The American Red Cross has reissued an urgent call for blood and platelet donors after severe winter weather and seasonal flu has contributed to a spike in canceled donations.

More than 16,500 blood and platelet donations have gone uncollected this month and the situation is considered critical. Right now, blood and platelets are being distributed to hospitals faster than they are coming in.

You can help ensure a sufficient supply is available for patients by donating:

1/29/2018: 8 a.m. - 1 p.m., Alleghany High School, 404 Trojan Ave, Sparta

1/29/2018: 1 p.m. - 5:30 p.m., Chili's, 1934 Blowing Rock Rd. Boone

1/29/2018: 2 p.m. - 6:30 p.m., Boone UMC, 471 New Market Blvd. Boone

2/1/2018: 2:15 p.m. - 6:30 p.m., Banner Elk Presbyterian Church, 420 College Drive, Banner Elk

2/6/2018: 1:30 p.m. - 6 p.m., Holiday Inn Express Boone, 1943 Blowing Rock Rd. Boone

2/7/2018: 7 a.m. - 12:30 p.m., Watauga High School, 300 Go Pioneers Drive, Boone

2/7/2018: 10 a.m. - 2:30 p.m., Watauga County Agricultural Ctr., 252 Poplar Grove Rd., Boone

2/10/2018: 10 a.m. - 2:30 p.m., Ashe County Library, 148 Library Rd. West Jefferson

2/13/2018: 2:30 p.m. - 7 p.m., Veterans of Foreign Wars, 1193 US Highway 21 N, Sparta

2/13/2018: 11:30 a.m. - 4 p.m., St. Elizabeth's Catholic Church, 259 Pilgrims Way, Boone

Call 1-800-RedCross, visit RedCrossBlood.org or use the free Red Cross Blood Donor app to schedule an appointment.