De cualquer forma, as casas nos Estados Unidos dan a impressao de ser mui "frágiles", nao? Mais em zonas de tornados e tormentas...
Agora hai um buraco violeta, a iso -30º, nos estados de Michigan e Wisconsin
Ontem a temperatura foi já mui fria em toda a zona dos Grandes Lagos:
Thunder Bay (Ontario, Canada): -25,6º / -32,9º (media mes mais frio, -15º)
Minneapolis (Minnesota): -17,2º / -25,0º (media, -11º)
Duluth (Minnesotta): -22,8º / -31,7º (media, -13º)
Milwaukee (Wisconsin): -13,3º / -23,3º (media, -7º)
Chicago (Illinois): -11,7º / -21,1º (media, -5º)
Detroit (Michigan): -8,3º / -18,9º (media, -3º)
Buffalo (Nova Iorque): -7,2º / -16,7º (media, -5º)
.
State College, PA) - A powerful storm with wide-ranging effects will produce a lengthy period of freezing rain across parts of the southern Plains, raising the potential for damaging ice accumulations, dangerous travel conditions and extended power outages.
Colder air continues to pour through the central Plains this morning, with places that set record highs on Thursday plunging through the 20s this morning. As moisture lifts north from the Gulf, light rain will become more common across northern Texas and Oklahoma today. The surge of arctic air cutting under this warm layer will cause rain to freeze on surfaces across much of Oklahoma and northern Texas. The storm will reorganize over Texas, so freezing rain will fall for much of the weekend.
http://wwwa.accuweather.com/news-top-headline.asp?partner=accuweather&traveler=0
...rios e a baía de Delaware, com gelo a uma latitude de só 40º 
