2026-09-20T02:00:00Z 通常 気象庁本庁 気象庁 2026-09-20T11:00:00+09:00 2026-09-20T12:00:00+09:00 2026-09-21T06:00:00+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 北海道上川町 0145700 北海道東川町 0145800 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 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 北海道上川町 0145700 北海道東川町 0145800 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 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 2026-09-20T12:00:00+09:00 2026-09-20T15:00:00+09:00 降灰 70 +43.6941+142.7800/+43.6988+142.8000/+43.6948+142.8200/+43.6946+142.8400/+43.6926+142.8600/+43.6881+142.8800/+43.6800+142.8950/+43.6600+142.8923/+43.6495+142.8800/+43.6400+142.8748/+43.6278+142.8600/+43.6280+142.8400/+43.6200+142.8237/+43.6175+142.8200/+43.6000+142.8070/+43.5889+142.8000/+43.5800+142.7956/+43.5652+142.7800/+43.5600+142.7724/+43.5449+142.7600/+43.5400+142.7587/+43.5200+142.7507/+43.5057+142.7400/+43.5000+142.7389/+43.4800+142.7365/+43.4609+142.7200/+43.4600+142.7200/+43.4400+142.7196/+43.4200+142.7160/+43.4040+142.7000/+43.4000+142.6800/+43.4001+142.6600/+43.4200+142.6401/+43.4400+142.6401/+43.4600+142.6403/+43.4800+142.6403/+43.5000+142.6407/+43.5200+142.6406/+43.5400+142.6444/+43.5600+142.6562/+43.5652+142.6600/+43.5800+142.6690/+43.5923+142.6800/+43.6000+142.6883/+43.6200+142.6957/+43.6233+142.7000/+43.6354+142.7200/+43.6400+142.7240/+43.6561+142.7400/+43.6600+142.7456/+43.6784+142.7600/+43.6800+142.7631/+43.6941+142.7800/ 北 30 北海道上川町 0145700 北海道東川町 0145800 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 +43.4527+142.6800/+43.4400+142.6930/+43.4200+142.6988/+43.4012+142.6800/+43.4200+142.6612/+43.4400+142.6673/+43.4527+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 2026-09-20T15:00:00+09:00 2026-09-20T18:00:00+09:00 降灰 70 +43.6050+142.8400/+43.6148+142.8600/+43.6067+142.8800/+43.6000+142.8871/+43.5904+142.9000/+43.5800+142.9131/+43.5600+142.9121/+43.5400+142.9043/+43.5363+142.9000/+43.5262+142.8800/+43.5200+142.8742/+43.5095+142.8600/+43.5033+142.8400/+43.5000+142.8368/+43.4852+142.8200/+43.4800+142.8132/+43.4688+142.8000/+43.4600+142.7827/+43.4577+142.7800/+43.4407+142.7600/+43.4400+142.7592/+43.4226+142.7400/+43.4200+142.7339/+43.4068+142.7200/+43.4001+142.7000/+43.4000+142.6800/+43.4002+142.6600/+43.4200+142.6402/+43.4400+142.6403/+43.4600+142.6565/+43.4642+142.6600/+43.4800+142.6648/+43.4991+142.6800/+43.5000+142.6811/+43.5165+142.7000/+43.5200+142.7050/+43.5374+142.7200/+43.5400+142.7243/+43.5512+142.7400/+43.5600+142.7529/+43.5687+142.7600/+43.5796+142.7800/+43.5800+142.7824/+43.5866+142.8000/+43.5958+142.8200/+43.6000+142.8307/+43.6050+142.8400/ 北東 30 北海道上川町 0145700 北海道美瑛町 0145900 北海道上富良野町 0146000 北海道新得町 0163500 小さな噴石の落下 75 1 +43.4436+142.6800/+43.4400+142.6843/+43.4200+142.6992/+43.4012+142.6800/+43.4200+142.6612/+43.4400+142.6765/+43.4436+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 2026-09-20T18:00:00+09:00 2026-09-20T21:00:00+09:00 降灰 70 +43.5870+142.9400/+43.5910+142.9600/+43.5966+142.9800/+43.5965+143.0000/+43.5938+143.0200/+43.5800+143.0340/+43.5600+143.0280/+43.5523+143.0200/+43.5400+143.0080/+43.5329+143.0000/+43.5200+142.9833/+43.5180+142.9800/+43.5056+142.9600/+43.5018+142.9400/+43.5000+142.9381/+43.4867+142.9200/+43.4812+142.9000/+43.4800+142.8957/+43.4701+142.8800/+43.4600+142.8633/+43.4580+142.8600/+43.4454+142.8400/+43.4400+142.8284/+43.4325+142.8200/+43.4253+142.8000/+43.4200+142.7800/+43.4200+142.7799/+43.4108+142.7600/+43.4047+142.7400/+43.4007+142.7200/+43.4000+142.7000/+43.4000+142.6800/+43.4006+142.6600/+43.4200+142.6406/+43.4400+142.6419/+43.4581+142.6600/+43.4600+142.6800/+43.4600+142.6803/+43.4794+142.7000/+43.4800+142.7039/+43.4951+142.7200/+43.5000+142.7394/+43.5005+142.7400/+43.5153+142.7600/+43.5200+142.7773/+43.5219+142.7800/+43.5351+142.8000/+43.5400+142.8127/+43.5455+142.8200/+43.5548+142.8400/+43.5600+142.8554/+43.5632+142.8600/+43.5741+142.8800/+43.5798+142.9000/+43.5786+142.9200/+43.5800+142.9242/+43.5870+142.9400/ 北東 30 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 +43.4513+142.6800/+43.4400+142.6974/+43.4200+142.6994/+43.4012+142.6800/+43.4200+142.6612/+43.4400+142.6688/+43.4513+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 +43.6272+143.0400/+43.6334+143.0600/+43.6262+143.0800/+43.6200+143.0809/+43.6185+143.0800/+43.6000+143.0676/+43.5938+143.0600/+43.5800+143.0481/+43.5733+143.0400/+43.5600+143.0298/+43.5497+143.0200/+43.5402+143.0000/+43.5400+142.9999/+43.5200+142.9853/+43.5163+142.9800/+43.5042+142.9600/+43.5000+142.9507/+43.4905+142.9400/+43.4800+142.9226/+43.4781+142.9200/+43.4606+142.9000/+43.4600+142.8985/+43.4491+142.8800/+43.4409+142.8600/+43.4400+142.8574/+43.4305+142.8400/+43.4233+142.8200/+43.4221+142.8000/+43.4200+142.7826/+43.4185+142.7800/+43.4073+142.7600/+43.4022+142.7400/+43.4004+142.7200/+43.4000+142.7000/+43.4000+142.6800/+43.4013+142.6600/+43.4200+142.6413/+43.4400+142.6447/+43.4553+142.6600/+43.4600+142.6800/+43.4600+142.6819/+43.4780+142.7000/+43.4798+142.7200/+43.4800+142.7217/+43.4976+142.7400/+43.5000+142.7523/+43.5076+142.7600/+43.5189+142.7800/+43.5200+142.7825/+43.5358+142.8000/+43.5400+142.8094/+43.5502+142.8200/+43.5599+142.8400/+43.5600+142.8401/+43.5757+142.8600/+43.5800+142.8693/+43.5885+142.8800/+43.5995+142.9000/+43.5978+142.9200/+43.5951+142.9400/+43.6000+142.9503/+43.6082+142.9600/+43.6114+142.9800/+43.6122+143.0000/+43.6189+143.0200/+43.6200+143.0229/+43.6272+143.0400/ 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 +43.4514+142.6800/+43.4421+142.7000/+43.4400+142.7023/+43.4200+142.7004/+43.4196+142.7000/+43.4012+142.6800/+43.4200+142.6612/+43.4400+142.6686/+43.4514+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 +43.6602+143.0400/+43.6649+143.0600/+43.6789+143.0800/+43.6600+143.0877/+43.6400+143.0885/+43.6311+143.0800/+43.6200+143.0744/+43.6057+143.0600/+43.6000+143.0485/+43.5942+143.0400/+43.5800+143.0245/+43.5766+143.0200/+43.5607+143.0000/+43.5600+142.9995/+43.5459+142.9800/+43.5400+142.9738/+43.5285+142.9600/+43.5202+142.9400/+43.5200+142.9399/+43.5041+142.9200/+43.5000+142.9149/+43.4862+142.9000/+43.4805+142.8800/+43.4800+142.8772/+43.4710+142.8600/+43.4600+142.8420/+43.4582+142.8400/+43.4445+142.8200/+43.4407+142.8000/+43.4400+142.7965/+43.4272+142.7800/+43.4212+142.7600/+43.4201+142.7400/+43.4200+142.7394/+43.4011+142.7200/+43.4000+142.7000/+43.4000+142.6800/+43.4015+142.6600/+43.4200+142.6415/+43.4400+142.6450/+43.4550+142.6600/+43.4600+142.6800/+43.4600+142.6817/+43.4782+142.7000/+43.4798+142.7200/+43.4800+142.7227/+43.4970+142.7400/+43.4997+142.7600/+43.5000+142.7614/+43.5169+142.7800/+43.5200+142.7903/+43.5292+142.8000/+43.5382+142.8200/+43.5400+142.8264/+43.5523+142.8400/+43.5600+142.8527/+43.5669+142.8600/+43.5773+142.8800/+43.5800+142.8905/+43.5883+142.9000/+43.5978+142.9200/+43.5989+142.9400/+43.6000+142.9427/+43.6139+142.9600/+43.6187+142.9800/+43.6200+142.9851/+43.6269+143.0000/+43.6400+143.0159/+43.6442+143.0200/+43.6600+143.0398/+43.6602+143.0400/ 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 北海道新得町 0163500 小さな噴石の落下 75 1 +43.4505+142.6800/+43.4409+142.7000/+43.4400+142.7011/+43.4200+142.7037/+43.4163+142.7000/+43.4012+142.6800/+43.4200+142.6612/+43.4400+142.6695/+43.4505+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 2026-09-21T03:00:00+09:00 2026-09-21T06:00:00+09:00 降灰 70 +43.5743+143.0000/+43.5766+143.0200/+43.5777+143.0400/+43.5772+143.0600/+43.5748+143.0800/+43.5609+143.1000/+43.5600+143.1005/+43.5588+143.1000/+43.5400+143.0892/+43.5260+143.0800/+43.5200+143.0754/+43.5088+143.0600/+43.5000+143.0544/+43.4866+143.0400/+43.4800+143.0220/+43.4793+143.0200/+43.4624+143.0000/+43.4629+142.9800/+43.4600+142.9702/+43.4544+142.9600/+43.4462+142.9400/+43.4413+142.9200/+43.4400+142.9150/+43.4324+142.9000/+43.4213+142.8800/+43.4200+142.8762/+43.4099+142.8600/+43.4046+142.8400/+43.4020+142.8200/+43.4009+142.8000/+43.4004+142.7800/+43.4001+142.7600/+43.4002+142.7400/+43.4001+142.7200/+43.4000+142.7000/+43.4000+142.6800/+43.4013+142.6600/+43.4200+142.6413/+43.4400+142.6457/+43.4543+142.6600/+43.4599+142.6800/+43.4600+142.7000/+43.4600+142.7185/+43.4614+142.7200/+43.4753+142.7400/+43.4777+142.7600/+43.4787+142.7800/+43.4800+142.7970/+43.4823+142.8000/+43.4909+142.8200/+43.4981+142.8400/+43.4995+142.8600/+43.5000+142.8628/+43.5110+142.8800/+43.5168+142.9000/+43.5200+142.9092/+43.5292+142.9200/+43.5365+142.9400/+43.5400+142.9474/+43.5501+142.9600/+43.5576+142.9800/+43.5600+142.9858/+43.5743+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 +43.4435+142.6800/+43.4452+142.7000/+43.4400+142.7061/+43.4200+142.7030/+43.4174+142.7000/+43.4012+142.6800/+43.4200+142.6612/+43.4400+142.6765/+43.4435+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 　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時までは火口から北東方向に降灰が予想されます。 　２０日１２時から２１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 　２０日１２時から１５時まで　北　　　　　　　３０ｋｍ　　２ｋｍ　　　　　 　２０日１５時から１８時まで　北東　　　　　　３０ｋｍ　　２ｋｍ　　　　　 　２０日１８時から２１時まで　北東　　　　　　３０ｋｍ　　２ｋｍ　　　　　 　２０日２１時から２４時まで　北東　　　　　　４０ｋｍ　　３ｋｍ　　　　　 　２１日００時から０３時まで　北東　　　　　　４０ｋｍ　　３ｋｍ　　　　　 　２１日０３時から０６時まで　東　　　　　　　４０ｋｍ　　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。 　北海道　：美瑛町、上富良野町、新得町、上川町、東川町、上士幌町 　 　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。