After a summer of declining donations, the American Red Cross is asking for the public’s help to prevent a blood shortage.

When a donor makes and keeps an appointment to give blood or platelets in the weeks ahead, they can help ensure trauma patients, those undergoing cancer treatment and people with lifelong blood disorders can get the blood they count on, according to a news release from the Red Cross.

Locally, there is a blood drive planned from 2 to 7 p.m. Aug. 3 at First Baptist Church, 505 Community Drive, Seymour.

Right now, the Red Cross especially needs type O negative, type O positive and type B negative blood donors as well as platelet donors. Donors of all blood types can schedule an appointment to give by downloading the Red Cross Blood Donor App, visiting redcrossblood.org or calling 800-733-2767.

The Red Cross is teaming up with Warner Bros. for the theatrical release of “Meg 2: The Trench” to celebrate a summer of sharks and help stave off a summer blood and platelet shortage. All who come to give through Aug. 12 will be automatically entered for a chance to win a three-night New York getaway for two with a private shark dive adventure at Long Island Aquarium.

Those who come to give throughout the month of August also will receive a $10 e-gift card to a movie.