2026-05-13T02:00:00Z 通常 気象庁本庁 気象庁 2026-05-13T11:00:00+09:00 2026-05-13T12:00:00+09:00 2026-05-14T06:00:00+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、１３日２１時から２４時までは火口から南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 岩手県盛岡市 0320100 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 岩手県紫波町 0332100 岩手県矢巾町 0332200 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 岩手県盛岡市 0320100 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 岩手県紫波町 0332100 岩手県矢巾町 0332200 小さな噴石の落下 75 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-05-13T12:00:00+09:00 2026-05-13T15:00:00+09:00 降灰 70 +39.8844+140.9600/+39.8951+140.9800/+39.8930+141.0000/+39.8830+141.0200/+39.8800+141.0242/+39.8631+141.0400/+39.8600+141.0436/+39.8400+141.0575/+39.8211+141.0400/+39.8200+141.0384/+39.8092+141.0200/+39.8027+141.0000/+39.8024+140.9800/+39.8058+140.9600/+39.8200+140.9438/+39.8296+140.9400/+39.8400+140.9336/+39.8499+140.9400/+39.8600+140.9400/+39.8800+140.9556/+39.8844+140.9600/ 東 6 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 +39.8789+140.9800/+39.8600+140.9989/+39.8400+140.9988/+39.8212+140.9800/+39.8400+140.9606/+39.8600+140.9608/+39.8789+140.9800/ 東 1 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-05-13T15:00:00+09:00 2026-05-13T18:00:00+09:00 降灰 70 +39.8799+140.9600/+39.8800+140.9800/+39.8600+141.0000/+39.8573+141.0000/+39.8400+141.0168/+39.8292+141.0200/+39.8200+141.0295/+39.8077+141.0400/+39.8000+141.0498/+39.7838+141.0600/+39.7800+141.0636/+39.7600+141.0743/+39.7400+141.0776/+39.7200+141.0705/+39.7186+141.0600/+39.7200+141.0582/+39.7259+141.0400/+39.7257+141.0200/+39.7280+141.0000/+39.7400+140.9861/+39.7424+140.9800/+39.7600+140.9628/+39.7668+140.9600/+39.7800+140.9488/+39.8000+140.9412/+39.8200+140.9400/+39.8400+140.9400/+39.8600+140.9401/+39.8799+140.9600/ 南東 20 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 +39.8788+140.9800/+39.8600+140.9989/+39.8400+140.9989/+39.8210+140.9800/+39.8259+140.9600/+39.8400+140.9465/+39.8537+140.9600/+39.8600+140.9611/+39.8788+140.9800/ 南 2 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-05-13T18:00:00+09:00 2026-05-13T21:00:00+09:00 降灰 70 +39.8798+140.9600/+39.8799+140.9800/+39.8600+140.9999/+39.8400+141.0000/+39.8398+141.0000/+39.8200+141.0170/+39.8000+141.0160/+39.7800+141.0172/+39.7600+141.0173/+39.7400+141.0176/+39.7200+141.0185/+39.7000+141.0175/+39.6876+141.0200/+39.6800+141.0243/+39.6600+141.0224/+39.6525+141.0200/+39.6400+141.0188/+39.6200+141.0162/+39.6000+141.0113/+39.5820+141.0000/+39.5800+140.9950/+39.5721+140.9800/+39.5689+140.9600/+39.5766+140.9400/+39.5800+140.9353/+39.5878+140.9200/+39.6000+140.9126/+39.6200+140.9070/+39.6400+140.9019/+39.6505+140.9000/+39.6600+140.8962/+39.6800+140.8946/+39.6882+140.9000/+39.7000+140.9029/+39.7200+140.9070/+39.7398+140.9200/+39.7400+140.9200/+39.7600+140.9211/+39.7800+140.9235/+39.8000+140.9275/+39.8152+140.9400/+39.8200+140.9400/+39.8400+140.9400/+39.8600+140.9402/+39.8798+140.9600/ 南 30 岩手県盛岡市 0320100 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 岩手県紫波町 0332100 小さな噴石の落下 75 1 +39.8788+140.9800/+39.8600+140.9988/+39.8400+140.9988/+39.8209+140.9800/+39.8260+140.9600/+39.8400+140.9469/+39.8531+140.9600/+39.8600+140.9612/+39.8788+140.9800/ 南 2 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-05-13T21:00:00+09:00 2026-05-14T00:00:00+09:00 降灰 70 +39.8799+140.9600/+39.8799+140.9800/+39.8600+141.0000/+39.8593+141.0000/+39.8400+141.0187/+39.8278+141.0200/+39.8200+141.0279/+39.8000+141.0370/+39.7800+141.0388/+39.7600+141.0370/+39.7400+141.0258/+39.7337+141.0200/+39.7210+141.0000/+39.7200+140.9978/+39.7072+140.9800/+39.7009+140.9600/+39.7000+140.9561/+39.6871+140.9400/+39.6815+140.9200/+39.6826+140.9000/+39.6847+140.8800/+39.7000+140.8633/+39.7200+140.8611/+39.7400+140.8694/+39.7488+140.8800/+39.7600+140.8956/+39.7638+140.9000/+39.7800+140.9048/+39.7960+140.9200/+39.8000+140.9209/+39.8200+140.9240/+39.8363+140.9400/+39.8400+140.9400/+39.8600+140.9401/+39.8799+140.9600/ 南 20 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 +39.8788+140.9800/+39.8600+140.9988/+39.8400+140.9989/+39.8210+140.9800/+39.8340+140.9600/+39.8400+140.9545/+39.8455+140.9600/+39.8600+140.9612/+39.8788+140.9800/ 南 2 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-05-14T00:00:00+09:00 2026-05-14T03:00:00+09:00 降灰 70 +39.8798+140.9600/+39.8800+140.9800/+39.8798+141.0000/+39.8600+141.0198/+39.8597+141.0200/+39.8520+141.0400/+39.8400+141.0527/+39.8377+141.0600/+39.8200+141.0775/+39.8035+141.0800/+39.8000+141.0835/+39.7800+141.0964/+39.7728+141.1000/+39.7600+141.1178/+39.7565+141.1200/+39.7400+141.1354/+39.7281+141.1400/+39.7200+141.1460/+39.7000+141.1422/+39.6800+141.1507/+39.6646+141.1400/+39.6600+141.1326/+39.6553+141.1200/+39.6600+141.1092/+39.6621+141.1000/+39.6625+141.0800/+39.6710+141.0600/+39.6800+141.0470/+39.6840+141.0400/+39.7000+141.0231/+39.7034+141.0200/+39.7200+141.0063/+39.7305+141.0000/+39.7400+140.9924/+39.7600+140.9843/+39.7731+140.9800/+39.7800+140.9766/+39.8000+140.9633/+39.8009+140.9600/+39.8200+140.9421/+39.8400+140.9401/+39.8600+140.9402/+39.8798+140.9600/ 南東 20 岩手県盛岡市 0320100 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 岩手県矢巾町 0332200 小さな噴石の落下 75 1 +39.8788+140.9800/+39.8600+140.9989/+39.8400+140.9992/+39.8211+140.9800/+39.8400+140.9608/+39.8600+140.9612/+39.8788+140.9800/ 東 1 岩手県八幡平市 0321400 岩手県雫石町 0330100 2026-05-14T03:00:00+09:00 2026-05-14T06:00:00+09:00 降灰 70 +39.8796+140.9600/+39.8800+140.9800/+39.8798+141.0000/+39.8600+141.0198/+39.8598+141.0200/+39.8541+141.0400/+39.8400+141.0544/+39.8381+141.0600/+39.8200+141.0781/+39.8102+141.0800/+39.8000+141.0903/+39.7800+141.0987/+39.7748+141.1000/+39.7600+141.1131/+39.7480+141.1200/+39.7400+141.1291/+39.7335+141.1400/+39.7251+141.1600/+39.7254+141.1800/+39.7209+141.2000/+39.7248+141.2200/+39.7200+141.2313/+39.7091+141.2400/+39.7000+141.2521/+39.6800+141.2497/+39.6719+141.2400/+39.6600+141.2202/+39.6598+141.2200/+39.6400+141.2000/+39.6305+141.1800/+39.6234+141.1600/+39.6275+141.1400/+39.6327+141.1200/+39.6400+141.1131/+39.6478+141.1000/+39.6600+141.0860/+39.6654+141.0800/+39.6800+141.0652/+39.6878+141.0600/+39.7000+141.0500/+39.7200+141.0421/+39.7294+141.0400/+39.7400+141.0334/+39.7600+141.0240/+39.7704+141.0200/+39.7800+141.0115/+39.8000+141.0005/+39.8001+141.0000/+39.8025+140.9800/+39.8200+140.9625/+39.8203+140.9600/+39.8400+140.9403/+39.8600+140.9404/+39.8796+140.9600/ 南東 30 岩手県盛岡市 0320100 岩手県八幡平市 0321400 岩手県滝沢市 0321600 岩手県雫石町 0330100 岩手県矢巾町 0332200 小さな噴石の落下 75 1 +39.8788+140.9800/+39.8600+140.9988/+39.8400+140.9994/+39.8212+140.9800/+39.8400+140.9612/+39.8600+140.9612/+39.8788+140.9800/ 東 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、１３日２１時から２４時までは火口から南方向に降灰が予想されます。 　１３日１２時から１４日６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 　１３日１２時から１５時まで　東　　　　　　　６ｋｍ　　　１ｋｍ　　　　　 　１３日１５時から１８時まで　南東　　　　　　２０ｋｍ　　２ｋｍ　　　　　 　１３日１８時から２１時まで　南　　　　　　　３０ｋｍ　　２ｋｍ　　　　　 　１３日２１時から２４時まで　南　　　　　　　２０ｋｍ　　２ｋｍ　　　　　 　１４日００時から０３時まで　南東　　　　　　２０ｋｍ　　１ｋｍ　　　　　 　１４日０３時から０６時まで　南東　　　　　　３０ｋｍ　　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、滝沢市、盛岡市、紫波町、矢巾町 　 　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。