2026-08-03T23:00:00Z 通常 気象庁本庁 気象庁 2026-08-04T08:00:00+09:00 2026-08-04T09:00:00+09:00 2026-08-05T03:00:00+09:00 506 発表 1 降灰予報 1.1_0 　現在、桜島は噴火警戒レベル３（入山規制）です。桜島で噴火が発生した場合には、４日０９時から１２時までは火口から南西方向、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 桜島 506 降灰 70 鹿児島県鹿児島市 4620100 鹿児島県枕崎市 4620400 鹿児島県日置市 4621600 鹿児島県南さつま市 4622000 鹿児島県南九州市 4622300 小さな噴石の落下 75 鹿児島県鹿児島市 4620100 降灰予報（定時） 06 桜島 506 +3135.55+13039.40+1117/ 降灰 70 鹿児島県鹿児島市 4620100 鹿児島県枕崎市 4620400 鹿児島県日置市 4621600 鹿児島県南さつま市 4622000 鹿児島県南九州市 4622300 小さな噴石の落下 75 鹿児島県鹿児島市 4620100 2026-08-04T09:00:00+09:00 2026-08-04T12:00:00+09:00 降灰 70 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南西 80 鹿児島県鹿児島市 4620100 鹿児島県枕崎市 4620400 鹿児島県日置市 4621600 鹿児島県南さつま市 4622000 鹿児島県南九州市 4622300 小さな噴石の落下 75 1 +31.5895+130.6200/+31.5988+130.6400/+31.5988+130.6600/+31.5800+130.6788/+31.5600+130.6770/+31.5430+130.6600/+31.5415+130.6400/+31.5475+130.6200/+31.5557+130.6000/+31.5600+130.5959/+31.5624+130.6000/+31.5800+130.6105/+31.5895+130.6200/ 西 6 鹿児島県鹿児島市 4620100 2026-08-04T12:00:00+09:00 2026-08-04T15:00:00+09:00 降灰 70 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南西 80 鹿児島県鹿児島市 4620100 鹿児島県枕崎市 4620400 鹿児島県日置市 4621600 鹿児島県南さつま市 4622000 鹿児島県南九州市 4622300 小さな噴石の落下 75 1 +31.5904+130.6200/+31.5988+130.6400/+31.5988+130.6600/+31.5800+130.6788/+31.5600+130.6776/+31.5424+130.6600/+31.5422+130.6400/+31.5476+130.6200/+31.5600+130.6020/+31.5800+130.6096/+31.5904+130.6200/ 南西 4 鹿児島県鹿児島市 4620100 2026-08-04T15:00:00+09:00 2026-08-04T18:00:00+09:00 降灰 70 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南西 80 鹿児島県鹿児島市 4620100 鹿児島県枕崎市 4620400 鹿児島県日置市 4621600 鹿児島県南さつま市 4622000 鹿児島県南九州市 4622300 小さな噴石の落下 75 1 +31.5907+130.6200/+31.5988+130.6400/+31.5988+130.6600/+31.5800+130.6788/+31.5600+130.6764/+31.5436+130.6600/+31.5418+130.6400/+31.5493+130.6200/+31.5600+130.6008/+31.5800+130.6093/+31.5907+130.6200/ 南西 4 鹿児島県鹿児島市 4620100 2026-08-04T18:00:00+09:00 2026-08-04T21:00:00+09:00 降灰 70 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西 80 鹿児島県鹿児島市 4620100 鹿児島県枕崎市 4620400 鹿児島県日置市 4621600 鹿児島県南さつま市 4622000 鹿児島県南九州市 4622300 小さな噴石の落下 75 1 +31.5854+130.6200/+31.5988+130.6400/+31.5988+130.6600/+31.5800+130.6788/+31.5600+130.6775/+31.5425+130.6600/+31.5418+130.6400/+31.5435+130.6200/+31.5600+130.6015/+31.5800+130.6142/+31.5854+130.6200/ 南西 4 鹿児島県鹿児島市 4620100 2026-08-04T21:00:00+09:00 2026-08-05T00:00:00+09:00 降灰 70 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西 90 鹿児島県鹿児島市 4620100 鹿児島県枕崎市 4620400 鹿児島県日置市 4621600 鹿児島県南さつま市 4622000 鹿児島県南九州市 4622300 小さな噴石の落下 75 1 +31.5884+130.6200/+31.5988+130.6400/+31.5988+130.6600/+31.5800+130.6788/+31.5600+130.6782/+31.5418+130.6600/+31.5416+130.6400/+31.5471+130.6200/+31.5527+130.6000/+31.5600+130.5979/+31.5610+130.6000/+31.5800+130.6116/+31.5884+130.6200/ 西 6 鹿児島県鹿児島市 4620100 2026-08-05T00:00:00+09:00 2026-08-05T03:00:00+09:00 降灰 70 +31.5960+130.5800/+31.6000+130.6000/+31.6000+130.6200/+31.6000+130.6400/+31.6000+130.6600/+31.5800+130.6800/+31.5600+130.6800/+31.5400+130.6600/+31.5400+130.6558/+31.5242+130.6400/+31.5200+130.6200/+31.5200+130.6183/+31.5017+130.6000/+31.5000+130.5800/+31.5000+130.5771/+31.4829+130.5600/+31.4801+130.5400/+31.4800+130.5382/+31.4610+130.5200/+31.4600+130.5155/+31.4415+130.5000/+31.4433+130.4800/+31.4403+130.4600/+31.4400+130.4576/+31.4230+130.4400/+31.4200+130.4268/+31.4011+130.4200/+31.4000+130.4196/+31.3880+130.4000/+31.3822+130.3800/+31.3802+130.3600/+31.3800+130.3570/+31.3626+130.3400/+31.3600+130.3380/+31.3400+130.3310/+31.3345+130.3200/+31.3221+130.3000/+31.3209+130.2800/+31.3200+130.2736/+31.3000+130.2643/+31.2948+130.2600/+31.2800+130.2492/+31.2691+130.2400/+31.2600+130.2278/+31.2553+130.2200/+31.2495+130.2000/+31.2437+130.1800/+31.2415+130.1600/+31.2400+130.1541/+31.2200+130.1421/+31.2182+130.1400/+31.2057+130.1200/+31.2021+130.1000/+31.2000+130.0800/+31.2000+130.0799/+31.1866+130.0600/+31.1800+130.0521/+31.1732+130.0400/+31.1645+130.0200/+31.1601+130.0000/+31.1600+129.9999/+31.1489+129.9800/+31.1433+129.9600/+31.1400+129.9490/+31.1327+129.9400/+31.1204+129.9200/+31.1200+129.9189/+31.1146+129.9000/+31.1176+129.8800/+31.1200+129.8678/+31.1219+129.8600/+31.1286+129.8400/+31.1399+129.8200/+31.1400+129.8198/+31.1457+129.8000/+31.1469+129.7800/+31.1495+129.7600/+31.1600+129.7413/+31.1609+129.7400/+31.1800+129.7210/+31.1812+129.7200/+31.2000+129.7071/+31.2200+129.7088/+31.2400+129.7101/+31.2600+129.7105/+31.2800+129.7102/+31.3000+129.7098/+31.3124+129.7200/+31.3200+129.7278/+31.3297+129.7400/+31.3387+129.7600/+31.3400+129.7679/+31.3426+129.7800/+31.3456+129.8000/+31.3600+129.8147/+31.3800+129.8166/+31.3933+129.8200/+31.4000+129.8245/+31.4116+129.8400/+31.4200+129.8588/+31.4205+129.8600/+31.4257+129.8800/+31.4310+129.9000/+31.4400+129.9116/+31.4429+129.9200/+31.4466+129.9400/+31.4600+129.9554/+31.4652+129.9600/+31.4800+129.9721/+31.4845+129.9800/+31.4903+130.0000/+31.4971+130.0200/+31.5000+130.0368/+31.5041+130.0400/+31.5155+130.0600/+31.5182+130.0800/+31.5200+130.0964/+31.5203+130.1000/+31.5390+130.1200/+31.5319+130.1400/+31.5391+130.1600/+31.5400+130.1607/+31.5505+130.1800/+31.5538+130.2000/+31.5555+130.2200/+31.5400+130.2393/+31.5398+130.2400/+31.5400+130.2430/+31.5481+130.2600/+31.5535+130.2800/+31.5558+130.3000/+31.5580+130.3200/+31.5589+130.3400/+31.5518+130.3600/+31.5553+130.3800/+31.5591+130.4000/+31.5596+130.4200/+31.5599+130.4400/+31.5600+130.4524/+31.5643+130.4600/+31.5770+130.4800/+31.5787+130.5000/+31.5798+130.5200/+31.5800+130.5400/+31.5800+130.5600/+31.5800+130.5640/+31.5960+130.5800/ 南西 100 鹿児島県鹿児島市 4620100 鹿児島県枕崎市 4620400 鹿児島県日置市 4621600 鹿児島県南さつま市 4622000 鹿児島県南九州市 4622300 小さな噴石の落下 75 1 +31.5854+130.6200/+31.5988+130.6400/+31.5988+130.6600/+31.5800+130.6788/+31.5600+130.6781/+31.5419+130.6600/+31.5414+130.6400/+31.5405+130.6200/+31.5400+130.6143/+31.5369+130.6000/+31.5400+130.5932/+31.5600+130.5926/+31.5643+130.6000/+31.5800+130.6146/+31.5854+130.6200/ 南西 7 鹿児島県鹿児島市 4620100 　現在、桜島は噴火警戒レベル３（入山規制）です。桜島で噴火が発生した場合には、４日０９時から１２時までは火口から南西方向、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　南西（鹿児島市谷山方向）　８０ｋｍ　　６ｋｍ　　　　　 　０４日１２時から１５時まで　南西（鹿児島市谷山方向）　８０ｋｍ　　４ｋｍ　　　　　 　０４日１５時から１８時まで　南西（鹿児島市谷山方向）　８０ｋｍ　　４ｋｍ　　　　　 　０４日１８時から２１時まで　西（鹿児島市街方向）　　　８０ｋｍ　　４ｋｍ　　　　　 　０４日２１時から２４時まで　西（鹿児島市街方向）　　　９０ｋｍ　　６ｋｍ　　　　　 　０５日００時から０３時まで　南西（鹿児島市谷山方向）　１００ｋｍ　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：鹿児島市、日置市、南さつま市、南九州市、枕崎市 　 　噴煙が火口縁上３０００ｍ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。