MISSOULA, Mont. -

With summer here and a number of nationwide disasters, the American Red Cross is in need of blood donations.

Red Cross officials tell NBC Montana O-negative and B-negative blood donations are in short supply and they need help from donors.

The American Red Cross helps supply hospitals around the country and responds to major disasters like the Boston Marathon bombings.

Julie Brehm with the American Red Cross tells us that in the event of a disaster or emergency, medical staff don't always have time to check the person’s blood type so universal blood types like O-negative and B-negative have to be used.

“Ensuring that we have a stable blood supply here is very important,” said Brehm.  “We want to make sure we can not only maintain and take care of our current hospitals but if the need is necessary to help out in other parts.”

The American Red Cross is always accepting donations.

Click here to find a Red Cross near you.