2026-09-20T08:00:00Z 通常 気象庁本庁 気象庁 2026-09-20T17:00:00+09:00 2026-09-20T18:00:00+09:00 2026-09-21T12:00:00+09:00 108 発表 1 降灰予報 1.1_0 　現在、十勝岳は噴火警戒レベル３（入山規制）です。十勝岳で噴火が発生した場合には、２０日２１時から２４時までは火口から東方向、２１日０９時から１２時までは火口から北東方向に降灰が予想されます。 降灰予報（定時） 06 十勝岳 108 降灰 70 北海道北見市 0120800 北海道富良野市 0122900 北海道上川町 0145700 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道南富良野町 0146200 北海道上士幌町 0163300 北海道新得町 0163500 小さな噴石の落下 75 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 降灰予報（定時） 06 十勝岳 108 +4325.07+14241.18+2077/ 降灰 70 北海道北見市 0120800 北海道富良野市 0122900 北海道上川町 0145700 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道南富良野町 0146200 北海道上士幌町 0163300 北海道新得町 0163500 小さな噴石の落下 75 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 2026-09-20T18:00:00+09:00 2026-09-20T21:00:00+09:00 降灰 70 +43.6456+143.0800/+43.6493+143.1000/+43.6535+143.1200/+43.6400+143.1371/+43.6200+143.1234/+43.6161+143.1200/+43.6000+143.1078/+43.5951+143.1000/+43.5834+143.0800/+43.5800+143.0757/+43.5735+143.0600/+43.5600+143.0450/+43.5550+143.0400/+43.5402+143.0200/+43.5400+143.0196/+43.5318+143.0000/+43.5209+142.9800/+43.5200+142.9787/+43.5066+142.9600/+43.5000+142.9403/+43.4998+142.9400/+43.4900+142.9200/+43.4800+142.9002/+43.4797+142.9000/+43.4642+142.8800/+43.4600+142.8645/+43.4581+142.8600/+43.4421+142.8400/+43.4400+142.8322/+43.4326+142.8200/+43.4272+142.8000/+43.4218+142.7800/+43.4200+142.7636/+43.4175+142.7600/+43.4050+142.7400/+43.4006+142.7200/+43.4000+142.7000/+43.4000+142.6800/+43.4007+142.6600/+43.4200+142.6407/+43.4400+142.6425/+43.4575+142.6600/+43.4600+142.6800/+43.4600+142.6815/+43.4785+142.7000/+43.4800+142.7167/+43.4832+142.7200/+43.4985+142.7400/+43.5000+142.7468/+43.5114+142.7600/+43.5181+142.7800/+43.5200+142.7960/+43.5223+142.8000/+43.5353+142.8200/+43.5400+142.8379/+43.5415+142.8400/+43.5540+142.8600/+43.5586+142.8800/+43.5600+142.8852/+43.5691+142.9000/+43.5721+142.9200/+43.5800+142.9374/+43.5821+142.9400/+43.5967+142.9600/+43.6000+142.9709/+43.6032+142.9800/+43.6076+143.0000/+43.6113+143.0200/+43.6164+143.0400/+43.6200+143.0477/+43.6283+143.0600/+43.6400+143.0739/+43.6456+143.0800/ 北東 40 北海道上川町 0145700 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道上士幌町 0163300 北海道新得町 0163500 小さな噴石の落下 75 1 +43.4498+142.6800/+43.4400+142.6986/+43.4322+142.7000/+43.4200+142.7021/+43.4180+142.7000/+43.4012+142.6800/+43.4200+142.6612/+43.4400+142.6702/+43.4498+142.6800/ 北東 2 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 2026-09-20T21:00:00+09:00 2026-09-21T00:00:00+09:00 降灰 70 +43.6013+143.0400/+43.6091+143.0600/+43.6176+143.0800/+43.6190+143.1000/+43.6178+143.1200/+43.6018+143.1400/+43.6000+143.1412/+43.5981+143.1400/+43.5800+143.1286/+43.5738+143.1200/+43.5600+143.1073/+43.5527+143.1000/+43.5421+143.0800/+43.5400+143.0727/+43.5362+143.0600/+43.5200+143.0473/+43.5143+143.0400/+43.5041+143.0200/+43.5000+143.0157/+43.4886+143.0000/+43.4800+142.9941/+43.4600+142.9842/+43.4555+142.9800/+43.4402+142.9600/+43.4400+142.9596/+43.4268+142.9400/+43.4200+142.9274/+43.4135+142.9200/+43.4012+142.9000/+43.4000+142.8961/+43.3920+142.8800/+43.3867+142.8600/+43.3856+142.8400/+43.3859+142.8200/+43.3899+142.8000/+43.3911+142.7800/+43.3888+142.7600/+43.4000+142.7411/+43.4000+142.7400/+43.4001+142.7200/+43.4000+142.7000/+43.4000+142.6800/+43.4022+142.6600/+43.4200+142.6422/+43.4400+142.6493/+43.4507+142.6600/+43.4599+142.6800/+43.4600+142.7000/+43.4599+142.7200/+43.4600+142.7267/+43.4716+142.7400/+43.4762+142.7600/+43.4780+142.7800/+43.4786+142.8000/+43.4795+142.8200/+43.4800+142.8250/+43.4930+142.8400/+43.4978+142.8600/+43.5000+142.8640/+43.5122+142.8800/+43.5191+142.9000/+43.5200+142.9019/+43.5400+142.9148/+43.5440+142.9200/+43.5497+142.9400/+43.5600+142.9521/+43.5661+142.9600/+43.5800+142.9759/+43.5844+142.9800/+43.5924+143.0000/+43.5958+143.0200/+43.6000+143.0366/+43.6013+143.0400/ 東 40 北海道北見市 0120800 北海道上川町 0145700 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道上士幌町 0163300 北海道新得町 0163500 小さな噴石の落下 75 1 +43.4470+142.6800/+43.4403+142.7000/+43.4400+142.7004/+43.4200+142.7036/+43.4170+142.7000/+43.4012+142.6800/+43.4200+142.6612/+43.4400+142.6730/+43.4470+142.6800/ 北東 3 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 2026-09-21T00:00:00+09:00 2026-09-21T03:00:00+09:00 降灰 70 +43.5854+143.0000/+43.5867+143.0200/+43.5878+143.0400/+43.5890+143.0600/+43.5822+143.0800/+43.5800+143.0835/+43.5600+143.0891/+43.5533+143.0800/+43.5444+143.0600/+43.5400+143.0577/+43.5200+143.0456/+43.5155+143.0400/+43.5082+143.0200/+43.5000+143.0106/+43.4863+143.0000/+43.4800+142.9971/+43.4600+142.9909/+43.4452+142.9800/+43.4400+142.9772/+43.4225+142.9600/+43.4200+142.9559/+43.4000+142.9458/+43.3950+142.9400/+43.3878+142.9200/+43.3800+142.9019/+43.3787+142.9000/+43.3800+142.8942/+43.3808+142.8800/+43.3810+142.8600/+43.3814+142.8400/+43.3829+142.8200/+43.3853+142.8000/+43.3862+142.7800/+43.3863+142.7600/+43.3917+142.7400/+43.4000+142.7286/+43.4000+142.7200/+43.4000+142.7000/+43.4000+142.6800/+43.4014+142.6600/+43.4200+142.6414/+43.4400+142.6460/+43.4540+142.6600/+43.4599+142.6800/+43.4599+142.7000/+43.4599+142.7200/+43.4600+142.7400/+43.4600+142.7430/+43.4711+142.7600/+43.4762+142.7800/+43.4761+142.8000/+43.4775+142.8200/+43.4796+142.8400/+43.4800+142.8432/+43.4913+142.8600/+43.5000+142.8747/+43.5037+142.8800/+43.5187+142.9000/+43.5200+142.9032/+43.5400+142.9094/+43.5473+142.9200/+43.5497+142.9400/+43.5597+142.9600/+43.5600+142.9606/+43.5776+142.9800/+43.5800+142.9872/+43.5854+143.0000/ 東 40 北海道上川町 0145700 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道上士幌町 0163300 北海道新得町 0163500 小さな噴石の落下 75 1 +43.4399+142.6800/+43.4200+142.7000/+43.4012+142.6800/+43.4200+142.6612/+43.4399+142.6800/ 南東 1 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 2026-09-21T03:00:00+09:00 2026-09-21T06:00:00+09:00 降灰 70 +43.5769+142.9800/+43.5794+143.0000/+43.5680+143.0200/+43.5600+143.0255/+43.5400+143.0243/+43.5234+143.0200/+43.5200+143.0194/+43.5000+143.0038/+43.4973+143.0000/+43.4841+142.9800/+43.4800+142.9775/+43.4600+142.9726/+43.4439+142.9600/+43.4400+142.9589/+43.4200+142.9495/+43.4055+142.9400/+43.4000+142.9366/+43.3829+142.9200/+43.3800+142.9173/+43.3652+142.9000/+43.3621+142.8800/+43.3607+142.8600/+43.3621+142.8400/+43.3617+142.8200/+43.3652+142.8000/+43.3699+142.7800/+43.3750+142.7600/+43.3800+142.7528/+43.3804+142.7400/+43.3806+142.7200/+43.3807+142.7000/+43.3836+142.6800/+43.4000+142.6636/+43.4011+142.6600/+43.4200+142.6411/+43.4400+142.6457/+43.4543+142.6600/+43.4599+142.6800/+43.4599+142.7000/+43.4597+142.7200/+43.4595+142.7400/+43.4594+142.7600/+43.4595+142.7800/+43.4599+142.8000/+43.4600+142.8124/+43.4607+142.8200/+43.4735+142.8400/+43.4778+142.8600/+43.4800+142.8685/+43.4905+142.8800/+43.5000+142.8850/+43.5161+142.9000/+43.5200+142.9051/+43.5365+142.9200/+43.5400+142.9257/+43.5495+142.9400/+43.5579+142.9600/+43.5600+142.9627/+43.5769+142.9800/ 東 30 北海道富良野市 0122900 北海道上川町 0145700 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道南富良野町 0146200 北海道上士幌町 0163300 北海道新得町 0163500 小さな噴石の落下 75 1 +43.4408+142.6800/+43.4400+142.6820/+43.4285+142.7000/+43.4200+142.7050/+43.4155+142.7000/+43.4012+142.6800/+43.4200+142.6612/+43.4400+142.6792/+43.4408+142.6800/ 北東 2 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 2026-09-21T06:00:00+09:00 2026-09-21T09:00:00+09:00 降灰 70 +43.5233+142.8400/+43.5257+142.8600/+43.5263+142.8800/+43.5200+142.8901/+43.5053+142.9000/+43.5000+142.9143/+43.4961+142.9000/+43.4863+142.8800/+43.4800+142.8776/+43.4641+142.8600/+43.4600+142.8411/+43.4596+142.8400/+43.4400+142.8305/+43.4301+142.8200/+43.4202+142.8000/+43.4200+142.7996/+43.4104+142.7800/+43.4022+142.7600/+43.4000+142.7513/+43.3918+142.7400/+43.3847+142.7200/+43.3819+142.7000/+43.3844+142.6800/+43.4000+142.6643/+43.4001+142.6600/+43.4200+142.6401/+43.4400+142.6402/+43.4600+142.6492/+43.4700+142.6600/+43.4800+142.6677/+43.4933+142.6800/+43.4991+142.7000/+43.4992+142.7200/+43.5000+142.7224/+43.5184+142.7400/+43.5161+142.7600/+43.5111+142.7800/+43.5160+142.8000/+43.5158+142.8200/+43.5200+142.8331/+43.5233+142.8400/ 北東 20 北海道富良野市 0122900 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道南富良野町 0146200 北海道新得町 0163500 小さな噴石の落下 75 1 +43.4393+142.6800/+43.4200+142.6997/+43.4012+142.6800/+43.4200+142.6611/+43.4393+142.6800/ 南東 1 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 2026-09-21T09:00:00+09:00 2026-09-21T12:00:00+09:00 降灰 70 +43.5401+142.7200/+43.5453+142.7400/+43.5400+142.7559/+43.5381+142.7600/+43.5355+142.7800/+43.5374+142.8000/+43.5270+142.8200/+43.5200+142.8327/+43.5174+142.8400/+43.5000+142.8592/+43.4835+142.8400/+43.4800+142.8350/+43.4698+142.8200/+43.4600+142.8023/+43.4585+142.8000/+43.4555+142.7800/+43.4460+142.7600/+43.4400+142.7506/+43.4326+142.7400/+43.4221+142.7200/+43.4200+142.7190/+43.4013+142.7000/+43.4000+142.6800/+43.4001+142.6600/+43.4200+142.6400/+43.4400+142.6400/+43.4415+142.6400/+43.4600+142.6301/+43.4778+142.6400/+43.4800+142.6402/+43.5000+142.6450/+43.5181+142.6600/+43.5200+142.6668/+43.5276+142.6800/+43.5365+142.7000/+43.5400+142.7197/+43.5401+142.7200/ +43.5404+142.8800/+43.5400+142.8811/+43.5200+142.8826/+43.5164+142.8800/+43.5200+142.8636/+43.5400+142.8789/+43.5404+142.8800/ 北東 20 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 小さな噴石の落下 75 1 +43.4397+142.6800/+43.4200+142.6991/+43.4012+142.6800/+43.4200+142.6609/+43.4397+142.6800/ 南東 1 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 　現在、十勝岳は噴火警戒レベル３（入山規制）です。十勝岳で噴火が発生した場合には、２０日２１時から２４時までは火口から東方向、２１日０９時から１２時までは火口から北東方向に降灰が予想されます。 　２０日１８時から２１日１２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 　２０日１８時から２１時まで　北東　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　２０日２１時から２４時まで　東　　　　　　　４０ｋｍ　　３ｋｍ　　　　　 　２１日００時から０３時まで　東　　　　　　　４０ｋｍ　　１ｋｍ　　　　　 　２１日０３時から０６時まで　東　　　　　　　３０ｋｍ　　２ｋｍ　　　　　 　２１日０６時から０９時まで　北東　　　　　　２０ｋｍ　　１ｋｍ　　　　　 　２１日０９時から１２時まで　北東　　　　　　２０ｋｍ　　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。 　北海道　：美瑛町、上富良野町、新得町、上川町、上士幌町、北見市、富良野市、南富良野町 　 　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。