/+39.8798+140.9800/+39.8600+140.9998/+39.8400+140.9997/+39.8203+140.9800/+39.8201+140.9600/+39.8210+140.9400/+39.8400+140.9210/+39.8401+140.9200/+39.8406+140.9000/+39.8452+140.8800/+39.8600+140.8639/+39.8605+140.8600/+39.8625+140.8400/+39.8688+140.8200/+39.8800+140.8060/+39.8813+140.8000/+39.8853+140.7800/+39.8940+140.7600/+39.9000+140.7520/+39.9031+140.7400/+39.9057+140.7200/+39.9116+140.7000/+39.9200+140.6889/+39.9238+140.6800/+39.9345+140.6600/+39.9355+140.6400/+39.9400+140.6307/+39.9467+140.6200/+39.9600+140.6079/+39.9653+140.6000/+39.9746+140.5800/+39.9800+140.5714/+39.9863+140.5600/+39.9969+140.5400/+40.0000+140.5362/+40.0168+140.5200/+40.0200+140.5122/+40.0258+140.5000/+40.0379+140.4800/+40.0400+140.4727/+40.0436+140.4800/+40.0566+140.5000/+40.0600+140.5109/+40.0620+140.5200/ 北西 50 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県鹿角市 0520900 秋田県北秋田市 0521300 秋田県仙北市 0521500 小さな噴石の落下 75 1 +39.8635+140.9400/+39.8788+140.9600/+39.8788+140.9800/+39.8600+140.9988/+39.8412+140.9800/+39.8412+140.9600/+39.8582+140.9400/+39.8600+140.9375/+39.8635+140.9400/ 北西 3 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-12T18:00:00+09:00 2026-08-12T21:00:00+09:00 降灰 70 +40.0833+140.4800/+40.0800+140.4976/+40.0784+140.5000/+40.0744+140.5200/+40.0736+140.5400/+40.0733+140.5600/+40.0701+140.5800/+40.0607+140.6000/+40.0600+140.6013/+40.0538+140.6200/+40.0463+140.6400/+40.0400+140.6513/+40.0358+140.6600/+40.0200+140.6799/+40.0200+140.6800/+40.0093+140.7000/+40.0000+140.7138/+39.9987+140.7200/+39.9921+140.7400/+39.9800+140.7572/+39.9795+140.7600/+39.9754+140.7800/+39.9668+140.8000/+39.9600+140.8076/+39.9583+140.8200/+39.9536+140.8400/+39.9400+140.8555/+39.9396+140.8600/+39.9370+140.8800/+39.9200+140.8976/+39.9198+140.9000/+39.9188+140.9200/+39.9000+140.9390/+39.8999+140.9400/+39.8994+140.9600/+39.8800+140.9794/+39.8798+140.9800/+39.8600+140.9998/+39.8400+140.9995/+39.8205+140.9800/+39.8201+140.9600/+39.8218+140.9400/+39.8400+140.9218/+39.8401+140.9200/+39.8413+140.9000/+39.8577+140.8800/+39.8600+140.8776/+39.8617+140.8600/+39.8705+140.8400/+39.8800+140.8282/+39.8814+140.8200/+39.8972+140.8000/+39.9000+140.7946/+39.9010+140.7800/+39.9029+140.7600/+39.9099+140.7400/+39.9173+140.7200/+39.9200+140.7158/+39.9234+140.7000/+39.9319+140.6800/+39.9400+140.6684/+39.9446+140.6600/+39.9452+140.6400/+39.9600+140.6217/+39.9607+140.6200/+39.9706+140.6000/+39.9800+140.5835/+39.9821+140.5800/+39.9927+140.5600/+40.0000+140.5484/+40.0055+140.5400/+40.0198+140.5200/+40.0200+140.5194/+40.0290+140.5000/+40.0400+140.4856/+40.0600+140.4816/+40.0624+140.4800/+40.0800+140.4728/+40.0833+140.4800/ +40.0623+140.4600/+40.0600+140.4725/+40.0578+140.4600/+40.0600+140.4507/+40.0623+140.4600/ 北西 50 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県鹿角市 0520900 秋田県北秋田市 0521300 秋田県仙北市 0521500 小さな噴石の落下 75 1 +39.8788+140.9600/+39.8788+140.9800/+39.8600+140.9988/+39.8411+140.9800/+39.8412+140.9600/+39.8600+140.9400/+39.8788+140.9600/ 北 1 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-12T21:00:00+09:00 2026-08-13T00:00:00+09:00 降灰 70 +40.1012+140.3800/+40.1076+140.4000/+40.1100+140.4200/+40.1117+140.4400/+40.1128+140.4600/+40.1136+140.4800/+40.1092+140.5000/+40.1150+140.5200/+40.1160+140.5400/+40.1163+140.5600/+40.1124+140.5800/+40.1092+140.6000/+40.1048+140.6200/+40.1000+140.6273/+40.0900+140.6400/+40.0800+140.6503/+40.0759+140.6600/+40.0680+140.6800/+40.0600+140.6931/+40.0563+140.7000/+40.0533+140.7200/+40.0400+140.7326/+40.0353+140.7400/+40.0214+140.7600/+40.0200+140.7615/+40.0137+140.7800/+40.0000+140.7956/+39.9983+140.8000/+39.9890+140.8200/+39.9800+140.8300/+39.9784+140.8400/+39.9638+140.8600/+39.9600+140.8638/+39.9570+140.8800/+39.9400+140.8973/+39.9395+140.9000/+39.9313+140.9200/+39.9200+140.9313/+39.9184+140.9400/+39.9000+140.9584/+39.8998+140.9600/+39.8800+140.9799/+39.8799+140.9800/+39.8600+140.9999/+39.8400+140.9995/+39.8205+140.9800/+39.8202+140.9600/+39.8400+140.9401/+39.8400+140.9400/+39.8409+140.9200/+39.8600+140.9008/+39.8603+140.9000/+39.8663+140.8800/+39.8800+140.8659/+39.8816+140.8600/+39.8990+140.8400/+39.9000+140.8390/+39.9053+140.8200/+39.9200+140.8035/+39.9216+140.8000/+39.9296+140.7800/+39.9400+140.7661/+39.9420+140.7600/+39.9494+140.7400/+39.9600+140.7247/+39.9619+140.7200/+39.9753+140.7000/+39.9800+140.6944/+39.9874+140.6800/+39.9934+140.6600/+40.0000+140.6409/+40.0002+140.6400/+40.0071+140.6200/+40.0200+140.6052/+40.0222+140.6000/+40.0282+140.5800/+40.0400+140.5613/+40.0412+140.5600/+40.0500+140.5400/+40.0600+140.5251/+40.0645+140.5200/+40.0714+140.5000/+40.0800+140.4827/+40.0825+140.4800/+40.0888+140.4600/+40.0910+140.4400/+40.0933+140.4200/+40.0957+140.4000/+40.0994+140.3800/+40.1000+140.3773/+40.1012+140.3800/ 北西 60 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県大館市 0520400 秋田県鹿角市 0520900 秋田県北秋田市 0521300 秋田県仙北市 0521500 秋田県上小阿仁村 0532700 小さな噴石の落下 75 1 +39.8797+140.9600/+39.8788+140.9800/+39.8600+140.9988/+39.8412+140.9800/+39.8412+140.9600/+39.8600+140.9403/+39.8797+140.9600/ 北 1 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-13T00:00:00+09:00 2026-08-13T03:00:00+09:00 降灰 70 +40.1338+140.5200/+40.1368+140.5400/+40.1355+140.5600/+40.1285+140.5800/+40.1200+140.5954/+40.1190+140.6000/+40.1141+140.6200/+40.1056+140.6400/+40.1000+140.6498/+40.0944+140.6600/+40.0800+140.6784/+40.0794+140.6800/+40.0736+140.7000/+40.0673+140.7200/+40.0600+140.7329/+40.0538+140.7400/+40.0400+140.7490/+40.0363+140.7600/+40.0200+140.7793/+40.0197+140.7800/+40.0107+140.8000/+40.0000+140.8109/+39.9971+140.8200/+39.9818+140.8400/+39.9800+140.8418/+39.9776+140.8600/+39.9600+140.8782/+39.9595+140.8800/+39.9497+140.9000/+39.9400+140.9097/+39.9388+140.9200/+39.9200+140.9388/+39.9196+140.9400/+39.9000+140.9596/+39.8999+140.9600/+39.8800+140.9800/+39.8799+140.9800/+39.8600+140.9999/+39.8400+140.9995/+39.8205+140.9800/+39.8203+140.9600/+39.8400+140.9403/+39.8401+140.9400/+39.8600+140.9200/+39.8649+140.9000/+39.8800+140.8849/+39.8816+140.8800/+39.9000+140.8614/+39.9006+140.8600/+39.9144+140.8400/+39.9200+140.8343/+39.9236+140.8200/+39.9400+140.8022/+39.9411+140.8000/+39.9483+140.7800/+39.9600+140.7672/+39.9626+140.7600/+39.9800+140.7407/+39.9805+140.7400/+39.9871+140.7200/+40.0000+140.7049/+40.0027+140.7000/+40.0102+140.6800/+40.0200+140.6647/+40.0221+140.6600/+40.0258+140.6400/+40.0312+140.6200/+40.0400+140.6054/+40.0431+140.6000/+40.0490+140.5800/+40.0565+140.5600/+40.0600+140.5498/+40.0649+140.5400/+40.0800+140.5240/+40.0870+140.5200/+40.0948+140.5000/+40.0962+140.4800/+40.1000+140.4630/+40.1115+140.4800/+40.1172+140.5000/+40.1200+140.5006/+40.1338+140.5200/ 北西 50 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県大館市 0520400 秋田県鹿角市 0520900 秋田県北秋田市 0521300 秋田県仙北市 0521500 小さな噴石の落下 75 1 +39.8796+140.9600/+39.8788+140.9800/+39.8600+140.9988/+39.8412+140.9800/+39.8412+140.9600/+39.8600+140.9404/+39.8796+140.9600/ 北 1 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-13T03:00:00+09:00 2026-08-13T06:00:00+09:00 降灰 70 +40.1099+140.5200/+40.1166+140.5400/+40.1177+140.5600/+40.1134+140.5800/+40.1108+140.6000/+40.1078+140.6200/+40.1000+140.6357/+40.0981+140.6400/+40.0843+140.6600/+40.0800+140.6661/+40.0769+140.6800/+40.0714+140.7000/+40.0625+140.7200/+40.0600+140.7241/+40.0400+140.7390/+40.0395+140.7400/+40.0290+140.7600/+40.0200+140.7696/+40.0163+140.7800/+40.0000+140.7978/+39.9990+140.8000/+39.9901+140.8200/+39.9800+140.8310/+39.9788+140.8400/+39.9721+140.8600/+39.9600+140.8723/+39.9587+140.8800/+39.9400+140.8993/+39.9398+140.9000/+39.9375+140.9200/+39.9200+140.9375/+39.9194+140.9400/+39.9000+140.9594/+39.8999+140.9600/+39.8800+140.9799/+39.8799+140.9800/+39.8600+140.9999/+39.8400+140.9996/+39.8204+140.9800/+39.8202+140.9600/+39.8400+140.9402/+39.8401+140.9400/+39.8494+140.9200/+39.8600+140.9094/+39.8622+140.9000/+39.8800+140.8822/+39.8809+140.8800/+39.9000+140.8604/+39.9002+140.8600/+39.9041+140.8400/+39.9200+140.8236/+39.9214+140.8200/+39.9345+140.8000/+39.9400+140.7944/+39.9431+140.7800/+39.9560+140.7600/+39.9600+140.7558/+39.9668+140.7400/+39.9800+140.7249/+39.9825+140.7200/+39.9927+140.7000/+40.0000+140.6923/+40.0056+140.6800/+40.0092+140.6600/+40.0200+140.6456/+40.0217+140.6400/+40.0270+140.6200/+40.0358+140.6000/+40.0400+140.5911/+40.0455+140.5800/+40.0522+140.5600/+40.0590+140.5400/+40.0600+140.5379/+40.0728+140.5200/+40.0800+140.5045/+40.1000+140.5132/+40.1099+140.5200/ 北西 50 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県大館市 0520400 秋田県鹿角市 0520900 秋田県北秋田市 0521300 秋田県仙北市 0521500 小さな噴石の落下 75 1 +39.8795+140.9600/+39.8788+140.9800/+39.8600+140.9988/+39.8405+140.9800/+39.8412+140.9600/+39.8600+140.9404/+39.8795+140.9600/ 北 1 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-13T06:00:00+09:00 2026-08-13T09:00:00+09:00 降灰 70 +40.1050+140.4800/+40.1021+140.5000/+40.1172+140.5200/+40.1115+140.5400/+40.1102+140.5600/+40.1068+140.5800/+40.1043+140.6000/+40.1000+140.6177/+40.0992+140.6200/+40.0835+140.6400/+40.0800+140.6441/+40.0760+140.6600/+40.0704+140.6800/+40.0613+140.7000/+40.0600+140.7025/+40.0562+140.7200/+40.0400+140.7353/+40.0366+140.7400/+40.0200+140.7588/+40.0195+140.7600/+40.0119+140.7800/+40.0000+140.7924/+39.9974+140.8000/+39.9800+140.8195/+39.9799+140.8200/+39.9774+140.8400/+39.9600+140.8584/+39.9597+140.8600/+39.9558+140.8800/+39.9400+140.8959/+39.9394+140.9000/+39.9247+140.9200/+39.9200+140.9247/+39.9186+140.9400/+39.9000+140.9586/+39.8999+140.9600/+39.8800+140.9799/+39.8799+140.9800/+39.8600+140.9999/+39.8400+140.9995/+39.8205+140.9800/+39.8202+140.9600/+39.8400+140.9402/+39.8401+140.9400/+39.8424+140.9200/+39.8600+140.9024/+39.8607+140.9000/+39.8800+140.8805/+39.8803+140.8800/+39.8851+140.8600/+39.9000+140.8449/+39.9018+140.8400/+39.9200+140.8206/+39.9203+140.8200/+39.9247+140.8000/+39.9400+140.7836/+39.9413+140.7800/+39.9458+140.7600/+39.9600+140.7441/+39.9621+140.7400/+39.9720+140.7200/+39.9800+140.7113/+39.9849+140.7000/+40.0000+140.6824/+40.0021+140.6800/+40.0006+140.6600/+40.0098+140.6400/+40.0200+140.6277/+40.0229+140.6200/+40.0293+140.6000/+40.0357+140.5800/+40.0400+140.5727/+40.0507+140.5600/+40.0586+140.5400/+40.0600+140.5370/+40.0690+140.5200/+40.0778+140.5000/+40.0800+140.4961/+40.0952+140.4800/+40.1000+140.4669/+40.1050+140.4800/ 北西 50 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県大館市 0520400 秋田県鹿角市 0520900 秋田県北秋田市 0521300 秋田県仙北市 0521500 小さな噴石の落下 75 1 +39.8793+140.9600/+39.8788+140.9800/+39.8600+140.9988/+39.8412+140.9800/+39.8412+140.9600/+39.8600+140.9403/+39.8793+140.9600/ 北 1 岩手県八幡平市 0321400 岩手県雫石町 0330100 　現在、岩手山は噴火警戒レベル２（火口周辺規制）です。岩手山で噴火が発生した場合には、１２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。 　１２日１５時から１３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 　１２日１５時から１８時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１２日１８時から２１時まで　北西　　　　　　５０ｋｍ　　１ｋｍ　　　　　 　１２日２１時から２４時まで　北西　　　　　　６０ｋｍ　　１ｋｍ　　　　　 　１３日００時から０３時まで　北西　　　　　　５０ｋｍ　　１ｋｍ　　　　　 　１３日０３時から０６時まで　北西　　　　　　５０ｋｍ　　１ｋｍ　　　　　 　１３日０６時から０９時まで　北西　　　　　　５０ｋｍ　　１ｋｍ　　　　　 　 　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。 　岩手県　：八幡平市、雫石町 　秋田県　：鹿角市、北秋田市、仙北市、大館市、上小阿仁村 　 　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。