Snowstorms happen when a mass of very cold air moves away from the polar regions. When it collides with a warm air mass, the warm air rises quickly and the cold air cuts underneath it. This causes a huge cloud bank to form, leading to heavy snowfall.
library.thinkquest.org/C003603/english/snowstorms/theca... library.thinkquest.org/C003603/english/snowstorms/thecauses.shtml
A snow storm is usually the result of the warm air associated with an extratropical cyclone (as in the diagram above) flowing up and over the cold air surrounding part of the cyclone. The air being lifted, combined with the abundant water v...
http://www.weatherquestions.com/What_causes_snow.htm
Page last updated at 16:27 GMT, Thursday, 10 December 200 ... Blizzards in the Midwest of the US have brought record snowfalls, burying cars, closing schools and causing power cuts. ... Wisconsin declared a state of emergency after getting up to 48cm (19 inches) of snow on Wednesday, and Iowa recorded the worst snowfall for...
news.bbc.co.uk/2/hi/americas/8406683.stm
CHICAGO, March 16, 2006 - United Airlines has revised its ticketing policies for its customers with travel plans to and from Chicago and Rockford, Ill., and Madison and Milwaukee, Wis., affected by the Chicago snowstorm.
www.united.com/page/article/0,6722,51261,00.html
ST. LOUIS — The second winter storm of the season brought 8 inches of snow to the St. Louis area on Friday, ... Temperatures are expected to climb above freezing starting Saturday, and the snow could ... The same storm that dumped 5 inches of snow on the Springfield area on Thursday grew even more intense as it traveled east.
www.columbiamissourian.com/stories/2008/02/01/snowstorm... www.columbiamissourian.com/stories/2008/02/01/snowstorm-causes-airport-delays-and-interstate-clo/
After a few days of mild weather and clear lawns, heavy snow caused numerous accidents throughout central and southern New Hampshire on Monday state police said they were buried and at least 200 schools were closed. ... Snowstorm brings reminder that winter is still here...
www.usatoday.com/weather/storms/2006-01-23-nh-snow_x.ht... www.usatoday.com/weather/storms/2006-01-23-nh-snow_x.htm
Light snow dusted parts of the upper Midwest yesterday, a day after a spring storm grounded hundreds of flights and coated roads with ... Some areas of northern Illinois reported up to 15 centimeters of snow on Wednesday, ... But scattered flurries should diminish later in the day with less than 2 centimeters falling on Chicago,
english.people.com.cn/200704/13/eng20070413_366197.html
CTV Toronto - Canadian television's online home for news about Toronto and the GTA ... A day-long snowstorm made for slippery streets, tortuous roads and some flight delays. However, the snow has now ended in the Toronto area, although Thursday morning could see a few flurries. ... Toronto could be hit by snowstorm Wednesday...
toronto.ctv.ca/servlet/an/local/CTVNews/20090128/toront... toronto.ctv.ca/servlet/an/local/CTVNews/20090128/toronto_snowstorm_090128/20090128/?hub=TorontoNewHome
Missouri: At least two people were killed and dozens of others injured in a snowstorm that hit several parts of the United States. ... At least two people killed in traffic pileups in Texas and Kansas, while up to 40 vehicles were involved in car crashes on Interstate 29 in western Missouri.
www.gulfnews.com/world/U.S.A/10176855.html
CQ TODAY ONLINE NEWS – CONGRESSIONAL AFFAIRS ; Updated March 2, 2009 – 12:52 p.m. ... House votes scheduled for Monday were canceled because of the snowstorm that hit Washington and other major East Coast cities.
www.cqpolitics.com/wmspage.cfm?docID=news-000003064001