The first day of the seven-day <a href="https://en.wikipedia.org/wiki/1972_Iran_blizzard" id="mwASc" rel="mw:WikiLink" title="1972 Iran blizzard">1972 Iran blizzard</a>, which would kill at least 4,000 people, making it the <a href="https://en.wikipedia.org/wiki/List_of_natural_disasters_by_death_toll#Blizzards" id="mwASg" rel="mw:WikiLink" title="List of natural disasters by death toll">deadliest snowstorm in history</a>.<sup about="#mwt88" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-16"}}' id="cite_ref-16" rel="dc:references" typeof="mw:Extension/ref"><a href="./February_3#cite_note-16" id="mwASk" style="counter-reset: mw-Ref 16;"><span class="mw-reflink-text" id="mwASo">[16]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-16"><cite about="#mwt85" class="citation book cs1" id="CITEREFMarlene_BradfordRobert_S._CarmichaelTracy_Irons-Georges2001">Marlene Bradford; Robert S. Carmichael; Tracy Irons-Georges (January 1, 2001). <a class="external text" href="https://books.google.com/books?id=OotFAAAAYAAJ" id="mwBvA" rel="mw:ExtLink nofollow"><i id="mwBvE">Natural Disasters: Avalanches-explosions</i></a>. Salem Press. p.<span id="mwBvI" typeof="mw:Entity"> </span>58. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwBvM" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwBvQ" typeof="mw:Entity"> </span><a href="./Special:BookSources/978-0-89356-072-0" id="mwBvU" rel="mw:WikiLink" title="Special:BookSources/978-0-89356-072-0"><bdi id="mwBvY">978-0-89356-072-0</bdi></a>.</cite><span about="#mwt85" class="Z3988" id="mwBvc" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Natural+Disasters%3A+Avalanches-explosions&amp;rft.pages=58&amp;rft.pub=Salem+Press&amp;rft.date=2001-01-01&amp;rft.isbn=978-0-89356-072-0&amp;rft.au=Marlene+Bradford&amp;rft.au=Robert+S.+Carmichael&amp;rft.au=Tracy+Irons-Georges&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DOotFAAAAYAAJ&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AFebruary+3"></span></span>