2026-07-27T23:00:00Z 通常 気象庁本庁 気象庁 2026-07-28T08:00:00+09:00 2026-07-28T09:00:00+09:00 2026-07-29T03:00:00+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、２８日０９時から１２時までは火口から北方向、２８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 岩手県二戸市 0321300 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 秋田県秋田市 0520100 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 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 岩手県二戸市 0321300 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 秋田県秋田市 0520100 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 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-07-28T09:00:00+09:00 2026-07-28T12:00:00+09:00 降灰 70 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北 50 岩手県二戸市 0321300 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 小さな噴石の落下 75 1 +39.8797+140.9800/+39.8600+140.9989/+39.8412+140.9800/+39.8600+140.9612/+39.8797+140.9800/ 北東 1 岩手県八幡平市 0321400 2026-07-28T12:00:00+09:00 2026-07-28T15:00:00+09:00 降灰 70 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北 40 岩手県八幡平市 0321400 岩手県雫石町 0330100 秋田県鹿角市 0520900 小さな噴石の落下 75 1 +39.8765+140.9600/+39.8796+140.9800/+39.8600+140.9988/+39.8412+140.9800/+39.8476+140.9600/+39.8600+140.9476/+39.8765+140.9600/ 北 1 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-07-28T15:00:00+09:00 2026-07-28T18:00:00+09:00 降灰 70 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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 小さな噴石の落下 75 1 +39.8860+140.9600/+39.8800+140.9687/+39.8794+140.9800/+39.8600+140.9988/+39.8400+140.9932/+39.8268+140.9800/+39.8400+140.9668/+39.8417+140.9600/+39.8600+140.9417/+39.8800+140.9539/+39.8860+140.9600/ 北 3 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-07-28T18:00:00+09:00 2026-07-28T21:00:00+09:00 降灰 70 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北西 40 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 +39.8834+140.9600/+39.8800+140.9629/+39.8788+140.9800/+39.8600+140.9988/+39.8410+140.9800/+39.8400+140.9725/+39.8282+140.9600/+39.8400+140.9475/+39.8600+140.9406/+39.8800+140.9562/+39.8834+140.9600/ 北西 3 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-07-28T21:00:00+09:00 2026-07-29T00:00:00+09:00 降灰 70 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北西 40 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 +39.8798+140.9600/+39.8788+140.9800/+39.8600+140.9988/+39.8400+140.9970/+39.8230+140.9800/+39.8212+140.9600/+39.8400+140.9407/+39.8600+140.9403/+39.8798+140.9600/ 南西 2 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-07-29T00:00:00+09:00 2026-07-29T03:00:00+09:00 降灰 70 +39.8607+140.8600/+39.8624+140.8800/+39.8702+140.9000/+39.8764+140.9200/+39.8794+140.9400/+39.8799+140.9600/+39.8798+140.9800/+39.8600+140.9998/+39.8400+140.9999/+39.8201+140.9800/+39.8200+140.9797/+39.8002+140.9600/+39.8000+140.9586/+39.7815+140.9400/+39.7800+140.9344/+39.7656+140.9200/+39.7600+140.9059/+39.7545+140.9000/+39.7415+140.8800/+39.7405+140.8600/+39.7400+140.8566/+39.7261+140.8400/+39.7200+140.8203/+39.7198+140.8200/+39.7082+140.8000/+39.7050+140.7800/+39.7059+140.7600/+39.7200+140.7466/+39.7400+140.7446/+39.7600+140.7469/+39.7800+140.7423/+39.8000+140.7402/+39.8200+140.7440/+39.8400+140.7498/+39.8428+140.7600/+39.8489+140.7800/+39.8533+140.8000/+39.8554+140.8200/+39.8566+140.8400/+39.8600+140.8590/+39.8607+140.8600/ +39.8203+140.6400/+39.8200+140.6404/+39.8000+140.6571/+39.7960+140.6600/+39.7800+140.6710/+39.7671+140.6800/+39.7600+140.6853/+39.7488+140.7000/+39.7400+140.7117/+39.7207+140.7200/+39.7200+140.7203/+39.7188+140.7200/+39.7000+140.7176/+39.6851+140.7000/+39.6844+140.6800/+39.6819+140.6600/+39.6866+140.6400/+39.6920+140.6200/+39.7000+140.6043/+39.7063+140.6000/+39.7200+140.5910/+39.7362+140.5800/+39.7397+140.5600/+39.7200+140.5440/+39.7183+140.5400/+39.7200+140.5350/+39.7400+140.5241/+39.7519+140.5200/+39.7600+140.5177/+39.7645+140.5200/+39.7800+140.5371/+39.7828+140.5400/+39.8000+140.5592/+39.8003+140.5600/+39.8054+140.5800/+39.8074+140.6000/+39.8155+140.6200/+39.8200+140.6384/+39.8203+140.6400/ +39.8071+140.7000/+39.8000+140.7027/+39.7800+140.7097/+39.7718+140.7000/+39.7800+140.6897/+39.8000+140.6910/+39.8071+140.7000/ 南西 40 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/+39.8400+140.9988/+39.8212+140.9800/+39.8210+140.9600/+39.8400+140.9406/+39.8600+140.9409/+39.8788+140.9600/ 南西 2 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、２８日０９時から１２時までは火口から北方向、２８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。 　２８日９時から２９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 　２８日０９時から１２時まで　北　　　　　　　５０ｋｍ　　１ｋｍ　　　　　 　２８日１２時から１５時まで　北　　　　　　　４０ｋｍ　　１ｋｍ　　　　　 　２８日１５時から１８時まで　北西　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　２８日１８時から２１時まで　北西　　　　　　４０ｋｍ　　３ｋｍ　　　　　 　２８日２１時から２４時まで　北西　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　２９日００時から０３時まで　南西　　　　　　４０ｋｍ　　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。 　岩手県　：八幡平市、雫石町、二戸市、滝沢市 　秋田県　：鹿角市、大館市、北秋田市、仙北市、秋田市 　 　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。