2026-04-03T11:00:00Z 通常 気象庁本庁 気象庁 2026-04-03T20:00:00+09:00 2026-04-03T21:00:00+09:00 2026-04-04T15:00:00+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、３日２１時から２４時までは火口から北東方向、４日０９時から１２時までは火口から北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 青森県三戸町 0244100 青森県五戸町 0244200 青森県田子町 0244300 青森県南部町 0244500 青森県新郷村 0245000 岩手県久慈市 0320700 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 岩手県葛巻町 0330200 岩手県岩手町 0330300 岩手県岩泉町 0348300 岩手県九戸村 0350600 岩手県一戸町 0352400 小さな噴石の落下 75 岩手県八幡平市 0321400 岩手県滝沢市 0321600 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 青森県三戸町 0244100 青森県五戸町 0244200 青森県田子町 0244300 青森県南部町 0244500 青森県新郷村 0245000 岩手県久慈市 0320700 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 岩手県葛巻町 0330200 岩手県岩手町 0330300 岩手県岩泉町 0348300 岩手県九戸村 0350600 岩手県一戸町 0352400 小さな噴石の落下 75 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 2026-04-03T21:00:00+09:00 2026-04-04T00:00:00+09:00 降灰 70 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北東 60 岩手県久慈市 0320700 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 岩手県葛巻町 0330200 岩手県岩手町 0330300 岩手県岩泉町 0348300 岩手県一戸町 0352400 小さな噴石の落下 75 1 +39.8788+140.9800/+39.8731+141.0000/+39.8600+141.0153/+39.8489+141.0000/+39.8400+140.9946/+39.8254+140.9800/+39.8400+140.9654/+39.8600+140.9612/+39.8788+140.9800/ 東 3 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 2026-04-04T00:00:00+09:00 2026-04-04T03:00:00+09:00 降灰 70 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北東 60 岩手県久慈市 0320700 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 岩手県葛巻町 0330200 岩手県岩手町 0330300 岩手県九戸村 0350600 岩手県一戸町 0352400 小さな噴石の落下 75 1 +39.8794+140.9800/+39.8791+141.0000/+39.8600+141.0177/+39.8457+141.0000/+39.8412+140.9800/+39.8600+140.9612/+39.8794+140.9800/ 北東 3 岩手県八幡平市 0321400 岩手県滝沢市 0321600 2026-04-04T03:00:00+09:00 2026-04-04T06:00:00+09:00 降灰 70 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北東 60 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 岩手県岩手町 0330300 岩手県一戸町 0352400 小さな噴石の落下 75 1 +39.8829+140.9800/+39.8824+141.0000/+39.8800+141.0023/+39.8600+141.0130/+39.8470+141.0000/+39.8412+140.9800/+39.8600+140.9612/+39.8800+140.9775/+39.8829+140.9800/ 北東 4 岩手県八幡平市 0321400 岩手県滝沢市 0321600 2026-04-04T06:00:00+09:00 2026-04-04T09:00:00+09:00 降灰 70 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北 70 青森県三戸町 0244100 青森県五戸町 0244200 青森県田子町 0244300 青森県南部町 0244500 青森県新郷村 0245000 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 +39.8925+140.9800/+39.8851+141.0000/+39.8800+141.0030/+39.8600+141.0091/+39.8509+141.0000/+39.8412+140.9800/+39.8600+140.9612/+39.8800+140.9705/+39.8925+140.9800/ 北東 4 岩手県八幡平市 0321400 岩手県滝沢市 0321600 2026-04-04T09:00:00+09:00 2026-04-04T12:00:00+09:00 降灰 70 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北 70 青森県三戸町 0244100 青森県田子町 0244300 青森県新郷村 0245000 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 +39.8953+140.9800/+39.8800+140.9947/+39.8600+140.9988/+39.8412+140.9800/+39.8600+140.9612/+39.8800+140.9692/+39.8953+140.9800/ 北 3 岩手県八幡平市 0321400 2026-04-04T12:00:00+09:00 2026-04-04T15:00:00+09:00 降灰 70 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北 70 青森県三戸町 0244100 青森県五戸町 0244200 青森県田子町 0244300 青森県新郷村 0245000 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 +39.8982+140.9800/+39.8972+141.0000/+39.8800+141.0068/+39.8732+141.0000/+39.8600+140.9988/+39.8412+140.9800/+39.8600+140.9612/+39.8800+140.9657/+39.8982+140.9800/ 北東 4 岩手県八幡平市 0321400 　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、３日２１時から２４時までは火口から北東方向、４日０９時から１２時までは火口から北方向に降灰が予想されます。 　３日２１時から４日１５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 　０３日２１時から２４時まで　北東　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０４日００時から０３時まで　北東　　　　　　６０ｋｍ　　３ｋｍ　　　　　 　０４日０３時から０６時まで　北東　　　　　　６０ｋｍ　　４ｋｍ　　　　　 　０４日０６時から０９時まで　北　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　０４日０９時から１２時まで　北　　　　　　　７０ｋｍ　　３ｋｍ　　　　　 　０４日１２時から１５時まで　北　　　　　　　７０ｋｍ　　４ｋｍ　　　　　 　 　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　：久慈市、八幡平市、滝沢市、雫石町、葛巻町、岩手町、岩泉町、一戸町、二戸市、九戸村 　青森県　：三戸町、五戸町、田子町、南部町、新郷村 　 　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。