2009–10 North American winter

2009–10 North American winter
2009–10 North American winter
	The first of 3 blizzards to impact the Northeast in early February 2010.
Seasonal boundaries
Meteorological winter	December 1 – February 28
Astronomical winter	December 21 – March 20
First event started	October 3, 2009
Last event concluded	April 30, 2010
Most notable event
Name	2009 North American Christmas blizzard
• Duration	December 22–28, 2009
• Lowest pressure	985 mb (29.09 inHg)
• Fatalities	18 total
• Damage	Unknown (2009 USD)
Seasonal statistics
Total storms (RSI); (Cat. 1+)	17 total
Major storms (RSI); (Cat. 3+)	6 total
Maximum snowfall accumulation	40 in (100 cm) in Lead, South Dakota; (December 22–28, 2009)
Total fatalities	79 total
Total damage	Unknown
Related articles
	Weather of 2009;

The 2009–10 North American winter saw several major blizzards affect the Northeastern United States. It refers to winter as it occurred across the North American continent from late 2009 to early 2010. While there is no well-agreed-upon date used to indicate the start of winter in the Northern Hemisphere, there are two definitions of winter which may be used. Based on the astronomical definition, winter begins at the winter solstice, which in 2009 occurred on December 21, and ends at the March equinox, which in 2010 occurred on March 20. Based on the meteorological definition, the first day of winter is December 1 and the last day February 28. Both definitions involve a period of approximately three months, with some variability.