It's crunch week for the Canadian Blood Services. The holiday season is always tough for the agency; donors tend to only trickle into clinics. But the miserable weather has compounded the problem. 

"There's a large gap of appointments that need to be filled," says Michelle Thibodeau Coates, spokesperson for the Atlantic Canadian Blood Services. 

The agency has marked 2,465 appointments for New Brunswick in order to keep up blood stocks. So far, 492 of those have yet to be filled.

A mobile blood clinic planned today for Sackville had to be cancelled due to bad weather. But Coates says the two permanent clinics in Moncton and Saint John are open for the season.

She's urging anyone who lives in an area with decent weather to get out and give blood.