2026-08-10T23:00:00Z 通常 気象庁本庁 気象庁 2026-08-11T08:00:00+09:00 2026-08-11T09:00:00+09:00 2026-08-12T03:00:00+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、１１日０９時から１２時までは火口から南西方向、１１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 岩手山 207 降灰 70 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県秋田市 0520100 秋田県大仙市 0521200 秋田県北秋田市 0521300 秋田県仙北市 0521500 秋田県上小阿仁村 0532700 秋田県五城目町 0536100 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 秋田県秋田市 0520100 秋田県大仙市 0521200 秋田県北秋田市 0521300 秋田県仙北市 0521500 秋田県上小阿仁村 0532700 秋田県五城目町 0536100 小さな噴石の落下 75 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-11T09:00:00+09:00 2026-08-11T12:00:00+09:00 降灰 70 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南西 70 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県大仙市 0521200 秋田県仙北市 0521500 小さな噴石の落下 75 1 +39.8757+140.9800/+39.8600+140.9957/+39.8400+140.9983/+39.8217+140.9800/+39.8207+140.9600/+39.8200+140.9456/+39.8159+140.9400/+39.8200+140.9216/+39.8217+140.9200/+39.8400+140.9165/+39.8435+140.9200/+39.8547+140.9400/+39.8588+140.9600/+39.8600+140.9643/+39.8757+140.9800/ 南西 5 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-11T12:00:00+09:00 2026-08-11T15:00:00+09:00 降灰 70 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南西 70 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県大仙市 0521200 秋田県仙北市 0521500 小さな噴石の落下 75 1 +39.8722+140.9800/+39.8600+140.9922/+39.8432+140.9800/+39.8400+140.9796/+39.8200+140.9657/+39.8143+140.9600/+39.8144+140.9400/+39.8194+140.9200/+39.8200+140.9190/+39.8400+140.9109/+39.8451+140.9200/+39.8557+140.9400/+39.8589+140.9600/+39.8600+140.9675/+39.8722+140.9800/ 南西 6 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-11T15:00:00+09:00 2026-08-11T18:00:00+09:00 降灰 70 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+39.7031+140.2600/+39.7067+140.2800/+39.7106+140.3000/+39.7038+140.3200/+39.7000+140.3275/+39.6967+140.3200/+39.6874+140.3000/+39.6911+140.2800/+39.6953+140.2600/+39.7000+140.2471/+39.7031+140.2600/ 西 60 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県秋田市 0520100 秋田県大仙市 0521200 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 +39.8607+140.9200/+39.8734+140.9400/+39.8788+140.9600/+39.8786+140.9800/+39.8600+140.9986/+39.8400+140.9988/+39.8212+140.9800/+39.8210+140.9600/+39.8226+140.9400/+39.8368+140.9200/+39.8400+140.9164/+39.8600+140.9192/+39.8607+140.9200/ 西 5 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-11T18:00:00+09:00 2026-08-11T21:00:00+09:00 降灰 70 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西 60 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県秋田市 0520100 秋田県北秋田市 0521300 秋田県仙北市 0521500 秋田県上小阿仁村 0532700 秋田県五城目町 0536100 小さな噴石の落下 75 1 +39.8719+140.9400/+39.8788+140.9600/+39.8788+140.9800/+39.8600+140.9988/+39.8412+140.9800/+39.8400+140.9788/+39.8212+140.9600/+39.8272+140.9400/+39.8400+140.9229/+39.8600+140.9229/+39.8719+140.9400/ 西 3 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-11T21:00:00+09:00 2026-08-12T00:00:00+09:00 降灰 70 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西 60 岩手県八幡平市 0321400 岩手県雫石町 0330100 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 +39.8711+140.9400/+39.8788+140.9600/+39.8788+140.9800/+39.8600+140.9988/+39.8412+140.9800/+39.8400+140.9788/+39.8212+140.9600/+39.8400+140.9401/+39.8417+140.9400/+39.8600+140.9233/+39.8711+140.9400/ 北西 3 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-08-12T00:00:00+09:00 2026-08-12T03:00:00+09:00 降灰 70 +40.0202+140.3800/+40.0236+140.4000/+40.0200+140.4158/+40.0192+140.4200/+40.0134+140.4400/+40.0083+140.4600/+40.0014+140.4800/+40.0098+140.5000/+40.0150+140.5200/+40.0163+140.5400/+40.0101+140.5600/+40.0048+140.5800/+40.0000+140.5880/+39.9961+140.6000/+39.9919+140.6200/+39.9862+140.6400/+39.9800+140.6521/+39.9600+140.6598/+39.9599+140.6600/+39.9582+140.6800/+39.9558+140.7000/+39.9480+140.7200/+39.9400+140.7305/+39.9389+140.7400/+39.9376+140.7600/+39.9350+140.7800/+39.9275+140.8000/+39.9200+140.8097/+39.9195+140.8200/+39.9189+140.8400/+39.9177+140.8600/+39.9070+140.8800/+39.9000+140.8872/+39.8998+140.9000/+39.8998+140.9200/+39.8992+140.9400/+39.8800+140.9599/+39.8800+140.9600/+39.8797+140.9800/+39.8600+140.9997/+39.8400+140.9995/+39.8205+140.9800/+39.8201+140.9600/+39.8202+140.9400/+39.8214+140.9200/+39.8305+140.9000/+39.8400+140.8895/+39.8402+140.8800/+39.8408+140.8600/+39.8428+140.8400/+39.8511+140.8200/+39.8600+140.8090/+39.8610+140.8000/+39.8632+140.7800/+39.8648+140.7600/+39.8722+140.7400/+39.8783+140.7200/+39.8787+140.7000/+39.8800+140.6970/+39.8816+140.6800/+39.8830+140.6600/+39.8861+140.6400/+39.8861+140.6200/+39.9000+140.6054/+39.9017+140.6000/+39.9055+140.5800/+39.9125+140.5600/+39.9200+140.5468/+39.9229+140.5400/+39.9313+140.5200/+39.9389+140.5000/+39.9400+140.4985/+39.9600+140.4826/+39.9800+140.4814/+39.9909+140.4800/+39.9800+140.4695/+39.9764+140.4600/+39.9732+140.4400/+39.9656+140.4200/+39.9650+140.4000/+39.9704+140.3800/+39.9770+140.3600/+39.9800+140.3499/+39.9833+140.3400/+39.9886+140.3200/+39.9947+140.3000/+39.9991+140.2800/+40.0000+140.2765/+40.0006+140.2800/+40.0039+140.3000/+40.0082+140.3200/+40.0117+140.3400/+40.0158+140.3600/+40.0200+140.3790/+40.0202+140.3800/ 西 60 岩手県八幡平市 0321400 岩手県雫石町 0330100 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 +39.8712+140.9400/+39.8788+140.9600/+39.8788+140.9800/+39.8600+140.9988/+39.8412+140.9800/+39.8400+140.9788/+39.8212+140.9600/+39.8400+140.9404/+39.8455+140.9400/+39.8600+140.9273/+39.8712+140.9400/ 北西 3 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、１１日０９時から１２時までは火口から南西方向、１１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。 　１１日９時から１２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 　１１日０９時から１２時まで　南西　　　　　　７０ｋｍ　　５ｋｍ　　　　　 　１１日１２時から１５時まで　南西　　　　　　７０ｋｍ　　６ｋｍ　　　　　 　１１日１５時から１８時まで　西　　　　　　　６０ｋｍ　　５ｋｍ　　　　　 　１１日１８時から２１時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　１１日２１時から２４時まで　西　　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　１２日００時から０３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。 　岩手県　：八幡平市、雫石町 　秋田県　：大仙市、仙北市、秋田市、北秋田市、上小阿仁村、五城目町 　 　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。 　強風のため、遠方まで小さな噴石が流されるおそれがあります。