2026-09-03T23:00:00Z 通常 気象庁本庁 気象庁 2026-09-04T08:00:00+09:00 2026-09-04T09:00:00+09:00 2026-09-05T03:00:00+09:00 508 発表 1 降灰予報 1.1_0 　現在、薩摩硫黄島は噴火警戒レベル２（火口周辺規制）です。薩摩硫黄島で噴火が発生した場合には、４日０９時から１２時までは火口から北西方向、４日２１時から２４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 薩摩硫黄島 508 降灰 70 鹿児島県三島村 4630300 小さな噴石の落下 75 鹿児島県三島村 4630300 降灰予報（定時） 06 薩摩硫黄島 508 +3047.58+13018.32+704/ 降灰 70 鹿児島県三島村 4630300 小さな噴石の落下 75 鹿児島県三島村 4630300 2026-09-04T09:00:00+09:00 2026-09-04T12:00:00+09:00 降灰 70 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北西 90 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8460+130.2600/+30.8448+130.2800/+30.8400+130.2847/+30.8363+130.3000/+30.8200+130.3163/+30.8000+130.3188/+30.7812+130.3000/+30.7831+130.2800/+30.8000+130.2631/+30.8136+130.2600/+30.8200+130.2520/+30.8400+130.2517/+30.8460+130.2600/ 北西 7 鹿児島県三島村 4630300 2026-09-04T15:00:00+09:00 2026-09-04T18:00:00+09:00 降灰 70 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北西 90 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8491+130.2600/+30.8466+130.2800/+30.8400+130.2865/+30.8365+130.3000/+30.8200+130.3165/+30.8000+130.3188/+30.7812+130.3000/+30.7824+130.2800/+30.8000+130.2606/+30.8041+130.2600/+30.8200+130.2447/+30.8400+130.2482/+30.8491+130.2600/ 北西 7 鹿児島県三島村 4630300 2026-09-04T18:00:00+09:00 2026-09-04T21:00:00+09:00 降灰 70 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北西 80 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8411+130.2600/+30.8427+130.2800/+30.8400+130.2827/+30.8200+130.2958/+30.8189+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7819+130.2800/+30.7883+130.2600/+30.7991+130.2400/+30.8000+130.2384/+30.8200+130.2359/+30.8275+130.2400/+30.8400+130.2549/+30.8411+130.2600/ 北西 7 鹿児島県三島村 4630300 2026-09-04T21:00:00+09:00 2026-09-05T00:00:00+09:00 降灰 70 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+30.9106+129.9200/+30.9004+129.9400/+30.9000+129.9409/+30.8994+129.9400/+30.8901+129.9200/+30.9000+129.9049/+30.9106+129.9200/ 西 70 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8253+130.2400/+30.8319+130.2600/+30.8326+130.2800/+30.8200+130.2926/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7817+130.2800/+30.7836+130.2600/+30.7924+130.2400/+30.8000+130.2257/+30.8200+130.2280/+30.8253+130.2400/ 北西 7 鹿児島県三島村 4630300 2026-09-05T00:00:00+09:00 2026-09-05T03:00:00+09:00 降灰 70 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西 90 鹿児島県三島村 4630300 小さな噴石の落下 75 1 +30.8245+130.2400/+30.8314+130.2600/+30.8328+130.2800/+30.8200+130.2928/+30.8188+130.3000/+30.8000+130.3188/+30.7812+130.3000/+30.7817+130.2800/+30.7865+130.2600/+30.7961+130.2400/+30.8000+130.2310/+30.8200+130.2303/+30.8245+130.2400/ 北西 7 鹿児島県三島村 4630300 　現在、薩摩硫黄島は噴火警戒レベル２（火口周辺規制）です。薩摩硫黄島で噴火が発生した場合には、４日０９時から１２時までは火口から北西方向、４日２１時から２４時までは火口から西方向に降灰が予想されます。 　４日９時から５日３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 　０４日０９時から１２時まで　北西　　　　　　７０ｋｍ　　６ｋｍ　　　　　 　０４日１２時から１５時まで　北西　　　　　　９０ｋｍ　　７ｋｍ　　　　　 　０４日１５時から１８時まで　北西　　　　　　９０ｋｍ　　７ｋｍ　　　　　 　０４日１８時から２１時まで　北西　　　　　　８０ｋｍ　　７ｋｍ　　　　　 　０４日２１時から２４時まで　西　　　　　　　７０ｋｍ　　７ｋｍ　　　　　 　０５日００時から０３時まで　西　　　　　　　９０ｋｍ　　７ｋｍ　　　　　 　 　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。 　鹿児島県：三島村 　 　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。 　強風のため、遠方まで小さな噴石が流されるおそれがあります。