{"id":91,"date":"2005-12-09T14:38:19","date_gmt":"2005-12-09T18:38:19","guid":{"rendered":"http:\/\/blogs.law.harvard.edu\/fensterm\/2005\/12\/09\/thundersnow\/"},"modified":"2005-12-09T14:38:19","modified_gmt":"2005-12-09T18:38:19","slug":"thundersnow","status":"publish","type":"post","link":"https:\/\/archive.blogs.harvard.edu\/fensterm\/2005\/12\/09\/thundersnow\/","title":{"rendered":"Thundersnow"},"content":{"rendered":"<p><a name='a223'><\/a><\/p>\n<p>If you were at or near Harvard at about 2:00 PM today, you were<br \/>\nundoubtedly aware of heavy snowfall. You may also have seen a bright<br \/>\nflash followed by a loud bang. At 2:10 PM the National Weather Service<br \/>\n<a href=\"http:\/\/www.erh.noaa.gov\/showsigwx.php?warnzone=MAZ014&amp;warncounty=MAC017&amp;local_place1=Cambridge&amp;product1=Hazardous+Weather+Outlook\">advised that thundersnow is possible this afternoon<\/a>. Nothing quite like post-mortem prognostication.<\/p>\n<p>Thunder and lightning during a snowstorm, while rare, obviously can<br \/>\noccur. The makings of any thunderstorm is cold air at altitude lying<br \/>\nover warm moist air at ground level. While it is easy to see how this<br \/>\ncan occur over a lake on a hot summer&#8217;s day, extreme cold air at<br \/>\naltitude can provide adequate temperature contrast in winter.<br \/>\nThundersnow is more likely to be associated with large snowstorms than<br \/>\nsmall. It is also more likely near water. Very rapid heavy snowfall<br \/>\nusually accompanies thundersnow.<\/p>\n<p>The question of early closing of the libraries may well be moot. This<br \/>\nthing will probably dump a bunch of snow and be over before we can<br \/>\nclear out.<\/p>\n<p>Update [2:49 PM] : In fact, the predicted mixing to rain appears to occurring.<\/p>\n<p>Stay tuned if you&#8217;re interested in convection and charge separation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you were at or near Harvard at about 2:00 PM today, you were undoubtedly aware of heavy snowfall. You may also have seen a bright flash followed by a loud bang. At 2:10 PM the National Weather Service advised that thundersnow is possible this afternoon. Nothing quite like post-mortem prognostication. Thunder and lightning during [&hellip;]<\/p>\n","protected":false},"author":168,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-91","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/archive.blogs.harvard.edu\/fensterm\/wp-json\/wp\/v2\/posts\/91","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/archive.blogs.harvard.edu\/fensterm\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/archive.blogs.harvard.edu\/fensterm\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/archive.blogs.harvard.edu\/fensterm\/wp-json\/wp\/v2\/users\/168"}],"replies":[{"embeddable":true,"href":"https:\/\/archive.blogs.harvard.edu\/fensterm\/wp-json\/wp\/v2\/comments?post=91"}],"version-history":[{"count":0,"href":"https:\/\/archive.blogs.harvard.edu\/fensterm\/wp-json\/wp\/v2\/posts\/91\/revisions"}],"wp:attachment":[{"href":"https:\/\/archive.blogs.harvard.edu\/fensterm\/wp-json\/wp\/v2\/media?parent=91"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive.blogs.harvard.edu\/fensterm\/wp-json\/wp\/v2\/categories?post=91"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive.blogs.harvard.edu\/fensterm\/wp-json\/wp\/v2\/tags?post=91"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}