2026-07-16T11:00:00Z 通常 気象庁本庁 気象庁 2026-07-16T20:00:00+09:00 2026-07-16T21:00:00+09:00 2026-07-17T15:00:00+09:00 509 発表 1 降灰予報 1.1_0 　現在、口永良部島は噴火警戒レベル２（火口周辺規制）です。口永良部島で噴火が発生した場合には、１６日２１時から２４時までは火口から東方向、１７日０９時から１２時までは火口から東方向に降灰が予想されます。 降灰予報（定時） 06 口永良部島 509 降灰 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 鹿児島県屋久島町 4650500 降灰予報（定時） 06 口永良部島 509 +3026.60+13013.03+657/ 降灰 70 鹿児島県屋久島町 4650500 小さな噴石の落下 75 鹿児島県屋久島町 4650500 2026-07-16T21:00:00+09:00 2026-07-17T00:00:00+09:00 降灰 70 +30.5061+130.4800/+30.5072+130.5000/+30.5165+130.5200/+30.5166+130.5400/+30.5175+130.5600/+30.5194+130.5800/+30.5177+130.6000/+30.5139+130.6200/+30.5052+130.6400/+30.5000+130.6557/+30.4984+130.6600/+30.4890+130.6800/+30.4801+130.7000/+30.4800+130.7001/+30.4600+130.7015/+30.4538+130.7200/+30.4400+130.7276/+30.4342+130.7200/+30.4396+130.7000/+30.4400+130.6986/+30.4525+130.6800/+30.4495+130.6600/+30.4486+130.6400/+30.4441+130.6200/+30.4427+130.6000/+30.4405+130.5800/+30.4400+130.5784/+30.4320+130.5600/+30.4202+130.5400/+30.4200+130.5398/+30.4193+130.5400/+30.4000+130.5455/+30.3800+130.5490/+30.3600+130.5516/+30.3400+130.5564/+30.3200+130.5555/+30.3000+130.5460/+30.2800+130.5483/+30.2685+130.5400/+30.2624+130.5200/+30.2798+130.5000/+30.2800+130.4998/+30.2877+130.4800/+30.2923+130.4600/+30.3000+130.4519/+30.3200+130.4434/+30.3400+130.4408/+30.3600+130.4427/+30.3670+130.4400/+30.3800+130.4315/+30.3991+130.4200/+30.4000+130.4178/+30.4012+130.4000/+30.4011+130.3800/+30.4012+130.3600/+30.4015+130.3400/+30.4014+130.3200/+30.4013+130.3000/+30.4014+130.2800/+30.4021+130.2600/+30.4090+130.2400/+30.4200+130.2269/+30.4200+130.2200/+30.4400+130.2000/+30.4600+130.2002/+30.4798+130.2200/+30.4799+130.2400/+30.4798+130.2600/+30.4796+130.2800/+30.4794+130.3000/+30.4793+130.3200/+30.4794+130.3400/+30.4799+130.3600/+30.4800+130.3616/+30.4910+130.3800/+30.4957+130.4000/+30.4975+130.4200/+30.4984+130.4400/+30.4999+130.4600/+30.5000+130.4615/+30.5061+130.4800/ 東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4496+130.2400/+30.4400+130.2512/+30.4304+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-17T00:00:00+09:00 2026-07-17T03:00:00+09:00 降灰 70 +30.5308+130.5200/+30.5309+130.5400/+30.5311+130.5600/+30.5313+130.5800/+30.5305+130.6000/+30.5348+130.6200/+30.5304+130.6400/+30.5238+130.6600/+30.5200+130.6684/+30.5164+130.6800/+30.5112+130.7000/+30.5046+130.7200/+30.5000+130.7334/+30.4821+130.7400/+30.4800+130.7412/+30.4629+130.7600/+30.4606+130.7800/+30.4600+130.7879/+30.4576+130.7800/+30.4553+130.7600/+30.4486+130.7400/+30.4450+130.7200/+30.4460+130.7000/+30.4466+130.6800/+30.4470+130.6600/+30.4473+130.6400/+30.4485+130.6200/+30.4495+130.6000/+30.4496+130.5800/+30.4496+130.5600/+30.4467+130.5400/+30.4496+130.5200/+30.4451+130.5000/+30.4424+130.4800/+30.4405+130.4600/+30.4400+130.4545/+30.4333+130.4400/+30.4269+130.4200/+30.4236+130.4000/+30.4215+130.3800/+30.4206+130.3600/+30.4203+130.3400/+30.4201+130.3200/+30.4200+130.3008/+30.4197+130.3000/+30.4199+130.2800/+30.4200+130.2798/+30.4200+130.2600/+30.4200+130.2400/+30.4200+130.2200/+30.4400+130.2000/+30.4600+130.2002/+30.4798+130.2200/+30.4799+130.2400/+30.4799+130.2600/+30.4798+130.2800/+30.4797+130.3000/+30.4798+130.3200/+30.4800+130.3290/+30.4885+130.3400/+30.4947+130.3600/+30.4977+130.3800/+30.4986+130.4000/+30.5000+130.4200/+30.5000+130.4204/+30.5100+130.4400/+30.5137+130.4600/+30.5168+130.4800/+30.5176+130.5000/+30.5200+130.5068/+30.5308+130.5200/ +30.3927+130.5200/+30.3994+130.5400/+30.3862+130.5600/+30.3800+130.5626/+30.3600+130.5664/+30.3400+130.5712/+30.3200+130.5686/+30.3108+130.5600/+30.3085+130.5400/+30.3181+130.5200/+30.3200+130.5172/+30.3400+130.5102/+30.3600+130.5132/+30.3800+130.5041/+30.3927+130.5200/ 東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4510+130.2400/+30.4400+130.2533/+30.4290+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-17T03:00:00+09:00 2026-07-17T06:00:00+09:00 降灰 70 +30.4796+130.2200/+30.4796+130.2400/+30.4782+130.2600/+30.4718+130.2800/+30.4654+130.3000/+30.4614+130.3200/+30.4600+130.3296/+30.4600+130.3400/+30.4600+130.3507/+30.4613+130.3600/+30.4666+130.3800/+30.4713+130.4000/+30.4747+130.4200/+30.4756+130.4400/+30.4759+130.4600/+30.4777+130.4800/+30.4749+130.5000/+30.4696+130.5200/+30.4709+130.5400/+30.4652+130.5600/+30.4600+130.5771/+30.4572+130.5800/+30.4400+130.5939/+30.4200+130.5935/+30.4135+130.5800/+30.4000+130.5762/+30.3800+130.5755/+30.3600+130.5773/+30.3400+130.5760/+30.3200+130.5730/+30.3014+130.5600/+30.3000+130.5571/+30.2850+130.5400/+30.2807+130.5200/+30.2884+130.5000/+30.2987+130.4800/+30.2996+130.4600/+30.3000+130.4596/+30.3200+130.4435/+30.3388+130.4400/+30.3400+130.4388/+30.3600+130.4221/+30.3615+130.4200/+30.3676+130.4000/+30.3800+130.3838/+30.3808+130.3800/+30.3823+130.3600/+30.3843+130.3400/+30.3894+130.3200/+30.4000+130.3054/+30.4001+130.3000/+30.4003+130.2800/+30.4004+130.2600/+30.4011+130.2400/+30.4106+130.2200/+30.4200+130.2106/+30.4400+130.2000/+30.4600+130.2004/+30.4796+130.2200/ +30.4404+130.6600/+30.4424+130.6800/+30.4400+130.6878/+30.4307+130.7000/+30.4290+130.7200/+30.4200+130.7385/+30.4192+130.7400/+30.4155+130.7600/+30.4058+130.7800/+30.4000+130.7900/+30.3932+130.7800/+30.3851+130.7600/+30.3841+130.7400/+30.3824+130.7200/+30.3897+130.7000/+30.4000+130.6817/+30.4130+130.6800/+30.4200+130.6771/+30.4383+130.6600/+30.4400+130.6568/+30.4404+130.6600/ 東 50 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4510+130.2400/+30.4400+130.2534/+30.4290+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-17T06:00:00+09:00 2026-07-17T09:00:00+09:00 降灰 70 +30.4796+130.2200/+30.4795+130.2400/+30.4761+130.2600/+30.4628+130.2800/+30.4600+130.2888/+30.4599+130.3000/+30.4598+130.3200/+30.4597+130.3400/+30.4598+130.3600/+30.4600+130.3800/+30.4600+130.3802/+30.4661+130.4000/+30.4719+130.4200/+30.4707+130.4400/+30.4652+130.4600/+30.4644+130.4800/+30.4600+130.4837/+30.4400+130.4932/+30.4380+130.5000/+30.4289+130.5200/+30.4200+130.5256/+30.4164+130.5200/+30.4042+130.5000/+30.4000+130.4983/+30.3823+130.4800/+30.3800+130.4795/+30.3764+130.4800/+30.3600+130.4996/+30.3585+130.5000/+30.3400+130.5134/+30.3260+130.5200/+30.3200+130.5234/+30.3000+130.5299/+30.2906+130.5400/+30.2800+130.5504/+30.2600+130.5490/+30.2533+130.5400/+30.2445+130.5200/+30.2517+130.5000/+30.2600+130.4842/+30.2615+130.4800/+30.2701+130.4600/+30.2800+130.4530/+30.3000+130.4405/+30.3030+130.4400/+30.3200+130.4229/+30.3239+130.4200/+30.3395+130.4000/+30.3400+130.3963/+30.3600+130.3823/+30.3627+130.3800/+30.3764+130.3600/+30.3800+130.3581/+30.3812+130.3400/+30.3814+130.3200/+30.3863+130.3000/+30.4000+130.2829/+30.4000+130.2800/+30.4002+130.2600/+30.4005+130.2400/+30.4044+130.2200/+30.4200+130.2044/+30.4400+130.2000/+30.4600+130.2004/+30.4796+130.2200/ 東 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4495+130.2400/+30.4400+130.2511/+30.4302+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-17T09:00:00+09:00 2026-07-17T12:00:00+09:00 降灰 70 +30.4796+130.2200/+30.4796+130.2400/+30.4784+130.2600/+30.4752+130.2800/+30.4724+130.3000/+30.4675+130.3200/+30.4684+130.3400/+30.4670+130.3600/+30.4651+130.3800/+30.4669+130.4000/+30.4712+130.4200/+30.4721+130.4400/+30.4691+130.4600/+30.4655+130.4800/+30.4600+130.4877/+30.4493+130.4800/+30.4400+130.4781/+30.4291+130.4800/+30.4200+130.4857/+30.4000+130.4871/+30.3931+130.4800/+30.3800+130.4776/+30.3600+130.4751/+30.3400+130.4761/+30.3200+130.4798/+30.3194+130.4800/+30.3072+130.5000/+30.3000+130.5046/+30.2814+130.5200/+30.2800+130.5220/+30.2600+130.5251/+30.2547+130.5200/+30.2430+130.5000/+30.2411+130.4800/+30.2420+130.4600/+30.2600+130.4462/+30.2800+130.4420/+30.2851+130.4400/+30.3000+130.4252/+30.3066+130.4200/+30.3200+130.4036/+30.3218+130.4000/+30.3400+130.3824/+30.3565+130.3800/+30.3600+130.3781/+30.3645+130.3600/+30.3800+130.3425/+30.3806+130.3400/+30.3817+130.3200/+30.3856+130.3000/+30.4000+130.2843/+30.4001+130.2800/+30.4002+130.2600/+30.4005+130.2400/+30.4029+130.2200/+30.4200+130.2029/+30.4400+130.2000/+30.4600+130.2004/+30.4796+130.2200/ 東 40 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4474+130.2400/+30.4400+130.2490/+30.4311+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 2026-07-17T12:00:00+09:00 2026-07-17T15:00:00+09:00 降灰 70 +30.4797+130.2200/+30.4797+130.2400/+30.4790+130.2600/+30.4774+130.2800/+30.4759+130.3000/+30.4744+130.3200/+30.4728+130.3400/+30.4723+130.3600/+30.4719+130.3800/+30.4722+130.4000/+30.4749+130.4200/+30.4771+130.4400/+30.4741+130.4600/+30.4736+130.4800/+30.4600+130.4981/+30.4450+130.5000/+30.4400+130.5067/+30.4327+130.5200/+30.4200+130.5239/+30.4176+130.5200/+30.4049+130.5000/+30.4000+130.4985/+30.3832+130.4800/+30.3800+130.4791/+30.3600+130.4777/+30.3400+130.4792/+30.3200+130.4797/+30.3185+130.4800/+30.3000+130.4985/+30.2969+130.5000/+30.2800+130.5143/+30.2600+130.5145/+30.2514+130.5000/+30.2486+130.4800/+30.2493+130.4600/+30.2600+130.4511/+30.2800+130.4453/+30.3000+130.4417/+30.3061+130.4400/+30.3200+130.4252/+30.3258+130.4200/+30.3400+130.4023/+30.3411+130.4000/+30.3600+130.3850/+30.3693+130.3800/+30.3800+130.3669/+30.3814+130.3600/+30.3831+130.3400/+30.3871+130.3200/+30.4000+130.3041/+30.4002+130.3000/+30.4003+130.2800/+30.4004+130.2600/+30.4010+130.2400/+30.4089+130.2200/+30.4200+130.2089/+30.4400+130.2000/+30.4600+130.2002/+30.4797+130.2200/ 東 30 鹿児島県屋久島町 4650500 小さな噴石の落下 75 1 +30.4588+130.2200/+30.4451+130.2400/+30.4400+130.2461/+30.4349+130.2400/+30.4212+130.2200/+30.4400+130.2012/+30.4588+130.2200/ 東 2 鹿児島県屋久島町 4650500 　現在、口永良部島は噴火警戒レベル２（火口周辺規制）です。口永良部島で噴火が発生した場合には、１６日２１時から２４時までは火口から東方向、１７日０９時から１２時までは火口から東方向に降灰が予想されます。 　１６日２１時から１７日１５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 　１６日２１時から２４時まで　東　　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１７日００時から０３時まで　東　　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１７日０３時から０６時まで　東　　　　　　　５０ｋｍ　　２ｋｍ　　　　　 　１７日０６時から０９時まで　東　　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１７日０９時から１２時まで　東　　　　　　　４０ｋｍ　　２ｋｍ　　　　　 　１７日１２時から１５時まで　東　　　　　　　３０ｋｍ　　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。 　鹿児島県：屋久島町 　 　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。