2026-09-17T17:00:00Z 通常 気象庁本庁 気象庁 2026-09-18T02:00:00+09:00 2026-09-18T03:00:00+09:00 2026-09-18T21:00:00+09:00 503 発表 1 降灰予報 1.1_0 　現在、阿蘇山は噴火警戒レベル２（火口周辺規制）です。阿蘇山で噴火が発生した場合には、１８日０９時から１２時までは火口から西方向に降灰が予想されます。 降灰予報（定時） 06 阿蘇山 503 降灰 70 福岡県八女市 4021000 熊本県熊本市 4310000 熊本県荒尾市 4320400 熊本県玉名市 4320600 熊本県山鹿市 4320800 熊本県菊池市 4321000 熊本県阿蘇市 4321400 熊本県合志市 4321600 熊本県玉東町 4336400 熊本県長洲町 4336800 熊本県和水町 4336900 熊本県大津町 4340300 熊本県菊陽町 4340400 熊本県高森町 4342800 熊本県西原村 4343200 熊本県南阿蘇村 4343300 熊本県益城町 4344300 小さな噴石の落下 75 熊本県阿蘇市 4321400 熊本県南阿蘇村 4343300 降灰予報（定時） 06 阿蘇山 503 +3253.07+13106.23+1592/ 降灰 70 福岡県八女市 4021000 熊本県熊本市 4310000 熊本県荒尾市 4320400 熊本県玉名市 4320600 熊本県山鹿市 4320800 熊本県菊池市 4321000 熊本県阿蘇市 4321400 熊本県合志市 4321600 熊本県玉東町 4336400 熊本県長洲町 4336800 熊本県和水町 4336900 熊本県大津町 4340300 熊本県菊陽町 4340400 熊本県高森町 4342800 熊本県西原村 4343200 熊本県南阿蘇村 4343300 熊本県益城町 4344300 小さな噴石の落下 75 熊本県阿蘇市 4321400 熊本県南阿蘇村 4343300 2026-09-18T03:00:00+09:00 2026-09-18T06:00:00+09:00 降灰 70 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西 60 熊本県熊本市 4310000 熊本県荒尾市 4320400 熊本県玉名市 4320600 熊本県山鹿市 4320800 熊本県菊池市 4321000 熊本県阿蘇市 4321400 熊本県合志市 4321600 熊本県玉東町 4336400 熊本県長洲町 4336800 熊本県和水町 4336900 熊本県大津町 4340300 熊本県菊陽町 4340400 熊本県高森町 4342800 熊本県南阿蘇村 4343300 小さな噴石の落下 75 1 +32.9028+131.0800/+32.9000+131.0828/+32.8800+131.0988/+32.8612+131.0800/+32.8670+131.0600/+32.8800+131.0433/+32.8994+131.0600/+32.9000+131.0654/+32.9028+131.0800/ 西 2 熊本県阿蘇市 4321400 熊本県南阿蘇村 4343300 2026-09-18T06:00:00+09:00 2026-09-18T09:00:00+09:00 降灰 70 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西 60 熊本県熊本市 4310000 熊本県玉名市 4320600 熊本県山鹿市 4320800 熊本県菊池市 4321000 熊本県阿蘇市 4321400 熊本県合志市 4321600 熊本県玉東町 4336400 熊本県長洲町 4336800 熊本県和水町 4336900 熊本県大津町 4340300 熊本県菊陽町 4340400 熊本県高森町 4342800 熊本県南阿蘇村 4343300 小さな噴石の落下 75 1 +32.8997+131.0600/+32.8989+131.0800/+32.8800+131.0988/+32.8612+131.0800/+32.8650+131.0600/+32.8800+131.0421/+32.8997+131.0600/ 西 2 熊本県阿蘇市 4321400 熊本県南阿蘇村 4343300 2026-09-18T09:00:00+09:00 2026-09-18T12:00:00+09:00 降灰 70 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西 50 熊本県熊本市 4310000 熊本県玉名市 4320600 熊本県山鹿市 4320800 熊本県菊池市 4321000 熊本県阿蘇市 4321400 熊本県合志市 4321600 熊本県玉東町 4336400 熊本県和水町 4336900 熊本県大津町 4340300 熊本県菊陽町 4340400 熊本県高森町 4342800 熊本県西原村 4343200 熊本県南阿蘇村 4343300 熊本県益城町 4344300 小さな噴石の落下 75 1 +32.9151+131.0600/+32.9156+131.0800/+32.9000+131.0956/+32.8800+131.0988/+32.8612+131.0800/+32.8644+131.0600/+32.8762+131.0400/+32.8800+131.0342/+32.8965+131.0400/+32.9000+131.0403/+32.9151+131.0600/ 西 4 熊本県阿蘇市 4321400 熊本県南阿蘇村 4343300 2026-09-18T12:00:00+09:00 2026-09-18T15:00:00+09:00 降灰 70 +33.1417+130.6800/+33.1400+130.6805/+33.1200+130.6930/+33.1115+130.6800/+33.1200+130.6600/+33.1200+130.6599/+33.1206+130.6600/+33.1400+130.6737/+33.1417+130.6800/ 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西 50 福岡県八女市 4021000 熊本県熊本市 4310000 熊本県玉名市 4320600 熊本県山鹿市 4320800 熊本県菊池市 4321000 熊本県阿蘇市 4321400 熊本県合志市 4321600 熊本県玉東町 4336400 熊本県大津町 4340300 熊本県菊陽町 4340400 熊本県高森町 4342800 熊本県西原村 4343200 熊本県南阿蘇村 4343300 熊本県益城町 4344300 小さな噴石の落下 75 1 +32.9031+131.0400/+32.9157+131.0600/+32.9168+131.0800/+32.9000+131.0968/+32.8800+131.0988/+32.8612+131.0800/+32.8639+131.0600/+32.8777+131.0400/+32.8800+131.0364/+32.9000+131.0343/+32.9031+131.0400/ 西 5 熊本県阿蘇市 4321400 熊本県南阿蘇村 4343300 2026-09-18T15:00:00+09:00 2026-09-18T18:00:00+09:00 降灰 70 +33.0407+130.8000/+33.0400+130.8020/+33.0366+130.8200/+33.0200+130.8385/+33.0192+130.8400/+33.0070+130.8600/+33.0000+130.8667/+32.9882+130.8800/+32.9800+130.8898/+32.9685+130.9000/+32.9600+130.9147/+32.9511+130.9000/+32.9555+130.8800/+32.9600+130.8683/+32.9627+130.8600/+32.9712+130.8400/+32.9800+130.8279/+32.9857+130.8200/+32.9987+130.8000/+33.0000+130.7980/+33.0200+130.7881/+33.0400+130.7957/+33.0407+130.8000/ 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西 50 熊本県熊本市 4310000 熊本県玉名市 4320600 熊本県山鹿市 4320800 熊本県菊池市 4321000 熊本県阿蘇市 4321400 熊本県合志市 4321600 熊本県玉東町 4336400 熊本県大津町 4340300 熊本県菊陽町 4340400 熊本県高森町 4342800 熊本県西原村 4343200 熊本県南阿蘇村 4343300 熊本県益城町 4344300 小さな噴石の落下 75 1 +32.9132+131.0600/+32.9160+131.0800/+32.9000+131.0960/+32.8800+131.0988/+32.8612+131.0800/+32.8649+131.0600/+32.8800+131.0411/+32.9000+131.0413/+32.9132+131.0600/ 北西 3 熊本県阿蘇市 4321400 熊本県南阿蘇村 4343300 2026-09-18T18:00:00+09:00 2026-09-18T21:00:00+09:00 降灰 70 +32.9215+130.6600/+32.9209+130.6800/+32.9200+130.6993/+32.9200+130.7000/+32.9200+130.7002/+32.9232+130.7200/+32.9256+130.7400/+32.9275+130.7600/+32.9200+130.7692/+32.9178+130.7800/+32.9177+130.8000/+32.9180+130.8200/+32.9183+130.8400/+32.9178+130.8600/+32.9177+130.8800/+32.9187+130.9000/+32.9190+130.9200/+32.9199+130.9400/+32.9200+130.9600/+32.9199+130.9800/+32.9199+131.0000/+32.9198+131.0200/+32.9198+131.0400/+32.9199+131.0600/+32.9198+131.0800/+32.9000+131.0999/+32.8938+131.1000/+32.8800+131.1095/+32.8705+131.1000/+32.8601+131.0800/+32.8600+131.0779/+32.8423+131.0600/+32.8406+131.0400/+32.8404+131.0200/+32.8405+131.0000/+32.8403+130.9800/+32.8400+130.9631/+32.8380+130.9600/+32.8329+130.9400/+32.8264+130.9200/+32.8250+130.9000/+32.8232+130.8800/+32.8213+130.8600/+32.8205+130.8400/+32.8200+130.8363/+32.8121+130.8200/+32.8085+130.8000/+32.8035+130.7800/+32.8010+130.7600/+32.8000+130.7513/+32.7979+130.7400/+32.7963+130.7200/+32.7969+130.7000/+32.7994+130.6800/+32.8000+130.6772/+32.8028+130.6600/+32.8070+130.6400/+32.8135+130.6200/+32.8200+130.6034/+32.8215+130.6000/+32.8235+130.5800/+32.8262+130.5600/+32.8296+130.5400/+32.8333+130.5200/+32.8384+130.5000/+32.8400+130.4919/+32.8598+130.4800/+32.8600+130.4799/+32.8600+130.4800/+32.8698+130.5000/+32.8800+130.5120/+32.8877+130.5200/+32.9000+130.5312/+32.9029+130.5400/+32.9033+130.5600/+32.9067+130.5800/+32.9092+130.6000/+32.9143+130.6200/+32.9175+130.6400/+32.9200+130.6553/+32.9215+130.6600/ 西 60 熊本県熊本市 4310000 熊本県玉名市 4320600 熊本県菊池市 4321000 熊本県阿蘇市 4321400 熊本県合志市 4321600 熊本県玉東町 4336400 熊本県大津町 4340300 熊本県菊陽町 4340400 熊本県高森町 4342800 熊本県西原村 4343200 熊本県南阿蘇村 4343300 熊本県益城町 4344300 小さな噴石の落下 75 1 +32.9131+131.0600/+32.9152+131.0800/+32.9000+131.0952/+32.8800+131.0988/+32.8612+131.0800/+32.8648+131.0600/+32.8800+131.0407/+32.9000+131.0415/+32.9131+131.0600/ 北西 3 熊本県阿蘇市 4321400 熊本県南阿蘇村 4343300 　現在、阿蘇山は噴火警戒レベル２（火口周辺規制）です。阿蘇山で噴火が発生した場合には、１８日０９時から１２時までは火口から西方向に降灰が予想されます。 　１８日３時から１８日２１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０３時から０６時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１８日０６時から０９時まで　西　　　　　　　６０ｋｍ　　２ｋｍ　　　　　 　１８日０９時から１２時まで　西　　　　　　　５０ｋｍ　　４ｋｍ　　　　　 　１８日１２時から１５時まで　西　　　　　　　５０ｋｍ　　５ｋｍ　　　　　 　１８日１５時から１８時まで　西　　　　　　　５０ｋｍ　　３ｋｍ　　　　　 　１８日１８時から２１時まで　西　　　　　　　６０ｋｍ　　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。 　熊本県　：熊本市、荒尾市、玉名市、山鹿市、菊池市、阿蘇市、合志市、玉東町、長洲町、和水町、 　　　　　大津町、菊陽町、高森町、南阿蘇村、西原村、益城町 　福岡県　：八女市 　 　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。