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<Title>降灰予報（定時）</Title>
<DateTime>2026-04-11T11:00:00Z</DateTime>
<Status>通常</Status>
<EditorialOffice>気象庁本庁</EditorialOffice>
<PublishingOffice>気象庁</PublishingOffice>
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<Title>火山名　浅間山　降灰予報（定時）</Title>
<ReportDateTime>2026-04-11T20:00:00+09:00</ReportDateTime>
<TargetDateTime>2026-04-11T21:00:00+09:00</TargetDateTime>
<ValidDateTime>2026-04-12T15:00:00+09:00</ValidDateTime>
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<InfoType>発表</InfoType>
<Serial>1</Serial>
<InfoKind>降灰予報</InfoKind>
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<Text>　現在、浅間山は噴火警戒レベル２（火口周辺規制）です。浅間山で噴火が発生した場合には、１１日２１時から２４時までは火口から東方向、１２日０９時から１２時までは火口から南東方向に降灰が予想されます。</Text>
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<Name>茨城県古河市</Name>
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<Name>栃木県栃木市</Name>
<Code>0920300</Code>
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<Name>栃木県野木町</Name>
<Code>0936400</Code>
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<Name>群馬県前橋市</Name>
<Code>1020100</Code>
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<VolcanoInfoContent>
<VolcanoHeadline>　現在、浅間山は噴火警戒レベル２（火口周辺規制）です。浅間山で噴火が発生した場合には、１１日２１時から２４時までは火口から東方向、１２日０９時から１２時までは火口から南東方向に降灰が予想されます。</VolcanoHeadline>
<VolcanoActivity>　１１日２１時から１２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
　１１日２１時から２４時まで　東　　　　　　　１１０ｋｍ　９ｋｍ　　　　　
　１２日００時から０３時まで　東　　　　　　　１１０ｋｍ　９ｋｍ　　　　　
　１２日０３時から０６時まで　南東　　　　　　１１０ｋｍ　９ｋｍ　　　　　
　１２日０６時から０９時まで　南東　　　　　　１００ｋｍ　１０ｋｍ　　　　
　１２日０９時から１２時まで　南東　　　　　　７０ｋｍ　　７ｋｍ　　　　　
　１２日１２時から１５時まで　南東　　　　　　６０ｋｍ　　４ｋｍ　　　　　

　
　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。
　茨城県　：古河市
　栃木県　：栃木市、野木町
　群馬県　：前橋市、高崎市、伊勢崎市、太田市、館林市、藤岡市、富岡市、安中市、長野原町、嬬恋村、
　　　　　玉村町、板倉町、明和町、千代田町、大泉町、邑楽町、甘楽町、神流町、下仁田町
　埼玉県　：熊谷市、行田市、加須市、本庄市、羽生市、深谷市、神川町、上里町、鴻巣市、久喜市、
　　　　　美里町、寄居町、東松山市、上尾市、桶川市、北本市、滑川町、嵐山町、小川町、川島町、
　　　　　吉見町、長瀞町、川越市、秩父市、坂戸市、鳩山町、ときがわ町、皆野町、東秩父村
　長野県　：軽井沢町、御代田町
　</VolcanoActivity>
<VolcanoPrevention>　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。</VolcanoPrevention>
</VolcanoInfoContent>
</Body>
</Report>
