NEW YORK - AUGUST 21: Jemmy Delva donates blood at the New York Blood Center August 21, 2003 in New York City. Nationwide blood donations hit lows during the summer months and currently health organizations are at two day supply levels in many regions. Only five percent of the eligible population donates blood while 38,000 daily donations are needed in the U.S. (Photo by Mario Tama/Getty Images)
The New York Blood Center is making a donor appeal due to the snowstorm.
Dozens of blood drives have been canceled. Blood center officials expect donations to drop severely.
The blood center says hospital use of blood products remains high due to emergencies and the care of cancer patients.
Donors were asked to check the blood center Web site or call before leaving home. The number is 1-800-933-BLOOD.