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.
The center serves New York City, Long Island, the Hudson Valley and New Jersey.
