2026-08-17T20:00:00Z 通常 気象庁本庁 気象庁 2026-08-18T05:00:00+09:00 2026-08-18T06:00:00+09:00 2026-08-19T00:00:00+09:00 105 発表 1 降灰予報 1.1_0 　現在、雌阿寒岳は噴火警戒レベル２（火口周辺規制）です。雌阿寒岳で噴火が発生した場合には、１８日０９時から１２時までは火口から北東方向、１８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 雌阿寒岳 105 降灰 70 北海道釧路市 0120600 北海道網走市 0121100 北海道美幌町 0154300 北海道津別町 0154400 北海道大空町 0156400 北海道足寄町 0164700 北海道弟子屈町 0166500 北海道白糠町 0166800 小さな噴石の落下 75 北海道釧路市 0120600 北海道足寄町 0164700 北海道白糠町 0166800 降灰予報（定時） 06 雌阿寒岳 105 +4323.18+14400.52+1499/ 降灰 70 北海道釧路市 0120600 北海道網走市 0121100 北海道美幌町 0154300 北海道津別町 0154400 北海道大空町 0156400 北海道足寄町 0164700 北海道弟子屈町 0166500 北海道白糠町 0166800 小さな噴石の落下 75 北海道釧路市 0120600 北海道足寄町 0164700 北海道白糠町 0166800 2026-08-18T06:00:00+09:00 2026-08-18T09:00:00+09:00 降灰 70 +43.7401+144.2600/+43.7420+144.2800/+43.7400+144.2869/+43.7349+144.3000/+43.7200+144.3191/+43.7000+144.3140/+43.6800+144.3120/+43.6645+144.3000/+43.6600+144.2970/+43.6400+144.2832/+43.6356+144.2800/+43.6200+144.2706/+43.6070+144.2600/+43.6000+144.2569/+43.5805+144.2400/+43.5800+144.2397/+43.5606+144.2200/+43.5600+144.2195/+43.5400+144.2055/+43.5353+144.2000/+43.5200+144.1820/+43.5180+144.1800/+43.5000+144.1607/+43.4993+144.1600/+43.4818+144.1400/+43.4800+144.1385/+43.4620+144.1200/+43.4600+144.1182/+43.4421+144.1000/+43.4400+144.0988/+43.4214+144.0800/+43.4200+144.0795/+43.4005+144.0600/+43.4000+144.0599/+43.3800+144.0460/+43.3740+144.0400/+43.3601+144.0200/+43.3604+144.0000/+43.3800+143.9804/+43.4000+143.9802/+43.4199+144.0000/+43.4200+144.0000/+43.4400+144.0009/+43.4592+144.0200/+43.4600+144.0204/+43.4800+144.0278/+43.4926+144.0400/+43.5000+144.0429/+43.5181+144.0600/+43.5200+144.0614/+43.5400+144.0762/+43.5442+144.0800/+43.5600+144.0896/+43.5719+144.1000/+43.5800+144.1096/+43.5932+144.1200/+43.6000+144.1249/+43.6159+144.1400/+43.6200+144.1441/+43.6400+144.1500/+43.6528+144.1600/+43.6600+144.1672/+43.6728+144.1800/+43.6800+144.1880/+43.6962+144.2000/+43.7000+144.2031/+43.7190+144.2200/+43.7200+144.2213/+43.7384+144.2400/+43.7400+144.2590/+43.7401+144.2600/ 北東 40 北海道釧路市 0120600 北海道美幌町 0154300 北海道津別町 0154400 北海道大空町 0156400 北海道足寄町 0164700 北海道弟子屈町 0166500 北海道白糠町 0166800 小さな噴石の落下 75 1 +43.4193+144.0200/+43.4000+144.0395/+43.3800+144.0388/+43.3612+144.0200/+43.3800+144.0012/+43.4000+144.0012/+43.4193+144.0200/ 北東 2 北海道釧路市 0120600 北海道足寄町 0164700 北海道白糠町 0166800 2026-08-18T09:00:00+09:00 2026-08-18T12:00:00+09:00 降灰 70 +43.7930+144.2400/+43.7962+144.2600/+43.7911+144.2800/+43.7800+144.2888/+43.7600+144.2914/+43.7400+144.2865/+43.7200+144.2815/+43.7173+144.2800/+43.7000+144.2760/+43.6800+144.2734/+43.6600+144.2605/+43.6595+144.2600/+43.6400+144.2534/+43.6200+144.2431/+43.6149+144.2400/+43.6000+144.2212/+43.5993+144.2200/+43.5800+144.2030/+43.5766+144.2000/+43.5600+144.1933/+43.5455+144.1800/+43.5400+144.1772/+43.5220+144.1600/+43.5200+144.1586/+43.5012+144.1400/+43.5000+144.1394/+43.4803+144.1200/+43.4800+144.1198/+43.4600+144.1021/+43.4579+144.1000/+43.4400+144.0933/+43.4267+144.0800/+43.4200+144.0781/+43.4019+144.0600/+43.4000+144.0598/+43.3800+144.0400/+43.3602+144.0200/+43.3605+144.0000/+43.3800+143.9805/+43.4000+143.9802/+43.4200+143.9908/+43.4292+144.0000/+43.4400+144.0005/+43.4598+144.0200/+43.4600+144.0201/+43.4800+144.0226/+43.4989+144.0400/+43.5000+144.0405/+43.5200+144.0487/+43.5337+144.0600/+43.5400+144.0630/+43.5594+144.0800/+43.5600+144.0805/+43.5800+144.0936/+43.5879+144.1000/+43.6000+144.1064/+43.6198+144.1200/+43.6200+144.1201/+43.6400+144.1297/+43.6546+144.1400/+43.6600+144.1431/+43.6800+144.1536/+43.6918+144.1600/+43.7000+144.1651/+43.7195+144.1800/+43.7200+144.1804/+43.7400+144.1896/+43.7505+144.2000/+43.7600+144.2121/+43.7709+144.2200/+43.7800+144.2275/+43.7930+144.2400/ 北東 50 北海道釧路市 0120600 北海道美幌町 0154300 北海道津別町 0154400 北海道大空町 0156400 北海道足寄町 0164700 北海道弟子屈町 0166500 北海道白糠町 0166800 小さな噴石の落下 75 1 +43.4194+144.0200/+43.4000+144.0397/+43.3800+144.0388/+43.3612+144.0200/+43.3612+144.0000/+43.3800+143.9812/+43.3988+144.0000/+43.4000+144.0012/+43.4194+144.0200/ 東 2 北海道釧路市 0120600 北海道足寄町 0164700 北海道白糠町 0166800 2026-08-18T12:00:00+09:00 2026-08-18T15:00:00+09:00 降灰 70 +43.7436+144.2800/+43.7444+144.3000/+43.7459+144.3200/+43.7400+144.3269/+43.7200+144.3387/+43.7000+144.3308/+43.6800+144.3245/+43.6767+144.3200/+43.6600+144.3030/+43.6567+144.3000/+43.6400+144.2902/+43.6228+144.2800/+43.6200+144.2786/+43.6000+144.2619/+43.5988+144.2600/+43.5800+144.2406/+43.5793+144.2400/+43.5600+144.2254/+43.5551+144.2200/+43.5400+144.2003/+43.5397+144.2000/+43.5208+144.1800/+43.5200+144.1794/+43.5011+144.1600/+43.5000+144.1591/+43.4811+144.1400/+43.4800+144.1389/+43.4618+144.1200/+43.4600+144.1185/+43.4414+144.1000/+43.4400+144.0992/+43.4208+144.0800/+43.4200+144.0797/+43.4004+144.0600/+43.4000+144.0599/+43.3800+144.0457/+43.3743+144.0400/+43.3601+144.0200/+43.3604+144.0000/+43.3800+143.9804/+43.4000+143.9803/+43.4198+144.0000/+43.4200+144.0001/+43.4400+144.0026/+43.4574+144.0200/+43.4600+144.0210/+43.4797+144.0400/+43.4800+144.0402/+43.5000+144.0481/+43.5127+144.0600/+43.5200+144.0650/+43.5370+144.0800/+43.5400+144.0829/+43.5573+144.1000/+43.5600+144.1029/+43.5792+144.1200/+43.5800+144.1208/+43.5996+144.1400/+43.6000+144.1404/+43.6200+144.1588/+43.6323+144.1600/+43.6400+144.1605/+43.6600+144.1754/+43.6652+144.1800/+43.6800+144.1976/+43.6830+144.2000/+43.7000+144.2106/+43.7114+144.2200/+43.7200+144.2329/+43.7269+144.2400/+43.7363+144.2600/+43.7400+144.2696/+43.7436+144.2800/ 北東 50 北海道釧路市 0120600 北海道美幌町 0154300 北海道津別町 0154400 北海道大空町 0156400 北海道足寄町 0164700 北海道弟子屈町 0166500 北海道白糠町 0166800 小さな噴石の落下 75 1 +43.4192+144.0200/+43.4000+144.0396/+43.3800+144.0388/+43.3612+144.0200/+43.3612+144.0000/+43.3800+143.9812/+43.3988+144.0000/+43.4000+144.0014/+43.4192+144.0200/ 東 2 北海道釧路市 0120600 北海道足寄町 0164700 北海道白糠町 0166800 2026-08-18T15:00:00+09:00 2026-08-18T18:00:00+09:00 降灰 70 +43.8074+144.2400/+43.8000+144.2502/+43.7800+144.2490/+43.7600+144.2476/+43.7400+144.2553/+43.7200+144.2596/+43.7000+144.2584/+43.6800+144.2522/+43.6600+144.2464/+43.6406+144.2400/+43.6400+144.2399/+43.6200+144.2364/+43.6013+144.2200/+43.6000+144.2193/+43.5800+144.2073/+43.5714+144.2000/+43.5600+144.1919/+43.5476+144.1800/+43.5400+144.1772/+43.5220+144.1600/+43.5200+144.1586/+43.5000+144.1425/+43.4971+144.1400/+43.4800+144.1269/+43.4728+144.1200/+43.4600+144.1135/+43.4462+144.1000/+43.4400+144.0971/+43.4229+144.0800/+43.4200+144.0793/+43.4008+144.0600/+43.4000+144.0599/+43.3801+144.0400/+43.3800+144.0399/+43.3601+144.0200/+43.3604+144.0000/+43.3800+143.9804/+43.4000+143.9802/+43.4199+144.0000/+43.4200+144.0000/+43.4400+144.0009/+43.4592+144.0200/+43.4600+144.0203/+43.4800+144.0266/+43.4936+144.0400/+43.5000+144.0417/+43.5199+144.0600/+43.5200+144.0601/+43.5400+144.0671/+43.5549+144.0800/+43.5600+144.0823/+43.5800+144.0933/+43.5884+144.1000/+43.6000+144.1049/+43.6200+144.1147/+43.6293+144.1200/+43.6400+144.1233/+43.6600+144.1294/+43.6728+144.1400/+43.6800+144.1426/+43.7000+144.1474/+43.7200+144.1549/+43.7320+144.1600/+43.7400+144.1662/+43.7576+144.1800/+43.7600+144.1823/+43.7800+144.1958/+43.7850+144.2000/+43.7923+144.2200/+43.8000+144.2268/+43.8074+144.2400/ 北東 50 北海道釧路市 0120600 北海道美幌町 0154300 北海道津別町 0154400 北海道大空町 0156400 北海道足寄町 0164700 北海道弟子屈町 0166500 北海道白糠町 0166800 小さな噴石の落下 75 1 +43.4194+144.0200/+43.4000+144.0395/+43.3800+144.0388/+43.3612+144.0200/+43.3612+144.0000/+43.3800+143.9812/+43.3988+144.0000/+43.4000+144.0014/+43.4194+144.0200/ 東 2 北海道釧路市 0120600 北海道足寄町 0164700 北海道白糠町 0166800 2026-08-18T18:00:00+09:00 2026-08-18T21:00:00+09:00 降灰 70 +43.8604+144.3000/+43.8600+144.3002/+43.8587+144.3000/+43.8600+144.2970/+43.8604+144.3000/ +43.8444+144.2400/+43.8569+144.2600/+43.8565+144.2800/+43.8400+144.2933/+43.8200+144.2805/+43.8181+144.2800/+43.8000+144.2771/+43.7800+144.2740/+43.7600+144.2711/+43.7400+144.2702/+43.7200+144.2697/+43.7000+144.2653/+43.6923+144.2600/+43.6800+144.2549/+43.6600+144.2480/+43.6434+144.2400/+43.6400+144.2388/+43.6200+144.2310/+43.6077+144.2200/+43.6000+144.2152/+43.5839+144.2000/+43.5800+144.1975/+43.5600+144.1828/+43.5569+144.1800/+43.5400+144.1701/+43.5298+144.1600/+43.5200+144.1554/+43.5040+144.1400/+43.5000+144.1379/+43.4819+144.1200/+43.4800+144.1189/+43.4608+144.1000/+43.4600+144.0997/+43.4400+144.0892/+43.4308+144.0800/+43.4200+144.0778/+43.4022+144.0600/+43.4000+144.0598/+43.3801+144.0400/+43.3800+144.0399/+43.3602+144.0200/+43.3605+144.0000/+43.3800+143.9805/+43.4000+143.9802/+43.4200+143.9910/+43.4290+144.0000/+43.4400+144.0003/+43.4600+144.0073/+43.4728+144.0200/+43.4800+144.0212/+43.5000+144.0362/+43.5041+144.0400/+43.5200+144.0435/+43.5382+144.0600/+43.5400+144.0609/+43.5600+144.0680/+43.5741+144.0800/+43.5800+144.0825/+43.6000+144.0926/+43.6113+144.1000/+43.6200+144.1030/+43.6400+144.1113/+43.6600+144.1155/+43.6659+144.1200/+43.6800+144.1332/+43.6906+144.1400/+43.7000+144.1424/+43.7200+144.1475/+43.7400+144.1507/+43.7506+144.1600/+43.7600+144.1679/+43.7800+144.1795/+43.7807+144.1800/+43.8000+144.1978/+43.8037+144.2000/+43.8195+144.2200/+43.8200+144.2208/+43.8400+144.2366/+43.8444+144.2400/ 北東 60 北海道釧路市 0120600 北海道美幌町 0154300 北海道津別町 0154400 北海道大空町 0156400 北海道足寄町 0164700 北海道弟子屈町 0166500 北海道白糠町 0166800 小さな噴石の落下 75 1 +43.4196+144.0200/+43.4000+144.0397/+43.3800+144.0388/+43.3612+144.0200/+43.3614+144.0000/+43.3800+143.9814/+43.3986+144.0000/+43.4000+144.0012/+43.4196+144.0200/ 東 2 北海道釧路市 0120600 北海道足寄町 0164700 北海道白糠町 0166800 2026-08-18T21:00:00+09:00 2026-08-19T00:00:00+09:00 降灰 70 +43.9005+144.3200/+43.9102+144.3400/+43.9033+144.3600/+43.9000+144.3616/+43.8970+144.3600/+43.8800+144.3447/+43.8685+144.3400/+43.8600+144.3373/+43.8400+144.3269/+43.8321+144.3200/+43.8200+144.3099/+43.8078+144.3000/+43.8000+144.2952/+43.7800+144.2879/+43.7642+144.2800/+43.7600+144.2786/+43.7400+144.2715/+43.7200+144.2662/+43.7036+144.2600/+43.7000+144.2585/+43.6800+144.2443/+43.6719+144.2400/+43.6600+144.2358/+43.6400+144.2282/+43.6276+144.2200/+43.6200+144.2151/+43.6080+144.2000/+43.6000+144.1952/+43.5800+144.1802/+43.5798+144.1800/+43.5600+144.1699/+43.5495+144.1600/+43.5400+144.1565/+43.5230+144.1400/+43.5200+144.1386/+43.5000+144.1239/+43.4960+144.1200/+43.4800+144.1122/+43.4678+144.1000/+43.4600+144.0980/+43.4418+144.0800/+43.4400+144.0797/+43.4200+144.0730/+43.4067+144.0600/+43.4000+144.0597/+43.3802+144.0400/+43.3800+144.0398/+43.3603+144.0200/+43.3607+144.0000/+43.3800+143.9807/+43.4000+143.9803/+43.4200+143.9874/+43.4326+144.0000/+43.4400+144.0002/+43.4600+144.0033/+43.4767+144.0200/+43.4800+144.0206/+43.5000+144.0268/+43.5137+144.0400/+43.5200+144.0414/+43.5400+144.0511/+43.5504+144.0600/+43.5600+144.0626/+43.5800+144.0750/+43.5864+144.0800/+43.6000+144.0830/+43.6200+144.0917/+43.6329+144.1000/+43.6400+144.1025/+43.6600+144.1041/+43.6783+144.1200/+43.6800+144.1218/+43.7000+144.1335/+43.7077+144.1400/+43.7200+144.1448/+43.7400+144.1457/+43.7563+144.1600/+43.7600+144.1625/+43.7800+144.1722/+43.7915+144.1800/+43.8000+144.1872/+43.8155+144.2000/+43.8200+144.2081/+43.8285+144.2200/+43.8400+144.2338/+43.8465+144.2400/+43.8600+144.2573/+43.8622+144.2600/+43.8755+144.2800/+43.8800+144.2858/+43.8923+144.3000/+43.9000+144.3189/+43.9005+144.3200/ 北東 60 北海道釧路市 0120600 北海道網走市 0121100 北海道美幌町 0154300 北海道津別町 0154400 北海道大空町 0156400 北海道足寄町 0164700 北海道弟子屈町 0166500 北海道白糠町 0166800 小さな噴石の落下 75 1 +43.4199+144.0200/+43.4000+144.0398/+43.3800+144.0388/+43.3612+144.0200/+43.3800+144.0012/+43.4000+144.0012/+43.4199+144.0200/ 北東 2 北海道釧路市 0120600 北海道足寄町 0164700 北海道白糠町 0166800 　現在、雌阿寒岳は噴火警戒レベル２（火口周辺規制）です。雌阿寒岳で噴火が発生した場合には、１８日０９時から１２時までは火口から北東方向、１８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。 　１８日６時から１８日２４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 　１８日０６時から０９時まで　北東　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１８日０９時から１２時まで　北東　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１８日１２時から１５時まで　北東　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１８日１５時から１８時まで　北東　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１８日１８時から２１時まで　北東　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１８日２１時から２４時まで　北東　　　　　　６０ｋｍ　　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。 　北海道　：釧路市、美幌町、津別町、大空町、足寄町、弟子屈町、白糠町、網走市 　 　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。